Updated on 2025/12/25

写真a

 
TOKITA Masatoshi
 
Organization
School of Materials and Chemical Technology Professor
Title
Professor
Homepage
http://www.tokita-cap.mac.titech.ac.jp
External link

News & Topics

  • Nanodiamond-dispersed Transparent Screen Developed

    2015/01/30

    Languages： English

  • 導電性ナノファイバーネットワークを利用したフレキシブルで割れない透明導電フィルム

    2014/07/11

    Languages： Japanese

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    東京工業大学の松本英俊准教授、戸木田雅利准教授、坂尻浩一特任准教授、東啓介院生らの研究グループは、簡便かつ安価な製造法で得られるフレキシブルで割れない透明導電フィルムを開発した。透明導電フィルムは、光と電気を通すことのできるフィルム材料であり、ディスプレイや太陽電池などのデバイスで用いられている。現在、利用されている酸化インジウムスズ（ITO）はコストが高く供給量に限界があり、脆弱で曲げ耐性もないため、代替物材料が強く求められている。エレクトロスピニング法によって作製される髪の毛の100分の1～1000分の1の細さを持つ繊維「ナノファイバー」をマスクとして、金属蒸着フィルムをエッチング処理する、超薄型、軽量、フレキシブルで割れない透明導電フィルムの作製方法を初めて確立した。

  • Conductive nanofiber networks for flexible, unbreakable, and transparent electrodes

    2014/07/11

    Languages： English

  • 導電性ナノファイバーネットワークを利用したフレキシブルで割れない透明導電フィルム

    2014/07/10

    Languages： Japanese

  • ナノダイヤモンドを用いた透明スクリーンを開発　－透明な窓なのに画像情報が表示できる－

    2014/06/12

    Languages： Japanese

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    【要点】○ナノダイヤモンドの高い屈折率を利用○ナノダイヤモンドの粒径によって多様な応用展開が可能【概要】東京工業大学大学院理工学研究科の坂尻浩一特任准教授、戸木田雅利准教授らは、高い屈折率を有するナノダイヤモンドを分散させた薄膜に透明性と適度な光拡散特性を持たせることに成功した。透き通っているため背景を眺めることができると同時に、プロジェクターなどで画像を投影することができ、透明スクリーンとしての機能を持つ。しかも色むらがなく綺麗である。高層ビル、ショッピングウインドー、水族館や動物園の窓材、車のヘッドアップディスプレーなどに、必要に応じて、広告や情報を表示するための材料として応用が期待される。しかもダイヤモンドであるために表面の硬度は高く、耐引掻き特性も併せ持つ。ガラスやプラスチックなどの透明基板は身の回りにたくさんあり、波及効果は極めて大きい。

Degree

  • Ph. D. ( 1999.12   Tokyo Institute of Technology )

Research Interests

  • polymer science

Research Areas

  • Nanotechnology/Materials / Structural materials and functional materials

  • Nanotechnology/Materials / Polymer chemistry

Education

  • Tokyo Institute of Technology   Graduate School, Division of Science and Engineering

    - 1997

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  • Tokyo Institute of Technology   Science of Engineering

    - 1997

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    Country： Japan

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  • Tokyo Institute of Technology   School of Engineering   Dept. of Polymer Chemistry

    - 1994

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    Country： Japan

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  • Tokyo Institute of Technology   Faculty of Engineering   Department of Polymer Chemistry

    - 1994

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Research History

  • 東京科学大学   物質理工学院   教授

    2024.10

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  • Tokyo Institute of Technology   School of Materials and Chemical Technology   Professor

    2021 - 2024.9

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  • 東京工業大学 大学院理工学研究科 准教授

    2007 - 2021

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  • :東京工業大学 大学院理工学研究科 助手/助教

    2000 - 2007

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  • :東京農工大学 大学院生物システム応用科学研究科 助手

    1997 - 2000

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Professional Memberships

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Committee Memberships

  •   平成21年度繊維学会年次大会副実行委員長(2009年6月)  

    2009.6   

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  •   繊維分野におけるアカデミックロードマップ検討委員（2008年11月～2009年3月）  

    2008.11 - 2009.3   

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  •   高分子学会行事委員（2008年6月～2010年5月）  

    2008.6 - 2010.5   

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  •   繊維学会会員増強委員会副委員長(2007年1月～）  

    2007.1   

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  •   日本液晶学会ソフトマターフォーラム委員(2007年1月～）  

    2007.1   

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  • 繊維学会   平成20年度年次大会実行委員、企画委員、平成19年度年次大会実行委員、平成18年度年次大会実行委員、会員増強委員会副委員長、企画委員（若手交流担当）、第３３回夏季セミナー実行委員（若手企画責任者）  

    2007 - 2008   

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    Committee type：Academic society

    繊維学会

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  • 日本液晶学会   ソフトマターフォーラム委員  

    2007   

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    Committee type：Academic society

    日本液晶学会

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  •   繊維学会若手交流委員（2005年6月～2007年6月）  

    2005.6 - 2007.6   

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  •   繊維学会企画委員（2003年6月～2010年5月）  

    2003.6 - 2010.5   

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  •   繊維学会若手交流委員会長（2003年6月～2005年5月）  

    2003.6 - 2005.5   

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  •   高分子学会関東高分子若手研究会世話人（2003年4月～2008年3月）  

    2003.4 - 2008.3   

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  • 高分子学会   関東高分子若手研究会代表責任者 、関東高分子若手研究会代表責任者  

    2002   

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    Committee type：Academic society

    高分子学会

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  •   高分子学会関東高分子若手研究会世話人代表(2001年4月～2003年3月)  

    2001.4 - 2003.3   

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Papers

  • Superior Antithrombogenic Syndiotactic Poly(Substituted Methylene) with Densely Packed Methoxyethyl Ends of Highly Extended Side Chains at the Solid Film Surface

    Naruki Kurokawa, Masamichi Kiyoura, Hidetoshi Matsumoto, Masatoshi Tokita

    ACS Applied Bio Materials   2025.11

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    Publishing type：Research paper (scientific journal)  

    DOI： 10.1021/acsabm.5c01687

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  • Liquid Crystal Block Copolymers With Side‐On Mesogens: Orientation of Liquid Crystals at Microdomain Boundaries and Core–Shell Structure Formation

    Sayaka Yamagishi, Reon Shioda, Naruki Kurokawa, Masatoshi Tokita

    Macromolecular Chemistry and Physics   2025.11

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    Publishing type：Research paper (scientific journal)  

    DOI： 10.1002/macp.202500334

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  • Effect of Mesogen Length on the Thermal Diffusivity of Polymethacrylate Smectic Liquid Crystals

    Takeshi Saito, Shoki Tomizawa, Nawalage Florence Cooray, Naruki Kurokawa, Masatoshi Tokita

    The Journal of Physical Chemistry B   129 ( 19 )   2025.5

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    Publishing type：Research paper (scientific journal)  

    DOI： 10.1021/acs.jpcb.5c00722

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  • Effect of Mesogen Length on the Thermal Diffusivity of Polymethacrylate Smectic Liquid Crystals

    Takeshi Saito, Shoki Tomizawa, Nawalage Florence Cooray, Naruki Kurokawa, Masatoshi Tokita

    The Journal of Physical Chemistry B   Vol. 129 ( Issue 19 )   2025.5

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    Language：English   Publishing type：Research paper (scientific journal)  

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  • Smectic liquid crystalline poly(ester imide)s with low dielectric dissipation factors for high-frequency applications

    Hayato Maeda, Yucheng Liang, Ryohei Hosoya, Rika Marui, Erina Yoshida, Yuqian Chen, Kan Hatakeyama-Sato, Yuta Nabae, Shiori Nakagawa, Junko Morikawa, Masatoshi Tokita, Ririka Sawada, Shinji Ando, Yoshihiro Hayashi, Ryo Yoshida, Hidemine Furuya, Teruaki Hayakawa

    Polymer Journal   57 ( 6 )   2025.2

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    Publishing type：Research paper (scientific journal)   Publisher：Springer Science and Business Media LLC  

    DOI： 10.1038/s41428-025-01020-0

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    Other Link： https://www.nature.com/articles/s41428-025-01020-0

  • Birefringence inversion in liquid crystalline poly(substituted methylene)s bearing side-on mesogens

    Masamichi Kiyoura, Hiroyuki Kudo, Keiki Inoue, Fumitaka Ishiwari, Takanori Fukushima, Naruki Kurokawa, Masatoshi Tokita

    Journal of Materials Chemistry C   Vol. 13 ( Issue 9 )   2025

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1039/D4TC05034G

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  • Efficient, high-yield, ionized biopolymer-mediated fabrication of exfoliated MoSe2 nanosheets with reversible dispersion properties in water

    Kuchayita, K.K., Li, H.-S., Tokita, M., Cheng, C.-C.

    Flatchem   51   2025

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    Publishing type：Research paper (scientific journal)  

    DOI： 10.1016/j.flatc.2025.100844

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  • Precise detection of local relaxation of amorphous polymers at low temperatures via O2 diffusion probed by a dual-luminescent imide compound

    Rika Watanabe, Marina Doi, Haonan Liu, Masatoshi Tokita, Shinji Ando

    Soft Matter   2025

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    Publishing type：Research paper (scientific journal)  

    DOI： 10.1039/D5SM00394F

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  • Chain Conformation of Polymers Densely Grafted onto Plate-Shaped Particles

    Yusuke Watanabe, Yusuke Kakizawa, Shinya Kato, Sayaka Yamagishi, Naruki Kurokawa, Masatoshi Tokita

    Macromolecules   57 ( 22 )   10615 - 10622   2024.11

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    Publishing type：Research paper (scientific journal)  

    DOI： 10.1021/acs.macromol.4c01702

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  • Synthesis of Side-Chain Liquid Crystalline Polyacrylates with Bridged Stilbene Mesogens

    Gen-ichi Konishi, Yuki Sawatari, Riki Iwai, Takuya Tanaka, Yoshimichi Shimomura, Masatoshi Tokita

    Molecules   29 ( 21 )   5220 - 5220   2024.11

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    Publishing type：Research paper (scientific journal)   Publisher：MDPI AG  

    In recent years, π-conjugated liquid crystalline molecules with optoelectronic functionalities have garnered considerable attention, and integrating these molecules into side-chain liquid crystalline polymers (SCLCPs) holds potential for developing devices that are operational near room temperature. However, it is difficult to design SCLCPs with excellent processability because liquid crystalline mesogens are rigid rods, have low solubility in organic solvents, and have a high isotropization temperature. Recently, we developed near-room-temperature π-conjugated nematic liquid crystals based on “bridged stilbene”. In this work, we synthesized a polyacrylate SCLCP incorporating a bridged stilbene that exhibited a nematic phase near room temperature and could maintain liquid crystallinity for more than three months. We conducted a thorough phase structure analysis and evaluated the optical properties. The birefringence values of the resulting polymers were higher than those of the corresponding monomers because of the enhanced order parameters due to the polymer effect. In addition, the synthesized polymers inherited mesogen-derived AIE properties, with high quantum yields (Φfl = 0.14–0.35) in the solid state. It is noteworthy that the maximum fluorescence wavelength exhibited a redshift of greater than 27 nm as a consequence of film formation. Thus, several unique characteristics of the SCLCPs are unattainable with small molecular systems.

    DOI： 10.3390/molecules29215220

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  • Discovery of liquid crystalline polymers with high thermal conductivity using machine learning

    Hayato Maeda, Stephen Wu, Rika Marui, Erina Yoshida, Kan Hatakeyama-Sato, Yuta Nabae, Shiori Nakagawa, Meguya Ryu, Ryohei Ishige, Yoh Noguchi, Yoshihiro Hayashi, Masashi Ishii, Isao Kuwajima, Felix Jiang, Xuan Thang Vu, Sven Ingebrandt, Masatoshi Tokita, Junko Morikawa, Ryo Yoshida, Teruaki Hayakawa

    ChemRxiv   2024.8

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：American Chemical Society (ACS)  

    It is highly desirable to enhance the heat conduction of polymeric heat-dissipating materials for applications in power electronics, automotive components, light-emitting diodes, and telecommunication equipment. However, the thermal conductivity of polymeric materials is one to three orders of magnitude lower than that of metals and ceramics due to phonon scattering in amorphous regions. Several attempts have been made to overcome this limitation by increasing heat flow along the orientation axis of the self-assembly of liquid crystalline polymers, but the design of liquid crystalline polymers remains largely empirical. In this study, we developed a machine learning model that can predict with over 96% accuracy whether a polymer will form a liquid crystalline state based on its compositional or structural characteristics. By exploring the inverse mapping of this model, we identified a comprehensive set of chemical structures for liquid crystalline polyimides. De novo monomer synthesis and polymerization reactions of six selected polymers were performed, and all synthesized polymers were experimentally confirmed to form liquid crystalline structures with thermal conductivities ranging from 0.722 to 1.26 W m−1 K−1. These are the first liquid crystalline polymers predicted and discovered via machine learning.

    DOI： 10.26434/chemrxiv-2024-tj786

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  • Monodomain Liquid Crystal Elastomers Composed of Main‐Chain Type Nematic Polyester Bonded to Rubbery Segments at Both Ends

    Ryoji Suzuki, Yuki Ikeda, Suzune Ito, Mikihiro Hayashi, Naruki Kurokawa, Masatoshi Tokita

    Macromolecular Chemistry and Physics   2024.8

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    Publishing type：Research paper (scientific journal)   Publisher：Wiley  

    Abstract

    Monodomain liquid crystal elastomers (LCEs) are prepared using liquid crystal block copolymers (LCBCPs) comprised of a nematic liquid crystal (NLC) main‐chain polyester linked to cross‐linkable polymethacrylate (PMA) at both ends. LCBCPs at a PMA weight fraction of ≈30% are doped with a tetra‐thiol compound, stretched in one direction, and then illuminated by UV light, yielding LCBCPs that formed microlamellae consisting of alternate stacking crosslinked PMA blocks and NLC polyester blocks. The LC director lay along the stretching direction (SD). Raising the temperature to the NLC isotropization temperature, the crosslinked LCBCP strips fixed at one end contracted reversibly by a factor of 1.2–1.4 along the SD, deforming the microlamellae. The strips fixed at both ends increased the tensile stress to ≈200 kPa while maintaining the microlamellae undeformed. Regardless of strip fixation at one or both ends, the NLC decreased the orientational order. The contraction amounts and the tensile stress of strips are well associated with decreased NLC orientational order.

    DOI： 10.1002/macp.202400214

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  • Push-pull biphenyl and tolane derivatives as novel luminescent liquid crystals: synthesis and properties

    Yuuto Iida, Yoshimichi Shimomura, Masatoshi Tokita, Gen-Ichi Konishi

    Liquid Crystals   1 - 14   2024.7

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    Publishing type：Research paper (scientific journal)   Publisher：Informa UK Limited  

    DOI： 10.1080/02678292.2024.2381547

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  • Correlation Between Side‐Chain Arrangement and Main‐Chain Helix Conformation in Liquid Crystalline Syndiotactic Poly(Substituted Methylene)s Bearing Cyanobiphenyl Mesogens

    Masamichi Kiyoura, Noboru Koshimizu, Kazuhiro Shikinaka, Kiyotaka Shigehara, Masatoshi Tokita

    Macromolecular Chemistry and Physics   2024.7

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    Publishing type：Research paper (scientific journal)   Publisher：Wiley  

    Abstract

    This study focuses on the helical conformation of the main chain of syndiotactic poly(substituted methylene)s with 4‐cyanobiphenyl (CB) moieties incorporated at the ends of the alkyloxycarbonyl side chains. The polymers are designated as PCBn, where n is the number of methylene units in the spacer between the main chain and CB. PCB6 and PCB8 assemble the side chains into layers without positional order within the layers. Meanwhile, PCB10 and PCB12 assemble the side chains into layers with a short‐range positional order. Each CB moiety at a side chain end is bonded to a carbon atom, which is arranged along the helical main chain contour, and its position correlates with that of the carbon atom. As the temperature increases, PCB10 undergoes a phase transition, losing the positional order of the side chains within a layer, which alters the main chain conformation. Consequently, the positions of the side‐chain CB moieties affect the helical conformation of the main chain. In contrast, PCB12 maintains the main chain conformation when undergoing a phase transition similar to that of PCB10. PCB12 with the longer spacer allows the main chain to adopt a helix conformation, which is independent of the positions of side‐chain CB moieties.

    DOI： 10.1002/macp.202400204

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  • 液晶性ポリ置換メチレンの側鎖末端に結合したカルバゾールの凝集形態

    清浦正道, 黒川成貴, 戸木田雅利

    ポリイミド・芳香族系高分子ー最近の進歩2024   Vol. 31   2024.6

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  • Supramolecular liquid crystals from the dimer of L‐shaped molecules with tertiary amide end groups

    Yuki Sawatari, Yoshimichi Shimomura, Masato Takeuchi, Riki Iwai, Takuya Tanaka, Eiji Tsurumaki, Masatoshi Tokita, Junji Watanabe, Gen‐ichi Konishi

    Aggregate   2024.1

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    Publishing type：Research paper (scientific journal)   Publisher：Wiley  

    Abstract

    Supramolecular liquid crystals (SLCs) are attractive materials for fabricating devices with new optoelectronic functions. Conventional SLCs are made from hydrogen‐bonded mesogens. However, these mesogens suffer from high melting points, and the types of formable aggregates are limited owing to the directionality of the hydrogen bonding. Therefore, to fabricate non‐hydrogen‐bonded SLCs, we hypothesized that the introduction of tertiary amide groups into calamitic molecules would be advantageous because they have an L‐shaped structure with N‐ or C‐alkyl side chains not aligned along the long axis and the flexibility to undergo cis–trans isomerization. In this study, we developed a novel non‐hydrogen‐bonded SLC by assembling an L‐shaped dimer composed of calamitic molecules (phenyltolanes) with tertiary amides at their ends. These molecules exhibited a smectic B phase. The phase transition temperature of the SLCs from crystal to liquid crystal phase was low despite the long π‐conjugated core. Wide‐angle X‐ray diffraction and variable‐temperature Fourier‐transform infrared measurements revealed dimer formation by weak intermolecular interactions, that is, the molecular recognition of L‐shaped molecules, and mobility of the alkyl groups attached to amide driven by cis–trans isomerization in the liquid crystal phase. Thus, cis–trans isomerization of tertiary amides contributed enormously to the formation and lower clearing points of this SLC. The developed method can be used not only to develop non‐hydrogen‐bonded SLCs but also to develop novel soft matter with controlled properties by incorporating the SLCs, as the aggregates can be controlled to impart desired functionalities.

    DOI： 10.1002/agt2.507

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  • Near-room-temperature π-conjugated nematic liquid crystals in molecules with a flexible seven-membered ring structure

    Riki Iwai, Hiroyuki Yoshida, Yuki Arakawa, Shunsuke Sasaki, Yuuto Iida, Kazunobu Igawa, Tsuneaki Sakurai, Satoshi Suzuki, Masatoshi Tokita, Junji Watanabe, Gen ichi Konishi

    Aggregate   6 ( 1 )   2024

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    Publishing type：Research paper (scientific journal)  

    DOI： 10.1002/agt2.660

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  • Synthesis of ABC/ACB-Type Triblock Copolymers Composed of Polystyrene and Polymethacrylate via Living Anionic Polymerization and Analyzing the Effect of Casting Solvents on Higher-Order Structures

    Uehara, R., Maekawa, S., Seshimo, T., Dazai, T., Sato, K., Hatakeyama, K., Nabae, Y., Tokita, M., Hayakawa, T.

    Journal of Photopolymer Science and Technology   37 ( 2 )   2024

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    Publishing type：Research paper (scientific journal)  

    DOI： 10.2494/photopolymer.37.151

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  • Syndiotactic Poly(Substituted Methylene)s with Alkyloxycarbonyl Side Chains: Effects of Side Chain Chirality on the Main Chain Helix and Crystallinity

    Masamichi Kiyoura, Yosuke Aizawa, Mihoko Nishimura, Naruki Kurokawa, Masatoshi Tokita

    Macromolecular Chemistry and Physics   2023.11

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    Publishing type：Research paper (scientific journal)   Publisher：Wiley  

    Abstract

    Syndiotactic poly(substituted methylene)s (st‐PMs) with alkyloxycarbonyl side chains form hexagonal columnar liquid crystals (Colh LCs), wherein the main chain adopting either right‐ or left‐handed helices is arranged in a 2D hexagonal lattice. This study investigates the main chain conformation for st‐PMs with chiral side chains, designated as st‐P8(3,7Me)‐fSS. st‐P8(3,7Me)‐fSS polymers possess 3,7‐dimethyloctyloxycarbonyl side chains at different S‐enantiomeric fractions, fS. In chiral st‐P8(3,7Me)‐fSS with an fS > 50%, the main chain adopts a one‐handed helical conformation along the longer contour with increasing fS. The fS influences the crystallinity of the polymers. Chiral P8(3,7Me)‐fSS polymers crystallize the Colh LCs upon cooling. The crystallite size, melting temperature, and fusion enthalpy increase with fS. Racemic st‐P8(3,7Me)‐50S does not crystallize.

    DOI： 10.1002/macp.202300353

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  • Fluorinated Poly(pentylene 4,4′-bibenzoate)s with Low Isotropization Temperatures and Unique Phase Transition Behavior

    Yoshimichi Shimomura, Masatoshi Tokita, Atsuya Kawamura, Junji Watanabe, Gen-ichi Konishi

    Macromolecules   56 ( 13 )   5152 - 5161   2023.6

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    Publishing type：Research paper (scientific journal)   Publisher：American Chemical Society (ACS)  

    DOI： 10.1021/acs.macromol.3c00773

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  • Overcoming the entropy of polymer chains by making a plane with terminal groups: a thermoplastic PDMS with a long-range 1D structural order. International journal

    Yugen Chen, Fumitaka Ishiwari, Tomoya Fukui, Takashi Kajitani, Haonan Liu, Xiaobin Liang, Ken Nakajima, Masatoshi Tokita, Takanori Fukushima

    Chemical science   14 ( 9 )   2431 - 2440   2023.3

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    Language：English   Publishing type：Research paper (scientific journal)  

    Due to its unique physical and chemical properties, polydimethylsiloxane (PDMS) is widely used in many applications, in which covalent cross-linking is commonly used to cure the fluidic polymer. The formation of a non-covalent network achieved through the incorporation of terminal groups that exhibit strong intermolecular interactions has also been reported to improve the mechanical properties of PDMS. Through the design of a terminal group capable of two-dimensional (2D) assembly, rather than the generally used multiple hydrogen bonding motifs, we have recently demonstrated an approach for inducing long-range structural ordering of PDMS, resulting in a dramatic change in the polymer from a fluid to a viscous solid. Here we present an even more surprising terminal-group effect: simply replacing a hydrogen with a methoxy group leads to extraordinary enhancement of the mechanical properties, giving rise to a thermoplastic PDMS material without covalent cross-linking. This finding would update the general notion that less polar and smaller terminal groups barely affect polymer properties. Based on a detailed study of the thermal, structural, morphological and rheological properties of the terminal-functionalized PDMS, we revealed that 2D assembly of the terminal groups results in networks of PDMS chains, which are arranged as domains with long-range one-dimensional (1D) periodic order, thereby increasing the storage modulus of the PDMS to exceed its loss modulus. Upon heating, the 1D periodic order is lost at around 120 °C, while the 2D assembly is maintained up to ∼160 °C. The 2D and 1D structures are recovered in sequence upon cooling. Due to the thermally reversible, stepwise structural disruption/formation as well as the lack of covalent cross-linking, the terminal-functionalized PDMS shows thermoplastic behavior and self-healing properties. The terminal group presented herein, which can form a 'plane', might also drive other polymers to assemble into a periodically ordered network structure, thereby allowing for significant modulation of their mechanical properties.

    DOI： 10.1039/d2sc05491d

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  • Effects of Smectic Layer Deformation on Mechanical Properties of Glassy Liquid Crystal Polymer Fibers

    Kawahara, K., Suzuki, R., Tokita, M.

    Macromolecular Chemistry and Physics   224 ( 12 )   2023

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    Publishing type：Research paper (scientific journal)  

    DOI： 10.1002/macp.202300032

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  • Ion Conductivity of Liquid Crystalline Poly(substituted methylene)s Bearing Ionic LiquidMoieties at the Side Chain Ends

    Kiyoura, M., Yoshitake, A., Soku, H., Tokita, M.

    Chemistry Letters   52 ( 6 )   2023

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    Publishing type：Research paper (scientific journal)  

    DOI： 10.1246/cl.230129

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  • 4-18 液晶構造

    戸木田雅利

    高分子材料の辞典   2022.10

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    Language：Japanese   Publisher：高分子学会（編集） 朝倉書店  

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  • 6-17 液晶性高分子

    戸木田雅利

    高分子材料の辞典   2022.10

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    Language：Japanese   Publisher：高分子学会（編集） 朝倉書店  

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  • Alkylthio-based asymmetric liquid crystals: unravelling the substituent effects and intercalated cybotactic nematic and smectic phases

    Yuki Arakawa, Yuko Ishida, Yukito Sasaki, Shunsuke Sasaki, Masatoshi Tokita, Hideto Tsuji

    Materials Advances   3 ( 7 )   3218 - 3228   2022.3

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    Publishing type：Research paper (scientific journal)  

    DOI： 10.1039/d2ma00050d

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  • Effect of Smectic Layers on Thermal Diffusivity of Side-Chain Polymer Liquid Crystals

    Harada, H., Saito, T., Tokita, M.

    Macromolecules   55 ( 4 )   2022

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    DOI： 10.1021/acs.macromol.1c02222

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  • Mechanochromic cyclodextrins

    Sugita, Y., Aoki, D., Tokita, M., Otsuka, H.

    Chemical Communications   58 ( 18 )   2022

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    DOI： 10.1039/d2cc00363e

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  • Thermal Conductivity Enhancement of Liquid Crystal Polymer-Solid Particle Composites by Grafting a Main-Chain-Type Liquid Crystal Polymer onto Particle Surfaces

    Ishikawa, S., Kawahara, K., Tomizawa, S., Watanabe, Y., Tokita, M.

    ACS Applied Polymer Materials   4 ( 10 )   2022

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    DOI： 10.1021/acsapm.2c00845

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  • Stress Response and Deformation of Block Copolymer Lamellae on Stretching in Normal Direction: Effects of Lateral Size of Lamellae

    Yagi, S., Oguro, M., Tokita, M.

    Macromolecular Chemistry and Physics   223 ( 5 )   2022

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    DOI： 10.1002/macp.202100399

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  • Persistent Water Repellency of Syndiotactic Polymethylene with Perfluoroethyl Hexyloxycarbonyl Side Chains Reviewed

    Yoshitake, A., Kudo, H., Matsumoto, H., Tokita, M.

    Macromolecular Rapid Communications   42 ( 17 )   2100311 - 2100311   2021.9

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    Language：English   Publishing type：Research paper (scientific journal)   Publisher：Wiley  

    DOI： 10.1002/marc.202100311

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  • Microstructure Investigation of Polymer Electrolyte Fuel Cell Catalyst Layers Containing Perfluorosulfonated Ionomer

    Maito Koga, Hidetoshi Matsumoto, Mitsunori Kunishima, Masatoshi Tokita, Hiroyasu Masunaga, Noboru Ohta, Akihisa Takeuchi, Junji Mizukado, Hidekazu Sugimori, Kazuhiko Shinohara, Suguru Uemura, Toshihiko Yoshida, Shuichiro Hirai

    Membranes   11 ( 7 )   466 - 466   2021.6

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    Perfluorosulfonated ionomers are the most successful ion-exchange membranes at an industrial scale. One recent, cutting-edge application of perfluorosulfonated ionomers is in polymer electrolyte fuel cells (PEFCs). In PEFCs, the ionomers are used as a component of the catalyst layer (CL) in addition to functioning as a proton-exchange membrane. In this study, the microstructures in the CLs of PEFCs were characterized by combined synchrotron X-ray scattering and transmission electron microscopy (TEM) analyses. The CL comprised a catalyst, a support, and an ionomer. Fractal dimensional analysis of the combined ultrasmall- and small-angle X-ray scattering profiles indicated that the carbon-black-supported Pt catalyst (Pt/CB) surface was covered with the ionomer in the CL. Anomalous X-ray scattering revealed that the Pt catalyst nanoparticles on the carbon surfaces were aggregated in the CLs. These findings are consistent with the ionomer/catalyst microstructures and ionomer coverage on the Pt/CB surface obtained from TEM observations.

    DOI： 10.3390/membranes11070466

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  • Low-temperature graphitization of poly(acrylonitrile) densely grafted onto a silica core surface Reviewed

    Yamazaki, S., Yoshida, K., Matsumoto, H., Tokita, M.

    Polymer   225   123768 - 123768   2021.5

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    DOI： 10.1016/j.polymer.2021.123768

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  • Report of the Autumn Meeting 2020 Online

    Sen'i Gakkaishi   77 ( 2 )   P-89 - P-91   2021.2

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    DOI： 10.2115/fiber.77.p-89

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    Other Link： http://id.ndl.go.jp/bib/031273258

  • Changing the structural and physical properties of 3-arm star poly(δ-valerolactone)s by a branch-point design

    Hibiki Ogiwara, Fumitaka Ishiwari, Tadahiro Kimura, Yukihiro Yamashita, Takashi Kajitani, Atsuki Sugimoto, Masatoshi Tokita, Masaki Takata, Takanori Fukushima

    Chemical Communications   57 ( 32 )   3901 - 3904   2021

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    <p>This study provides an answer to the question of whether polymer properties can be modulated by the design of branching points.</p>

    DOI： 10.1039/d1cc01092a

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  • Birefringence and photoluminescence properties of diphenylacetylene-based liquid crystal dimers

    Yuki Arakawa, Shunsuke Sasaki, Kazunobu Igawa, Masatoshi Tokita, Gen Ichi Konishi, Hideto Tsuji

    New Journal of Chemistry   44 ( 40 )   17531 - 17541   2020.10

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    DOI： 10.1039/d0nj04426a

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  • Nonspherical Uniaxial Azobenzene Polymer Particles and Their Shape Changes under UV- or White-Light Irradiation for Stimuli-Response Applications Reviewed

    Tomomichi Itoh, Tetsuo Tamamitsu, Tatsuro Aki, Kento Tsutsui, Yuki Mori, Hiroyuki Kudo, Masatoshi Tokita, Hiroaki Shimomoto, Eiji Ihara

    ACS Applied Polymer Materials   2020.6

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    DOI： 10.1021/acsapm.0c00475

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  • Deformation of Hierarchical Lamellar Structure Formed by a Liquid Crystalline Block Copolymer

    Junpei Kuribayashi, Ryohei Ishige, Mikihiro Hayashi, Masatoshi Tokita

    MACROMOLECULAR CHEMISTRY AND PHYSICS   221 ( 9 )   2020.5

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    DOI： 10.1002/macp.202000042

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  • Accelerated aging-induced variation of polypropylene (PP) structure studied by two-dimensional (2D) small-angle X-ray scattering (SAXS) correlation spectroscopy

    Maito Koga, Ryota Watanabe, Hideaki Hagihara, Junji Mizukado, Masatoshi Tokita, Hideyuki Shinzawa

    JOURNAL OF MOLECULAR STRUCTURE   1207   2020.5

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    DOI： 10.1016/j.molstruc.2020.127764

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  • Two-dimensional (2D) small-angle X-ray scattering (SAXS) correlation spectroscopy for block copolymer consisting of microlamellar and liquid crystal (LC) structures

    Maito Koga, Masatoshi Tokita, Junji Mizukado, Hideyuki Shinzawa

    JOURNAL OF MOLECULAR STRUCTURE   1207   2020.5

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    DOI： 10.1016/j.molstruc.2020.127767

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  • Influence of uniaxial orientation of fluorinated polymer/phosphonate-modified needle-like nanofiller composite by drawing

    Hirayama, S., Hayasaki, T., Almarasy, A.A., Yabu, H., Tokita, M., Fujimori, A.

    Polymer Composites   41 ( 8 )   2020.4

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    DOI： 10.1002/pc.25598

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  • Long-range lamellar formation in blends of divided-lamellar-forming liquid crystal block copolymers with liquid crystal homopolymers

    Hayashi, M., Kuribayashi, J., Tokita, M.

    Polymer   211   2020

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    DOI： 10.1016/j.polymer.2020.123086

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  • Azimuthal anchoring coefficients of nematic liquid crystals on polystyrene brushes formed at the air surface of block copolymer monolayers Reviewed

    Iwata, N., Yoshioka, Y., Yazawa, K., Tokita, M.

    Liquid Crystals   47 ( 7 )   accepted   2020

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    Language：English   Publishing type：Research paper (scientific journal)  

    DOI： 10.1080/02678292.2019.1706110

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  • Synthesis of fluorescent polycarbonates with highly twisted N,N-bis(dialkylamino)anthracene AIE luminogens in the main chain Reviewed

    Amir Sharidan Sairi, Kohei Kuwahara, Shunsuke Sasaki, Satoshi Suzuki, Kazunobu Igawa, Masatoshi Tokita, Shinji Ando, Keiji Morokuma, Tomoyoshi Suenobu, Gen-ichi Konishi

    RSC ADVANCES   9 ( 38 )   21733 - 21740   2019.7

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    DOI： 10.1039/c9ra03701b

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  • Transition of liquid crystal anchoring at the microdomain interface observed for main-chain nematic polyester segments of block copolymers

    Maito Koga, Takumi Wakabayashi, Sungmin Kang, Masatoshi Tokita

    POLYMER JOURNAL   51 ( 2 )   295 - 302   2019.2

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    DOI： 10.1038/s41428-018-0131-x

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  • Lamellar structures in blends of amorphous–block–main-chain liquid crystal–block–amorphous copolymers and amorphous homopolymers: Effects of the amorphous homopolymer molecular weight

    Hayashi, M., Kuribayashi, J., Tokita, M.

    Polymer   178   2019

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    DOI： 10.1016/j.polymer.2019.121555

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  • A Correlation between Thermal Diffusivity and Long Period in Thermotropic Liquid Crystalline Polyesters

    Yamazaki, S., Tokita, M.

    Macromolecules   52 ( 24 )   2019

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    DOI： 10.1021/acs.macromol.9b01926

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  • Novel in-plane switching liquid crystal display with an extremely high transmittance using a well-designed bottlebrush as a zero-azimuth anchoring material

    Osamu Sato, Harumi Okuno, Isao Adachi, Junji Watanabe, Masatoshi Tokita, Keita Sakakibara, Yuji Kinose, Atsushi Goto, Yoshinobu Tsujii

    Japanese Journal of Applied Physics   58 ( 6 )   2019

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    DOI： 10.7567/1347-4065/ab1e70

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  • Polar anchoring strengths of nematic liquid crystal on high-density polymer brush surfaces Reviewed

    Iwata, N., Yazawa, K., Tokita, M.

    Liquid Crystals   46 ( 12 )   1881 - 1888   2019

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    DOI： 10.1080/02678292.2019.1613692

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  • Uniaxial alignment of nematic liquid crystals filling vacant spaces in surface-treated nanofibre nonwoven Reviewed

    Azuma, K., Iwata, N., Takano, Y., Matsumoto, H., Tokita, M.

    Liquid Crystals   46 ( 8 )   1241 - 1245   2019

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    DOI： 10.1080/02678292.2018.1549281

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  • Terminal Functionalization with a Triptycene Motif That Dramatically Changes the Structural and Physical Properties of an Amorphous Polymer Reviewed

    Fumitaka Ishiwari, Gen Okabe, Hibiki Ogiwara, Takashi Kajitani†‡, Masatoshi Tokita, Masaki Takata, Takanori Fukushima

    Journal of the American Chemical Society   140 ( 41 )   13497 - 13502   2018.10

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    DOI： 10.1021/jacs.8b09242

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  • Investigation of Drying Process of Catalyst Ink for Polymer Electrolyte Fuel Cells by Grazing-Incidence X-Ray Scattering Reviewed

    Maito Koga, Hidetoshi Matsumoto, Masatoshi Tokita, Hiroyasu Masunaga, Takaaki Hikima, Hidekazu Sugimori, Takashi Sasabe, Toshihiko Yoshida, Kazuhiko Shinohara, Shuichiro Hirai

    ECS Transactions   2018.7

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    DOI： 10.1149/08613.0157ecst

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  • Twist bend nematic liquid crystals prepared by one-step condensation of 4-(4-Pentylcyclohexyl) benzoic acid and alkyl diol Reviewed

    Kazuki Watanabe, Tasuku Tamura, Sungmin Kang, Masatoshi Tokita

    Liquid Crystals   45 ( 6 )   924 - 930   2018.5

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    DOI： 10.1080/02678292.2018.1435830

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  • Trial Manufacture of Nanofibers Made from a Main-Chain Liquid-Crystalline Elastomer Composed of Bibenzoate Mesogens Reviewed

    Kazuyuki Hiraoka, Yukari Saito, Yoshihisa Kato, Tomoya Imamura, Hidetoshi Matsumoto, Masatoshi Tokita, Keisuke Azuma

    JOURNAL OF FIBER SCIENCE AND TECHNOLOGY   74 ( 4 )   89 - 94   2018.4

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    DOI： 10.2115/fiberst.2018-0014

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  • Microphase-Separated Morphology and Liquid Crystal Orientation in Block Copolymers Comprising a Main-Chain Liquid Crystalline Central Segment Connected to Side-Chain Liquid Crystalline Segments at Both Ends Reviewed

    Koga Maito, Sato Kazunori, Kang Sungmin, Tokita Masatoshi

    MACROMOLECULAR CHEMISTRY AND PHYSICS   219 ( 3 )   2018.2

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    DOI： 10.1002/macp.201700332

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  • Self-Assembly of Hierarchical Structures Using Cyclotriphosphazene-Containing Poly(substituted methylene) Block Copolymers Reviewed

    Kato, F., Chandra, A., Tokita, M., Asano, H., Shimomoto, H., Ihara, E., Hayakawa, T.

    ACS Macro Letters   7 ( 1 )   37 - 41   2018.1

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    DOI： 10.1021/acsmacrolett.7b00789

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  • Effects of polymer characteristics and liquid crystallinity on structures and properties of liquid crystal polymers

    Tokita, M.

    Journal of Fiber Science and Technology   74 ( 1 )   2018

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    DOI： 10.2115/fiber.74.P-20

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  • New fabrication approach to develop a high birefringence photo-crosslinked film based on a sulfur-containing liquid crystalline molecule with large temperature dependence of birefringence

    Yuki Arakawa, Hiroki Kuwahara, Masatoshi Tokita, Gen-ichi Konishi, Hideto Tsuji

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   662 ( 1 )   197 - 207   2018

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    DOI： 10.1080/15421406.2018.1467619

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  • Time-resolved nanostructural analysis of catalyst layer formation process by synchrotron X-ray scattering

    Y. Konosu, M. Koga, H. Matsumoto, M. Tokita, H. Masunaga, T. Hikima, H. Sugimori, T. Yoshida, K. Shinohara, S. Hirai

    ECS Trans.   Vol. 80 ( No. 8 )   2017.9

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    DOI： 10.1149/08008.0269ecst

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  • Zero percolation threshold in electric conductivity of aluminum nanowire network fabricated by chemical etching using an electrospun nanofiber mask Reviewed

    Keisuke Azuma, Koichi Sakajiri, Takashi Okabe, Hidetoshi Matsumoto, Sungmin Kang, Junji Watanabe, Masatoshi Tokita

    JAPANESE JOURNAL OF APPLIED PHYSICS   56 ( 9 )   2017.9

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    DOI： 10.7567/JJAP.56.095002

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  • Electro-optic Characteristics of OZ-IPS LCD Utilizing an Application-Type, Zero-Azimuth Anchoring Material Tsuyoshi Reviewed

    Tsuyoshi Maeda, Joji Kawamura, Isao Adachi, Harumi Okuno, Osamu Sato, Naoto Iwata, Junji Watanabe, Masatoshi Tokita, Keita Sakakibara, Atsushi Goto, Yoshinobu Tsujii

    SID Symposium Digest of Technical Papers   Vol. 48 ( Issue 1 )   704 - 707   2017.6

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    DOI： 10.1002/sdtp.11737

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  • Smart Network Polymers with Bis(piperidyl)naphthalene Cross-Linkers: Selective Fluorescence Quenching and Photodegradation in the Presence of Trichloromethyl-Containing Chloroalkanes Reviewed

    Shunsuke Sasaki, Yoshiyuki Sugita, Masatoshi Tokita, Tomoyoshi Suenobu, Osamu Ishitani, Gen-ichi Konishi

    MACROMOLECULES   50 ( 9 )   3544 - 3556   2017.5

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    DOI： 10.1021/acs.macromol.7b00213

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  • An in-plane switching liquid crystal cell with weakly anchored liquid crystals on the electrode substrate Reviewed

    O. Sato, N. Iwata, J. Kawamura, T. Maeda, Y. Tsujii, J. Watanabe, M. Tokita

    JOURNAL OF MATERIALS CHEMISTRY C   5 ( 18 )   4384 - 4387   2017.5

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    DOI： 10.1039/c6tc05465j

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  • Long period structures in polymer liquid crystals investigated using synchrotron radiation X-ray scattering

    Tokita, M.

    Kobunshi   66 ( 8 )   2017

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  • Polar anchoring strengths of nematic liquid crystal on high-density polymer brush surfaces. Reviewed

    Yazawa Kenta, Iwata Naoto, Sato Osamu, Tokita Masatoshi

    Proceedings of Japanese Liquid Crystal Society Annual meeting   2017 ( 0 )   PB02   2017

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    <p></p>

    DOI： 10.11538/ekitou.2017.0_PB02

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  • Halogen Substitution Effects on the Molecular Packing and Thin Film Transistor Performances of Carbazoledioxazine Derivatives Reviewed

    Tatsumi Hiroki, Wang Yang, Aizawa Yosuke, Tokita Masatoshi, Mori Takehiko, Michinobu Tsuyoshi

    Journal of Physical Chemistry C   120 ( 47 )   26686 - 26694   2016.12

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    DOI： 10.1021/acs.jpcc.6b09888

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  • Thermal diffusivity of side-chain-polymer smectic liquid crystals Reviewed

    Atsuki Sugimoto, Yuzuka Yoshioka, Sungmin Kang, Masatoshi Tokita

    POLYMER   106   35 - 42   2016.12

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    DOI： 10.1016/j.polymer.2016.10.051

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  • Dimerization of Nematic Liquid Crystals for Enhancing Birefringence Reviewed

    Hiroki Kuwahara, Koichi Sakajiri, Sungmin Kang, Junji Watanabe, Masatoshi Tokita

    CHEMISTRY LETTERS   45 ( 11 )   1297 - 1299   2016.11

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    DOI： 10.1246/cl.160714

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  • Two-Dimensional Skyrmion Lattice Formation in a Nematic Liquid Crystal Consisting of Highly Bent Banana Molecules Reviewed

    Sungmin Kang, Eun-Woo Lee, Tianqi Li, Xiaobin Liang, Masatoshi Tokita, Ken Nakajima, Junji Watanabe

    ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   55 ( 38 )   11552 - 11556   2016.9

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    DOI： 10.1002/anie.201606388

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  • Fully Liquid-Crystalline ABA Triblock Copolymer of Fluorinated Side-Chain Liquid-Crystalline A Block and Main-Chain Liquid-Crystalline B Block: Higher Order Structure in Bulk and Thin Film States Reviewed

    Ishige, R., Ohta, N., Ogawa, H., Tokita, M., Takahara, A.

    Macromolecules   49 ( 16 )   6061 - 6074   2016.8

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    DOI： 10.1021/acs.macromol.6b00855

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  • Recent Studies on Liquid Crystalline Polyesters : Applications to High Thermal Conductive Polymers and Liquid Crystalline Elastomers Reviewed

    Masatoshi Tokita

    SEN-I GAKKAISHI   72 ( 7 )   343 - 344   2016.7

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  • Extended Chain Lamella Formation Characteristics of Main-Chain Smectic Liquid Crystalline Copolyesters Comprising Different Length Units Reviewed

    Masatoshi Tokita, Astuki Sugimoto, Chiharu Takahashi, Shusuke Yoshihara, Renee van de Watering, Sungmin Kang

    MACROMOLECULES   49 ( 7 )   2718 - 2723   2016.4

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    DOI： 10.1021/acs.macromol.6b00100

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  • Internal Structure of Hydroxypropyl Cellulose Nanofibers Prepared by Electrospinning from Different Phases of Aqueous Solutions Reviewed

    Tetsuya Danno, Emi Hasegawa, Yuichi Konosu, Mie Minagawa, Masatoshi Tokita, Hidetoshi Matsumoto, Akihiko Tanioka

    KOBUNSHI RONBUNSHU   73 ( 4 )   354 - 360   2016

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    DOI： 10.1295/koron.2016-0009

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  • Time-resolved nanostructural analysis of thin-film formation process from nafion solution by synchrotron x-ray scattering Reviewed

    Y. Konosu, H. Masunaga, T. Hikima, M. Tokita, H. Matsumoto, T. Sasabe, T. Yoshida, K. Shinohara, S. Hirai

    ECS Transactions   75 ( 14 )   637 - 642   2016

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    DOI： 10.1149/07514.0637ecst

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  • Transparent and high permittivity films of poly(methyl methacrylate)-grafted 7 nm barium titanate particles prepared by surface-initiated atom transfer radical polymerization Reviewed

    Iwata, N., Sato, O., Ohno, K., Sakajiri, K., Kang, S., Tokita, M.

    Polymer   81   23 - 28   2015.12

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    DOI： 10.1016/j.polymer.2015.11.010

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  • Thermally Reversible Distortion Observed for Triblock Copolymers Comprising Main-Chain Liquid Crystal Polyesters Attached to Photo-Cross-Linked Cinnamate Segments at Both Ends Reviewed

    Abe, K., Koga, M., Wakabayashi, T., Kang, S., Sakajiri, K., Watanabe, J., Tokita, M.

    Macromolecules   48 ( 22 )   8354 - 8360   2015.11

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    DOI： 10.1021/acs.macromol.5b01646

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  • Thermotropic Behavior of Syndiotactic Polymethylenes with ω-[4-(trans-4-Pentylcyclohexyl)phenoxy]alkyloxycarbonyl Side Chains Reviewed

    Koshimizu, N., Aizawa, Y., Sakajiri, K., Shikinaka, K., Shigehara, K., Kang, S., Tokita, M.

    Macromolecules   48 ( 11 )   3653 - 3661   2015.6

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    DOI： 10.1021/acs.macromol.5b00743

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  • ナノ粒子に高密度にグラフトしたポリメチルメタクリレートのガラス転移

    岩田直人, 佐藤未紗, 姜聲敏, 渡辺順次, 戸木田雅利, 佐藤治, 大野工司

    2015.5

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  • Phase separation and self-assembly of cyclic amphiphilic block copolymers with a main-chain liquid crystalline segment Reviewed

    Honda, S., Koga, M., Tokita, M., Yamamoto, T., Tezuka, Y.

    Polymer Chemistry   6 ( 22 )   4167 - 4176   2015.4

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    DOI： 10.1039/c5py00346f

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  • Odd-even effect on viscoelastic properties of twin-dimer nematic liquid crystals Reviewed

    Tomoya Yoshida, Atsuki Sugimoto, Aya Ikoma, Tatsuro Matsuoka, Sungmin Kang, Koichi Sakajiri, Junji Watanabe, Masatoshi Tokita

    LIQUID CRYSTALS   42 ( 4 )   463 - 472   2015.4

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    DOI： 10.1080/02678292.2014.996794

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  • Highly birefringent polymer films from the photo-crosslinking polymerisation of bistolane-based methacrylate monomers Reviewed

    Arakawa, Y., Kuwahara, H., Sakajiri, K., Kang, S., Tokita, M., Konishi, G.-I.

    Liquid Crystals   42 ( 10 )   1419 - 1427   2015.1

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    DOI： 10.1080/02678292.2015.1053542

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  • Cholesteric films exhibiting expanded or split reflection bands prepared by atmospheric photopolymerisation of diacrylic nematic monomer doped with a photoresponsive chiral dopant

    Harada, Y., Sakajiri, K., Kuwahara, H., Kang, S., Watanabe, J., Tokita, M.

    Journal of Materials Chemistry C   3 ( 15 )   2015

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    DOI： 10.1039/c4tc02977a

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  • Benzobisthiadiazole-based conjugated dono-racceptor polymers for organic thin film transistors: effects of pi-conjugated bridges on ambipolar transport Reviewed

    Wang Yang, Kadoya Tomofumi, Wang Lei, Hayakawa Teruaki, Tokita Masatoshi, Mori Takehiko, Michinobu Tsuyoshi

    Journal of Materials Chemistry C   3 ( 6 )   1196 - 1207   2015

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    DOI： 10.1039/C4TC02273D

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  • Smectic A-hexagonal columnar-B7 phase transition of acute-angle bent-core molecules Reviewed

    Lee, E.-W., Hattori, M., Uehara, F., Tokita, M., Kawauchi, S., Watanabe, J., Kang, S.

    Journal of Materials Chemistry C   3 ( 10 )   2266 - 2273   2015

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    DOI： 10.1039/c4tc02723j

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  • Nematic liquid crystal anchoring strengths of high density polymer brush surfaces Reviewed

    Sato, O., Iwata, N., Kasai, T., Tsujii, Y., Kang, S., Watanabe, J., Tokita, M.

    Liquid Crystals   42 ( 2 )   181 - 188   2015

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    DOI： 10.1080/02678292.2014.974230

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  • PA46 Development of Broadband Reflection Cholesteric Liquid Crystalline Films using High Birefringent Nematic Liquid Crystals

    KUWAHARA Hiroki, KANG Sungmin, SAKAJIRI Koichi, WATANABE Junji, TOKITA Masatoshi

    Proceedings of Japanese Liquid Crystal Society Annual meeting   2015   _PA46 - 1_-_PA46-2   2015

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    We synthesized photo-cross-linkable high-birefringent LC molecules and prepared LC films by irradiating UV light. The films exhibited high birefringence (Δn) as large as 0.4. When doped with a chiral compound, the resulting cholesteric films exhibited reflection bands with the width (Δλ) increasing proportionally with Δn to be as large as 186 nm.

    DOI： 10.11538/ekitou.2015.0__PA46

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  • PA63 Liquid crystalline structure of polymethylenes with phenyl benzoate mesogen groups attached to side chains

    AIZAWA Yosuke, KOSHIMIZU Noboru, SAKAJIRI Koichi, TOKITA Masatoshi, SHIKINAKA Kazuhiro, SHIGEHARA Kiyotaka

    Proceedings of Japanese Liquid Crystal Society Annual meeting   2015   _PA63 - 1_-_PA63-2   2015

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    A series of polymethylenes with phenyl benzoate mesogen groups linked to each backbone carbon atom via an alkyloxycarbonyl spacer was prepared and their liquid crystal structures were investigated by wide-angle X-ray diffraction method. The liquid crystalline phase behavior of the polymethylenes was largely dependent on the number of spacer carbon atoms. It may be attributed to degree of decoupling of helical main-chain and side-chain mesogen motions. A short spacer can couple helical main-chain and side-chain mesogen motions to let the backbone lose the orientational order due to the isotropization of the side-chain mesogens. On the other hands, the long spacer decouples them to make the polymethylene form a hexagonal columnar phase though the side-chains are in the isotropic state.

    DOI： 10.11538/ekitou.2015.0__PA63

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  • 3A04 Shear Flow Orientations of a Main-Chain Smectic-CA Liquid Crystalline Polymer

    Sugimoto Atsuki, Tokita Masatoshi

    Proceedings of Japanese Liquid Crystal Society Annual meeting   2015   _3A04 - 1_-_3A04-2   2015

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    The smectic CA phase of main-chain BB-5(3-Me) polyester was examined for the orientation under large amplitude oscillatory shear flows. Although the layer normal aligned to the neutral direction at frequencies in the investigated range, the c-director direction was strongly dependent on the frequency. At frequencies ranging from 1-10 Hz, the c-director aligned to the velocity direction, and otherwise, it aligned to the velocity gradient direction.

    DOI： 10.11538/ekitou.2015.0__3A04

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  • PB08 Nematic liquid crystal anchoring strengths of high density polymer brush surfaces Reviewed

    IWATA Naoto, KANG Sungmin, WATANABE Junji, TOKITA Masatoshi, SATO Osamu

    Proceedings of Japanese Liquid Crystal Society Annual meeting   2015 ( 0 )   _PB08 - 1_-_PB08-2   2015

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    We examined the anchoring force of nematic liquid crystal (NLC) on high-density polystyrene (PS), poly(methyl methacrylate) (PMMA), poly(ethyl methacrylate) (PEMA), and poly(hexyl methacrylate) (PHMA) brushes for by the electro-optical properties of the in-plane switching cells consisting of polymer-grafted substrates. With increasing temperature the anchoring coefficient began to decrease at a temperature which correlates with the glass transition temperature (Tg) of each polymer.

    DOI： 10.11538/ekitou.2015.0__PB08

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  • ナノファイバーの意外な活用例～安価なITO代替フレキシブル透明導電膜の可能性〜

    坂尻浩一, 東啓介, 渡辺順次, 松本英俊, 戸木田雅利

    WEB Journal   2014.12

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  • ナノダイヤモンドを用いた透明スクリーン

    坂尻 浩一, 増子 史織, 金子 拓馬, 増田 治加, 藤村 忠正, 渡辺順次, 戸木田 雅利

    日本画像学会誌   Vol. 53 ( No. 5 )   2014.10

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    DOI： 10.11370/isj.53.426

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  • Alkylated Cage Silsesquioxane Forming a Long-Range Straight Ordered Hierarchical Lamellar Nanostructure Reviewed

    Lei Wang, Yoshihito Ishida, Rina Maeda, Masatoshi Tokita, Shin Horiuchi, Teruaki Hayakawa

    LANGMUIR   30 ( 32 )   9797 - 9803   2014.8

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    DOI： 10.1021/la501728z

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    Other Link： http://orcid.org/0000-0002-1704-5841

  • 主鎖型液晶性ポリエステルを導入したブロック共重合体のミクロ相分離構造

    KOGA MAITO, TOKITA MASATOSHI

    液晶   18 ( 3 )   132 - 138   2014.7

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  • Self-Assembly of Flexible-Semiflexible-Flexible Triblock Copolymers

    Maito Koga, Kohei Abe, Kazunori Sato, Jun Koki, Sungmin Kang, Koichi Sakajiri, Junji Watanabe, Masatoshi Tokita

    MACROMOLECULES   47 ( 13 )   4438 - 4444   2014.7

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    DOI： 10.1021/ma500798z

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  • Bent Molecules with a 60 degrees Central Core Angle that Form B7 and B2 Phases Reviewed

    Eun-Woo Lee, Koji Takimoto, Masatoshi Tokita, Junji Watanabe, Sungmin Kang

    ANGEWANDTE CHEMIE-INTERNATIONAL EDITION   53 ( 31 )   8216 - 8220   2014.7

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    DOI： 10.1002/anie.201403762

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  • ナノファイバーを利用したアルミニウム透明導電膜の開発

    坂尻浩一, 東啓介, 渡辺順次, 松本英俊, 戸木田雅利

    ケミカルエンジニヤリング   2014.6

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  • 安価で容易に作製できるフレキシブル透明導電膜

    東啓介, 坂尻浩一, 松本英俊, 戸木田雅利, 渡辺順次

    機能材料   2014.5

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  • Decrease in the isotropization temperature and enthalpy of main-chain polymer smectic liquid crystals as a result of the inclusion of chain ends Reviewed

    Chiharu Takahashi, Shusuke Yoshihara, Sungmin Kang, Koichi Sakajiri, Junji Watanabe, Masatoshi Tokita

    POLYMER   55 ( 10 )   2609 - 2613   2014.5

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    DOI： 10.1016/j.polymer.2014.03.034

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  • ナノ加工した「アルミ蒸着PETフィルム」～安価なITO代替透明導電フィルムへの可能性～

    坂尻浩一, 東啓介, 松本英俊, 戸木田雅利, 渡辺順次

    MATERIAL STAGE   2014.4

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  • Highly birefringent side-chain LC polymethacrylate with a dinaphthyl-acetylene mesogenic unit Reviewed

    Sungmin Kang, Shunpei Nakajima, Yuki Arakawa, Masatoshi Tokita, Junji Watanabe, Gen Ichi Konishi

    Polymer Chemistry   5 ( 7 )   2253 - 2258   2014.4

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    DOI： 10.1039/c3py01528a

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  • Main-chain smectic liquid crystalline polymer exhibiting unusually high thermal conductivity in an isotropic composite

    Shusuke Yoshihara, Masatoshi Tokita, Toshiaki Ezaki, Mitsuru Nakamura, Masashi Sakaguchi, Kazuaki Matsumoto, Junji Watanabe

    Journal of Applied Polymer Science   131 ( 6 )   n/a - n/a   2014.3

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    DOI： 10.1002/app.39896

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  • Facile fabrication of transparent metal nanowire networks using wet chemical etching with an electrospun nanofiber Reviewed

    Keisuke Azuma, Koichi Sakajiri, Hidetoshi Matsumoto, Sungmin Kang, Junji Watanabe, Masatoshi Tokita

    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   247   2014.3

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  • Main- Chain Smectic Liquid Crystalline Polymer Exhibiting Unusually High Thermal Conductivity in an Isotropic Composite

    Shusuke Yoshihara, Masatoshi Tokita, Toshiaki Ezaki, Mitsuru Nakamura, Masashi Sakaguchi, Kazuaki Matsumoto, Junji Watanabe

    JOURNAL OF APPLIED POLYMER SCIENCE   131 ( 6 )   2014.3

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    DOI： 10.1002/app.39896

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  • Influence of molecular orientation direction on the in-plane thermal conductivity of polymer/hexagonal boron nitride composites

    Shusuke Yoshihara, Masashi Sakaguchi, Kazuaki Matsumoto, Masatoshi Tokita, Junji Watanabe

    Journal of Applied Polymer Science   131 ( 3 )   n/a - n/a   2014.2

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    DOI： 10.1002/app.39768

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  • Cholesteric induction power of beta-galactose derivatives Reviewed

    Kazuhiro Marumo, Manabu Itoh, Sungmin Kang, Koichi Sakajiri, Junji Watanabe, Masatoshi Tokita

    LIQUID CRYSTALS   41 ( 2 )   234 - 238   2014.2

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    DOI： 10.1080/02678292.2013.851288

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  • Influence of Molecular Orientation Direction on the In-plane Thermal onductivity of Polymer/Hexagonal Boron Nitride Composites

    Shusuke Yoshihara, Masashi Sakaguchi, Kazuaki Matsumoto, Masatoshi Tokita, Junji Watanabe

    JOURNAL OF APPLIED POLYMER SCIENCE   131 ( 3 )   2014.2

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    DOI： 10.1002/app.39768

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  • 電界紡糸ナノファイバーをマスクにしたウエットエッチングによるフレキシブル透明導電フィルムの簡便な製造法

    戸木田雅利, 渡辺順次, 坂尻浩一, 松本英俊, 東啓介

    セラミックス   2014.1

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  • Facile fabrication of transparent and conductive nanowire networks by wet chemical etching with an electrospun nanofiber mask template Reviewed

    Keisuke Azuma, Koichi Sakajiri, Hidetoshi Matsumoto, Sungmin Kang, Junji Watanabe, Masatoshi Tokita

    MATERIALS LETTERS   115   187 - 189   2014.1

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    DOI： 10.1016/j.matlet.2013.10.054

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    Other Link： http://orcid.org/0000-0002-4949-1184

  • Helical Structures of N-Methylated Aromatic Oligoamides: A Density Functional Study Reviewed

    Kawauchi, Susumu, Hayashi, Yoshihiro, Otsu, Shun, Hiyoshi, Junya, Natsumeda, Takafumi, Okuno, Yoshishige, Nishikawa, Joe, Tokita, Masatoshi an, Watanabe, Junji, Simos, TE, Kalogiratou, Z., Monovasilis, T.

    International Conference of Computational Methods in Sciences and Engineering 2014 (Iccmse 2014)   1618   967 - 970   2014

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    DOI： 10.1063/1.4897894

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  • High-HTP macrocyclized phenyl cinnamate dimer utilizable as photo-responsive chiral dopant for nematic liquid crystals

    Junji Watanabe, Manabu Itoh, Kazuhiro Marumo, Yoshihiro Harada, Sungmin Kang, Koichi Sakajiri, Masatoshi Tokita

    21st International Display Workshops 2014, IDW 2014   1   50 - 51   2014

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  • Micro-Phase Separated Structures of Block Copolymers Having a Semiflexible Liquid Crystalline Main-Chain Polyester Block Reviewed

    Maito Koga, Masatoshi Tokita

    KOBUNSHI RONBUNSHU   71 ( 11 )   501 - 507   2014

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    DOI： 10.1295/koron.71.501

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  • Alkylated cage silsesquioxanes: a comprehensive study of thermal properties and self-assembled structure Reviewed

    Lei Wang, Yoshihito Ishida, Rina Maeda, Masatoshi Tokita, Teruaki Hayakawa

    RSC ADVANCES   4 ( 66 )   34981 - 34986   2014

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    DOI： 10.1039/c4ra04987j

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  • “Face-on” oriented π-conjugated polymers containing 1,3,4-thiadiazole moiety investigated with synchrotron GIXS measurements: Relationship between morphology and PSC performance Reviewed

    Fukuta, S., Koganezawa, T., Tokita, M., Kawauchi, S., Mori, H., Ueda, M., Higashihara, T.

    Journal of Photopolymer Science and Technology   27 ( 3 )   351 - 356   2014

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    DOI： 10.2494/photopolymer.27.351

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  • ナノファイバーを利用したフレキシブル透明導電フィルムを開発

    東啓介, 坂尻浩一, 松本英俊, 姜聲敏, 渡辺順次, 戸木田雅利

    高分子   2013.12

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  • Influence of smectic liquid crystallinity on lamellar microdomain structure in a main-chain liquid crystal block copolymer fiber

    Maito Koga, Kazunori Sato, Sungmin Kang, Koichi Sakajiri, Junji Watanabe, Masatoshi Tokita

    Macromolecular Chemistry and Physics   214 ( 20 )   2295 - 2300   2013.10

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    DOI： 10.1002/macp.201300353

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  • Macrocyclised phenyl cinnamate dimer utilisable as photoresponsive chiral dopant for nematic liquid crystals Reviewed

    Masatoshi Tokita, Manabu Itoh, Kazuhiro Marumo, Yoshihiro Harada, Sunmin Kang, Koichi Sakajiri, Junji Watanabe

    LIQUID CRYSTALS   40 ( 7 )   900 - 905   2013.7

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    DOI： 10.1080/02678292.2013.790094

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  • Lamellar morphology of an ABA triblock copolymer with a main-chain nematic polyester central block

    Kazunori Sato, Maito Koga, Sungmin Kang, Koichi Sakajiri, Junji Watanabe, Masatoshi Tokita

    Macromolecular Chemistry and Physics   214 ( 10 )   1089 - 1093   2013.5

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    DOI： 10.1002/macp.201300073

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  • Biaxial and antiferroelectric structure of the orthogonal smectic phase of a bent-shaped molecule and helical structure in a chiral mixture system Reviewed

    Sungmin Kang, Ha Nguyen, Shunpei Nakajima, Masatoshi Tokita, Junji Watanabe

    Physical Review E - Statistical, Nonlinear, and Soft Matter Physics   87 ( 5 )   2013.5

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    DOI： 10.1103/PhysRevE.87.052501

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  • Biaxial and antiferroelectric structure of the orthogonal smectic phase of a bent-shaped molecule and helical structure in a chiral mixture system Reviewed

    Sungmin Kang, Ha Nguyen, Shunpei Nakajima, Masatoshi Tokita, Junji Watanabe

    PHYSICAL REVIEW E   87 ( 5 )   2013.5

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    DOI： 10.1103/PhysRevE.87.052501

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  • Phase behaviors of agarose gel Reviewed

    Morita T, Narita T, Mukai S, Yanagisawa M, Tokita

    Aip Advances   3 ( 4 )   2013.4

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    DOI： 10.1063/1.4802968

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  • Thermal Diffusivity of Hexagonal Boron Nitride Composites Based on Cross-Linked Liquid Crystalline Polyimides Reviewed

    Yu Shoji, Tomoya Higashihara, Masatoshi Tokita, Junko Morikawa, Junji Watanabe, Mitsuru Ueda

    ACS APPLIED MATERIALS & INTERFACES   5 ( 8 )   3417 - 3423   2013.4

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    DOI： 10.1021/am400450p

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  • Enlarged helical twisting power in chiral cyclic dimers based on conventional chiral alkyl diols Reviewed

    Manabu Itoh, Hiromitsu Hegi, Kazuhiro Marumo, Koichi Sakajiri, Sungmin Kang, Masatoshi Tokita, Junji Watanabe

    LIQUID CRYSTALS   40 ( 3 )   339 - 344   2013.3

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    DOI： 10.1080/02678292.2012.747706

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  • Thermotropic behavior of syndiotactic polymethylenes with alkyloxycarbonyl side chains Reviewed

    Tokita, M., Shikinaka, K., Hoshino, T., Fujii, K., Mikami, J., Koshimizu, N., Sakajiri, K., Kang, S., Watanabe, J., Shigehara, K.

    Polymer   54 ( 3 )   995 - 998   2013.2

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    DOI： 10.1016/j.polymer.2012.12.072

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  • Viscoelastic PS brush surface offering strong anchoring at low temperature and near-zero anchoring at high temperature for LC molecules Reviewed

    Sato, O., Kasai, T., Nomura, A., Tsujii, Y., Kang, S., Tokita, M., Watanabe, J.

    Liquid Crystals   40 ( 2 )   221 - +   2013

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    DOI： 10.1080/02678292.2012.736546

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  • High-density poly(hexyl methacrylate) brushes offering a surface for near-zero azimuthal anchoring of liquid crystals at room temperature Reviewed

    Sato, O., Kasai, T., Sato, M., Sakajiri, K., Tsujii, Y., Kang, S., Watanabe, J., Tokita, M.

    Journal of Materials Chemistry C   1 ( 48 )   7992 - 7995   2013

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    DOI： 10.1039/c3tc31700e

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  • Synthesis and postfunctionalization of rod-coil diblock and coil-rod-coil triblock copolymers composed of poly(3-hexylthiophene) and poly(4-(4′-N, N -dihexylaminophenylethynyl)styrene) segments Reviewed

    Fujita, H., Michinobu, T., Tokita, M., Ueda, M., Higashihara, T.

    Macromolecules   45 ( 24 )   9643 - 9656   2012.12

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    DOI： 10.1021/ma301692b

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  • Well-Ordered Lamellar Microphase-Separated Morphology of an ABA Triblock Copolymer Containing a Main-Chain Liquid Crystalline Polyester as the Middle Segment 2: Influence of Amorphous Segment Molecular Weight Reviewed

    Koga Maito, Ishige Ryohei, Sato Kazunori, Ishii Toshinari, Kong Sungmin, Sakajiri Koichi, Watanabe Junji, Tokita Masatoshi

    Macromolecules   45 ( 23 )   9383 - 9390   2012.12

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    DOI： 10.1021/ma3015307

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  • Identifying smectic I phase of main-chain PB-10 polyester consisting of 4,4 '-biphenol and 1,10-dodecanoic acid by fibre X-ray diffraction Reviewed

    Masatoshi Tokita, Shuhei Okuda, Shusuke Yoshihara, Chiharu Takahashi, Sungmin Kang, Koichi Sakajiri, Junji Watanabe

    POLYMER   53 ( 24 )   5596 - 5599   2012.11

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    DOI： 10.1016/j.polymer.2012.09.035

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  • Banana-shaped molecular architecture: Formation of large columns composed of two concentrically enclosed layers Reviewed

    Kang, S., Ishige, R., Lee, E.-W., Tokita, M., Watanabe, J.

    Journal of Materials Chemistry   22 ( 40 )   21448 - 21452   2012.10

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    DOI： 10.1039/c2jm34051h

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  • Formation of Regularly Spaced Wetting Ridges at 1 mu m Intervals on the Surface of a Liquid-Crystalline Polymer Reviewed

    Shu-hei Okuda, Shu-suke Yoshihara, Sungmin Kang, Masatoshi Tokita, Junji Watanabe

    LANGMUIR   28 ( 41 )   14518 - 14521   2012.10

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    DOI： 10.1021/la303335x

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  • Structural and mechanical properties of Laponite-PEG hybrid films Reviewed

    Shikinaka, K., Aizawa, K., Murakami, Y., Osada, Y., Tokita, M., Watanabe, J., Shigehara, K.

    Journal of Colloid and Interface Science   369 ( 1 )   470 - 476   2012.7

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    DOI： 10.1016/j.jcis.2011.11.079

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  • Novel Behavior in Shear Flow Orientation of Side-Chain Polymethacrylate Nematic Liquid Crystals Reviewed

    Masatoshi Tokita, Aya Ikoma, Toshinari Ishii, Sungmin Kang, Junji Watanabe, Tatsuro Matsuoka

    MACROMOLECULES   45 ( 11 )   4857 - 4862   2012.6

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  • 平成23年度ナノファイバー技術戦略研究委員会講演会レポート

    松本英俊, 戸木田雅利, 赤坂修一

    2012.1

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  • A Report of Lecture Meeting of Strategic Research Committee for Nanofiber Technology, 2011 Reviewed

    Hidetoshi Matsumoto, Masatoshi Tokita, Shuichi Akasaka

    SEN-I GAKKAISHI   68 ( 1 )   P38 - P39   2012.1

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  • Notable formation of a cubic phase from small bent-angle molecules based on the 1,7-naphthalene central core and alkylthio tails Reviewed

    Sungmin Kang, Motoi Harada, Xiaodong Li, Masatoshi Tokita, Junji Watanabe

    SOFT MATTER   8 ( 6 )   1916 - 1922   2012

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    DOI： 10.1039/c1sm06554h

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  • 1a14 Liquid crystal anchoring on high-density polystyrene brush surface Reviewed

    kasai Takahiro, Sato Osamu, Tokita Masatoshi, Kang Sungmin, Watanabe Junji, Nomura Akihiro, Tsujii Yoshinobu

    Proceedings of Japanese Liquid Crystal Society Annual meeting   2012 ( 0 )   _1a14 - 1_-_1a14-2   2012

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    The orientation of a nematic liquid crystal (NLC) on high-density polystyrene (PS) brushes was examined. The NLC injected into the cell consisting of the PS-grafted substrates was oriented by cooling the cell from isotropic temperature of LC to room temperature (RT) at a magnetic field. While the cell exhibited electro-optical properties typical for the LC cells at RT, at higher temperature showed the behaviors that are explainable if the anchoring molecules rotates in the field-on state, and in the subsequent field-off state.

    DOI： 10.11538/ekitou.2012.0__1a14

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  • Helix-helix transition of poly(beta-phenylpropyl L-aspartate) embedded in stable helical poly(gamma-phenylethyl glutamate) matrix Reviewed

    Koichi Sakajiri, Koji Satoh, Chu-Chun Yen, Masatoshi Tokita, Junji Watanabe

    POLYMER   52 ( 22 )   5053 - 5057   2011.10

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    DOI： 10.1016/j.polymer.2011.09.008

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  • Calamitic Smectic A--Polar Smectic AP

    Nguyen Ha, Kang Sungmin, Tokita Masatoshi, Watanabe Junji

    Jpn J Appl Phys   50 ( 7 )   71602 - 071602-4   2011.7

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    New homologs of bent molecules with a large bent-angle central core of 4,6-dichloro benzene and an alkylthio terminal tail have been synthesized. Although the corresponding alkoxy-tail homologs show only the calamitic phases because of its large bent angles around 160°, the new homologs with an alkylthio tail exhibit the antiferroelectric smectic APtext{A(SmAPtext{A) banana phase that is transformed on cooling from the calamitic smectic A (SmA) phase. The biaxial polar packing of bent molecules in the SmAPtext{Aphase is considered to arise from the hindered rotation around the molecular long axis due to the expansion of the mesophase temperatures to a lower temperature region. This study indicates that the bent molecules, even with a large bent angle, have the potential to form a switchable banana phase with a remarkable decrease in its phase temperature range to around 60 °C.

    DOI： 10.1143/JJAP.50.071602

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  • Calamitic Smectic A-Polar Smectic AP(A) Transition Observed in Bent Molecules with Large Bent-Angle Central Core of 4,6-Dichlorobenzene and Alkylthio Terminal Tail Reviewed

    Ha Nguyen, Sungmin Kang, Masatoshi Tokita, Junji Watanabe

    JAPANESE JOURNAL OF APPLIED PHYSICS   50 ( 7 )   2011.7

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    DOI： 10.1143/JJAP.50.071602

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  • Well-Ordered Lamellar Microphase-Separated Morphology of an ABA Triblock Copolymer Containing a Main-Chain Liquid Crystalline Polyester as the Middle Segment Reviewed

    Ishige Ryohei, Ishii Toshinari, Tokita Masatoshi, Koga Maito, Kang Sungmin, Watanabe Junji

    MACROMOLECULES   44 ( 12 )   4586 - 4588   2011.6

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    DOI： 10.1021/ma200409f

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  • Synthesis and self-assembly of thermotropic block copolymer with long alkyl tethered cage silsesquioxane in the side chain Reviewed

    Yoshihito Ishida, Tomoyasu Hirai, Tomoyasu Hirai, Raita Goseki, Masatoshi Tokita, Masa Aki Kakimoto, Teruaki Hayakawa

    Journal of Polymer Science, Part A: Polymer Chemistry   49   2653 - 2664   2011.6

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  • Two-Step Smectic CA Phase Formation from Isotropic Liquid upon Supercooling in Main-Chain Liquid-Crystalline BB-5(1-Me) Polyester Reviewed

    Ishige Ryohei, Tokita Masatoshi, Funaoka Shin-ichiro, Kang Sungmin, Watanabe Junji

    MACROMOLECULAR CHEMISTRY AND PHYSICS   212 ( 1 )   48 - 54   2011.1

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    DOI： 10.1002/macp.201000398

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  • Unusual Chain Configuration of Main-Chain Liquid Crystal Polyesters Having Y-Shaped Mesogens In Nematic Phase Reviewed

    M. Tokita, K. Kato, R. Ishige, S. Okuda, S. Kawauchi, K. Okoshi, S. Kang, J. Watanabe

    Polymer   52 ( 25 )   5830 - 5835   2011

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    DOI： 10.1016/j.polymer.2011.10.047

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  • Nematic-nematic phase separation from uniform nematic domain in polymer LC and low-molecular-weight LC mixture showing network lattice formation in pinning stage Reviewed

    Takayuki Sugiyama, Osamu Sato, Sungmin Kang, Masatoshi Tokita, Junji Watanabe

    SOFT MATTER   7 ( 15 )   6998 - 7002   2011

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    DOI： 10.1039/c1sm05662j

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  • Enhancement of the cholesteric induction power by macrocyclization in liquid crystal dimers with a chiral spacer Reviewed

    Itoh, M., Tokita, M., Hegi, H., Hayakawa, T., Kang, S., Watanabe, J.

    Journal of Materials Chemistry   21 ( 6 )   1697 - 1699   2011

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    DOI： 10.1039/c0jm03161e

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  • Switchable Columnar Phase Formed from Bent-Shaped Molecules with Low Bent- Angle Naphthalene Central Core and Alkylthio Tail Reviewed

    Sungmin Kang, xiaodong li, Susumu Kawauchi, Masatoshi Tokita, Junji Watanabe

    Molecular Crystals and Liquid Crystals   Vol. 549   184 - 193   2011

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    DOI： 10.1080/15421406.2011.581531

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  • Regular undulation and polarization modulation on the film surface of a planarly aligned SmC* polymer Reviewed

    Zhang Chunying, Ishige Ryohei, Yasumatsu Ryou, Kang Sungmin, Tokita Masatoshi, Watanabe Junji

    SOFT MATTER   7 ( 1 )   258 - 264   2011

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    DOI： 10.1039/c0sm00668h

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  • High-Density poly(methyl methacrylate) brushes as anchoring surfaces of nematic liquid crystals Reviewed

    M. Tokita, O. Sato, Y. Inagaki, A. Nomura, Y. Tsujii, S. Kang, T. Fukuda, J. Watanabe

    Japanese Journal of Applied Physics   50 ( 7,Issue 1 )   1 - 71701   2011

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    The orientation of a nematic liquid crystal (LC) on high-density poly(methyl methacrylate) (PMMA) brushes was examined. The nematic LC was injected into the cell consisting of two substrates on which PMMA chains were grafted with a density of 0.299 chains nm-2. It showed degenerate planar orientation, which became uniform on cooling from 120 °C at a magnetic field of 1 T. At ambient temperature, the aligned LC cell showed typical electro-optical properties when driven in the in-plane switching (IPS) mode, indicating that the LC molecules anchored to the brushes with the director parallel to the magnetic field direction. In contrast, at temperatures higher than 65 °C, the transmittance of the cell was time-dependent when driven over a prolonged period, suggesting that the anchoring direction rotated toward the electric field direction. Such temperature-dependent anchoring of the LC can be associated with the viscoelasticity of the PMMA brushes.

    DOI： 10.1143/JJAP.50.071701

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  • Control over Internal Structure of Liquid Crystal Polymer Nanofibers by Electrospinning Reviewed

    Keita Nakashima, Kazuma Tsuboi, Hidetoshi Matsumoto, Ryohei Ishige, Masatoshi Tokita, Junji Watanabe, Akihiko Tanioka

    MACROMOLECULAR RAPID COMMUNICATIONS   31 ( 18 )   1641 - 1645   2010.9

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    DOI： 10.1002/marc.201000211

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  • Antiferroelectric Switching between Optically Isotropic and Birefringent B2 Phases of Bent-Shaped Molecules with High Tilt Angle of 45º

    Seng Kue Lee, Sungmin Kang, Masatoshi Tokita, Junji Watanabe

    Jpn. J. Appl. Phys.   Vol. 49   2010.8

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  • 27.4L: Late-news paper: A new mode LCD with intrinsic continuous grayscale memory using ferroelectric liquid crystalline polymer

    Osamu Sato, Dong-Uk Cho, Isao Adachi, Katsuyoshi Hiraki, Kento Okoshi, Masatoshi Tokita, Junji Watanabe

    48th Annual SID Symposium, Seminar, and Exhibition 2010, Display Week 2010   1   394 - 396   2010

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  • Helical twisting power of cyclic dimer molecules with chiral spacer:Graduate School of Engineering, Tokyo Institute of Technology

    Hegi Hiromitsu, Ito Manabu, Kang Sungmin, Tokita Masatoshi, Watanabe Junji, ABE Yuichiro, ITO Manabu

    Proceedings of Japanese Liquid Crystal Society Annual meeting   2010   1b12 - 1b12   2010

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    We found that chiral dopants of cyclic dimer molecules with chiral spacer as an optically active moiety showed large helical twisting power for a nematic liquid crystal. The chiral dopant showing the largest helical twisting power of 61 can induce a helical pitch comparable to the visible light wavelength at small fraction of 5wt%.

    DOI： 10.11538/ekitou.2010.0.1b12.0

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  • Hyperpolarizability of an Aromatic Polyester Reviewed

    Susumu Kawauchi, Masayuki Kaneko, Tatsuya Imase, Yoshiaki Taguchi, Chu-Chun Yen, Sungmin Kang, Masatoshi Tokita, Junji Watanabe

    KOBUNSHI RONBUNSHU   67 ( 3 )   209 - 213   2010

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  • Spontaneous Formation of Polar Liquid Crystal in Lyotropic Solution of Helical Poly(gamma-Benzyl Glutamate) Reviewed

    Chu-Chu Yen, Yoshiaki Taguchi, Masatoshi Tokita, Junji Watanabe

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   516   91 - 98   2010

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    DOI： 10.1080/15421400903400712

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  • Influence of DC Electric Field on Soft Mode of Main-Chain Ferroelectric Liquid-Crystalline Polyesters: Polymeric Effect on Collective Fluctuation Reviewed

    Kazuyuki Hiraoka, Sachie Toyoda, Yasuhiro Hourai, Masatoshi Tokita, Junji Watanabe

    APPLIED PHYSICS EXPRESS   3 ( 1 )   2010

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    DOI： 10.1143/APEX.3.011701

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  • Rubbingless orientation and anchoring of nematic liquid crystal on high-density poly(methyl methacrylate) brushes Reviewed

    Inagaki Yusuke, Osamu Sato, Tokita Masatoshi, Kang Sungmin, Watanabe Junji, Nomura Akihiro, Tsujii Yoshinobu, Fukuda Takeshi

    Proceedings of Japanese Liquid Crystal Society Annual meeting   2010 ( 0 )   1c11 - 1c11   2010

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    We propose rubbing-less liquid crystal (LC) alignment by using high-density poly(methyl methacrylate) (PMMA) brushes. Homogeneously aligned cell consisting of the glass plates with polymer brushes was obtained by applying magnetic field in the plane parallel to the substrates on cooling from a temperature of 120 ºC as high as the glass transition temperature of the brushes to ambient temperature. The orientation direction was changed by in-plane electric field, then recovered immediately on turning off the field, showing that the polymer brushes are effective in anchoring the nematic LC like a rubbed polyimide film.

    DOI： 10.11538/ekitou.2010.0.1c11.0

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  • Unusual Formation of Switchable Hexagonal Columnar Phase by Bent-Shaped Molecules with Low Bent-Angle Naphthalene Central Core and Alkylthio Tail Reviewed

    Xiaodong Li, Sungmin Kang, Seng Kue Lee, Masatoshi Tokita, Junji Watanabe

    JAPANESE JOURNAL OF APPLIED PHYSICS   49 ( 12 )   2010

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    DOI： 10.1143/JJAP.49.121701

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  • 分子から材料までどんどんつながる高分子

    渡辺順次, 足立 馨, 打田 聖, 久保山敬一, 黒木重樹, 杉山賢次, 戸木田雅利, 中嶋 健, 早川晃鏡

    2009.12

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  • Regular Network Pattern Evolution Observed in Phase Separation in Low-Molecular-Weight LC and LC Block Copolymer Mixture Reviewed

    Osamu Sato, Yusuke Inagaki, Sungmin Kang, Masatoshi Tokita, Junji Watanabe

    MACROMOLECULES   42 ( 15 )   5442 - 5445   2009.8

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    DOI： 10.1021/ma901037c

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  • Synthesis and chemical properties of dielectric polyphenylenes with nitro group

    Abe, M., Tokita, M., Watanabe, J., Sakai, Y., Yamamoto, T.

    Journal of Applied Polymer Science   111 ( 5 )   2009

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    DOI： 10.1002/app.29287

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  • Structural characteristics of thermotropic SmA layer phase formed from rigid-rod polysilanes

    Hideki Oka, Goro Suzaki, Susumu Edo, Akiko Suzuki, Masatoshi Tokita, Junji Watanabe

    Macromolecules   41 ( 21 )   7783 - 7786   2008.11

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    DOI： 10.1021/ma801606g

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  • Mesomorphic Behavior of Bent-shaped Molecules with Non-aromatic Central Core Based on Bis(p-hydroxyphenyl)methane Reviewed

    Seng Kue Lee, Lu Shi, Masatoshi Tokita, Junji Watanabe

    CHEMISTRY LETTERS   37 ( 11 )   1134 - 1135   2008.11

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    DOI： 10.1246/cl.2008.1134

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  • High Chiral Induction in Cholesteric Liquid Crystal of Aromatic Polyesters with Chiral Naphthyl Ethylamine Groups at Their Polymer Ends Reviewed

    Kaoru Fukuda, Susumu Edo, Masakane Muto, Masatoshi Tokita, Junji Watanabe

    JAPANESE JOURNAL OF APPLIED PHYSICS   47 ( 11 )   8479 - 8482   2008.11

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    DOI： 10.1143/JJAP.47.8479

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  • Elongation Behavior of a Main-Chain Smectic Liquid Crystalline Elastomer Reviewed

    Ishige Ryohei, Osada Kensuke, Tagawa Hirotaka, Niwano Hiroko, Tokita Masatoshi, Watanabe Junji

    Macromolecules   41 ( 20 )   7566 - 7570   2008.10

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    DOI： 10.1021/ma801665a

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  • Smectic a formation by twin dimers assuming U-shaped conformation Reviewed

    Naito Yu, Ishige Ryohei, Itoh Manabu, Tokita Masatoshi, Watanabe Junji

    Chemistry Letters   37 ( 8 )   880 - 881   2008.8

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    DOI： 10.1246/cl.2008.880

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  • Regular undulation morphology observed on fracture and film surfaces of chiral S-C* polymer Reviewed

    Zhang Chunying, Edo Susumu, Ishige Ryouhei, Tokita Masatoshi, Watanabe Junji

    Macromolecules   41 ( 14 )   5361 - 5364   2008

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    DOI： 10.1021/ma8005119

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  • Synthesis and self-assembling of wholly aromatic block co-oligomers: Oligo (ether sulfone)-b-oligo(ether ketone) with sulfonic acid terminal groups Reviewed

    Raita Goseki, Teruaki Hayakawa, Masa-aki Kakimoto, Masatoshi Tokita, Junji Watanabe

    JOURNAL OF PHOTOPOLYMER SCIENCE AND TECHNOLOGY   20 ( 2 )   189 - 192   2007

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  • Thermally reversible distortion observed for monodomain nematic elastomer of cross-linked main-chain polyester Reviewed

    M. Tokita, H. Tagawa, R. Ishige, K. Osada, J. Watanabe

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   465   193 - 202   2007

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    DOI： 10.1080/15421400701205925

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  • Wholly aromatic rod-rod type block molecules: Synthesis and self-assembled structure studies Reviewed

    Hayakawa, T., Goseki, R., Kakimoto, M., Tokita, M., Watanabe, J., Horiuchi, S.

    Abstracts of Papers of the American Chemical Society   233   2007

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    233rd National Meeting of the Cellulose-and-Renewable-Materials-Division of the American-Chemical-Society (ACS), Chicago, IL, MAR 25-29, 2007

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  • Synthesis of sulfonic acid-terminated, four-armed dendrons Reviewed

    Goseki, R., Morishita, F, a, Watanabe, M., Hayakawa, T., Kakimoto, M., Tokita, M., Watanabe, J.

    Abstracts of Papers of the American Chemical Society   233   2007

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    233rd National Meeting of the Cellulose-and-Renewable-Materials-Division of the American-Chemical-Society (ACS), Chicago, IL, MAR 25-29, 2007

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  • Synthesis and self-assembling of wholly aromatic block co-oligomers: Oligo(ether sulfone)-b-oligo(ether ketone with sulfonic acid terminal groups) Reviewed

    Goseki R, Hayakawa T, Kakimoto M.-A, Tokita M, Watanabe J

    Journal of Photopolymer Science and Technology   20 ( 6 )   771 - 776   2007

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  • Fabrication of hierarchically ordered hybrid structures over multiple length scales via direct etching of self-organized polyhedral oligomeric silsesquioxane (POSS) functionalized block copolymer films Reviewed

    Hayakawa, T., Seino, M., Goseki, R., Hirai, T., Kikuchi, R., Kakimoto, MA, Tokita, M., Yokoyama, H., Horiuchi, S.

    Polymer Journal   38 ( 6 )   567 - 576   2006.8

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    DOI： 10.1295/polymj.PJ20051401

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  • Microphase-separated structure in LC-coil diblock copolymer and LC polymer/LC-coil diblock copolymer blends

    Fumihiro Takazawa, Mitsu-Aki Adachi, Masatoshi Tokita, Junji Watanabe

    Polymer Preprints, Japan   55 ( 2 )   4398 - 4399   2006

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  • Shear flow orientation of side-chain nematic liquid crystalline polymer

    Masatoshi Tokita, Satoshi Masuyama, Mitsu-Aki Adachi, Fumihiro Takazawa, Junji Watanabe

    Polymer Preprints, Japan   55 ( 2 )   3532   2006

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  • Conformational study of block copolymer containing Poly(aspartate ester) and polystyrene in solid state

    Toshihiro Iwai, Masatoshi Tokita, Junji Watanabe, Tomomichi Itoh, Eiji Ihara, Kenzo Inoue

    Polymer Preprints, Japan   55 ( 1 )   2118   2006

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  • Orientation of liquid crystal block anchoring on amorphous cylinder microdomain in LC-coil diblock copolymer

    Mitsuaki Adachi, Fumihiro Takazawa, Masatoshi Tokita, Junji Watanabe

    Polymer Preprints, Japan   55 ( 1 )   868   2006

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  • Shear flow orientation of thermotropic liquid crystals of rigid-rod polyesters with flexible side chains

    Kengo Tokunaga, Ryohei Ishige, Masatoshi Tokita, Junji Watanabe

    Polymer Preprints, Japan   55 ( 1 )   978   2006

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  • Chiral Memory Effect on Transition between the SmCAb and Crblue

    Izumi Tatsuya, Naitou Yuu, Tokita Masatoshi, Watanabe Junji

    Proceedings of Japanese Liquid Crystal Society Annual meeting   2006   66 - 66   2006

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    Achiral twin dimer mOAM5AMOm with the Shiff's base mesogenic unit forms distinct chiral phase. The phase which has chiral structure is abbreviated Crblue phase. The Crblue phase forms two different optical rotational domains. Interestingly the size and shape of the chiral domains of Crblue phase are not changed at cycling between Crblue phase and higher SmCAb phase under suitable thermal condition. The structure of Crblue phase and relation between Crblue and SmCAb have studied.

    DOI： 10.11538/ekitou.2006.0.66.0

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  • U-shaped smectic liquid crystals organized by twin dimers having brunching point in a spacer part.

    Naito Yu, Izumi Tatsuya, Tokita Masatoshi, Watanabe Junji

    Proceedings of Japanese Liquid Crystal Society Annual meeting   2006   65 - 65   2006

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    The liquid crystal dimer is composed of two mesogenic groups linked by a flexible spacer. It shows interesting structural properties i.e. odd-even effect and segregation of spacer and terminal alkyl chain. While the series of mOAMnAMOm notably exhibit these properties, the odd numbered mOAMnAMOm with a pendent group in the spacer part form a SmA phase. In this SmA, the molecules are likely to take a U-shaped conformation .

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  • Synthesis and characterization of higher order structure of aromatic oligo (ether sulfone)-b-oligo(ether ketone) block co-oligomers Reviewed

    Goseki R, Hayakawa T, Kakimoto M.-A, Tokita M, Watanabe J, Horiuchi S, Yonngui L

    Polymer Preprints, Japan   55 ( 2 )   2567 - 2568   2006

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  • Anisotropic swelling and phase separation of hydroxypropylcellulose in aromatic solvents

    Susumu Edo, Masatoshi Tokita, Junji Watanabe

    Polymer Preprints, Japan   55 ( 2 )   3457   2006

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  • Synthesis and self-assembly of amphiphilic aromatic amide dendrons Reviewed

    Nakasugi S, Takagahara Y, Li L, Fu K, Jikei M, Tokita M, Hayakawa T, Watanabe J, Kakimoto M

    Polymer Preprints, Japan   54 ( 1 )   1602   2005

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  • Shear orientation of a side chain liquid crystalline polymer forming nematic and smectic phase

    Mitsuaki Adachi, Masatoshi Tokita, Naoki Tomikawa, Junji Watanabe

    Polymer Preprints, Japan   54 ( 1 )   769   2005

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  • Polar structure in the nematic liquid crystal formed by aromatic ester

    Masao Koike, Tatsuya Imase, Susumu Kawauchi, Masatoshi Tokita, Junji Watanabe

    Polymer Preprints, Japan   54 ( 1 )   1267   2005

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  • Alignment of microphase-separated structure in liquid crystalline-amorphous diblock copolymer using magnetic field

    Fumihiro Takazawa, Mitsu-Aki Adachi, Naoki Tomikawa, Tomimichi Itoh, Masatoshi Tokita, Junji Watanabe

    Polymer Preprints, Japan   54 ( 1 )   665   2005

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  • Hyperpolarizability components for α- And ω-helical polypeptides in polar crystals determined from second-harmonic generation measurements Reviewed

    Chu-Chun Yen, Fumito Araoka, Masatoshi Tokita, Susumu Kawauchi, Byoungchoo Park, Hideo Takezoe, Junji Watanabe

    Japanese Journal of Applied Physics, Part 1: Regular Papers and Short Notes and Review Papers   43 ( 10 )   7026 - 7031   2004.10

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    DOI： 10.1143/JJAP.43.7026

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  • What is of Young Scientist Committee in the Society of Fiber Science and Technology, Japan?

    Tokita, M.

    Sen'i Gakkaishi   60 ( 6 )   2004

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    DOI： 10.2115/fiber.60.P_359

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  • Polar nematic liquid crystal formed from aromatic polyesters with head-tail character Reviewed

    M Koike, YP Liu, H Tsuchiya, T Imase, M Tokita, S Kawauchi, H Takezoe, J Watanabe

    LIQUID CRYSTALS VIII   5518   190 - 200   2004

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    DOI： 10.1117/122.563058

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  • Phase Behavior and Dynamics for Side-chain Liquid Crystal Polymer Having a Cyanobiphenyl Mesogen

    Tomikawa Naoki, Itoh Tomomichi, Okazaki Yusuke, Yamamoto Jun, Yokoyama Hiroshi, Kawauchi Susumu, Tokita Masatoshi, Watanabe Junji

    Proceedings of Japanese Liquid Crystal Society Annual meeting   2004   199 - 199   2004

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    Publisher：Japanese Liquid Crystal Society  

    We examined the molecular weight dependence of phase transition behavior for poly(6-[4-(4'-cyanophenyl) phonoxy] hexyl acrylate) prepared by ATRP, which shows reentrant polymorphism with the variation of degree of polymerization (Dp). For the samples with moderate molecular weight (Mn 7,900~20,000) nematic, smectic A and reentrant nematic (RN) phase were exhibited whereas that with higher molecular weight only nematic phase was observed. Furthermore, the difference of dynamics in these two nematic phase has been confirmed by dynamic light scattering (DLS) measurements. The two types of nematic phase is found to be definitely distinguished each other with the two characteristics. This result is ascribed to that the increasing of dimerized mesogen acting as physically linking agents of polymer chains. On the basis of the knowledge, the direct RN-N transition is strongly suggested by DLS measurement for the samples with higher molecular weight.

    DOI： 10.11538/ekitou.2004.0.199.0

    CiNii Books

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  • 1C04 Nonlinear Dielectric Behavior of Main-Chain Polymer Ferroelectric Liquid Crystal BB-4^* (2Me) /BB-6

    FURUKAWA Takeo, HORIUCHI Ayumi, YOSHIDA Kazuhiro, TOKITA Masatoshi, WATANABE Junji

    Proceedings of Japanese Liquid Crystal Society Annual meeting   2002   99 - 100   2002

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    The main-chain liquid crystalline copolyester BB-4^* (2-Me) /BB-6 consisting of a biphenyldicarboxylic acid and equimolar mixture of chiral 2-methylbutanediol and hexanediol was examined by means of nonlinear dielectric spectroscopy. The Debye relaxation of the linear permittivity associated with the Goldstone mode motion is accompanied by the characteristic spectra of the third order nonlinear permittivity extending over the three quadrants on the complex plane. The charge response induced by a step-wise electric field exhibits a clear indication of ferroelectric polarization switching. These results substantiated that BB-4^* (2-Me) /BB-6 possesses a ferroelectric character associated with the Sc^* phase despite possible restrictions of mesogen motion by alkylene groups.

    DOI： 10.11538/ekitou.2002.0_99

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  • Side-chain liquid crystalline block copolymers with well defined structures prepared by living anionic polymerization IV. Microphase morphology in blends with coil homopolystyrenes Reviewed

    T Itoh, N Tomikawa, M Yamada, M Tokita, A Hirao, J Watanabe

    POLYMER JOURNAL   33 ( 10 )   783 - 791   2001

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  • Thermotropic smectic liquid crystal pahse formed with hard-rod helical polymers, and its phase transition

    Okoshi Kento, Kamee Hiroyuki, Tokita Masatoshi, Watanabe Junji, Fujiki Michiya

    Proceedings of Japanese Liquid Crystal Society Annual meeting   2001   297 - 298   2001

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    Language：Japanese   Publisher：Japanese Liquid Crystal Society  

    It has been predicted that hard-rod particles form nematic, smectic and columnar liquid crystal phase with only excluded volume effect taken into consideration. We newly found that hard-rod helical polymers with narrow molecular weight distribution form these three phases in its thermotropic liquid crystal state. The layer spacing of the smectic phase evaluated by small angle X-ray scattering (SAXS) is almost identical to the molecular length calculated with number average molecular weight (Mn). It indicates that the system takes the smectic A structure in which molecules orient perpendicularly to the layer. It also exhibits nematic-smectic-columnar phase transition sequence which coincides with theoretical prediction.

    DOI： 10.11538/ekitou.2001.0_297

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  • Characterization for Melt-Spun Fiber of Fluorocarbon Polymer 1. Copolymer of Tetrafluoroethylrnr snf Hexafluoropropylene

    T. Uno, Y. Wakayama, M. Tokita, S. Miyata, H. Shirai

    Sen'i Gakkai-shi   56 ( 12 )   569 - 569   2000

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  • Study on morphology of main chain polyesters forming smectic liquid crystals

    Masatoshi Tokita

    1999.12

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    Publishing type：Doctoral thesis  

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  • Study on Morphology of Main Chain Polyesters Forming Smectic Liquid Crystals

    Masatoshi Tokita

    1999.2

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  • Chain folding in the smectic phase of main-chain polyesters Reviewed

    M Tokita, K Osada, H Tsuchiya, J Watanabe

    KOBUNSHI RONBUNSHU   56 ( 4 )   184 - 194   1999

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  • Thermotropic liquid crystals of main-chain polyesters with a mesogenic 4,4 '-biphenyldicarboxylate unit XII. Unusual molecular orientation in fibers drawn from smectic melt Reviewed

    M Tokita, K Osada, S Kawauchi, J Watanabe

    POLYMER JOURNAL   30 ( 8 )   687 - 690   1998

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  • Thermotropic liquid crystals of main-chain polyesters having a mesogenic 4,4 '-biphenyldicarboxylate unit XI. Smectic liquid crystalline glass Reviewed

    M Tokita, K Osada, J Watanabe

    POLYMER JOURNAL   30 ( 7 )   589 - 595   1998

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  • Thermotropic liquid crystals in main chain polyesters having a mesogenic 4,4'-biphenyldicarboxylate unit .9. Chain folding in solid polyesters crystallized from smectic A Reviewed

    M Tokita, K Osada, J Watanabe

    LIQUID CRYSTALS   23 ( 3 )   453 - 456   1997.9

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  • THERMOTROPIC LIQUID-CRYSTALS OF MAIN-CHAIN POLYESTERS HAVING A MESOGENIC 4,4'-BIPHENYLDICARBOXYLATE UNIT .6. CHIRAL MESOPHASES OF POLYESTERS WITH A (S)-2-METHYLBUTYLENE SPACER Reviewed

    J WATANABE, M HAYASHI, A MORITA, M TOKITA

    MACROMOLECULES   28 ( 24 )   8073 - 8079   1995.11

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Books

  • 分子から材料までどんどんつながる高分子

    2009  （ ISBN:9784621081808 ）

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  • Carbonization of poly(acrylonitrile) grafted on nanoparticle cores

    柿澤勇介, 山崎頌平, 吉田啓一郎, 松本英俊, 戸木田雅利

    繊維学会予稿集(CD-ROM)   76 ( 1 )   2021

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  • X線散乱法と二次元相関法による液晶性ブロック共重合体ラメラ構造の解析

    古賀舞都, 戸木田雅利, 水門潤治, 新澤英之

    繊維学会予稿集(CD-ROM)   74 ( 2 )   2019

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  • X線散乱の二次元相関法による液晶性ブロック共重合体の層構造解析

    古賀舞都, 戸木田雅利, 水門潤治, 新澤英之

    高分子分析討論会講演要旨集   24th   2019

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  • Trial manufacture of nanofibers made from an in-situ UV cross-linked main-chain liquid-crystalline elastomer composed of bibenzoate mesogens

    Ootani Yuta, Tajima Kota, Hiraoka Kazuyuki, Matsumoto Hidetoshi, Tokita Masatoshi, Azuma Keisuke

    Proceedings of Japanese Liquid Crystal Society Annual meeting   2018 ( 0 )   PA11   2018

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    Language：Japanese   Publisher：THE JAPANESE LIQUID CRYSTAL SOCIETY  

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    DOI： 10.11538/ekitou.2018.0_PA11

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  • 時分割微小角入射X線散乱法を用いた固体高分子形燃料電池触媒層形成過程のナノ構造解析

    古賀舞都, 鴻巣裕一, 松本英俊, 戸木田雅利, 増永啓康, 引間孝明, 杉森秀一, 笹部崇, 吉田利彦, 篠原和彦, 平井秀一郎

    高分子学会予稿集(CD-ROM)   66 ( 2 )   2017

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  • Structural Analysis of Catalyst Layer Formation Process for Polymer Electrolyte Fuel Cell Using Time-Resolved X-ray Scattering Technique

    古賀舞都, 鴻巣裕一, 松本英俊, 戸木田雅利, 増永啓康, 引間孝明, 杉森秀一, 笹部崇, 吉田利彦, 篠原和彦, 平井秀一郎

    成形加工シンポジア   2017   2017

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  • ラメラ界面への液晶アンカリングが組成で転移する液晶性ブロック共重合体

    古賀舞都, 若林拓実, 戸木田雅利

    高分子学会予稿集(CD-ROM)   66 ( 2 )   2017

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  • 両端に非晶鎖が結合した主鎖型液晶性ポリエステルのミクロ相分離構

    伊藤涼音, 戸木田雅利, 古賀舞都

    繊維学会予稿集   71 ( 1 (CD-ROM) )   2016

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  • Strategic Research Committee for Nanofiber Technology

    Sen'i Gakkaishi   72 ( 1 )   P - 67-P-67   2016

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    Language：Japanese   Publisher：The Society of Fiber Science and Technology, Japan  

    DOI： 10.2115/fiber.72.P-67

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  • 主鎖型液晶性ポリエステルの両端に架橋セグメントを有する三元ブロック共重合体の昇降温に伴う可逆な伸縮挙動

    古賀舞都, 阿部宏平, 若林拓実, 戸木田雅利

    繊維学会予稿集   70 ( 1 (CD-ROM) )   2015

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  • 高輝度X線を用いた1,3,4-オキサジアゾールおよび1,3,4-チアジアゾール含有π共役高分子薄膜のモルフォロジー解析

    福田斉二郎, 小金澤智之, 戸木田雅利, 川内進, 森秀晴, 上田充, 東原知哉

    高分子学会予稿集(CD-ROM)   63 ( 1 )   2014

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  • Well-ordered periodic nano-structure in ABA triblock copolymers thin films with side-chain liquid crystalline A blocks and main-chain liquid crystalline B block

    ISHIGE RYOHEI, TOKITA MASATOSHI, WATANABE JUNJI, OGAWA HIROKI, TAKAHARA ATSUSHI

    Abstr JSAP MRS Jt Symp (CD-ROM)   ROMBUNNO.17P-PM2-12   2013

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    J-GLOBAL

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  • 主鎖型スメクチック液晶性セグメントがブロック共重合体のラメラ構造に与える影響

    古賀舞都, 佐藤和徳, KANG Sungmin, 渡辺順次, 戸木田雅利

    高分子学会予稿集(CD-ROM)   62 ( 2 )   2013

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  • 非晶性-主鎖型液晶性-非晶性トリブロック共重合体が形成する波状のラメラ構造

    古賀舞都, 佐藤和徳, KANG Sungmin, 渡辺順次, 戸木田雅利

    高分子学会予稿集(CD-ROM)   62 ( 1 )   2013

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  • 主鎖型液晶性ポリエステルを一成分としたブロック共重合体が形成する波状ラメラ構造

    古賀舞都, 佐藤和徳, KANG Sungmin, 渡辺順次, 戸木田雅利

    繊維学会予稿集   68 ( 1 (CD-ROM) )   2013

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  • スメクチック液晶性-非晶性ブロック共重合体繊維の熱処理による構造発展と配向変化

    古賀舞都, 佐藤和徳, KANG Sungmin, 渡辺順次, 戸木田雅利

    繊維学会予稿集   68 ( 1 (CD-ROM) )   2013

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  • 等方性複合材料における主鎖型液晶性ポリエステルマトリックスの高熱伝導性

    吉原秀輔, 吉原秀輔, 戸木田雅利, 坂口雅史, 松本一昭, 渡辺順次

    高分子学会予稿集(CD-ROM)   62 ( 2 )   2013

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  • Higher-order structure analysis of a liquid-crystalline ABA type triblock copolymer containing perfluoroalkyl side group

    ISHIGE RYOHEI, TOKITA MASATOSHI, WATANABE JUNJI, OTSUKA HIDEYUKI, TAKAHARA ATSUSHI

    高分子学会予稿集(CD-ROM)   61 ( 1 )   ROMBUNNO.3L13   2012.5

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  • 主鎖型ネマチック液晶性高分子を中央ブロックに有するABAトリブロック共重合体

    佐藤和徳, 古賀舞都, 戸木田雅利, KANG Sungmin, 渡辺順次

    高分子学会予稿集(CD-ROM)   61 ( 2 )   2012

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  • 主鎖型スメクチック液晶性高分子を有するABAトリブロック共重合体のラメラ状ミクロ相分離構造に与えるスペーサー長の効果

    古賀舞都, 石毛亮平, 戸木田雅利, KANG Sungmin, 渡辺順次

    高分子学会予稿集(CD-ROM)   61 ( 2 )   2012

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  • 電界紡糸とレーザーパターニングによる液晶エラストマー棒状マイクロ粒子の作製

    松本英俊, 中島慶大, 石毛亮平, 坪井一真, 戸木田雅利, 渡邊順次, 谷岡明彦

    繊維学会予稿集   67 ( 1 )   2012

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  • 主鎖型液晶性高分子を有するABAトリブロック共重合体のミクロ相分離構造

    古賀舞都, 佐藤和徳, 戸木田雅利, KANG Sungmin, 坂尻浩一, 渡辺順次

    繊維学会予稿集   67 ( 1 )   2012

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  • 電界紡糸とレーザーパターニングによる液晶エラストマー棒状マイクロ粒子の作製

    松本英俊, 中島慶大, 石毛亮平, 坪井一真, 戸木田雅利, 渡邊順次, 谷岡明彦

    高分子学会予稿集(CD-ROM)   60 ( 2 Disk1 )   2011

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  • Antiferroelectric Switching between Optically Isotropic and Birefringent B2 Phases of Bent-Shaped Molecules with High Tilt Angle of 45 degrees

    Seng Kue Lee, Sungmin Kang, Masatoshi Tokita, Juni Watanabe

    JAPANESE JOURNAL OF APPLIED PHYSICS   49 ( 8 )   080209   2010.8

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  • Flexible, Transparent Nanocomposite Film with a Large Clay Component and Ordered Structure Obtained by a Simple Solution-Casting Method

    Kazuhiro Shikinaka, Kazuto Aizawa, Nozomu Fujii, Yoshihito Osada, Masatoshi Tokita, Junji Watanabe, Kiyotaka Shigehara

    LANGMUIR   26 ( 15 )   12493 - 12495   2010.8

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  • Spontaneous Formation of Polar Liquid Crystal in Lyotropic Solution of Helical Poly(γ-Benzyl Glutamate)

    Chu-Chun Yen, Yoshiaki Taguchi, Sungmin Kang, Masatoshi Tokita, Junji Watanabe

    Mol. Cryst. Liq. Cryst.   516   91 - 98   2010.2

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    DOI： 10.1080/15421400903400712

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  • Unusual Swelling of HPC in Toluene Forming a Microspherical Domain Structure that Causes Christiansen Scattering Coloration

    Susumu Edo, Kento Okoshi, Sungmin Kang, Masatoshi Tokita, Tatsuo Kaneko, Junji Watanabe

    LANGMUIR   26 ( 3 )   1743 - 1746   2010.2

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  • Impregnation of Ni-P metal into polymer substrate via catalyzation in Sc-CO2 and electroless plating in Sc-CO2 emulsion

    Byung-Hoon Woo, Masato Sone, Akinobu Shibata, Chiemi Ishiyama, Susumu Edo, Masatoshi Tokita, Junji Watanabe, Yakichi Higo

    SURFACE & COATINGS TECHNOLOGY   204 ( 11 )   1785 - 1792   2010.2

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  • Electric-field-induced transition between ferro- and antiferroelectric ground states observed in the B7 phase of a bent-shaped molecule with alkylthio tails

    Seng Kue Lee, Xiaodong Li, Sungmin Kang, Masatoshi Tokita, Junji Watanabe

    JOURNAL OF MATERIALS CHEMISTRY   20 ( 18 )   3615 - 3618   2010

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  • Hyperpolarizability of an aromatic polyester

    Susumu Kawauchi, Masayuki Kaneko, Tatsuya Imase, Yoshiaki Taguchi, Yen Chu-Chun, Sungmin Kano, Masatoshi Tokita, Junji Watanabe

    Kobunshi Ronbunshu   67 ( 3 )   209 - 213   2010

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    Language：Japanese   Publisher：Society of Polymer Science  

    DOI： 10.1295/koron.67.209

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  • Unique Reflection Property Due to Bumpy Multilayer Structure in Elytra of Rhomborrhina unicolor

    Susumu Edo, Kento Okoshi, Sungmin Kang, Masatoshi Tokita, Junji Watanabe

    JAPANESE JOURNAL OF APPLIED PHYSICS   49 ( 4 )   047201   2010

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  • Formation of a homochiral antiferroelectric ground state in asymmetric bent-shaped molecules

    Seng Kue Lee, Sungmin Kang, Masatoshi Tokita, Junji Watanabe

    LIQUID CRYSTALS   37 ( 5 )   593 - 598   2010

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  • 電界紡糸法ナノファイバーにおける液晶高分子の構造形成

    中島慶大, 松本英俊, 坪井一真, 石毛亮平, 戸木田雅利, 渡邊順次, 谷岡明彦

    繊維学会予稿集   65 ( 3 )   2010

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  • Spontaneous Formation of Polar Liquid Crystal in Lyotropic Solution of Helical Poly(γ-Benzyl Glutamate)

    Chu-Chun Yen, Yoshiaki Taguchi, Sungmin Kang, Masatoshi Tokita, Junji Watanabe

    Mol. Cryst. Liq. Cryst.   516   91 - 98   2010

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  • Parallel-Layer Orientation and Its Instability in Side-Chain Polymer Smectic Liquid Crystals Under Shear Flow

    Masatoshi Tokita, Go Sugiyama, Satoshi Masuyama, Toshinari Ishii, Sungmin Kang, Junji Watanabe

    MACROMOLECULES   42 ( 21 )   8406 - 8410   2009.11

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  • Structural characteristics of the B6 phase for a bent-core molecular system observed through the B1-B6 transition

    Sungmin Kang, Seng Kue Lee, Masatoshi Tokita, Junji Watanabe

    PHYSICAL REVIEW E   80 ( 4 )   042703   2009.10

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  • Control of Phase Separated Nano-Structure in Block Copolymers by Liquid Crystalline Fields

    Masatoshi Tokita, Junji Watanabe

    SEN-I GAKKAISHI   65 ( 8 )   P277 - P281   2009.8

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  • Mesomorphic Properties in Asymmetric Bent-shaped Molecules with Different Linkage Moieties as Side Wings

    Sungmin Kang, Seng-Kue Lee, Xiadong Li, Masatoshi Tokita, Junji Watanabe

    CHEMISTRY LETTERS   38 ( 8 )   852 - 853   2009.8

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  • 液晶場を利用したブロック共重合体の相分離ナノ構造制御

    戸木田雅利, 渡辺順次

    繊維学会誌（繊維と工業）   65 ( 8 )   P.277 - P.281   2009.8

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    DOI： 10.2115/fiber.65.P_277

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  • Double liquid crystalline side-chain type block copolymers for hierarchically ordered nanostructures: Synthesis and morphologies in the bulk and thin film

    Rina Maeda, Teruaki Hayakawa, Masatoshi Tokita, Ryohei Kikuchi, Jun Kouki, Masa-aki Kakimoto, Hiroaki Urushibata

    REACTIVE & FUNCTIONAL POLYMERS   69 ( 7 )   519 - 529   2009.7

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  • Effect of Alkylthio Tail on Phase Behaviors of Bent-shaped Molecules Based on Naphthalene Core

    Xiaodong Li, Seng Kue Lee, Sungmin Kang, Masatoshi Tokita, Susumu Kawauchi, Junji Watanabe

    CHEMISTRY LETTERS   38 ( 5 )   424 - 425   2009.5

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  • Entropically-Driven Formation of Smectic A1, A2, and A3 phases in Binary Mixtures of Rigid-Rod Helical Polysilanes with Different Molecular Weights

    Kento Okoshi, Akiko Suzuki, Masatoshi Tokita, Michiya Fujiki, Junji Watanabe

    MACROMOLECULES   42 ( 10 )   3443 - 3447   2009.5

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  • Difference in Steady Shear Flow Viscosity between Polar and Nonpolar Nematic Liquid Crystals in Aromatic Polyesters Derived from VECTRA

    Yoshiaki Taguchi, Chu-Chun Yen, Sungmin Kang, Masatoshi Tokita, Junji Watanabe

    MACROMOLECULES   42 ( 8 )   3179 - 3185   2009.4

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  • Regular Formation of Chain Folding in Smectic Phase of Main-Chain BB-3(2-Ph) Polymer Followed by Columnar Association of Phenyl Side Group in Propane Spacer

    Ryohei Ishige, Yu Naito, Sungmin Kang, Masatoshi Tokita, Junji Watanabe

    MACROMOLECULES   42 ( 7 )   2557 - 2562   2009.4

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  • Unusual Transformation of the Mechanically Induced Monodomain State to the Polydomain One in Polar Nematic Liquid Crystals of Aromatic Polyesters

    Yoshiaki Taguchi, Chu-Chun Yen, Sungmin Kang, Masatoshi Tokita, Junji Watanabe

    JOURNAL OF PHYSICAL CHEMISTRY B   113 ( 16 )   5341 - 5344   2009.4

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  • Atomic Force Microscope Observation of Nano-Ordered Undulation Structure Formed by Bent-Shaped Molecules

    Susumu Edo, Xiaodong Li, Masatoshi Tokita, Sungmin Kang, Junji Watanabe

    JAPANESE JOURNAL OF APPLIED PHYSICS   48 ( 3 )   030215-1-030215-3   2009.3

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  • Entropically driven smectic A and A2 phases occurring in binary mixtures of rigid-rod helical polysilanes with different molecular weights

    Kento Okoshi, Akiko Suzuki, Masatoshi Tokita, Michiya Fujiki, Junji Watanabe

    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   237   2009.3

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  • Unusual formation of smectic A structure in crosslinked monodomain elastomer of main-chain LC polyester with 3-methylpentane spacer

    Ryohei Ishige, Masatoshi Tokita, Yu Naito, Chun Ying Zhang, Junji Watanabe

    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   237   2009.3

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  • Prolate spheroid domains formed by 2 wt% amorphous segment in an asymmetric LC block copolymer/LC homopolymer mixture

    Masatoshi Tokita, Satoshi Masuyama, Mitsu-aki Adachi, Junji Watanabe

    ABSTRACTS OF PAPERS OF THE AMERICAN CHEMICAL SOCIETY   237   2009.3

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  • 電界紡糸法により作製した液晶高分子ナノファイバーの内部構造

    中島慶大, 石毛亮平, 坪井一真, 松本英俊, 戸木田雅利, 渡邊順次, 谷岡明彦

    高分子学会予稿集(CD-ROM)   58 ( 1 Disk1 )   2009

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  • 電界紡糸法により作製した液晶高分子ナノファイバーの内部構造

    中島慶大, 石毛良平, 坪井一真, 松本英俊, 戸木田雅利, 渡邊順次, 谷岡明彦

    繊維学会予稿集   64 ( 1 )   2009

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  • 電界紡糸法による液晶高分子ナノファイバーの構造

    中島慶大, 石毛亮平, 坪井一真, 松本英俊, 戸木田雅利, 渡邊順次, 谷岡明彦

    高分子と水に関する討論会講演要旨集   47th   2009

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  • Spontaneous deformation of main-chain liquid-crystalline elastomers composed of smectic polyesters

    Kazuyuki Hiraoka, Tohru Tashiro, Masatoshi Tokita, Junji Watanabe

    LIQUID CRYSTALS   36 ( 2 )   115 - 122   2009

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  • Synthesis of macrocyclised dimetric compounds and their liquid crystal transition behaviours

    Manabu Itoh, Masatoshi Tokita, Kaoru Adachi, Teruaki Hayakawa, Sungmin Kang, Yasuyuki Tezuka, Junji Watanabe

    LIQUID CRYSTALS   36 ( 12 )   1443 - 1450   2009

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  • Formation of banana phases in bent-shaped molecules with unusual bent angles as low as 60 degrees

    Seng Kue Lee, Xiaodong Li, Sungmin Kang, Masatoshi Tokita, Junji Watanabe

    JOURNAL OF MATERIALS CHEMISTRY   19 ( 26 )   4517 - 4522   2009

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  • Two-fold Helical Inversion in the Chiral SmC Phase of Optically Active Materials Derived from (R)-(+)-1-(1-Phenyl)ethylamine

    Masakane Muto, Hideyuki Suzuki, Seng Kue Lee, Sungmin Kang, Masatoshi Tokita, Junji Watanabe

    JOURNAL OF PHYSICAL CHEMISTRY B   112 ( 49 )   15521 - 15524   2008.12

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  • Anti-ferroelectric Banana Phase in a Bent-shaped Molecule with a Low Bend Angle of 60 degrees

    Seng Kue Lee, Lu Shi, Ryohei Ishige, Sungmin Kang, Masatoshi Tokita, Junji Watanabe

    CHEMISTRY LETTERS   37 ( 12 )   1230 - 1231   2008.12

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  • Double Ordered Layers within Microphase-separated Lamellar Structure of Double Liquid Crystalline Side-chain Type Block Copolymer

    Rina Maeda, Teruaki Hayakawa, Masatoshi Tokita, Masa-aki Kakimoto, Hiroaki Urushibata

    CHEMISTRY LETTERS   37 ( 11 )   1174 - 1175   2008.11

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  • Thermoreversible Contraction and Extension of Layer Spacing in Smectic Phase of Side Chain Liquid Crystal Poly(fumarate)s

    Tsuyoshi Michinobu, Nozomu Fujii, Masatoshi Tokita, Junji Watanabe, Kiyotaka Shigehara

    MACROMOLECULAR RAPID COMMUNICATIONS   29 ( 19 )   1593 - 1597   2008.10

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  • Side chain liquid crystal poly(fumarate)s rearing tolane-based mesogens

    Hiroshi Noguchi, Tsuyoshi Michinobu, Nozomu Fujii, Masahiro Funahashi, Masatoshi Tokita, Junji Watanabe, Kiyotaka Shigehara

    JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY   46 ( 15 )   5101 - 5114   2008.8

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  • Chiral correlation between low-birefringent phases with twist grain boundary-like helix and highly birefringent phases with layer chirality as elucidated from circular dichroism observations

    Seng Kue Lee, Lu Shi, Masatoshi Tokita, Junji Watanabe

    JOURNAL OF PHYSICAL CHEMISTRY B   112 ( 22 )   6762 - 6766   2008.6

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  • Phase diagram for solutions of alpha-helical poly(L-glutamate)s in m-cresol including isotropic, cholesteric, and columnar phases

    Chu-Chun Yen, Susumu Edo, Hideki Oka, Masatoshi Tokita, Junji Watanabe

    MACROMOLECULES   41 ( 10 )   3727 - 3733   2008.5

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  • Phase diagram for solutions of alpha-helical poly(L-glutamate)s in m-cresol including isotropic, cholesteric, and columnar phases

    Chu-Chun Yen, Susumu Edo, Hideki Oka, Masatoshi Tokita, Junji Watanabe

    MACROMOLECULES   41 ( 10 )   3727 - 3733   2008.5

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  • Polar nematic phase in lyotropic solutions of poly(gamma-benzyl glutamate) and its temperature instability as detected by SHG measurement

    Chu-Chun Yen, Yoshiaki Taguchi, Masatoshi Tokita, Junji Watanabe

    MACROMOLECULES   41 ( 8 )   2755 - 2758   2008.4

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  • Polar nematic phase in lyotropic solutions of poly(gamma-benzyl glutamate) and its temperature instability as detected by SHG measurement

    Chu-Chun Yen, Yoshiaki Taguchi, Masatoshi Tokita, Junji Watanabe

    MACROMOLECULES   41 ( 8 )   2755 - 2758   2008.4

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  • Unusual formation of smectic a structure in cross-linked monodomain elastomer of main-chain LC polyester with 3-methylpentane spacer

    Ryohei Ishige, Masatoshi Tokita, Yu Naito, Chun Ying Zhang, Junji Watanabe

    MACROMOLECULES   41 ( 7 )   2671 - 2676   2008.4

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  • Unexpected phase behaviors of poly(fumarate)s carrying tolane-based mesogenic side chains

    Tsuyoshi Michinobu, Hiroshi Noguchi, Nozomu Fujii, Masatoshi Tokita, Junji Watanabe, Kiyotaka Shigehara

    Chemistry Letters   37 ( 3 )   356 - 357   2008.3

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  • Unexpected phase Behaviors of poly(fumarate)s carrying tolane-based mesogenic side chains

    Tsuyoshi Michinobu, Hiroshi Noguchi, Nozomu Fujii, Masatoshi Tokita, Junji Watanabe, Kiyotaka Shigehara

    CHEMISTRY LETTERS   37 ( 3 )   356 - 357   2008.3

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  • Sequential palladium-catalyzed coupling reactions on solid-phase

    Takayuki Doi, Hitoshi Inoue, Masatoshi Tokita, Junji Watanabe, Takashi Takahashi

    JOURNAL OF COMBINATORIAL CHEMISTRY   10 ( 1 )   135 - 141   2008.1

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  • Thermoreversible contraction and extension of layer spacing in smectic phase of side chain liquid crystal poly(fumarate)s

    Michinobu, T., Fujii, N., Tokita, M., Watanabe, J., Shigehara, K.

    Macromolecular Rapid Communications   29 ( 19 )   1593 - 1597   2008

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  • Effect of molecular structure on smectic phase structures in two homologues series of bent-shaped molecules with asymmetric central naphthalene core

    Seng Kue Lee, Masatoshi Tokita, Hideo Takezoe, Junji Watanabe

    Ferroelectrics   365 ( 1 )   1 - 11   2008

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  • Double ordered layers within mierophase-separated lamellar structure of double liquid crystalline side-chain type block copolymer

    Rina Maeda, Teruaki Hayakawa, Masatoshi Tokita, Masa-Aki Kakimoto, Hiroaki Urushibata

    Chemistry Letters   37 ( 11 )   1174 - 1175   2008

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  • 両成分側鎖に異なる液晶基を有するジブロック共重合体の合成と階層構造

    前田利菜, 早川晃鏡, 戸木田雅利, 柿本雅明, 漆畑廣明, 中村一希

    繊維学会予稿集   63 ( 1/2 )   2008

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  • 側鎖に異なる液晶基を有するジブロック共重合体の合成と自己組織化構造

    前田利菜, 早川晃鏡, 戸木田雅利, 柿本雅明, 漆畑廣明, 中村一希

    高分子学会予稿集(CD-ROM)   57 ( 1 Disk1 )   2008

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  • Temperature-induced reversible distortion along director axis observed for monodomain nematic elastomer of cross-linked main-chain polyester

    Reports of the Eno Science Foundation   3   197 - 203   2008

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  • Effect of molecular structure on smectic phase structures in two homologues series of bent-shaped molecules with asymmetric central naphthalene core

    Seng Kue Lee, Masatoshi Tokita, Hideo Takezoe, Junji Watanabe

    FERROELECTRICS   365   159 - +   2008

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  • Chiral correlation between low birefringent phases with TGB-like helix and highly birefringent phases with layer chirality as elucidated from CD observations

    Seng Kue Lee, Lu Shi, Masatoshi Tokita, Junji Watanabe

    J. Phys. Chem. B   Vol. 112 ( No. 22 )   6762 - 6766   2008

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    DOI： 10.1021/jp8002849

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  • Ferroelectric and antiferroelectric behavior in chiral bent-shaped molecules with an asymmetric central naphthalene core

    Kue Lee Seng, Masatoshi Tokita, Yoshio Shimbo, Kyung-Tae Kang, Hideo Takezoe, Junji Watanabe

    Bulletin of the Korean Chemical Society   28 ( 12 )   2241 - 2247   2007.12

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    DOI： 10.5012/bkcs.2007.28.12.2241

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  • Ferroelectric and antiferroelectric behavior in chiral bent-shaped molecules with an asymmetric central naphthalene core

    Seng Kue Lee, Masatoshi Tokita, Yoshio Shimbo, Kyung-Tae Kang, Hideo Takezoe, Junji Watanabe

    BULLETIN OF THE KOREAN CHEMICAL SOCIETY   28 ( 12 )   2241 - 2247   2007.12

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  • New optically active imine dopants derived from (R)-(+)-1-(1-naphthyl)ethylamine: Relation between their large helical twisting power and internal rotation potential profiles

    Kaoru Fukuda, Hideyuki Suzuki, Masatoshi Tokita, Junji Watanabe, Susumu Kawauchi

    JOURNAL OF MOLECULAR STRUCTURE-THEOCHEM   821 ( 1-3 )   95 - 100   2007.11

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  • Structure of a B-6-like phase formed from bent-core liquid crystals determined by microbeam x-ray diffraction

    Sungmin Kang, Masatoshi Tokita, Yoichi Takanishi, Hideo Takezoe, Junji Watanabe

    PHYSICAL REVIEW E   76 ( 4 )   042701   2007.10

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  • Characteristic shear-flow orientation in LC block copolymer resulting from compromise between orientations of microcylinder and LC mesogen

    Masatoshi Tokita, Mitsu-aki Adachi, Satoshi Masuyama, Fumihiro Takazawa, Junji Watanabe

    MACROMOLECULES   40 ( 20 )   7276 - 7282   2007.10

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  • 24pRA-1 Magnetic Potassium Cluster in the Nanographite Porous Network

    Takai K., Eto S., Inaguma M., Enoki T., Tokita M., Watanabe J., Ogata H.

    Meeting abstracts of the Physical Society of Japan   62 ( 2 )   899 - 899   2007.8

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  • Relationship between chemical structure and helical twisting power in optically active imine dopants derived from (R)-(+)-1-(1-naphthyl)ethylamine

    Kaoru Fukuda, Hideyuki Suzuki, Jin Ni, Masatoshi Tokita, Junji Watanabe

    JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS   46 ( 8A )   5208 - 5212   2007.8

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  • Transmission electron microscope observation by surface replica method for layer undulation in solid X-1 phase of banana molecule

    Sungmin Kang, Jun Koki, Masatoshi Tokita, Junji Watanabe

    JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS   46 ( 6A )   3518 - 3520   2007.6

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  • Unusual nematic liquid crystal with polar C-s symmetry formed from aromatic polyesters with head-tail character

    Masao Koike, Chu-Chun Yen, Yuqing Liu, Hitoshi Tsuchiya, Masatoshi Tokita, Susumu Kawauchi, Hideo Takezoe, Junji Watanabe

    MACROMOLECULES   40 ( 7 )   2524 - 2531   2007.4

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  • Unusual nematic liquid crystal with polar Cs symmetry formed from aromatic polyesters with head-tail character

    Masao Koike, Chu-Chun Yen, Liu Yuqing, Hitoshi Tsuchiya, Masatoshi Tokita, Susumu Kawauchi, Hideo Takezoe, Junji Watanabe

    Macromolecules   40 ( 7 )   2524 - 2531   2007.3

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    DOI： 10.1021/ma0626214

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  • Magnetic potassium clusters in a nanographite host system

    Kazuyuki Takai, Soichiro Eto, Masayasu Inaguma, Toshiaki Enoki, Hironori Ogata, Masatoshi Tokita, Junji Watanabe

    PHYSICAL REVIEW LETTERS   98 ( 1 )   017203-1-4   2007.1

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  • Collective fluctuation in chiral smectic phases of main-chain liquid crystalline polymers

    Hiraoka, K., Nose, T., Uematsu, Y., Tokita, M., Watanabe, J.

    Liquid Crystals   34 ( 3 )   305 - 310   2007

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  • Interesting Problems in Polymer Science Produced Both by Liquid Crystallinity and by Polymeric Properties

    TOKITA Masatoshi

    Kobunshi   56 ( 1 )   41 - 41   2007

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    Language：Japanese   Publisher：The Society of Polymer Science, Japan  

    DOI： 10.1295/kobunshi.56.41

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  • 昇降温で一方向に大きく可逆に伸縮する主鎖型高分子ネマチック液晶エラストマー（平成１８年度繊維学会研究助成成果報告）

    戸木田雅利

    繊維学会誌   63 ( 4 )   P.109 - P.110   2007

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    Language：Japanese   Publisher：The Society of Fiber Science and Technology, Japan  

    DOI： 10.2115/fiber.63.P_109

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  • Mesomorphic behaviour in bent-shaped molecules with side wings at different positions of a central naphthalene core

    Seng Kue Lee, Yu Naito, Lu Shi, Masatoshi Tokita, Hideo Takezoe, Junji Watanabe

    LIQUID CRYSTALS   34 ( 8 )   935 - 943   2007

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  • Thermally Reversible Distortion Observed for Monodomain Nematic Elastomer of Cross-Linked Main-Chain Polyester

    M. Tokita, H. Tagawa, R. Ishige, K. Osada, J. Watanabe

    Mol. Cryst. Liq. Cryst   465   193 - 202   2007

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  • New optically active imine dopants derived from (R)-(+)-1-(1-naphthyl)ethylamine

    Kaoru Fukuda, Hideyuki Suzuki, Masatoshi Tokita, Junji Watanabe, Susumu Kawauchi

    Vol. 821 ( No. 1-3 )   95 - 100   2007

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    The imine based arom. dopants derived from (R)-1-phenylethylamine show the largest helical twisting power (HTP) among the known chiral compds. having chiral centers doped in nematic liq. crystals. In order to clarify the relationship between mol. structure and HTP, conformational search for imine based model mols. was carried out. The computational results indicated that the model compd., (R)-N-benzylidene-1-phenylethanamine (M1) is characterized by having one energy min. conformation. In (R)-N-benzylidene-1-(naphthalen-1-yl)ethanamine (M2) where benzene ring in M1 is replaced by naphthalene ring, the conformation was found to exhibit small no. of local min. and relatively high rotational barrier around the single bond between chiral center and its arom. end group. Exptl. results showed that HTP of M2 (13 m-1) is fairly higher than that of M1 (3 m-1). Further, several dopants derived from R-(+)-1-(1-naphthyl)ethylamine also showed the markedly high HTP of around 60 m-1 which is larger by 20 m-1 than those of the corresponding R-(+)-1-phenylethylamine homologues. It was thus concluded that the chiral center neighboring to the mesogenic part is the most important factor for high HTP of the imine based dopants.

    DOI： 10.1016/j.theochem.2007.06.035

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  • Mesomorphic behaviour in bent-shaped molecules with side wings at different positions of central naphthalene core

    Seng Kue Lee, Yu Naito, Lu Shi, Masatoshi Tokita, Hideo Takezoe, Junji Watanabe

    Liq.Cryst   Vol. 34 ( No. 8 )   935 - 943   2007

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    DOI： 10.1080/02678290701541538

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  • Thermally Reversible Distortion Observed for Monodomain Nematic Elastomer of Cross-Linked Main-Chain Polyester

    M. Tokita, H. Tagawa, R. Ishige, K. Osada, J. Watanabe

    Mol. Cryst. Liq. Cryst   465   193 - 202   2007

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  • Magnetic orientation of microcylinders in liquid crystalline diblock copolymer and clarification of its orientation mechanism

    Mitsu-aki Adachi, Fumihiro Takazawa, Naoki Tomikawa, Masatoshi Tokita, Junji Watanabe

    POLYMER JOURNAL   39 ( 2 )   155 - 162   2007

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  • Mesomorphic behaviour in bent-shaped molecules with side wings at different positions of central naphthalene core

    Seng Kue Lee, Yu Naito, Lu Shi, Masatoshi Tokita, Hideo Takezoe, Junji Watanabe

    Liq.Cryst   34 ( 8 )   935 - 943   2007

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  • Chirality transfer between weakly birefringent and electric-field-induced highly birefringent b2 phases in a bent-core mesogen

    Lee, SK, Shi, L., Tokita, M., Takezoe, H., Watanabe, J.

    Journal of Physical Chemistry B   111 ( 30 )   8698 - 8701   2007

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  • Shear flow orientation of cylindrical microdomain in liquid crystalline diblock copolymer and its potentiality as anchoring substrate for nematic mesogens

    Masatoshi Tokita, Mitsu-aki Adachi, Fumihiro Takazawa, Junji Watanabe

    JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS   45 ( 12 )   9152 - 9156   2006.12

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  • Self-assembled lamellar nanostructures of wholly aromatic rod-rod-type block molecules

    Teruaki Hayakawa, Raita Goseki, Masa-aki Kakimoto, Masatoshi Tokita, Junji Watanabe, Yonngui Liao, Shin Horiuchi

    ORGANIC LETTERS   8 ( 24 )   5453 - 5456   2006.11

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  • Synthesis and characterization of self-assemhling amphiphilic aromatic amide dendrons

    Teruaki Hayakawa, Shigemasa Nakasugi, Masa-Aki Kakimoto, Masatoshi Tokita, Junh Watanabe

    HIGH PERFORMANCE POLYMERS   18 ( 5 )   761 - 775   2006.10

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  • Synthesis and Characterization of Self-Assembling Amphiphilic Aromatic Amide Dendrons

    T. Hayakawa, S. Nakasugi, A.-a. Kakimoto, M. Tokita, J. Watanabe

    High Performance Polymers   18 ( 5 )   761 - 775   2006.10

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    DOI： 10.1177/0954008306068253

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  • Frustrated smectic phase appearing as transitional state between single-layer and antiferroelectric bilayer smectic phases in binary mixtures of dimeric compounds

    T Izumi, Y Naitou, M Tokita, J Watanabe

    JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS   45 ( 6A )   4991 - 4993   2006.6

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  • Chain folded lamellar structure in main-chain polymer smectic liquid crystal revealed by shear flow orientations

    Masatoshi Tokita, Junji Watanabe

    SEN-I GAKKAISHI   62 ( 6 )   P160 - P164   2006.6

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  • Characteristics of Glass Transition of Liquid Crystalline Polymers

    TOKITA Masatoshi

    55 ( 1 )   88 - 90   2006.5

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  • Low-birefringent, chiral banana phase below calamitic nematic and/or smectic C phases in oxadiazole derivatives

    S Kang, Y Saito, N Watanabe, M Tokita, Y Takanishi, H Takezoe, J Watanabe

    JOURNAL OF PHYSICAL CHEMISTRY B   110 ( 11 )   5205 - 5214   2006.3

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  • Temperature-induced reversible distortion along director axis observed for monodomain nematic elastomer of cross-linked main-chain polyester

    M Tokita, H Tagawa, H Niwano, K Sada, J Watanabe

    JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS BRIEF COMMUNICATIONS & REVIEW PAPERS   45 ( 3A )   1729 - 1733   2006.3

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  • Polarized light scattering and synchrotron radiation wide-angle X-ray diffraction studies on smectic liquid crystal formation of main-chain polyester

    M Tokita, KW Kim, SM Kang, J Watanabe

    MACROMOLECULES   39 ( 6 )   2021 - 2023   2006.3

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  • Spontaneous organization of helical polypeptide molecules into polar packing structure

    CC Yen, M Tokita, B Park, H Takezoe, J Watanabe

    MACROMOLECULES   39 ( 4 )   1313 - 1315   2006.2

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  • Distinct layered structure with density modulation in solid phase formed from B-2 phase of banana molecules

    SM Kang, M Tokita, K Ogino, T Doi, T Takahashi, H Takezoe, J Watanabe

    PHYSICAL REVIEW E   73 ( 1 )   011701   2006.1

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  • Several interesting fields exploited through understanding of polymeric effects on liquid crystals of main-chain polyesters

    Masatoshi Tokita, Junji Watanabe

    Polymer Journal   38 ( 7 )   611 - 638   2006

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    Language：English   Publishing type：Book review, literature introduction, etc.  

    DOI： 10.1295/polymj.PJ2006008

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  • せん断流動配向挙動から見えてきた主鎖型高分子スメクチック液晶の折りたたみ鎖ラメラ構造

    戸木田雅利, 渡辺順次

    繊維学会誌   62 ( 6 )   P.160 - P.164   2006

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    DOI： 10.2115/fiber.62.P_160

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  • Distinct Behavior of Main-Chain Polymers in Liquid Crystalline Field

    TOKITA Masatoshi, WATANABE Junji

    Kobunshi   55 ( 8 )   595 - 598   2006

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    DOI： 10.1295/kobunshi.55.595

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  • Distinct Behavior of Main-Chain Polymers in Liqd Crystalline Field

    Masatoshi Tokita, Junji Watanabe

    Kobunshi   55 ( 8 )   595 - 598   2006

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  • Several interesting fields exploited through understanding of polymeric effects on liquid crystals of main-chain polyesters

    Masatoshi Tokita, Junji Watanabe

    POLYMER JOURNAL   38 ( 7 )   611 - 638   2006

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  • 座談会～30年後の繊維～

    伊香賀敏文, 大松沢明宏, 鬘谷要, 神山三枝, 澤井大輔, 戸木田雅利, 仲井朝美, 松梨久仁子, 山口新司

    繊維学会誌   62 ( 1 )   29 - 34   2006

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    DOI： 10.2115/fiber.62.P_29

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  • Distinct layered structure with density modulation in solid phase formed from B2 phase of banana molecules

    Kang, S., Tokita, M., Ogino, K., Doi, T., Takahashi, T., Takezoe, H., Watanabe, J.

    Physical Review E - Statistical, Nonlinear, and Soft Matter Physics   73 ( 1 )   011701   2006

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  • Aromatic polyesters with flexible side chains. 10. Studies on biaxiality in nematic liquid crystal of BC-n polyester

    Kai Fu, Masato Sone, Masatoshi Tokita, Junji Watanabe

    POLYMER JOURNAL   38 ( 5 )   442 - 446   2006

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  • Development of co-continuous structure in liquid crystalline polyester

    Kenta Suzuki, Hiromu Saito, Masatoshi Tokita, Junji Watanabe

    Polymer   46 ( 19 )   8313 - 8320   2005.9

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  • Two distinct types of orientation process observed in uniaxially elongated smectic LC melt

    K Osada, M Koike, H Tagawa, S Hunaoka, M Tokita, J Watanabe

    MACROMOLECULES   38 ( 17 )   7337 - 7342   2005.8

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  • Internal rotations of aromatic polyamides: a density functional theory study

    J Nishikawa, T Imase, M Koike, K Fukuda, M Tokita, J Watanabe, S Kawauchi

    JOURNAL OF MOLECULAR STRUCTURE   741 ( 1-3 )   221 - 228   2005.5

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  • Synthesis of new type of dendritic molecule and its columnar self-assembly having a potential as molecular cavity

    K Fu, S Nakasugi, Y Takagawara, L Li, T Hayakawa, M Jikei, M Tokita, M Kakimoto, J Watanabe

    JOURNAL OF MOLECULAR STRUCTURE   739 ( 1-3 )   125 - 130   2005.4

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  • Molecular weight dependence of phase behavior in side-chain liquid crystalline polymer which exhibits reentrant nematic phase

    N Tomikawa, T Itoh, Y Okazaki, M Adachi, M Tokita, J Watanabe

    JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS   44 ( 12-15 )   L381 - L384   2005

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  • Characteristics of Smectic Liquid Crystal Glass and Isotropic Liquid Glass Formed by Thermotropic Main-Chain Liquid Crystal Polyester

    Masatoshi Tokita, Junji Watanabe

    Novel Strategies for Fundamental Innovation in Polymer Science, Research Signpost, India   75 - 96   2005

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  • Characteristics of smectic liquid crystal glass and isotropic liquid glass formed by thermotropic main-chain liquid crystal polyesters

    Masatoshi Tokita

    Kobunshi Ronbunshu   62 ( 8 )   352 - 361   2005

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    Language：Japanese   Publisher：Society of Polymer Science  

    DOI： 10.1295/koron.62.352

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  • Characteristics of Smectic Liquid Crystal Glass and Isotropic Liquid Glass Formed by Thermotropic Main-Chain Liquid Crystal Polyester

    Masatoshi Tokita, Junji Watanabe

    Novel Strategies for Fundamental Innovation in Polymer Science, Research Signpost, India   75 - 96   2005

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  • Orientation of microphase-segregated cylinders in liquid crystalline diblock copolymer by magnetic field

    N Tomikawa, ZB Lu, T Itoh, CT Imrie, M Adachi, M Tokita, J Watanabe

    JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS & EXPRESS LETTERS   44 ( 20-23 )   L711 - L714   2005

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  • Study on smectic liquid crystal glass and isotropic liquid glass formed by thermotropic main-chain liquid crystal polyester

    M Tokita, S Funaoka, J Watanabe

    MACROMOLECULES   37 ( 26 )   9916 - 9921   2004.12

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  • 若手交流委員会について

    戸木田雅利

    繊維学会誌   60 ( 6 )   2004.6

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  • Thermotropic liquid crystals of main-chain polyesters having a mesogenic 4,4'-biphenyldicarboxylate unit, 14a - Anisotropic micro-Brownian motions of polymer in smectic CA phase

    K Osada, M Koike, H Tagawa, M Tokita, J Watanabe

    MACROMOLECULAR CHEMISTRY AND PHYSICS   205 ( 8 )   1051 - 1057   2004.5

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  • Parallel and perpendicular orientations observed in shear aligned S-CA liquid crystal of main-chain polyester

    M Tokita, K Tokunaga, S Funaoka, K Osada, J Watanabe

    MACROMOLECULES   37 ( 7 )   2527 - 2531   2004.4

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  • First observation of a smectic A-cholesteric phase transition in a thermotropic liquid crystal consisting of a rigid-rod helical polysilane

    K Okoshi, A Saxena, M Naito, G Suzaki, M Tokita, J Watanabe, M Fujiki

    LIQUID CRYSTALS   31 ( 2 )   279 - 283   2004.2

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  • Polar Packing Structures of Polypeptides Having αR-Helical and ωL-Helical Conformations as Studied by X-ray Diffraction and Second-Harmonic Generation

    Chu-Chun Yen, Fumito Araoka, Masatoshi Tokita Susumu, Kawauchi Byoungchoo, Park Hideo, Takezoe Junji Watanabe

    Jpn. J. Appl. Phys.   43   7026 - 7031   2004

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  • Solid-state C-13 NMR analysis of the crystalline-noncrystalline structure and chain conformation of thermotropic liquid crystalline polyester

    M Murakami, H Ishida, H Kaji, F Horii, M Tokita, J Watanabe

    POLYMER JOURNAL   36 ( 10 )   830 - 840   2004

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  • Small-angle X-ray analysis of smectic a cholesteric liquid crystal phase transition in rigid-rod helical polysilane

    K Okoshi, A Saxena, M Fujiki, G Suzaki, J Watanabe, M Tokita

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   419   57 - 68   2004

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  • Shear flow orientation and folded-chain laminar structures of main chain-type polymeric smectic liquid crystals

    Masatoshi Tokita, Junji Watanabe

    Kobunshi Kako (in Japanese)   53 ( 4 )   152 - 517   2004

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  • Polar Packing Structures of Polypeptides Having αR-Helical and ωL-Helical Conformations as Studied by X-ray Diffraction and Second-Harmonic Generation

    Chu-Chun Yen, Fumito Araoka, Masatoshi Tokita Susumu, Kawauchi Byoungchoo, Park Hideo, Takezoe Junji Watanabe

    Jpn. J. Appl. Phys.   43   7026 - 7031   2004

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  • 主鎖型高分子スメクチック液晶のせん断流動配向と折りたたみ鎖ラメラ構造

    戸木田雅利, 渡辺順次

    高分子加工   53 ( 4 )   152 - 517   2004

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  • Well-defined phase sequence including cholesteric, smectic A, and columnar phases observed in a thermotropic LC system of simple rigid-rod helical polysilane

    Kento Okoshi, Hiroyuki Kamee, Goro Suzaki, Masatoshi Tokita, Michiya Fujiki, Junji Watanabe

    Macromolecules   35 ( 12 )   4556 - 4559   2002.6

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    Language：English   Publishing type：Rapid communication, short report, research note, etc. (scientific journal)  

    DOI： 10.1021/ma012056z

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  • Smectic liquid crystal observed in thermotropic system of rigid-rod poly(gamma-octadecyl L-glutamate)

    K Okosh, N San, G Suzaki, M Tokita, J Magos, J Watanabe

    JAPANESE JOURNAL OF APPLIED PHYSICS PART 2-LETTERS   41 ( 6B )   L720 - L722   2002.6

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  • Well-defined phase sequence including cholesteric, smectic A, and columnar phases observed in a thermotropic LC system of simple rigid-rod helical polysilane

    K Okoshi, H Kamee, G Suzaki, M Tokita, M Fujiki, J Watanabe

    MACROMOLECULES   35 ( 12 )   4556 - 4559   2002.6

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  • Rigid-rod polyesters with flexible side chains IX. Phase behavior including nematic, layered, and hexagonal columnar phases in poly(p-biphenylene terephthalate) with alkoxy side chains

    K Fu, N Sekine, M Sone, M Tokita, J Watanabe

    POLYMER JOURNAL   34 ( 4 )   291 - 297   2002

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  • Transition phenomenon in salt-doped organic electroluminescent devices at high bias voltage

    Y Sakuratani, M Asai, H Yamamoto, M Tokita, T Watanabe, S Miyata

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS   378   157 - 166   2002

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  • Enhanced electron injection and electroluminescence in poly(N-vinyl carbazole) film doped with ammonium salt

    Y Sakuratani, M Asai, M Tokita, S Miyata

    SYNTHETIC METALS   123 ( 2 )   207 - 210   2001.9

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  • 液晶性ポリエステルの結晶‐非晶構造およびスペーサーのコンホメーションに関する固体13CNMR解析

    MURAKAMI MIWA, ISHIDA HIROYUKI, HORII FUMITAKA, TOKITA MASATOSHI, WATANABE JUNJI

    高分子学会予稿集   50 ( 3 )   517   2001.5

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  • Side-Chain LC Block Copolymers with Well Defined Structures Prepared by Living Anionic Polymerization. 5. Microphase Morphlogy in Mixtures of LC-Coil Block Copolymer/Coil Homopolymer

    Masatoshi Tokita

    Polym. J.   33 ( 10 )   783 - 791   2001

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  • Liquid Crystalline Polymers -Several Interesting Fields Exploited from Understanding of Polymeric Effect on Smectic Liquid Crystal

    Masatoshi Tokita, Kensuke Osada, Junji Watanabe

    Reports on Progress in Polymer Physics in Japan   43   193 - 218   2001

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  • Side-Chain LC Block Copolymers with Well Defined Structures Prepared by Living Anionic Polymerization. 5. Microphase Morphlogy in Mixtures of LC-Coil Block Copolymer/Coil Homopolymer

    Masatoshi Tokita

    Polym. J.   33 ( 10 )   783 - 791   2001

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  • Characterization for melt-spun fiber of fluorocarbon polymer - 1. Copolymer of tetrafluoroethylene and hexafluoropropylene

    T Uno, Y Wakayama, M Tokita, S Miyata, H Shirai

    SEN-I GAKKAISHI   56 ( 12 )   569 - 573   2000.12

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  • Thermotropic liquid crystals of main-chain polyesters having a mesogenic 4,4 '-biphenyldicarboxylate unit. 13. Characteristic deformation of smectic layer structure induced by elongation of uniaxially oriented fiber composed of smectic CA glass

    K Osada, H Niwano, M Tokita, S Kawauchi, J Watanabe

    MACROMOLECULES   33 ( 20 )   7420 - 7425   2000.10

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  • Aromatic polyesters with flexible side chains. 8. Studies on long periodical structure observed in layered crystalline phase

    K Fu, T Nematsu, M Sone, T Itoh, T Hayakawa, M Ueda, M Tokita, J Watanabe

    MACROMOLECULES   33 ( 22 )   8367 - 8370   2000.10

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  • The full-width at half-maximum of emission narrowing in electroluminescent device

    ZJ Chen, JS Yu, M Tokita, S Miyata

    JOURNAL OF PHYSICS D-APPLIED PHYSICS   33 ( 14 )   1643 - 1646   2000.7

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  • 高分子の結晶化初期モデルとしての主鎖型液晶性ポリエステルの構造形成

    山下亮司, 山下亮司, 西田幸次, 金谷利治, 梶慶輔, 渡辺順次, 戸木田雅利, 長田健介

    第55回繊維学会年次大会（繊維学会） ,日本（京都）   2000.6

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  • Dielectric relaxation and molecular motion in the chiral main-chain liquid crystalline copolyester, BB-4*(2-Me)/BB-6

    T Furukawa, O Uchinokura, Y Takahashi, M Tokita, K Osada, J Watanabe

    POLYMER JOURNAL   32 ( 2 )   122 - 126   2000

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  • Thermotropic Liquid Crystals of Polyesters Having a Mesogenic p,p'-Bibenzoate Unit. 13. Characteristic Deformation of Smectic Layer Structure Induced by Elongation of Uniaxially Oriented Fiber Composed of Smectic CA Glass

    Masatoshi Tokita, Kensuke, Osada Junji Watanabe

    Macromolecules   33 ( 20 )   7420 - 7425   2000

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  • Liquid crystalline polymers - Several interesting fields exploited from understanding of polymeric effect on smectic liquid crystal

    Tokita, M., Osada, K., Watanabe, J.

    Reports on Progress in Polymer Physics in Japan   43   193 - 218   2000

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  • Thermotropic Liquid Crystals of Polyester Having a Mesogenic 4,4'-Biphenyldicarboxylate Unit. 13. Smectic Layer Deformation Induced by Elongation of Uniaxially Oriented Fiber Composed of Smectic CA Liquid Crystalline Glass

    K. Osada, H. Niwano, M. Tokita, S. Kawauchi, J. Watanabe

    Macromolecules   33 ( 20 )   7420 - 7425   2000

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  • A novel blue light emitting diode using tris(2,3-methyl-8-hydroxyquinoline) aluminum(III) as emitter

    JS Yu, ZJ Chen, Y Sakuratani, H Suzuki, M Tokita, S Miyata

    JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS   38 ( 12A )   6762 - 6763   1999.12

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  • Chain folding of main-chain polyesters in the smectic a and CA phases with a liquid-like association of biphenyl mesogens within a layer

    M Tokita, S Miyata, K Osada, J Watanabe

    SEN-I GAKKAISHI   55 ( 11 )   502 - 510   1999.11

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    DOI： 10.2115/fiber.55.11_502

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  • 主鎖型液晶性ポリエステルの構造形成の初期過程

    山下亮司, 西田幸次, 金谷利治, 梶慶輔, 渡辺順次, 戸木田雅利, 長田健介

    高分子学会予稿集   48 ( 14 )   4013 - 4014   1999.9

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  • Fluorescence study on intermolecular complex formation between mesogenic biphenyl moieties of main-chain thermotropic liquid-crystalline polyesters with 7-18 methylene units

    HW Huang, K Horie, M Tokita, J Watanabe

    POLYMER   40 ( 11 )   3013 - 3023   1999.5

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  • 界面活性剤が形成する液晶の構造

    戸木田雅利, 宮田清蔵

    化学と教育   47 ( 4 )   242 - 244   1999

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    Language：Japanese   Publisher：公益社団法人 日本化学会  

    界面活性剤溶液の濃度を高くすると, ミセルが集合して液晶構造を形成する。類似の液晶構造は, 神経細胞をつつむミエリン鞘など生体内にも見られる。界面活性剤の液晶に関する研究は病理学者ウィルヒョウ(R. Virchow)によるミエリン鞘の液晶の観察(1854年)に端を発する。液晶の研究の始まりとされるコレステリック液晶の発見の34年も前のことである。本稿では, 界面活性剤の液晶でよく観察されるラメラ相, ヘキサゴナル相, ネマチック相, ゲル相の構造を紹介する。

    DOI： 10.20665/kakyoshi.47.4_242

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  • キラルネマチック液晶からの第2高調波発生

    廣瀬佳男, 戸木田雅利, 渡辺敏行, 宮田清蔵, 渡辺順次

    インテリジェント材料   9   18   1999

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  • Chain folding in the smectic phase of main-chain polyesters

    Masatoshi Tokita, Kensuke Osada, Hitoshi Tsuchiya, Junji Watanabe

    Kobunshi Ronbunshu   56 ( 4 )   184 - 194   1999

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    Language：Japanese   Publisher：Society of Polymer Science  

    DOI： 10.1295/koron.56.184

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  • Enhancement of Second Harmonic Generation Due to Selective Reflection of the Polypeptide Liquid Crystal

    Yoshio Hirose, Masatoshi Tokita, Toshiyuki Watanabe, Junji Watanabe, Seizo Miyata

    Nonlinear Optics   22   67 - 67   1999

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  • Enhancement of second harmonic generation due to selective reflection of the polypeptide liquid crystal

    Hirose, Yoshio, Tokita, Masatoshi, Watanabe, Toshiyuki, Watanabe, Junji, Miyata, Seizo

    Molecular Crystals and Liquid Crystals Science and Technology Section B: Nonlinear Optics   22 ( 1-4 )   67   1999

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  • Chain-folded lamellar structure in the smectic H phase of a main-chain polyester

    M Tokita, K Osada, M Yamada, J Watanabe

    MACROMOLECULES   31 ( 24 )   8590 - 8594   1998.12

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  • Fluorescence study on intermolecular complex formation between mesogenic 4,4 '-biphenyldicarboxylate moieties of thermotropic liquid-crystalline polyesters with 5 and 6 methylene units

    HW Huang, K Horie, M Tokita, J Watanabe

    MACROMOLECULAR CHEMISTRY AND PHYSICS   199 ( 9 )   1851 - 1858   1998.9

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  • Polar structure in polypeptide cholesteric liquid crystals evidenced from observation of second-harmonic generation due to the helicoidal cavity effect

    J Watanabe, Y Hirose, M Tokita, T Watanabe, S Miyata

    MACROMOLECULES   31 ( 17 )   5937 - 5939   1998.8

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  • Self-assembly of liquid-crystalline polyamide complexes through the formation of double hydrogen bonds between a 2,6-bis(amino)pyridine moiety and benzoic acids

    T Kato, O Ihata, S Ujiie, M Tokita, J Watanabe

    MACROMOLECULES   31 ( 11 )   3551 - 3555   1998.6

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  • High resolution C-13 NMR studies for crystalline and liquid crystalline phases of PB-18 polyester composed of 4,4 '-dihydroxybiphenyl and octadecanedioic acid

    M Tokita, M Sone, H Kurosu, Ando, I, J Watanabe

    JOURNAL OF MOLECULAR STRUCTURE   446 ( 3 )   215 - 221   1998.5

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  • Thermotropic liquid crystals of polyesters having a mesogenic p,p '-bibenzoate unit - X. Distinct orientation of molecules in a thin SmCA film stretched from isotropic melt, providing evidence for the biaxiallity of the SmCA phase

    M Tokita, K Osada, J Watanabe

    LIQUID CRYSTALS   24 ( 3 )   477 - 480   1998.3

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  • Smectic characteristics of main-chain polyesters as elucidated from a variation of layer thickness with carbon number of aliphatic spacer in a wide range, 5 to 20

    Y Nakata, M Hayashi, M Tokita, K Osada, J Watanabe

    HIGH PERFORMANCE POLYMERS   10 ( 1 )   121 - 130   1998.3

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  • Thermotropic Liquid Crystals of Polyesters Having a Mesogenic p,p'-Bibenzoate Unit. 11. Smectic Liquid Crystalline Glass

    Masatoshi Tokita, Kensuke, Osada Junji Watanabe

    Polym. J.   30 ( 7 )   589 - 595   1998

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  • Thermotropic Liquid Crystals of Polyesters Having a Mesogenic p,p'-Bibenzoate Unit. 12. Unusual Molecular Orientation in Fibers Drawn from Smectic Melt

    Masatoshi Tokita, Kensuke, Osada Junji Watanabe

    Polym. J.   30 ( 8 )   687 - 690   1998

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  • 界面に共蒸着層を導入した有機素子の発光特性

    戸木田雅利

    信学技報   7   77 - 77   1998

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  • Thermotropic Liquid Crystals of Polyesters Having a Mesogenic p,p'-Bibenzoate Unit. 11. Smectic Liquid Crystalline Glass

    Masatoshi Tokita, Kensuke, Osada Junji Watanabe

    Polym. J.   30 ( 7 )   589 - 595   1998

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  • Thermotropic Liquid Crystals of Polyesters Having a Mesogenic p,p'-Bibenzoate Unit. 12. Unusual Molecular Orientation in Fibers Drawn from Smectic Melt

    Masatoshi Tokita, Kensuke, Osada Junji Watanabe

    Polym. J.   30 ( 8 )   687 - 690   1998

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  • Liquid Crystalline Complexes Formed by Intermolecular Double Hydrogen Bonds between Polyamides Capable of Molecular Recognition and Carboxylic Acid Derivatives and Their Structures

    IHATA Osamu, KATO Takashi, UJIIE Seiji, TOKITA Masatoshi, WATANABE Junji

    Preprints of Symposium on Liquid Crystals   23   154 - 155   1997.9

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    Language：Japanese   Publisher：Japanese Liquid Crystal Society  

    We have prepared supramolecular liquid crystalline polyamides. These polyamides consist of 2,6-bis(amino)pyridyl group in their main chains, which formed molecular complexes with benzoie acids through double hydrogen bonds. They also formed liquid crystalline complexes with carboxyl-terminated azobenzene derivatives. The copolymeric complexes of a polyamide and two benzoic acid derivatives showed liquid-crystalline phases with wider temperature range.

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  • Dielectric behavior in chiral smectic phases of main-chain polyesters

    K Hiraoka, Y Sugano, K Monzen, Y Uematsu, M Tokita, J Watanabe, T Furukawa

    MOLECULAR CRYSTALS AND LIQUID CRYSTALS SCIENCE AND TECHNOLOGY SECTION A-MOLECULAR CRYSTALS AND LIQUID CRYSTALS   299   229 - 234   1997

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  • Thermotropic Liquid Crystals of Polyesters Having a Mesogenic p,p'-Bibenzoate Unit. 9. Chain folding in solid polyesters crystalliuzed from smectic A

    Masatoshi Tokita

    Liq. Cryst.   23 ( 3 )   453 - 456   1997

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  • Smectic liquid crystals in main-chain polymers

    J Watanabe, M Hayashi, Y Nakata, T Niori, M Tokita

    PROGRESS IN POLYMER SCIENCE   22 ( 5 )   1053 - 1087   1997

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    Language：English   Publishing type：Book review, literature introduction, etc.  

    DOI： 10.1016/S0079-6700(97)00016-6

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  • Thermotropic Liquid Crystals of Polyesters Having a Mesogenic p,p'-Bibenzoate Unit. 9. Chain folding in solid polyesters crystalliuzed from smectic A

    Masatoshi Tokita

    Liq. Cryst.   23 ( 3 )   453 - 456   1997

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  • Dielectric and Electoopical Responses of a Main-Chain Polymer Possessing Ferroelectric Liquid Crystalline Phase

    HIRAOKA Kazuyuki, SUGANO Yoshitaka, UEMATSU Yoshiko, TOKITA Masatoshi, WATANABE Junji

    Preprints of Symposium on Liquid Crystals   22   53 - 54   1996.9

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    We have investigated the SmA-SmC^* phase transition of main-chain polyesters having a mesogenic p,p'-bibenzoate unit by means of the dielectric and electrooptic measurements. In the SmC^* phase, a relaxation due to the Goldstone mode was observed at about 10 Hz. In addition, we recognized the other relaxation exhibiting softening behavior around the SmA-SmC^* phase transition temperature.

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  • Ferroelectric Properties and Molecular Motions in a main-chain Liquid Crystalline Polymer BB-6/BB-4^*(2-Me)

    FURUKAWA Takeo, UCHINOKURA Osamu, SERIZAWA Toyotaka, TAKAHASHI Yoshiyuki, TOKITA Masatoshi, WATANABE Junji

    Preprints of Symposium on Liquid Crystals   22   51 - 52   1996.9

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    Language：Japanese   Publisher：Japanese Liquid Crystal Society  

    The main-chain liquid crystalline polyester BB-6/BB-4^*(2-Me) has been examined by means of dielectric measurements both in linear and nonlinear regimes. In the S_c^* phase (50-140℃) the Goldstone mode relaxation and D-E hysteresis loop are observed which substantiates its ferroelectric nature These exist additional dielectric relaxation Which are attributed to segmental motion yields a T_g of 20℃. It is concluded that the Goldstone collective motion and the segmental mode motion coexist in the S_c^* phase of BB-6/BB-4^*(2-Me).

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  • Thermotropic liquid crystals of main-chain polyesters having a mesogenic 4,4'-biphenyldicarboxylate unit .8. X-ray analyses of structural change on S-A to S-C transition

    J Watanabe, M Hayashi, M Tokita

    REACTIVE & FUNCTIONAL POLYMERS   30 ( 1-3 )   191 - 196   1996.6

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  • Fluorescence study on intermolecular interactions between mesogenic biphenyl moieties of a thermotropic liquid-crystalline polyester (PB-10)

    HW Huang, K Horie, T Yamashita, S Machida, M Sone, M Tokita, J Watanabe, Y Maeda

    MACROMOLECULES   29 ( 10 )   3485 - 3490   1996.5

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  • Thermotropic liquid crystals of polyesters having a mesogenic p,p'-bibenzoate unit .7. Chain folding in the smectic phase of BB-6

    M Tokita, T Takahashi, M Hayashi, K Inomata, J Watanabe

    MACROMOLECULES   29 ( 4 )   1345 - 1348   1996.2

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  • Thermotropic Liquid Crystals of Main-Chain Polyesters Having a Mesogenic 4,4′-Biphenyldicarboxylate Unit. 6. Chiral Mesophases of Polyesters with a (S)-2-Methylbutylene Spacer

    Watanabe, J., Hayashi, M., Morita, A., Tokita, M.

    Macromolecules   28 ( 24 )   8073 - 8079   1995

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  • Thermotropic Liquid Crystals of Polyesters Having a Mesogenic p,p'-Bibenzoate Unit. 6. Chiral Mesophases of Polyesters with a (S)-2-Methylbutylene Spacer

    Masatoshi Tokita

    Macromolecules   28 ( 24 )   8073 - 8079   1995

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Presentations

  • Thermally Reversible Distortion Observed for Monodomain Nematic Elastomer of Cross-Linked Main-Chain Polyester

    The 11th International Workshop on Future Molecular Systems 2010  2010 

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  • Thermally Reversible Distortion Observed for Monodomain Nematic Elastomer of Cross-Linked Main-Chain Polyester

    Advanced Polymeric Materials and Technology Symposium (APMT 2010)  2010 

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  • Thermally Reversible Distortion Observed for Monodomain Nematic Elastomer of Cross-Linked Main-Chain Polyester

    The 11th International Workshop on Future Molecular Systems 2010  2010 

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  • 電界紡糸法とマイクロパターニングよる1次元ナノ構造体の作製

    第59回高分子学会年次大会  2010 

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  • 電界紡糸法とマイクロパターニングによる1次元ナノ構造体の作製

    ナノファイバー学会第1回年次大会  2010 

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  • 置換メチレン高分子液晶におけるスペーサー長の等長性と液晶相挙動

    第65回繊維学会年次大会  2010 

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  • 側鎖型液晶性高分子のスメクチック-ネマチック相転移に伴う配向状態変化

    第65回繊維学会年次大会  2010 

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  • 主鎖型液晶性高分子BB-5(1-Me)で観測される特異な二つの液晶化モード

    第65回繊維学会年次大会  2010 

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  • 一軸延伸で配向した主鎖型ネマチックエラストマーの昇降温による可逆な伸縮挙動

    第65回繊維学会年次大会  2010 

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  • PROLATE SPHEROID DOMAINS FORMED BY 2 WT% AMORPHOUS SEGMENT IN AN ASYMMETRIC LC BLOCK COPOLYMER / LC HOMOPOLYMER MIXTURE

    237th American Chemical Society National Meeting  2009 

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  • Thermally Reversible Distortion Observed for Monodomain Nematic Elastomer of Cross-Linked Main-Chain Polyester

    Advanced Polymeric Materials and Technology Symposium (APMT 2010)  2010 

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  • 主鎖型高分子スメクチック液晶のせん断流動配向

    第14回ポリマー材料フォーラム（高分子学会）  2005 

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  • Distinct smectic structure with density modulation along the layer observed in the highly ordered

    International Liquid Crystal Conference 2004  2004 

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  • Distinct smectic structure with density modulation along the layer observed in the highly ordered

    International Liquid Crystal Conference 2004  2004 

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  • 主鎖型液晶高分子を基盤としたモノドメイン・ネマチック液晶エラストマーの昇降温による可逆な伸縮挙動

    第14回ポリマー材料フォーラム  2005 

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  • 液晶―非晶ジブロック共重合体が形成するミクロ相分離構造の磁場配向

    第14回ポリマー材料フォーラム（高分子学会）  2005 

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  • 両親媒性芳香族アミドデンドロンの合成と自己集合構造の形成

    第54回高分子学会年次大会  2005 

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  • 主鎖型高分子スメクチック液晶のせん断流動配向

    第54回高分子学会年次大会  2005 

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  • 側鎖型液晶高分子が形成するネマチックおよびスメクチック液晶のせん断流動配向

    第54回高分子学会年次大会  2005 

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  • 主鎖型液晶高分子を基盤としたモノドメイン・ネマチック液晶エラストマーの昇降温による可逆な伸縮挙動

    第54回高分子学会年次大会  2005 

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  • 液晶―非晶ジブロック共重合体が形成するミクロ相分離構造の磁場配向

    第54回高分子学会年次大会  2005 

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  • 主鎖型高分子スメクチック液晶のせん断流動配向

    平成17年度繊維学会年次大会  2005 

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  • 主鎖型液晶高分子を基盤としたモノドメイン・ネマチック液晶エラストマーの昇降温による可逆な伸縮挙動

    平成17年度繊維学会年次大会  2005 

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  • 側鎖型液晶高分子が形成するネマチックおよびスメクチック液晶のせん断流動配向

    平成17年度繊維学会年次大会  2005 

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  • スルホン酸基を有する芳香族ディスク状色素分子の水中における棒状凝集体構造と液晶挙動

    第14回ポリマー材料フォーラム（高分子学会）  2005 

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  • 液晶-非晶ジブロック共重合体および液晶単独重合体とのブレンド系におけるミクロ相分離構造

    第55回高分子討論会  2006 

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  • 側鎖型高分子ネマチック液晶のせん断流動配向挙動

    第55回高分子討論会  2006 

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  • 側鎖末端にビフェニルメソゲンを有するポリグルタメートの構造

    第55回高分子討論会  2006 

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  • 主鎖にニトロ基を有する液晶性ポリフェニレン誘導体の合成と物性

    第55回高分子討論会  2006 

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  • 側鎖型液晶性高分子を一成分とするブロック共重合体のせん断流動配向とミクロドメイン界面の液晶アンカリング

    第37回繊維学会夏季セミナー  2006 

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  • スペーサー部に分岐を有する二量体が形成するU型スメク チック液晶

    2006年日本液晶学会討論会  2006 

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  • SmCAb－Crblue相転移におけるキラル保存

    2006年日本液晶学会討論会  2006 

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  • 主鎖型液晶高分子を基盤としたモノドメイン・ネマチック液晶エラストマーの昇降温による可逆な伸縮挙動

    日本液晶学会ソフトマターフォーラム第3回講演会  2006 

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  • 芳香族ポリエステルが示す極性ネマチック液晶構造

    第54回高分子学会年次大会  2005 

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  • 全芳香族エーテルスルホン-b-エーテルケトンブロックオリゴマーの合成と構造解析

    第55回高分子討論会  2006 

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  • 芳香族溶媒中におけるヒドロキシプロピルセルロースフィルムの異方的な膨潤挙動と内部に見られる相分離構造

    第55回高分子討論会  2006 

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  • 主鎖型高分子のモノドメイン･スメクチック液晶を光架橋したエラストマーの可逆な伸縮挙動

    高分子討論会  2007 

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  • Thermally Reversible Distortion Observed for Monodomain Nematic Elastomer of Cross-linked Main-Chain Polyester

    2007 International Symposium on Chemical Engineering: AOTULE  2007 

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  • 高分子液晶のガラス転移挙動の特徴

    第55回高分子学会年次大会  2006 

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  • 液晶-非晶ジブロック共重合体の非晶シリンダー状ミクロドメインにアンカリングされた液晶成分の配向

    第55回高分子学会年次大会  2006 

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  • 柔軟アルキル側鎖を有する全芳香族ポリエステルが形成するサーモトロピック液晶のせん断流動配向挙動

    第55回高分子学会年次大会  2006 

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  • ポリスチレンとポリアスパラギン酸エステルからなるブロック共重合体の固体状態でのコンホメーション変化

    第55回高分子学会年次大会  2006 

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  • 液晶―非晶ジブロック共重合体の非晶シリンダー状ミクロドメインにアンカリングされた液晶成分の配向

    平成18年度繊維学会年次大会  2006 

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  • 主鎖型液晶性高分子を基盤としたモノドメイン･ネマチック液晶エラストマーの昇降温による可逆な伸縮挙動

    平成18年度繊維学会年次大会  2006 

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  • 全芳香族エーテルスルホン-b-エーテルケトンブロック共重合体の合成と高次構造解析

    平成18年度繊維学会年次大会  2006 

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  • 側鎖型液晶性高分子を一成分とするブロック共重合体のせん断流動配向とミクロドメイン界面の液晶アンカリング

    第52回高分子研究発表会（神戸）  2006 

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  • せん断流動配向挙動から見えてきた液晶高分子の構造とダイナミクス

    第2回東北地区活性化若手セミナー  2006 

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  • Interesting features on electric field-induced transformation of dark chiral phase to highly birefringent B2 phase with SmCAPA

    International Symmposium on Banana Liquid Crystals-Polarity, Chirality, Biaxiality and Frustration  2007 

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  • Thermally Reversible Distortion Observed for Monodomain Nematic Elastomer of Cross-linked Main-Chain Polyester

    2007 International Symposium on Chemical Engineering: AOTULE  2007 

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  • 側鎖にスルホン酸基を有する全芳香族エーテルスルホン-b-エーテルケトンブロックオリゴマーの合成と自己組織化

    第56回高分子学会年次大会  2007 

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  • 世代の異なる芳香族アミドデンドロンを側鎖に有するポリスチレン誘導体からなるブロック共重合体の合成と自己組織化

    第56回高分子学会年次大会  2007 

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  • 末端にスルホン酸基を有する分岐型自己組織化材料の合成

    2007 

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  • 側鎖型液晶高分子とそれを一成分とするジブロック共重合体のせん断流動配向

    平成１９年度 繊維学会年次大会  2007 

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  • 主鎖型高分子のモノドメイン･スメクチック液晶を光架橋したエラストマーの可逆な伸縮挙動

    繊維学会年次大会  2007 

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  • Interesting features on electric field-induced transformation of dark chiral phase to highly birefringent B2 phase with SmCAPA

    International Symmposium on Banana Liquid Crystals-Polarity, Chirality, Biaxiality and Frustration  2007 

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  • スメクチック液晶場において二量体化合物がとるU字型コンフォメーション

    第56回高分子討論会  2007 

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  • 光学不活性側鎖を有する有機ポリシランの液晶相転移挙動

    第56回高分子討論会予稿集  2007 

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  • 側鎖型液晶高分子とそれを一成分とするジブロック共重合体のせん断流動配向

    第５６回高分子討論会  2007 

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  • 主鎖型液晶高分子を基盤としたモノドメイン・ネマチック液晶エラストマーの昇降温によるか逆な伸縮挙動

    第40回中部化学関係学協会支部連合秋季大会  2009 

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  • 電界紡糸法による液晶高分子ナノファイバーの構造

    第47回高分子と水に関する討論会  2009 

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  • Viscosity behavior on polar nematic liquid crystal formed from aromatic polyesters

    2008 

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  • Regular undulation morphology observed in fructure surface of glassy solid material of SmC*

    57th SPSJ Annual Meeting  2008 

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  • Chiral Memory on Transition between Weakly Birefringent B2 Phase and Electric-Field-Induced Highly Birefringent B2 Phase in a Banana-shaped Molecule

    BANANA’07 International Symposium on Banana Liquid Crystals  2008 

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  • 全芳香族ポリエステルネマチック液晶の粘度挙動と極性構造

    高分子学会年次大会  2008 

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  • キラルスメクチックC液晶ガラスのへき開面に見られる規則的な起伏形態

    第57回高分子学会年次大会  2008 

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  • 放射光X線回折による棒状高分子のネマチックースメクチックーカラムナー液晶相転移の追跡

    第57回高分子学会年次大会  2008 

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  • スメクチック液晶場において二量体化合物がとるＵ字型コンフォメーション

    平成２０年度繊維学会年次大会  2008 

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  • フェニルエチルアミン誘導体のキラル液晶におけるらせん反転

    繊維学会予稿集 ２００８  2008 

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  • Chiral Memory on Transition between Weakly Birefringent B2 Phase and Electric-Field-Induced Highly Birefringent B2 Phase in a Banana-shaped Molecule

    BANANA’07 International Symposium on Banana Liquid Crystals  2008 

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  • Inner structure of electrospun liquid crystal polymer nanofiber

    International Nanofiber Symposium 2009  2009 

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  • かさ高い置換基をスペーサーに有する主鎖型液晶性高分子が発現する特異なスメクチック液晶相構造

    平成21年度繊維学会年次大会  2009 

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  • 環状二量体化合物が形成するスメクチック液晶

    第64回繊維学会年次大会  2009 

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  • 主鎖型キラルスメクチックC液晶性高分子のへき開面とフィルム表面に見られる規則的な起伏形態

    第64回繊維学会年次大会  2009 

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  • 側鎖型高分子ネマチック液晶のせん断流動配向挙動

    第64回繊維学会年次大会  2009 

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  • ビニル型ポリノルボルネンを主鎖に有する高分子液晶

    2009 

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  • 長さの異なる剛直棒状ポリシラン二成分混合系の示す特異なスメクチック液晶相

    第58回高分子討論会  2009 

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  • １－メチルペンタンをスペーサーとした主鎖型液晶性高分子が形成する特異なスメクチックA構造

    高分子討論会予稿集  2009 

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  • 液晶性デンドリマーの末端基による相転移 挙動の変化

    第58回高分子討論会  2009 

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  • 置換メチレン高分子液晶のスメクチック相 挙動に与える極柔軟鎖スペーサーの効果

    第58回高分子討論会  2009 

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  • 置換基密度と置換位置が異なる高分子液晶のスメクチック相挙動

    第58回高分子討論会  2009 

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  • Unusual formation of smectic A structure in closslinked monodomain elastomer of LC polyester with 3-methylpentane spacer

    2009 

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  • Unusual smectic A structure formed by main-chain liquid crystalline polymer with 1-methylpentane spacer

    Polymer Preprints, Japan vol58  2009 

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  • Inner structure of electrospun liquid crystal polymer nanofiber

    International Nanofiber Symposium 2009  2009 

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  • Anomalous Smectic Liquid Crystal Structure Formed by Main-Chain Liquid Crystalline Polyester with Bulky Branch Group attached on Spacer

    Fiber Preprints, Japan  2009 

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  • Anomalous Smectic A Structure Formed by Main-Chain Liquid Crystalline Polyester with 1-Methyl Pentane Spacer

    Polymer Preprints, Japan  2009 

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  • PROLATE SPHEROID DOMAINS FORMED BY 2 WT% AMORPHOUS SEGMENT IN AN ASYMMETRIC LC BLOCK COPOLYMER / LC HOMOPOLYMER MIXTURE

    237th American Chemical Society National Meeting  2009 

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  • Unusual formation of smectic A structure in closslinked monodomain elastomer of LC polyester with 3-methylpentane spacer

    2009 

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  • 電界紡糸法により作製した液晶高分子ナノファイバーの内部構造

    第58回高分子学会年次大会  2009 

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  • １－メチルペンタンをスペーサーとした主鎖型液晶性高分子が形成する特異なスメクチックA構造

    第58回高分子学会年次大会  2009 

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  • 長さの異なる剛直棒状ポリシラン二成分混合系の示す特異なスメクチック液晶相

    第58回高分子学会年次大会  2009 

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  • 電界紡糸法により作製した液晶高分子ナノファイバーの内部構造

    平成21年度繊維学会年次大会  2009 

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Awards

  • 科学技術分野の文部科学大臣表彰（開発部門）

    2024.4   文部科学省  

    戸木田雅利, 西村 涼

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  • 第40回繊維学会賞

    2013.6   一般社団法人 繊維学会   高分子液晶の構造とダイナミクスに関する研究

    戸木田雅利

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  • 高分子学会ヤングサイエンティスト講演賞

    2006  

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    Country：Japan

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  • Award for Encouragement of Research in Polymer Science; The Society of Polymer Science, Japan(2003)

    2003  

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  • 高分子学会高分子研究奨励賞

    2003  

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    Country：Japan

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  • 第４回インテリジェント材料国際会議高木賞

    1998  

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Research Projects

  • ポリマーグラフト粒子の階層的ダイナミクスと弾性回復，自己修復，表面張力不安定

    Grant number：25K21718  2025.6 - 2028.3

    日本学術振興会  科学研究費助成事業  挑戦的研究(開拓)

    戸木田 雅利

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    Grant amount：\25740000 （ Direct Cost: \19800000 、 Indirect Cost：\5940000 ）

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  • 水晶体模倣光学システムへの応用を指向したゼロ複屈折エラストマーの開発

    Grant number：25K01524  2025.4 - 2029.3

    日本学術振興会  科学研究費助成事業  基盤研究(B)

    黒川 成貴, 戸木田 雅利

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    Grant amount：\18720000 （ Direct Cost: \14400000 、 Indirect Cost：\4320000 ）

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  • 側鎖官能基の密集と主鎖の高配向性を特徴とした液晶性ポリ置換メチレンの機能発現

    Grant number：23K26713  2023.4 - 2027.3

    日本学術振興会  科学研究費助成事業  基盤研究(B)

    戸木田 雅利

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    Grant amount：\18590000 （ Direct Cost: \14300000 、 Indirect Cost：\4290000 ）

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  • 液晶性高分子が形成する単一ドメインミルフィーユ構造へのキンク導入と力学物性

    Grant number：21H00095  2021.4 - 2023.3

    日本学術振興会  科学研究費助成事業  新学術領域研究(研究領域提案型)

    戸木田 雅利

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    Grant amount：\6890000 （ Direct Cost: \5300000 、 Indirect Cost：\1590000 ）

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  • ブロック共重合体ミクロ相分離を利用したモノドメイン液晶エラストマーの新規調製法

    Grant number：19H02770  2019.4 - 2023.3

    日本学術振興会  科学研究費助成事業  基盤研究(B)

    戸木田 雅利

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    Grant amount：\17290000 （ Direct Cost: \13300000 、 Indirect Cost：\3990000 ）

    side-on型側鎖型液晶についてその液晶相転移挙動，ポリメタクリレートとのブロック共重合体のミクロ相分離挙動について検討した．
    スペーサー炭素数nが6, 8, 10, 12のside-on型側鎖型液晶性ポリメタクリレートを原子移動ラジカル重合法で合成した．分子量1万-2万，ガラス転移温度30-45℃，液晶-液体相転移80-90℃であり，液晶種はネマチックのみであった．
    ポリブチルメタクリレートとのブロック共重合体を合成した．液晶セグメントの体積分率φが50-80%の範囲でミクロ相分離構造を調査した．ミクロ相分離構造の組成および温度依存性は液晶性セグメントのnによって異なった．n = 6, 8では，液晶性セグメントが液晶を形成している温度（液晶温度）において，φ = 50-65%の共重合体がラメラ状ミクロ相分離構造を形成する一方，液晶性セグメントが液体となる温度ではφ = 65%の共重合体は非晶シリンダー／液晶マトリクスのミクロ相分離構造を形成した．n = 10，φ = 65%の共重合体は液晶温度でも非晶シリンダー／液晶マトリクスのミクロ相分離構造となった．n = 12のブロック共重合体ではφ = 45%の共重合体のみラメラ状ミクロ相分離し，他の分率では温度によらず非晶シリンダー／液晶マトリクスのミクロ相分離構造を形成した．
    ラメラ状ミクロ相分離界面に対する液晶配向がnによって異なることを見出した．n=6, 8では界面に対して液晶が垂直に配向する．n=10, 12では界面に対して液晶が平行に配向した．

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  • 液晶ブロック共重合体が形成するミクロ相分離ミルフィーユ構造のキンク形成と力学物性

    Grant number：19H05120  2019.4 - 2021.3

    日本学術振興会  科学研究費助成事業  新学術領域研究(研究領域提案型)

    戸木田 雅利

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    Grant amount：\6890000 （ Direct Cost: \5300000 、 Indirect Cost：\1590000 ）

    高分子材料系において層状構造にキンクを導入するときは，層の法線方向に延伸する方法が一般的である．しかし，延伸によって高分子鎖が配向してしまうと，強化されたとしても，それがキンク導入によるもの（「キンク強化」）なのか，分子配向によるものかの区別がつかない．そこで，本研究では，非晶成分の体積分率が高くなるとラメラが自発的に傾いてキンク構造を形成する液晶ブロック共重合体について，その応力―ひずみ特性を調査することにした．
    組成によって自発的にキンク構造を形成する液晶ブロック共重合体B3-x-EMA-yについて，キンク構造の有無による応力-ひずみ特性の変化を検討した．液晶セグメントの分子量がｘ=7.9 [kg/mol]，非晶ポリエチルメタクリレート（EMA）体積分率がｙ＝15~51%のB3-x-EMA-yを合成した．y＞39で小角X線散乱のラメラ構造に由来する反射が4点にスプリットし，キンク構造の形成が認められた．一方，応力-ひずみ特性の初期弾性率，降伏応力，降伏ひずみ，破断ひずみはyの増加に伴い単調に増加し，キンク形成による不連続な増加は認められなかった．
    B3-x-EMA-yの対象試料として，組成によらず平坦なラメラ構造を形成する液晶ブロック共重合体B5-x-EMA-yを調製，ラメラ法線がフィルム長手方向にあるモノドメインフィルム試料を調製し，長手方向にフィルムを延伸した時の応力-ひずみ特性を調査した．B5-29-EMA-22の応力はひずみに比例して増加，極大をとった後，平坦となった．一方B5-29-EMA-44の応力-ひずみ曲線は初期の勾配はB5-29-EMA-22と変わらない一方で，応力は極大をとらず，緩やかにではあるが増加し続けた．これらの応力の違いは，B5-29-EMA-44では，長いEMA鎖が液晶ブロックラメラを分断した「分断ラメラ」を形成している点にあると考えた．

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  • Thermal phononics materials utilizing self-assemblies of polymer-grafted nanoparticles

    Grant number：18K19108  2018.6 - 2021.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Research (Exploratory)

    Tokita Masatoshi

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    Grant amount：\6370000 （ Direct Cost: \4900000 、 Indirect Cost：\1470000 ）

    Poly(acrylonitrile) (PAN)-grafted nanoparticles with different core diameters of 30 and 150 nm were prepared and cast from a solution into films. The films comprised cores arranged in a face-centered cubic (FCC) lattice, which was maintained after the carbonization, albeit with shortened lattice sides. Elution of the silica cores by hydrofluoric acid etching produced carbonized PAN films with FCC-arranged pores. For the particles with PAN grafted at densities of 0.3 chains nm-2, the carbonized PAN exhibited X-ray diffraction (XRD) peaks associated with the graphitic structure. Conversely, the same carbonization of similar PAN-grafted nanoparticles with a lower grafting density of 0.05 chains nm－2 produced similar porous carbon films, but the graphitic structure was not evidenced by the associated XRD patterns. These results confirm that lower temperature graphitization requires dense grafting of PAN chains onto a solid surface.

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  • Studies on the Effect of junction-point structure on the properties of branched polymers

    Grant number：16K14003  2016.4 - 2018.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Challenging Exploratory Research

    Ishiwari Fumitaka, TOKITA Masatoshi, FUKUSHIMA Takanori, KAJITANI Takashi, KIMURA Tadahiro, SUGIMOTO Atsuki, YAMASHITA Yukihiro, OGIWARA Hibiki, LIU Haonan

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    Grant amount：\3770000 （ Direct Cost: \2900000 、 Indirect Cost：\870000 ）

    It is generally considered that the chemical structures of the junction points of brunched polymers do not largely impact on their properties, because the contribution of a junction point is small with respect to the whole polymer length and gravity. However, we recently found that three-arm star-shaped polymers with a junction point consisting of a tripodal triptycene exhibit significantly different properties from those of three-arm star-shaped polymers with other junction points. In this study, we investigated the remarkable assembling behavior and rheological properties of the triptycene-containing star-shaped polymers.

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  • High Thermal Conductivity of Main-Chain Liquid Crystalline Polyesters

    Grant number：26410220  2014.4 - 2017.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    Tokita Masatoshi, YOSHIHARA Shusuke, Sugimoto Atsuki, TAKAHASHI Chiharu

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    Grant amount：\5200000 （ Direct Cost: \4000000 、 Indirect Cost：\1200000 ）

    The thermal conductivity of main-chain liquid crystal PB-10 polyester hardly depends on the lamellar size although the thermal conductivity was measured for non-oriented (bulk) samples.
    The thermal conductivity of BB-n polyesters ranged from 0.3 - 0.4 Wm^-1K^-1 and higher for even-member BB-n than off-memeber ones. Even-member BB-n polyesters are crystalline, so the thermal conductivity may be affected by the crystallinity.
    PmBEn polymers form two types of smectic LCs that differ in their degree of side-chain overlap, which affects the thermal diffusivity. Smectic A1 (SmA1) LCs with fully interdigitated side chains have 20% greater thermal diffusivity than smectic Ad LCs with side chains overlapping at the alkyl tail. The variations in thermal diffusivity in PmBEn polymers are correlated with the smectic LC structures characteristic of side-chain LC polymers.

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  • Observation of Layer Fluctuations and Dynamics in Side-Chain polymer Nematic Liquid Crystals

    Grant number：22340120  2010.4 - 2013.3

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    TOKITA Masatoshi, MATSUOKA Tatsuro, KANG Sungmin

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    Grant amount：\18980000 （ Direct Cost: \14600000 、 Indirect Cost：\4380000 ）

    The dynamic behaviour of twin dimer nematic liquid crystals were investigated for alpha,omega-bis(4-cyanobiphenyl-4'-yloxy)alkanes (BCBO-m, m = 7-10: the number of spacer methylene units) by dynamic light scattering and the frequencies of the splay, twist and bend modes were determined successfully. The frequencies of BCBO-m are dependent on m: they oscillate depending on the parity of m with exhibiting larger values for even-membered BCBO-m and decrease with increasing m. Such an odd-even oscillation in the splay and bend mode frequencies are governed by that in the elastic constants.

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  • Formation of helical structure and induced helical sense of aromatic polyamide by N-alkylation

    Grant number：19550202  2007 - 2008

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    KAWAUCHI Susumu, WATANABE Junji, TOKITA Masatosi

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    Grant amount：\4290000 （ Direct Cost: \3300000 、 Indirect Cost：\990000 ）

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  • Clarification of nano-scaled structures in biological systems resulting in beautiful colors and their artificial production for application to optical

    Grant number：18GS0205  2006 - 2010

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Creative Scientific Research

    WATANABE Junji, TOKITA Masatoshi, KAWAUCHI Susumu, KAN Sonmin, OKOSHI Kento

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    Grant amount：\389610000 （ Direct Cost: \299700000 、 Indirect Cost：\89910000 ）

    In biological systems, there are so many iridescent colors which are based on the periodic nano-scaled structures. We clarified these structures, and then created artificially the similar structures, exploiting the self-assembly of polymers in conventional fields such as liquid crystal, phase separation, colloidal crystal and so on. Optical properties of these fine materials have been also analyzed for the application to optical devices.

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  • ヘアピンフォールドの生成・消滅による主鎖型液晶エラストマーの異常な大変形伸縮挙動

    Grant number：18655091  2006 - 2007

    日本学術振興会  科学研究費助成事業  萌芽研究

    渡辺 順次, 川内 進, 戸木田 雅利

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    Grant amount：\3600000 （ Direct Cost: \3600000 ）

    モノドメイン・ネマチック相のフリースタンディング配向試料を用い,配向軸に平行な方向でサイズの温度変化を観測した.その結果,昇温・降温降に伴って配向方向に50%可逆に伸縮する.体積の温度依存性は無視できるので,このサイズの増大が配向軸に垂直方向の断面積の現象を伴っていること,つまり断面を貫通する分子鎖の数が大きく変化することを示している.断面積の温度依存性がヘアピン・フォールド数の温度依存性を反映するものとし,具体的なモデルを提案した.ネマチック温度で配向軸方向の応力-ひずみの関係を調べ折りたたみ鎖の引き延ばしが起こっていることを示唆する結果を得た.光反応性部位を導入した主鎖型液晶高分子を設計合成し,モノドメイン状態での架橋に成功した.このエラストマーはスメクチックCA相を形成する.等方相に昇温すると配向方向に40%収縮するが,液晶状態に降温すると長さは5%しか回復しない.そのときの液晶は自発的に配向しているが,液晶種はスメクチックAであった.このスメクチックA液晶を配向軸方向に延伸すると,応力平坦域でスメクチックCA液晶に転移することを応カ-ひずみ曲線・X線回折同時測定で確認した.スメクチックエラストマーはネマチックエラストマーと異なり,ダイレクター方向に位置の秩序が存在し,層としての性質を持つ。そのため分子がダイレクター方向にその相対的位置を自由に変えられないこと,折りたたみ部分を特定の部位に収容し,結晶とよく似た折りたたみ鎖ラメラ構造を形成するなどの特徴を持つことから,延伸前のスメクチックA液晶は,折りたたみ鎖によって構成されていると考えた.

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  • 液晶セグメントの配向を駆動力としたブロック共重合体ミクロドメインの配向制御

    Grant number：18750095  2006 - 2007

    日本学術振興会  科学研究費助成事業  若手研究(B)

    戸木田 雅利

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    Grant amount：\3700000 （ Direct Cost: \3700000 ）

    一様な配向ベクトル分布を持う液晶に磁場を印加すると、あるしきい磁場H_cで配向ベクトルの方向が突然磁場方向へと変化することが知られている(フレデリックス転移)。H_cは液晶の弾性定数Kと、H_c=π(K/△_χ)^<1/2> d(d:試料厚さ、△_χ:磁気感受率異方性)という関係にある。一様に配向させた液晶を超伝導コイル中に置くと、しきい値以上で液晶成分のフレデリックス転移が起こることを確認した。しかしながらミクロドメインのフレデリクス転移は5テスラの磁場では確認できなかった。ミクロドメインの配向が強固であり液晶の配向転移をも阻害していると考えた。歪み30〜50%程度の大振幅振動せん断で液晶およびミクロドメインを配向させ、得られた配向状態とせん断条件(温度・周波数)の動的粘弾性マスターカーブ上の位置との相関を調査した。非晶ジブロツク共重合体のラメラミクロドメイン構造では、大振幅振動せん断配向がマスターカーブ上の緩和周波数に区切られた3つの領域に対応してせん断条件に依存することが報告されているが、本研究の素材では大振幅せん断では良好な配向状態が得られず、せん断配向と各種緩和モード(分子運動、構造揺らぎ)との関係は明らかになるに到っていない。

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  • Study of smectic layer liquid crystal formed by rod-like polymers arranged their molecular terminals regularly in space

    Grant number：17350104  2005 - 2006

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    KAWAUCHI Susumu, TOKITA Masatoshi

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    Grant amount：\14800000 （ Direct Cost: \14800000 ）

    Polysilanes having optically active side-chain exhibit rod-like configuration. They forms clear thermotropic-cholesteric liquid crystal when their molecular weights are relatively small, while they show smectic phase under cholesteric liquid crystal phase when molecular weight distribution is narrow (Mw/Mn < 1.1) and their smectic layer distance corresponds to the molecular length of polysilane. In this study, we mixed two samples with different molecular weights to observe behavior of smectic layers. As a result, we found that smectic phase is unstable when difference of the molecular weights is small, while two smectic phase is separated when difference of the molecular weights is large.
    Additionally, we prepared a diblock copolymer composed of polystyrene (PS) and side-chain liquid crystal polymer (LCP) by atom transfer radical polymerization. The weight fraction of the PS segment is 0.22, resulting in a microsegregated structure with PS cylinders hexagonally packed in a matrix of LCP, which forms smectic A, nematic and isotropic phases in order of increasing temperature. Shear flow at nematic temperatures orients well the PS microcylinders, as well as the nematic mesogens of the LCP in the velocity direction. A high degree of orientation of 0.95 is attained for microcylinders while the orientational order parameter of the nematic LC is around 0.5. Interestingly, the nematic LC mesogens recover their initial orientation upon cooling after they have lost the orientational order in the isotropic melt. This spontaneous orientation shows that PS cylinders whose orientation is strongly sustained with a temperature variation acts as an anchoring substrate for the nematic mesogens.

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  • ネマチック液晶溶液からの相分離を利用したハニカムネットワーク構造の創成

    Grant number：16655092  2004 - 2005

    日本学術振興会  科学研究費助成事業  萌芽研究

    渡邉 順次, 黒木 重樹, 戸木田 雅利, 安藤 勲

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    Grant amount：\3600000 （ Direct Cost: \3600000 ）

    ポリ(γ-ベンジル-L-グルタメート)(PBLG)のリオトロピック液晶を磁場内で配向させ、エチルジアミンあるいはブチルジアミンを導入し、化学架橋を施すことで、高分子-溶媒のミクロ相分離を誘起させ、nmスケールのチャンネルを有するゲルを創製した。具体的には、PBLG(MW=277,000)を1,4-ジオキサンに溶解した25wt% PBLGリオトロピック液晶0.2gを、内径4.2mmのテフロンチューブに入れ、室温で1日NMR磁場(10.5T)中でPBLG鎖(α-ヘリックス構造)を磁場方向に十分に配向させた後、架橋剤としてエチレンジアミン((A)5μL、(B)10μL、(C)20μL)を添加し、室温で3日間エステルアミド交換反応を進行させた。その後、サンプルA、B及びCをサンプルチューブから取り出し、乾燥後ロッド状の高配向試料を得た。その結果、サンプルBではμmスヶールのチャンネルが、また架橋剤濃度が低い(A)では構造色を有する、数百nmサイズのチャンネルが得られることがわかった。特に前者では、NMRイメージング法を用いた手法で、チャンネルが試料全体にわたって貫通していることを示すことができた。また、類似なチャンネル構造は、PBLG-ベンジルアルコール系の液晶を90℃のゾル状態から、室温のゲル状態への温度ジャンプすることでも、作成できることが、光散乱測定によって推察された。

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  • 折りたたみ鎖層構造を有する高分子スメクチック液晶の粘弾性特性とずり流動配向挙動

    Grant number：16750183  2004 - 2005

    日本学術振興会  科学研究費助成事業  若手研究(B)

    戸木田 雅利

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    Grant amount：\3700000 （ Direct Cost: \3700000 ）

    BB-5(3-Me)ポリエステルが形成するスメクチック液晶を回転型レオメータでずり流動させ、モノドメインサンプルを調製し、そのまま動的粘弾性測定を行った。高分子材料の粘弾性特性を詳細に検討するため、10^<-3>〜10Hzの周波数領域、0〜150℃の温度領域で動的粘弾性測定を行った。その結果、いずれの配向試料でも、温度-時間換算側によって液晶温度領域で単一のマスターカーブが作成できた。シフトファクターは顕著な異方性を示さなかった。いずれの温度・周波数領域でも、垂直配向試料よりも平行配向試料のほうが高い弾性率を示す。また、同一の温度で比較すると、スメクチックの等方化温度近傍で、弾性体-粘性体転移周波数が観測された。転移周波数は、垂直配向のほうが平行配向よりも高い傾向にあった。この動的粘弾性のデータを参照しながら、歪み30〜50%程度の動的ずりでスメクチック液晶を配向させ、その配向をX線回折で評価した。その結果、動的ずりではスメクチック液晶は配向しなかった。定常ずりを印加しながらの広角X線回折測定を行い、トルクと配向度との相関を調査した。トルクはずり印加直後の急増し、5分以内に急減するが、その時点で、1時間ずりを印加した場合と同等の配向度が達成されていることが分かった。また、小角X線散乱測定で、約80Åの長周期を捕捉することに成功したが、熱処理条件、ずり流動条件による長周期の顕著な変化は確認されなかった。

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  • Liquid crystalline polymers with banana mesogens-Polarity and chirality induced by their banana shape

    Grant number：15350130  2003 - 2004

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    WATANABE Junji, KAWAUTI Susumu, TOKITA Masatoshi

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    Grant amount：\14600000 （ Direct Cost: \14600000 ）

    Liquid crystalline compounds with non-linear molecular shape, so-called banana-shaped molecules, have become a fruitful topic in liquid crystal researches since ferro-, anti-ferroelectricity and chrality were found in such achiral moleculear systems. A number of banana-shaped liquid crystalline molecules have been synthesized and studied by particularly modifying of the well-known banana-shaped molecule 1,4-phenylene [4-(4-n-alkoxypheny liminomethyl)benzoates, P-n-O-PIMB, subsequently, a variety of liquid crystalline phases and interesting properties have been revealed. In this study, we prepare a new homologous series of banana-shaped molecule containing oxadiazole core,2,5-bis(4'-n-alkylcarboxy biphenyl-4-yl)-[1,3,4]-oxadiazole (ODBBP-n) to extend the study on the polymeric banana molecules. To our knowledge, this is the first example of five-membered heterocyclic liquid crystalline molecule that exhibits banana class mesophase. In addition, the relationship between the bending geometry and mesomorphic behavior of ODBBP-n is also demonstrated by comparing with thiaziazole core derivatives. The results obtained simply described below.
    1)From the analysis of chiral memory between B2 and B4 phases, it was concluded that the spontaneously arising chirality is due to the chiral conformation characteristic of the banana shape.
    2)In ferroelectric B2 phase, the distinct layer undulation takes place as a result of the interplay between the spontaneous polarization and layer elasticity.
    3)In the banana molecules with the asymmetric alkyl tails, it was found that antiferroelectric phase is altered to the ferroelectric phase when two tail groups have the remarkable difference in their length.
    4)The extension of the study to the polymeric system failed because of the high temperature melting of polymer. Now, we try to synthesize the dimer and trimer of banana molecules.

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  • SHG-enhancement Study of Chained-Chromophores in their Polar Nematic Liquid Crystal Phase

    Grant number：15550180  2003 - 2004

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (C)

    KAWAUCHI Susumu, WATANABE Junji, TOKITA Masatoshi

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    Grant amount：\3600000 （ Direct Cost: \3600000 ）

    SHG property of poly(4-aminobenzoic acid), an aromatic polyamide with head-tail structure, was investigated by calculating the hyperpolarizability (β) for (H_2N-(C_6H_4CONH)_n-C_6H_4COOH) (AA oligoamides) and (H-(C_6H_4CONH)_n-C_6H_5)(BA oligoamides) at density functional theory (DFT) B3LYP/6-31G^*. The β values of AA and BA oligoamides increase with increasing number of amide bonds (n). Since the β values of AA oligoamides are always larger than those of BA oligoamides, the terminal effect on the β value for oligoamides is significant. The two-level model ascribes the origin of the large β of AA oligoamides mainly to the large transition moment between the ground state and the excited state. For both AA and BA oligoamides, the excitation energies are almost constant values with increasing the number of amide bonds so that the red-shift involved with polymerization may be small. The result indicates that poly(4-aminobenzoic acid) is a new candidate of SHG-active chromophore for improving efficiency-transparency trade-off problem.
    Then N-methylation effect on aromatic amides were investigated by using the DFT calculations. Benzanilide (BA) adopts the trans conformation with lower energy of 4.60 kcal/mol than cis one. On the other hand, N-methylbenzanilide (MBA) adopts the cis conformation with lower energy of 3.23 kcal/mol than trans one. N-methylated para-linked aromatic diamide compounds were also studied by the DFT calculations and they also prefer the cis conformation. Since there are two stable conformations (cis-cis-syn and cis-cis-anti), N-methylated aromatic polyamides have enormous various conformations in addition to losing linearity of main chains. As a result, N-methylated aromatic polyamides is not liquid crystal but amorphous.
    Moreover, we studied various N-methylated aromatic diamide compounds by using the DFT calculations in order to check these structures are chiral or not. The relative energies for six stable conformers for N-methylated aromatic diamides were obtained. All of these compounds prefer the cis conformation, and most of them are chiral. Therefore, it is experimentally interesting to investigate whether the chilarity of these amides are induced by addition of a chiral dopant or not. We succeeded in observation of chirality induction on N-methy aromatic amides with chiral amines. This result indicates that N-methyl aromatic amides may be useful as a building block for constructing a new chiral material such as a chiral foldamer and liquid crystal.

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  • 液晶エラストマーの構造と力学物性に見る液晶性と高分子性の融合

    Grant number：14750705  2002 - 2003

    日本学術振興会  科学研究費助成事業  若手研究(B)

    戸木田 雅利

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    Grant amount：\3500000 （ Direct Cost: \3500000 ）

    主鎖型高分子をベースとしたスメクチック液晶エラストマーおよびネマチック液晶エラストマーを調製し、その昇降温に伴う伸縮挙動を調査した。スメクチック液晶エラストマーはスメクチック層構造が存在する限り層方線方向の主鎖の並進運動が規制されるため、エラストマーが等方液体へと転移する過程で急速に収縮する。示差走査熱量測定で決定した相転移温度以下まで昇温した後に降温すると伸張する。ネマチック液晶エラストマーは昇温に伴い、ネマチック液晶温度領域で連続的に収縮する。この実験結果は液晶状態にある高分子鎖の形態を議論したド・ジャン-ワーナー理論で説明できた。実験結果から得られる鎖の曲げの弾性定数は、中性子散乱から得られたネマチック液晶ポリエステルのデータから算出されるものとほぼ一致するものであった。主鎖型液晶高分子を架橋すると等方液体-液晶相転移エンタルピーが著しく低下することが問題となる。その問題を解決するために新規架橋剤を設計、合成して架橋に用いた。その結果、従来用いてきた芳香族系架橋剤よりも脂肪族架橋剤を用いたほうが液晶化度の低下は小さくなった。また、配向した後に架橋する方法として、本研究で用いている液晶性ポリエステルと類似の構造を有するポリエチレンテレフタレートの架橋に用いられていたベンゾフェノン化合物を主鎖中に導入し架橋を試みた。しかし、ベンゾフェノン骨格の反応性が低く、有効な架橋構造を得ることができなかった。

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  • ベント型メソゲンを有する主鎖型高分子のフラストレート液晶―らせん散逸とキラリティ

    Grant number：14655357  2002

    日本学術振興会  科学研究費助成事業  萌芽研究

    渡辺 順次, 戸木田 雅利, 川内 進

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    Grant amount：\3200000 （ Direct Cost: \3200000 ）

    本研究で取り扱う液晶高分子は、ベント形状をしたメソゲン基を持つことを特徴とした主鎖型高分子である。具体的には、オキサジアゾール環を弁とコアーとした高分子の設計を試み、その出発原料としての、モノマーベント型液晶の研究を中心的に行った。このオキサジアゾール環を有するベント分子は、等方相直下の高い温度では、通常のネマチック液晶そしてスメクチック液晶を形成するが、これらの液晶相以下の温度では、バナナ型液晶に特徴的なB4相と呼ばれる相が出現する。この相は、ベント方位が同一方向になるように充填した結果現れる自発分極からの散逸現象と考えられ、スメクチックブロックが螺旋的にねじれたTGB類似の相と考えられた。また、この相はキラリティも有しており、自発的なキラリティの発生した特異な相と理解された。
    また、このようなモノマーを重合したポリエステルで液晶相転移を調べた結果、類似な相挙動を認めることができたが、溶融粘度が著しく大きくなるため、正確な相挙動の同定を行うことが困難であったため、現在、高分子試料の分子量分別、および2量体、3量体等オリゴ高分子の合成を試み、高分子効果(連結)の明快な解を得るべく、鋭意設計を行っている状況である。

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  • ポリペプチドのヘリックスセンスの可逆な反転を利用したコレステリック液晶シンクロ材料

    Grant number：13022220  2001 - 2002

    日本学術振興会  科学研究費助成事業  特定領域研究

    渡辺 順次, 戸木田 雅利, 川内 進

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    Grant amount：\4000000 （ Direct Cost: \4000000 ）

    L体アミノ酸からなるポリペプチドは右巻きα-ヘリックスを形成する。しかし、ポリL-アスパルテートは、側鎖種や溶媒種に依存して左巻きらせんも形成する。そればかりか、特異な溶媒系では温度の昇降によりその巻き性を反転させたりもする。本研究では、さらに、希薄溶液系のみならず、濃厚溶液のコレステリック液晶でも巻き性反転が認められ、この場合同時に巨視的なコレステリックらせんのセンスまでも反転させる。また、ポリ(β-フェニルプロピルL-アスパルテート)(3PLA)においては、固体状態でも可逆ならせん反転が起こることも見つけ、巻き性の異なる二つのらせん構造、らせん反転の機構そして原動力について、多くの測定手段、X線、IR、NMR、ORDなどを幅広く利用することで明らかにした。その結果、右巻きらせんは18残基で5回転したα-ヘリックス、左巻きは4残基で1回転したω-ヘリックスであること、またらせん反転は規則正しく充填した、限られた円柱状の空間で起こる一次元の秩序-秩序転移であること、そして側鎖構造の精密解析を通して、2種のヘリックス形態で形態が大きく変わることを明らかにし、その駆動力が側鎖の形態の自由度が生み出すエントロピー力であることを示唆することができた。
    また、本研究は溶液中でα-ヘリックスとして溶解しているL体およびD体高分子が相互に混合されると、沈殿を生じるという興味ある現象にも言及している。これは分子間の水素結合が切れ、D、L分子間での水素結合が形成されたD, Lコンプレックスの形成によるものであることを示し、狂牛病との相関についても触れてある。

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  • Preparation of solid cholesteric films from biomaterials and usage of their optical performances

    Grant number：13450389  2001 - 2002

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    WATANABE. Junji, TOKITA Masatoshi, KAWAUCHI Susumu

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    Grant amount：\13800000 （ Direct Cost: \13800000 ）

    In the biological systems, there are many rod-like molecules which can form the liquid crystals. These molecules form the microfibril and are widely distributed in the skeletal systems, including plant cells, insect cuticles, bone and cornea. They function like angle-ply laminates which have the helical twisted structure as in the cholesteric liquid crystal, leading to the hypothesis that the molecules are oriented by spontaneous ordering or self-assembly during a formation of cholesteric liquid crystalline phases.
    More recent theoretical studies indicate that the biological rod-like molecules can also form the smectic and hexagonal columnar liquid crystals other than the cholesteric one. The variety of structures are responsible for the variety of performances in the biological system. In this study, by using the polysilane, we have successfully confirmed that simple rod-like polymers show the stepwise transformation to the higher ordered liquid crystal from simple cholesteric liquid crystal. According to these studies, we also success in the preparation of the high performance materials with the excellent mechanical properties and optical properties.

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  • Development of Polarizer Using Anisotropic Light Scattering in Polymer

    Grant number：12555003  2000 - 2001

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    TOKITA Masatoshi, FURUKI Makoto, OGINO Kenji, WATANABE Toshiyuki

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    Grant amount：\13100000 （ Direct Cost: \13100000 ）

    We demonstrate optical characteristics of polymeric linear polarizers produced from oriented two-component amorphous polymer blends. Refractive index of dispersed phase of blend is closely to ordinary refractive index of birefringent continuous phase, while refractive index mismatch is simultaneously generated in the perpendicular direction. Films are therefore transparent or opaque depending on the polarization direction of the incident light.
    However, both transmittance and polarizing efficiency measured by UV-VIS spectra depends on incident wavelength, which is ascribed to wavelength dependence of light scattering by small particles. To eliminate this character, we tried to increase length of dispersed phase to drawing direction. By changing dispersed phase contents, we could control particle (dispersed phase) size to the perpendicular direction, but could not increase particle size to the drawing direction.
    So we introduce aligned fibers in polymer matrix instead of dispersed phase, which increase particle size to the refractive index mismatch direction. Both transmittance and polarizing efficiency were drastically improved.
    It was found that the sum of the light intensities in the forward and backward direction approaches unity, which indicates that light losses due to, for instance, absorption are virtually eliminated. In the opaque state, a large portion of the incident light (80 %) is scattered in the backward direction, whereas in the transparent state 90 % of the incident light is transmitted in the forward direction. This feature is especially useful in devices that are constructed to recycle light and that are designed to enhance the efficiency to produce polarized light from natural light.
    Apart from a high efficiency to produce linearly polarized light, the polarizers possess a variety of other potential advantages. In comparison to dichroic polarizers, an enhanced temperature and humidity resistance and an enhanced light stability are expected, which are useful properties in, for instance, projection displays, projection screens, and displays in automotive dashboards.

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  • 大きな双極子モーメントを有する棒状分子における極性液晶構造の形成メカニズム

    Grant number：12750792  2000 - 2001

    日本学術振興会  科学研究費助成事業  奨励研究(A)

    戸木田 雅利

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    Grant amount：\2000000 （ Direct Cost: \2000000 ）

    ヒドロキシ安息香酸とヒドロキシナフトエ酸からなるランダム共重合体(poly(HBA/HNA))は等方液体状態とならない。そこで、ヒドロキシ安息香酸の2位に長鎖アルキル基を導入したポリマーを新たに合成し、その相転移挙動を調査した。その結果、分子量20000程度の試料で等方相-ネマチック-スメクチック相転移を確認した。長鎖アルキル基の効果のために、分子は自発的に配向し、分子軸はガラス基板に対して垂直となることをSHG測定により明らかにした。このポリマーは本研究の当初の目的を達成するものであるが、分子軸方向の自発的配向の効果と極性構造の発現とがSHG測定だけでは切り離して議論できない。反射X線回折法で基盤表面での分子の配向を評価し、SHG測定と組み合わせることで、本研究の目的が達成できる。
    ポリグルタメートおよびポリアスパルテートを高電場下で希薄溶液からキャストしたフィルムのSHG強度偏向角依存性から極性構造の対称性を議論した。その結果、X線回折から求まる2次元格子の対称性と極性構造が対応すること、C6あるいはC4対象性のχテンソルの2つの成分の比がポリペプチドヘリックスの種類(α、ω)で異なることを明らかにした。分子軸(双極子モーメント方向と一致)に垂直に振動するレーザー光を入射したときに分子軸方向に最も強いSHGを発生するという、poly(HBA/HNA)とは全く異なったSHG強度偏向角依存性を示した。超分子分極率に寄与するエネルギーの低い遷移モーメントの方向が分子軸の垂直方向にあるのに対し、超分子分極率テンソルが分子軸方向にあるという量子化学計算の結果で、この現象を理解した。

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  • Development of

    Grant number：11555251  1999 - 2000

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    MIYATA Seizo, KADA Takeshi, TOKITA Masatoshi, XIN LIANG Chuan

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    Grant amount：\13300000 （ Direct Cost: \13300000 ）

    Recently, engineers develop technology and materials for opto-telecommunication, because they will satisfy demands. One of the most important physical properties for the materials is refractive index. Refractive index depends on linear polarizability by the Lorenlz-Lorenz equation. The photochemical reaction which breaks the π-conjugated system can reduce the refractive index of the material because the linear polarizability decreases. The linear, polarizability variations in the nitrone derivatives were predicted by MOPAC calculation. Furthermore, we demonstrate that a photochemical reaction can create various distributions of refractive index in the polymer.
    We prepared the PMMA films containing the nitrone derivatives by spin-coating method. UV irradiation decreased refractive indices of the film exponentially with the irradiation time. The change in the refractive index was large enough to apply to optical devices. Electronic structural change of DMAPN and refractive indices of the film before and after UV irradiation were evaluated by UV absorption spectra and m-line method, respectively. The UV irradiation decreased λ_<max> at 380 nm in the absorption spectra, which is attributed to nitrone, and the refractive indices exponentially with irradiation time. The change of refractive indices reached 0.028. It is shown that the relative variation of refractive index can be predicted based on calculated polarizability variation, in the case of photoisomerization like the reaction of nitrone to oxadirizine.
    The refractive index profile upon depth of the film was investigated by measuring refractive indices of stacked DMAPN/PMMA films. When UV with a power of 10.7 mW/cm^2 irradiated upon three stacked DMAPN/PMMA films for 35 s, variation of the refractive index change showed a quadratic profile. The refractive index profile with various irradiation times can be accounted with the combination of the chemical kinetics with the steady state approximation and Lambert-Beer's law. Thus, the photochemical reaction can be used to control the refractive index distribution in polymer.

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  • Directional organic electroluminescent device based on molecular synchronization phenomena

    Grant number：11167220  1998 - 2002

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research on Priority Areas

    WATANABE Toshiyuki, MIYATA Seizo

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    Grant amount：\49500000 （ Direct Cost: \49500000 ）

    Novel bio-devices, electronics devices, all-optical devices and mechanical actuators based on molecular synchronization are proposed and their unique properties have been analyzed. The directional macroscopic responses are obtained from weak microscopic stimulus according to cascade, domino and resonance effects. The important research results are summarized as follows
    1)Biocompatible polymer alloy membrane for implantable artificial oancreas are developed. This polymer pump was used as an artificial pancreas that spontaneously release insulin in response to the blood glucose level.
    2)Bi-ionic actuator was developed using polypyrrole (PPy) films. PPy films prepared by electrochemical deposition of pyrrole and with various electrolyte like p-phenolsulfonic acid (PPS) and dodecylbenzene sulfonic acid (DBS) are found to show that electrochemical deformation of PPy/PPS film elongates upon oxidation, contrary to that of PPy/DBS film expands by oxidation. In addition, photoresponsive polymer gels having jungle-gym-like structure was synthesized and their photochemical and mechanical properties were investigated. Exposure of the amic acid gel containing azo-benzene moieties in DMF to UV light, which cause trans-cis photo isomerization. induce deflecting of amic acid gel toward to the irradiation direction of the actinic light. When the bent film was irradiated by visible light, which cause cis-trans back isomerization of the azo-benzene moiety, unbending of the amic acid gel immediately took place.
    3)The polymer liquid crystal with azobenzene moiety in the side chain was prepared. It was confirmed from polarized UV absorption that the azobenzene moiety was homeotropically aligined in the film. A linear polarized beam was split into two beams and interfered in the film with crossing angle 180℃. Diffraction efficiency of this film was found to be near 90%.
    4)Phnylethynyl anthracene unit was connected with diarylethene unit through adamantyl unit to control photo-induced modulations of fluorescence emission intensity and wavelength. Single molecule fluorescence imaging was demonstrated with a laser-scanning confocal microscope with a single photon counting detector and an excitaion Ar-ion laser. On-Off digital switching of single molecule fluorescence signals was observed with UV laser irradiation and its average time constant depend linearly with inverse of irradiation light power.
    5)Highly reversible reflectanoe changes corresponding to photochromism or photoinduced electron transfer upon repeated fs laser excitation was demonstrated to fabricate ultra-fast all optical spatial light modulation based on guided mode.

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  • Interaction Between Laser Light and Helical Structure of Chiral Polar Nematic Liquid Crystal

    Grant number：10450360  1998 - 1999

    Japan Society for the Promotion of Science  Grants-in-Aid for Scientific Research  Grant-in-Aid for Scientific Research (B)

    MIYATA Seizo, TOKITA Masatoshi, WATANABE Toshiyuki

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    Grant amount：\16200000 （ Direct Cost: \16200000 ）

    Nd : YAG laser was irradiated to the chiral nematic liquid crystal (LC) of poly(γ-benzyl-L-glutamate) (PBLG) in parallel to the helical axis of the LC. The second harmonic (SH) light was generated in the LC when the optical pitch corresponded to the SH light wavelength. It leads to the significant conclusion that PBLG forms an unusual chiral nematic mesophase that should be designated as "chiral polar nematic LC", which consists of polar nematic lamellae where the dipole moment of molecule as well as the long axis are parallel aligned. The SHG intensity and polarity generated in the LC depended on the polarity of the incident light. When linearly polarized fundamental light was irradiated to the LC, linearly and left circularly polarized SH light were generated. On the other hand, when left circularly fundamental polarized light was irradiated to the LC, right circularly polarized SH light was generated. Right circularly polarized fundamental light did not induce SH light.

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  • 主鎖型高分子強誘電スメクチック液晶のらせん構造による擬似位相整合に関する研究

    Grant number：10750643  1998 - 1999

    日本学術振興会  科学研究費助成事業  奨励研究(A)

    戸木田 雅利

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    Grant amount：\2000000 （ Direct Cost: \2000000 ）

    ビフェニルジカルボン酸をメソゲンとする主鎖型液晶高分子を合成し、強誘電キラルスメクチックC液晶を発現させた。アキラル成分とのランダム共重合体を合成し、その相転移挙動をDSCおよび偏光顕微鏡観察で、強誘電キラルスメクチックC液晶のら戦費値を偏光顕微鏡観察及びCD測定により決定した。その結果、キラル成分のモル比CとピッチPとの関係は、1/P=aCで表せた。つまり、キラル成分のモル分率でキラルスメクチックC液晶のらせんピッチが正確に制御できることが示された。らせん分布帰還型キャビティー効果の報告を参考に、532nmのピッチを有するホメオトロピックモノドメイン試料にNd:YAGレーザー(波長1064nm)をらせん軸に平行に入射したところ、SHGが確認された。また、キラル液晶のらせん構造に着目し、キラルな光である円偏光の基本光を入射したところ、円偏光の掌性と液晶のらせんの掌性との関係とSHG発生の有無及びSHGの偏光特性に相関を認めた。

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  • 高分子液晶・色素ハイブリッドナノ組織体の構築と光機能素子への応用

    Grant number：10126213  1998

    日本学術振興会  科学研究費助成事業  特定領域研究(A)

    渡辺 敏行, 戸木田 雅利, 宮田 清蔵

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    Grant amount：\1800000 （ Direct Cost: \1800000 ）

    我々は、何種類かの剛直な芳香族ポリエステルが、分極処理せずとも2次の非線形光学を示すことを見出した。この高分子はその非対称的な構造から、特に配向した試料においては、その非線形分極が主鎖と平行方向であることを確認した。そこで、我々は芳香族ポリエステルに類似した棒状剛直な高分子としてポリペプチドを取り上げ、その2次の非線形光学特性について検討した。ポリペプチド(PBLG)はコレステリック液晶となっており、らせんピッチと同程度の波長の光を選択反射する性質がある。そこで、この液晶を一種のグレーティングと考え、内部共振器型の波長変換素子を作製した。溶媒の蒸発条件を制御して、らせんピッチの分布が形成されているフィルムを作製し、そのフィルムに垂直にNd:YAGレーザーを照射し、試料を移動することにより異なるらせんピッチに対応するSHG強度を測定した。丁度SHGの波長(532nm)に対応するらせんピッチが液晶中に形成された場所にYAGレーザーを照射すると、自己組織型共振器内でSH光の電界強度分布が増大するために変換効率が飛躍的に増加することが判明した。しかし、SH光とらせんピッチが一致しない場合は、らせん構造によって非線形分極がキャンセルされるために明確なSH光は観察できなかった。温度によりらせんピッチが変化するサーモトロピック液晶、ポリ(γ-ベンジル-ドデシル-L-グルタメート)(PBDoLG)を合成した。SHGの波長532nmと同程度のピッチを有している温度、約141.3℃でSHG強度の増大が得られた。

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  • control of morphology of polymer solid using liquid crystallization process

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    Grant type：Competitive

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  • Liquid crystalline elastomer

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    Grant type：Competitive

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  • shear orientation behavior and morphology of polymer liquid crystal

    Grant-in-Aid for Scientific Research 

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    Grant type：Competitive

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  • 液晶化過程を利用した高分子固体のモルフォロジー制御

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    Grant type：Competitive

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  • 液晶エラストマー

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    Grant type：Competitive

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  • 高分子液晶の構造とせん断流動配向挙動

    科学研究費補助金 

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    Grant type：Competitive

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