1D Silver Organochalcogenide Semiconductors: Color Tunable Luminescence, Polarized Emission, and Long-Range Exciton Diffusion

Tomoaki Sakurada, Nithin Pathoor, Takuma Matsumoto, Rattapon Khamlue, Petcharaphorn Chatsiri, Jan Valenta, Tadashi Kawamoto, Shun Omagari, William A. Tisdale, Watcharaphol Paritmongkol, Yeongsu Cho, Martin Vacha

Journal of the American Chemical Society   2025.10

Chelation-Driven Dissolution and Single-Crystal Growth of Hybrid Metal Organochalcogenide Semiconductors by Polydentate Amines

Rattapon Khamlue, Petcharaphorn Chatsiri, Tomoaki Sakurada, Jesadaporn Chotimook, Pimpan Leangtanom, Pongkamon Prayongkul, Thassanant Atithep, Jintara Padchasri, Pinit Kidkhunthod, Martin Vacha, Pichaya Pattanasattayavong, Watcharaphol Paritmongkol

Journal of the American Chemical Society   2025.10

Luminescence Variability of CsPbBr3 Nanocrystals in Single-Particle Emitter Applications

Shun Omagari, Eisuke Hirao, Martin Vacha

ACS Applied Nano Materials   2025.8

Vortex-Flow-Directed Chiral Macroscopic Ordering of Platelet Nanostructures Formed via the Supramolecular Assembly of Platinum Complexes with Bis(phenylisoxazolyl)benzene

Masaya Yoshida, Kyota Yasuda, Takuma Matsumoto, Yudai Ono, Naoyuki Hisano, Mao Kawasaki, Takehiro Hirao, Ye Yuan, Shin-ichi Tate, Martin Vacha, Takeharu Haino

Journal of the American Chemical Society   2025.8

Anisotropic Cation Migration Drives the Formation and Stability of Lateral 3D/2D Perovskite Heterostructures

Xiayan Wu, Shun Omagari, Martin Vacha

ACS Energy Letters   2025.7

Unveiling the Local Fate of Charge Carriers in Halide Perovskite Thin Films via Correlation Clustering Imaging

Sudipta Seth, Boris Louis, Koki Asano, Toon Van Roy, Maarten B. J. Roeffaers, Elke Debroye, Ivan G. Scheblykin, Martin Vacha, Johan Hofkens

Chemical & Biomedical Imaging   2025.4

Real-Time Structural Dynamics at the 3D/2D Perovskite Interface in CsPbBr3/PEA2PbBr4 Nano-heterostructures

Xiayan Wu, Nithin Pathoor, Xin Xu, Shun Omagari, Toranosuke Takagi, Martin Vacha

Nano Letters   2025.1

Small Au Nanoparticles Synthesized by Peptide-Based Biomineralization for Catalytic Applications

Masayoshi Tanaka, Yuka Kiriki, Nozomi Kiyohara, Mirei Hayashi, Abiral Tamang, Tomonori Nakamura, Martin Vacha, Yonghyun Choi, Jonghoon Choi, Wataru Yoshida, Kevin Critchley, Stephen D. Evans, Mina Okochi

ACS Applied Nano Materials   2024.5

Spectrally Selective Leakage of Light from Self-Assembled Supramolecular Nanofiber Waveguides Induced by Surface Plasmon Polaritons

Qiwen Tan, Nao Koishihara, Shun Omagari, Takehiro Hirao, Takeharu Haino, Martin Vacha

The Journal of Physical Chemistry C   128 ( 10 )   4295 - 4302   2024.3

Resolving Multi-Asperity Contacts at the Nanoscale through Super-Resolution Fluorescence Imaging

Begüm Demirkurt, Dina Petrova, Dharmendar Kumar Sharma, Martin Vacha, Bart Weber, Daniel Bonn, Albert M. Brouwer

The Journal of Physical Chemistry Letters   2024.2

Impact of Ring-Closing on the Photophysical Properties of One-Dimensional π-Conjugated Molecular Aggregate

Sho Takahashi, Takuma Matsumoto, Martin J. Hollamby, Hiroshi Miyasaka, Martin Vacha, Hikaru Sotome, Shiki Yagai

Journal of the American Chemical Society   2024.1

In Situ Monitoring of Nanocrystal Formation and Ion Migration in Lead Halide Perovskite Metal–Organic Framework Composites

Xiayan Wu, Shun Omagari, Jinwei Gao, Martin Vacha

Advanced Optical Materials   2024.1

Simultaneous Force and Fluorescence Spectroscopy on Single Chains of Polyfluorene: Effect of Intra-Chain Aggregate Coupling

Tomonori Nakamura, Shun Omagari, Xiaobin Liang, Qiwen Tan, Ken Nakajima, Martin Vacha

ACS Nano   17 ( 9 )   8074 - 8082   2023.4

Suppression of blinking in single CsPbBr₃ perovskite nanocrystals through surface ligand exchange

Toranosuke Takagi, Shun Omagari, Martin Vacha

Physical Chemistry Chemical Physics   25 ( 28 )   19004 - 19012   2023

Air-stable mixed cation lead halide perovskite films and microscopic study of their degradation process

Anubha Agarwal, Shun Omagari, Martin Vacha

Nanoscale   15 ( 25 )   10642 - 10650   2023

Nanoscale Structural Heterogeneity and Efficient Intergrain Charge Diffusion in a Series of Mixed MA/FA Halide Perovskite Films

Anubha Agarwal, Shun Omagari, Martin Vacha

ACS Energy Letters   7 ( 8 )   2443 - 2449   2022.8

Dynamic molecular conformational change leading to energy transfer in F8-5% BSP copolymer revealed by single-molecule spectroscopy

Hao Yan, Tzu-Wei Tseng, Shun Omagari, Iain Hamilton, Tomonori Nakamura, Martin Vacha, Ji-Seon Kim

The Journal of Chemical Physics   156 ( 7 )   074704 - 074704   2022.2

Real-time molecular-level visualization of mass flow during patterned photopolymerization of liquid-crystalline monomers

Keisuke Ueda, Miho Aizawa, Atsushi Shishido, Martin Vacha

NPG Asia Materials   13 ( 1 )   2021.12

Dynamic Polymer Free Volume Monitored by Single-Molecule Spectroscopy of a Dual Fluorescent Flapping Dopant

Yuma Goto, Shun Omagari, Ryuma Sato, Takuya Yamakado, Ryo Achiwa, Nilanjan Dey, Kensuke Suga, Martin Vacha, Shohei Saito

Journal of the American Chemical Society   2021.8

Excitonic coupling directly revealed on single chains of polyfluorene by combined force spectroscopy and fluorescence microscopy

Tomonori Nakamura, Shun Omagari, Xiaobin Liang, Ken Nakajima, Martin Vacha

2021.8

Enhancement of the Photocurrent of a Single Photosystem I Complex by the Localized Plasmon of a Gold Nanorod

Ryotaro Furuya, Shun Omagari, Qiwen Tan, Heiko Lokstein, Martin Vacha

Journal of the American Chemical Society   143 ( 33 )   13167 - 13174   2021.8

Real-Time Monitoring of Formation and Dynamics of Intra- and Interchain Phases in Single Molecules of Polyfluorene

Tzu-Wei Tseng, Hao Yan, Tomonori Nakamura, Shun Omagari, Ji-Seon Kim, Martin Vacha

ACS Nano   14 ( 11 )   16096 - 16104   2020.10

Energy localization vs. charge funneling in aggregates of CsPbBr3 perovskite nanocrystals

Dharmendar Kumar Sharma, Shuzo Hirata, Martin Vacha

Journal of Luminescence   222   117119 - 117119   2020.6

Mechanically Induced Conformation Change, Fluorescence Modulation, and Mechanically Assisted Photodegradation in Single Nanoparticles of the Conjugated Polymer Poly(9,9-dioctylfluorene)

Tomonori Nakamura, Martin Vacha

The Journal of Physical Chemistry Letters   11 ( 8 )   3103 - 3110   2020.4

Ageing of Polymer Frictional Interfaces: The Role of Quantity and Quality of Contact

D. Petrova, D. K. Sharma, M. Vacha, D. Bonn, A. M. Brouwer, B. Weber

ACS Applied Materials & Interfaces   12 ( 8 )   9890 - 9895   2020.2

Toward accurate measurement of the intrinsic quantum yield of lanthanide complexes with back energy transfer

Shun Omagari, Martin Vacha

Physical Chemistry Chemical Physics   22 ( 6 )   3683 - 3690   2020

Toxicity of nanomaterials due to photochemical degradation and the release of heavy metal ions

Jeladhara Sobhanan, Philip Jones, Reiko Kohara, Sakiko Sugino, Martin Vacha, Challapally Subrahmanyam, Yuta Takano, Fred Lacy, Vasudevanpillai Biju

Nanoscale   12 ( 43 )   22049 - 22058   2020

Single-particle electroluminescence of CsPbBr3 perovskite nanocrystals reveals particle-selective recombination and blinking as key efficiency factors

Dharmendar Kumar Sharma, Shuzo Hirata, Martin Vacha

Nature Communications   10 ( 1 )   2019.12

Suppressed Triplet Exciton Diffusion Due to Small Orbital Overlap as a Key Design Factor for Ultralong-Lived Room-Temperature Phosphorescence in Molecular Crystals

Kaishi Narushima, Yasuhiro Kiyota, Takehiko Mori, Shuzo Hirata, Martin Vacha

Advanced Materials   31 ( 10 )   1807268 - 1807268   2019.3

Stark Effect and Environment-Induced Modulation of Emission in Single Halide Perovskite Nanocrystals

Dharmendar Kumar Sharma, Shuzo Hirata, Vasudevanpillai Biju, Martin Vacha

ACS Nano   13 ( 1 )   624 - 632   2019.1

A colorless semi-aromatic polyimide derived from a sterically hindered bromine-substituted dianhydride exhibiting dual fluorescence and phosphorescence emission

Kenta Kanosue, Shuzo Hirata, Martin Vacha, Ramūnas Augulis, Vidmantas Gulbinas, Ryohei Ishige, Shinji Ando

Materials Chemistry Frontiers   3 ( 1 )   39 - 49   2019

Photoinduced photoluminescence enhancement in self-assembled clusters of formamidinium lead bromide perovskite nanocrystals

Sushant Ghimire, Vijayakumar C. Nair, Chinnadurai Muthu, Ken-ichi Yuyama, Martin Vacha, Vasudevanpillai Biju

Nanoscale   11 ( 19 )   9335 - 9340   2019

Wavelength-Tunable Band-Edge Photoluminescence of Nonstoichiometric Ag-In-S Nanoparticles via Ga ³⁺ Doping

Tatsuya Kameyama, Marino Kishi, Chie Miyamae, Dharmendar Kumar Sharma, Shuzo Hirata, Takahisa Yamamoto, Taro Uematsu, Martin Vacha, Susumu Kuwabata, Tsukasa Torimoto

ACS Applied Materials and Interfaces   10 ( 49 )   42844 - 42855   2018.12

Identification of Short- and Long-Wavelength Emitting Chlorophylls in Cyanobacterial Photosystem I by Plasmon-Enhanced Single-Particle Spectroscopy at Room Temperature

Soya Hatazaki, Dharmendar Kumar Sharma, Shuzo Hirata, Keiji Nose, Tomokazu Iyoda, Adrian Kölsch, Heiko Lokstein, Martin Vacha

The Journal of Physical Chemistry Letters   9 ( 22 )   6669 - 6675   2018.11

Efficient triplet-triplet annihilation upconversion in binary crystalline solids fabricated via solution casting and operated in air (vol 4, pg 83, 2017) Reviewed

Kamada Kenji, Sakagami Yusuke, Mizokuro Toshiko, Fujiwara Yutaka, Kobayashi Kenji, Narushima Kaishi, Hirata Shuzo, Vacha Martin

MATERIALS HORIZONS   5 ( 6 )   1219 - 1219   2018.11

Photophysics and electroluminescence of single nanocrystals of halide perovskites and related nanomaterials

Martin Vacha, Dharmendar Kumar Sharma

EPJ Web of Conferences   190   2018.9

Single-molecule studies beyond optical imaging: Multi-parameter single-molecule spectroscopy Reviewed

Vacha, Martin, Sharma, Dharmendar Kumar, Hirata, Shuzo

Journal of Photochemistry and Photobiology C-Photochemistry Reviews   34   121 - 136   2018

Macrocyclic poly(p-phenylenevinylene)s by ring expansion metathesis polymerisation and their characterisation by single-molecule spectroscopy Reviewed

Lidster, Benjamin John, Hirata, Shuzo, Matsuda, Shoki, Yamamoto, Takuya, Komanduri, Venukrishnan, Kumar, Dharam Raj, Tezuka, Yasuyuki, Vacha, Martin, Turner, Michael L.

Chemical Science   9 ( 11 )   2934 - 2941   2018

Narrow band-edge photoluminescence from AglnS(2) semiconductor nanoparticles by the formation of amorphous III-VI semiconductor shells Reviewed

Uematsu, T., Wajima, K., Sharma, D. K., Hirata, S., Yamamoto, T., Kameyama, T., Vacha, M., Torimoto, T., Kuwabata, S.

Npg Asia Materials   10   713 - 726   2018

Intrachain Aggregates as the Origin of Green Emission in Polyfluorene Studied on Ensemble and Single-Chain Level Reviewed

Nakamura, Tomonori, Sharma, Dharmendar Kumar, Hirata, Shuzo, Vacha, Martin

Journal of Physical Chemistry C   122 ( 15 )   8137 - 8146   2018

Excited State Behavior of Single Strand and Bulk P3HT in Contact with a Au-Nanowire Array Reviewed

Liu, Mengdi, Hirata, Shuzo, Iyoda, Tomokazu, Vacha, Martin, Piotrowiak, Piotr

Journal of Physical Chemistry C   122 ( 14 )   7925 - 7933   2018

Plasmonic sphere-on-plane systems with semiconducting polymer spacer layers Reviewed

Yu, Binxing, Tracey, Jill I., Cheng, Zhongkai, Vacha, Martin, O'Carroll, Deirdre M.

Physical Chemistry Chemical Physics   20 ( 17 )   11749 - 11757   2018

Efficient triplet-triplet annihilation upconversion in binary crystalline solids fabricated via solution casting and operated in air Reviewed

Kamada, Kenji, Sakagami, Yusuke, Mizokuro, Toshiko, Fujiwara, Yutaka, Kobayashi, Kenji, Narushima, Kaishi, Hirata, Shuzo, Vacha, Martin

Materials Horizons   4 ( 1 )   83 - 87   2017

Influence of Zn on the photoluminescence of colloidal (AgIn)(x)Zn2(1-x) S-2 nanocrystals Reviewed

Sharma, Dharmendar Kumar, Hirata, Shuzo, Bujak, Lukasz, Biju, Vasudevanpillai, Kameyama, Tatsuya, Kishi, Marino, Torimoto, Tsukasa, Vacha, Martin

Physical Chemistry Chemical Physics   19 ( 5 )   3963 - 3969   2017

White Afterglow Room-Temperature Emission from an Isolated Single Aromatic Unit under Ambient Condition Reviewed

Hirata, Shuzo, Vacha, Martin

Advanced Optical Materials   5 ( 5 )   2017

Nanoscale triplet exciton diffusion via imaging of up-conversion emission from single hybrid nanoparticles in molecular crystals Reviewed

Narushima, Kaishi, Hirata, Shuzo, Vacha, Martin

Nanoscale   9 ( 30 )   10653 - 10661   2017

Large Reverse Saturable Absorption at the Sunlight Power Level Using the Ultralong Lifetime of Triplet Excitons Reviewed

Hirata, Shuzo, Vacha, Martin

Journal of Physical Chemistry Letters   8 ( 15 )   3683 - 3689   2017

Selective turn-on and modulation of resonant energy transfer in single plasmonic hybrid nanostructures Reviewed

Bujak, Lukasz, Ishii, Tatsuya, Sharma, Dharmendar Kumar, Hirata, Shuzo, Vacha, Martin

Nanoscale   9 ( 4 )   1511 - 1519   2017

Plasmon Enhancement of Triplet Exciton Diffusion Revealed by Nanoscale Imaging of Photochemical Fluorescence Upconversion Reviewed

Bujak, Lukasz, Narushima, Kaishi, Sharma, Dharmendar Kumar, Hirata, Shuzo, Vacha, Martin

Journal of Physical Chemistry C   121 ( 45 )   25479 - 25486   2017

Latest impact factor

Martin Vacha, Jong-Hyun Ahn, Vasudevan Pillai Biju, Tomoyasu Taniyama, Ikuyoshi Tomita, Shutao Wang, Jihui Yang

NPG Asia Materials   8 ( 7 )   e290 - e290   2016.7

Large Transmittance Change Induced by Exciton Accumulation under Weak Continuous Photoexcitation Reviewed

Hirata, Shuzo, Vacha, Martin

Advanced Optical Materials   4 ( 2 )   297 - 305   2016

Circularly Polarized Persistent Room-Temperature Phosphorescence from Metal-Free Chiral Aromatics in Air Reviewed

Hirata, Shuzo, Vacha, Martin

Journal of Physical Chemistry Letters   7 ( 8 )   1539 - 1545   2016

Single-particle spectroscopy of I-III-VI semiconductor nanocrystals: spectral diffusion and suppression of blinking by two-color excitation Reviewed

Sharma, Dharmendar Kumar, Hirata, Shuzo, Bujak, Lukasz, Biju, Vasudevanpillai, Kameyama, Tatsuya, Kishi, Marino, Torimoto, Tsukasa, Vacha, Martin

Nanoscale   8 ( 28 )   13687 - 13694   2016

Thermally activated delayed fluorescence with circularly polarized luminescence characteristics Reviewed

Imagawa, Takuro, Hirata, Shuzo, Totani, Kenro, Watanabe, Toshiyuki, Vacha, Martin

Chemical Communications   51 ( 68 )   13268 - 13271   2015

Long-lived Triplet Excitons Allowed by Intermolecular Hydrogen Bonding in Amorphous Matrix Reviewed

Tsubomoto, Yuichiro, Hirata, Shuzo, Totani, Kenro, Vacha, Martin, Watanabe, Toshiyuki

Journal of Photopolymer Science and Technology   28 ( 4 )   573 - 577   2015

Position-Dependent Three-Dimensional Diffusion in Nematic Liquid Crystal Monitored by Single-Particle Fluorescence Localization and Tracking Reviewed

Lee, Seonik, Noda, Koushi, Hirata, Shuzo, Vacha, Martin

Journal of Physical Chemistry Letters   6 ( 8 )   1403 - 1407   2015

Photoreversible On-Off Recording of Persistent Room-Temperature Phosphorescence Reviewed

Katsurada, Yuki, Hirata, Shuzo, Totani, Kenro, Watanabe, Toshiyuki, Vacha, Martin

Advanced Optical Materials   3 ( 12 )   1726 - 1737   2015

1-, 3-, 6-, and 8-Tetrasubstituted Asymmetric Pyrene Derivatives with Electron Donors and Acceptors: High Photostability and Regioisomer-Specific Photophysical Properties Reviewed

Niko, Yosuke, Sasaki, Shunsuke, Narushima, Kaishi, Sharma, Dharmendar Kumar, Vacha, Martin, Konishi, Gen-ichi

Journal of Organic Chemistry   80 ( 21 )   10794 - 10805   2015

Super-resolution localization microscopy reveals nanoscale dynamics of polymers and soft matter Reviewed

Hirata S, Ito S, Vacha M, Miyasaka H

Kobunshi   64 ( 9 )   575 - 577   2015

Editorial for 2015 Reviewed

Vacha, Martin, Jiang, Lei

Npg Asia Materials   7   2015

Single-molecule electroluminescence and photoluminescence of polyfluorene unveils the photophysics behind the green emission band Reviewed

Honmou, Yoshihiro, Hirata, Shuzo, Komiyama, Hideaki, Hiyoshi, Junya, Kawauchi, Susumu, Iyoda, Tomokazu, Vacha, Martin

Nature Communications   5   2014

Bacteriochlorophyll Aggregates Self-Assembled on Functionalized Gold Nanorod Cores as Mimics of Photosynthetic Chlorosomal Antennae: A Single Molecule Study Reviewed

Furumaki, Shu, Vacha, Frantisek, Hirata, Shuzo, Vacha, Martin

Acs Nano   8 ( 3 )   2176 - 2182   2014

Relationship between room temperature phosphorescence and deuteration position in a purely aromatic compound Reviewed

Hirata, S., Totani, K., Watanabe, T., Kaji, H., Vacha, M.

Chemical Physics Letters   591   119 - 125   2014

Large reverse saturable absorption under weak continuous incoherent light Reviewed

Hirata, Shuzo, Totani, Kenro, Yamashita, Takashi, Adachi, Chihaya, Vacha, Martin

Nature Materials   13 ( 10 )   938 - 946   2014

Circularly polarized luminescence from individual microstructures of conjugated polymer aggregates with solvent-induced chirality Reviewed

Katayama, Kenta, Hirata, Shuzo, Vacha, Martin

Physical Chemistry Chemical Physics   16 ( 33 )   17983 - 17987   2014

Energy Transfer: Thermoresponsive Persistent Phosphorescent Color Change Using Efficient Thermally Activated Reverse Energy Transfer with a Large Energy Difference (Advanced Optical Materials 4/2013) Reviewed

Kenro Totani, Yuya Okada, Shuzo Hirata, Martin Vacha, Toshiyuki Watanabe

Advanced Optical Materials   1 ( 4 )   282 - 282   2013.4

Thermoresponsive Persistent Phosphorescent Color Change Using Efficient Thermally Activated Reverse Energy Transfer with a Large Energy Difference Reviewed

Totani, Kenro, Okada, Yuya, Hirata, Shuzo, Vacha, Martin, Watanabe, Toshiyuki

Advanced Optical Materials   1 ( 4 )   283 - 288   2013

Conjugated Polymer Chains Confined in Vertical Nanocylinders of a Block-Copolymer Film: Preparation, Characterization, and Optoelectronic Function Reviewed

Dong, Ban Xuan, Honmou, Yoshihiro, Komiyama, Hideaki, Furumaki, Shu, Iyoda, Tomokazu, Vacha, Martin

Macromolecular Rapid Communications   34 ( 6 )   492 - 497   2013

Reversible Thermal Recording Media Using Time-Dependent Persistent Room Temperature Phosphorescence Reviewed

Hirata, Shuzo, Totani, Kenro, Kaji, Hironori, Vacha, Martin, Watanabe, Toshiyuki, Adachi, Chihaya

Advanced Optical Materials   1 ( 6 )   438 - 442   2013

Mechanical Manipulation of Photophysical Properties of Single Conjugated Polymer Nanoparticles Reviewed

Kobayashi, Hiroyuki, Hirata, Shuzo, Vacha, Martin

Journal of Physical Chemistry Letters   4 ( 15 )   2591 - 2596   2013

Super-resolution fluorescence imaging of nanoimprinted polymer patterns by selective fluorophore adsorption combined with redox switching Reviewed

Yabiku, Yu, Kubo, Shoichi, Nakagawa, Masaru, Vacha, Martin, Habuchi, Satoshi

Aip Advances   3 ( 10 )   2013

Single-Molecule Study on Polymer Diffusion in a Melt State: Effect of Chain Topology Reviewed

Habuchi, Satoshi, Fujiwara, Susumu, Yamamoto, Takuya, Vacha, Martin, Tezuka, Yasuyuki

Analytical Chemistry   85 ( 15 )   7369 - 7376   2013

Topology dependent diffusion in polymer melts revealed by a single-molecule study Reviewed

Habuchi, Satoshi, Fujiwara, Susumu, Yamamoto, Takuya, Vacha, Martin, Tezuka, Yasuyuki

Abstracts of Papers of the American Chemical Society   245   2013

Circular Dichroism Measured on Single Chlorosomal Light-Harvesting Complexes of Green Photosynthetic Bacteria Reviewed

Furumaki, Shu, Yabiku, Yu, Habuchi, Satoshi, Tsukatani, Yusuke, Bryant, Donald A., Vacha, Martin

Journal of Physical Chemistry Letters   3 ( 23 )   3545 - 3549   2012

Relaxation in Thin Polymer Films Mapped across the Film Thickness by Astigmatic Single-Molecule Imaging Reviewed

Oba, Tatsuya, Vacha, Martin

Acs Macro Letters   1 ( 6 )   784 - 788   2012

Excitonic Coupling in Linear and Trefoil Trimer Perylenediimide Molecules Probed by Single-Molecule Spectroscopy Reviewed

Yoo, Hyejin, Furumaki, Shu, Yang, Jaesung, Lee, Ji-Eun, Chung, Heejae, Oba, Tatsuya, Kobayashi, Hiroyuki, Rybtchinski, Boris, Wilson, Thea M., Wasielewski, Michael R., Vacha, Martin, Kim, Dongho

Journal of Physical Chemistry B   116 ( 42 )   12878 - 12886   2012

Spectral multitude and spectral dynamics reflect changing conjugation length in single molecules of oligophenylenevinylenes Reviewed

Kobayashi, Hiroyuki, Tsuchiya, Kousuke, Ogino, Kenji, Vacha, Martin

Physical Chemistry Chemical Physics   14 ( 29 )   10114 - 10118   2012

A single-molecule approach to conformation and photophysics of conjugated polymers Reviewed

Kobayashi, Hiroyuki, Onda, Suguru, Furumaki, Shu, Habuchi, Satoshi, Vacha, Martin

Chemical Physics Letters   528   1 - 6   2012

A new phase at NPG Asia Materials Reviewed

Vacha, Martin

Npg Asia Materials   4   2012

Blinking of single dye molecules in a polymer matrix is correlated with free volume in polymers Reviewed

Suzuki, Kouta, Habuchi, Satoshi, Vacha, Martin

Chemical Physics Letters   505 ( 4-6 )   157 - 160   2011

Absorption Linear Dichroism Measured Directly on a Single Light-Harvesting System: The Role of Disorder in Chlorosomes of Green Photosynthetic Bacteria Reviewed

Furumaki, Shu, Vacha, Frantisek, Habuchi, Satoshi, Tsukatani, Yusuke, Bryant, Donald A., Vacha, Martin

Journal of the American Chemical Society   133 ( 17 )   6703 - 6710   2011

Control of orientation of rhodamine 6G in organic-inorganic hybrid film by capillary electrophoresis doping technique Reviewed

Taguchi, Jun, Yano, Tetsuji, Habuchi, Satoshi, Vacha, Martin, Shibata, Shuichi

Thin Solid Films   519 ( 18 )   6106 - 6109   2011

Complete Suppression of Blinking and Reduced Photobleaching in Single MEH-PPV Chains in Solution Reviewed

Onda, Suguru, Kobayashi, Hiroyuki, Hatano, Tatsuhiko, Furumaki, Shu, Habuchi, Satoshi, Vacha, Martin

Journal of Physical Chemistry Letters   2 ( 21 )   2827 - 2831   2011

Multi-beam single-molecule defocused fluorescence imaging reveals local anisotropic nature of polymer thin films Reviewed

Habuchi, Satoshi, Oba, Tatsuya, Vacha, Martin

Physical Chemistry Chemical Physics   13 ( 15 )   7001 - 7007   2011

Molecular weight dependence of emission intensity and emitting sites distribution within single conjugated polymer molecules Reviewed

Habuchi, Satoshi, Onda, Suguru, Vacha, Martin

Physical Chemistry Chemical Physics   13 ( 5 )   1743 - 1753   2011

Twist Angle Plays an Important Role in Photophysical Properties of a Donor-Acceptor-Type Conjugated Polymer: A Combined Ensemble and Single-Molecule Study Reviewed

Habuchi, Satoshi, Fujita, Hiroyuki, Michinobu, Tsuyoshi, Vacha, Martin

Journal of Physical Chemistry B   115 ( 49 )   14404 - 14415   2011

Nanoscale dynamic inhomogeneities in electroluminescence of conjugated polymers Reviewed

Hatano, Tatsuhiko, Nozue, Shuho, Habuchi, Satoshi, Vacha, Martin

Journal of Applied Physics   110 ( 5 )   2011

Multimode Diffusion of Ring Polymer Molecules Revealed by a Single-Molecule Study

Habuchi, Satoshi, Satoh, Norihiro, Yamamoto, Takuya, Tezuka, Yasuyuki, Vacha, Martin

Angewandte Chemie-International Edition   49 ( 8 )   1418 - 1421   2010

Conformation and physics of polymer chains: a single-molecule perspective Reviewed

Vacha, Martin, Habuchi, Satoshi

Npg Asia Materials   2 ( 4 )   134 - 142   2010

Fluorescence-detected three-dimensional linear dichroism: A method to determine absorption anisotropy in single sub-wavelength size nanoparticles Reviewed

Furumaki, Shu, Habuchi, Satoshi, Vacha, Martin

Chemical Physics Letters   487 ( 4-6 )   312 - 314   2010

Investigation of Quenching Mechanism in Thermoreversible Fluorescent Recording Materials of Fluorescence Using Thermochromic Fluorescence Resonance Energy Transfer Reviewed

Hirata, Shuzo, Vacha, Martin, Watanabe, Toshiyuki

Japanese Journal of Applied Physics   49 ( 5 )   2010

Single-Molecule Electroluminescence of a Phosphorescent Organometallic Complex

Sekiguchi, Yasuhiro, Habuchi, Satoshi, Vacha, Martin

Chemphyschem   10 ( 8 )   1195 - 1198   2009

Conformation-dependent Room-temperature Emission Spectra of Single MEH-PPV Chains in Different Polymer Matrices

Ebihara, Yohei, Habuchi, Satoshi, Vacha, Martin

Chemistry Letters   38 ( 11 )   1094 - 1095   2009

Single-molecule Imaging with an Inexpensive UV-LED Light Source

Hattori, Akifumi, Habuchi, Satoshi, Vacha, Martin

Chemistry Letters   38 ( 3 )   234 - 235   2009

Conformation-Related Exciton Localization and Charge-Pair Formation in Polythiophenes: Ensemble and Single-Molecule Study

Sugimoto, Toshikazu, Habuchi, Satoshi, Ogino, Kenji, Vacha, Martin

Journal of Physical Chemistry B   113 ( 36 )   12220 - 12226   2009

Nanoscale heterogeneity and light-emission dynamics in solution-processed phosphorescent organic light-emitting devices

Sekiguchi, Yasuhiro, Habuchi, Satoshi, Vacha, Martin

Physical Chemistry Chemical Physics   11 ( 39 )   8684 - 8688   2009

Mapping the emitting sites within a single conjugated polymer molecule

Habuchi, Satoshi, Onda, Suguru, Vacha, Martin

Chemical Communications   ( 32 )   4868 - 4870   2009

Relating conformation and photophysics in single MEH-PPV chains

Ebihara, Yohei, Vacha, Martin

Journal of Physical Chemistry B   112 ( 40 )   12575 - 12578   2008

Super-resolution via iterative phase retrieval for blurred and saturated biological images Reviewed

Gur, Eran, Sarafis, Vassilios, Falat, Igor, Vacha, Frantisek, Vacha, Martin, Zalevsky, Zeev

Optics Express   16 ( 11 )   7894 - 7903   2008

Effect of ligands in two-photon excited luminescence of organometallic iridium complexes

Sekiguchi, Yasuhiro, Yamashita, Takashi, Vacha, Martin

Journal of Luminescence   128 ( 5-6 )   848 - 850   2008

Structure-dependent photophysics studied in single molecules of polythiophene derivatives

Sugimoto, Toshikazu, Ebihara, Yohei, Ogino, Kenji, Vacha, Martin

Chemphyschem   8 ( 11 )   1623 - 1628   2007

Prenaration of polymers having hole and electron transport units by Friedel-Crafts reaction

Washizu, Takashi, Pei, Yuanfu, Ha, Jaekook, Vacha, Martin, Tani, Kuniko, Ogino, Kenji, Sato, Hisaya

Journal of Polymer Science Part a-Polymer Chemistry   45 ( 14 )   3083 - 3089   2007

On the origin of excimer emission in electroluminescence and photoluminescence spectra of polyfluorenes

Vacha, Martin, Ha, Jaekook, Sato, Hisaya

Journal of Luminescence   122   620 - 622   2007

Microscale polarity in polymer films probed by fluorescence of a benzanthrone derivative on ensemble and single-molecule level

Hattori, Akifumi, Sato, Hisaya, Vacha, Martin

Chemical Physics Letters   435 ( 4-6 )   311 - 316   2007

Identification of Photosystem I and Photosystem II enriched regions of thylakoid membrane by optical microimaging of cryo-fluorescence emission spectra and of variable fluorescence Reviewed

Vacha, F., Sarafis, V., Benediktyova, Z., Bumba, L., Valenta, J., Vacha, M., Sheue, Ch R., Nedbal, L.

Micron   38 ( 2 )   170 - 175   2007

Towards single-molecule detection of intramolecular exciplexes: Photophysics of a benzanthrone derivative

Hattori, Akifumi, Sato, Hisaya, Vacha, Martin

Journal of Luminescence   122   256 - 258   2007

Spatial location of photosystem pigment-protein complexes in thylakoid membranes of chloroplasts of Pisum sativum studied by chlorophyll fluorescence Reviewed

Vacha, F., Adamec, F., Valenta, J., Vacha, M.

Journal of Luminescence   122   301 - 303   2007

Synthesis and characterization of a novel electroluminescent polymer based on phenoxazine and fluorene derivatives

Yuanfu, Pei, Otake, Masahisa, Vacha, Martin, Sato, Hisaya

Reactive & Functional Polymers   67 ( 11 )   1211 - 1217   2007

Degradation of aliphatic polyesters by vacuum ultraviolet irradiation

Li, Y. B., Hayashi, A., Saito, M., Vacha, M., Murase, S., Sato, H.

Polymer Journal   38 ( 4 )   395 - 399   2006

Synthesis and characterization of a novel electroluminescent polymer based on a phenoxazine derivative Reviewed

Ito, Yuichi, Shimada, Takahiro, Ha, Jaekook, Vacha, Martin, Sato, Hisaya

Journal of Polymer Science Part a-Polymer Chemistry   44 ( 14 )   4338 - 4345   2006

Simultaneous two-photon excited fluorescence and one-photon excited phosphorescence from single molecules of an organometallic complex Ir(ppy)(3) Reviewed

Koide, Yohei, Takahashi, Susumu, Vacha, Martin

Journal of the American Chemical Society   128 ( 34 )   10990 - 10991   2006

A method for determining the absorption ellipsoid of single conjugated polymer molecules and single luminescent nanoparticles

Ebihara, Y., Vacha, M.

Journal of Chemical Physics   123 ( 24 )   244710   2005

Excimer emission in electroluminescence and photoluminescence of polyfluorene derivatives: Effects of local heating and exciton density

Vacha, M., Ha, J., Ito, Y., Shimada, T., Mo Son, J., Sato, H.

Journal of Applied Physics   97 ( 2 )   023514   2005

Microscopy and single molecule detection in photosynthesis

Vacha, F., Bumba, L., Kaftan, D., Vacha, M.

Micron   36 ( 6 )   483 - 502   2005

Electrical properties of composites of TiO2-triphenylamine derivatives

Hayashi, K., Kurosaka, Y., Osako, Y., Ha, J., Vacha, M., Sato, H.

Thin Solid Films   474 ( 1-2 )   337 - 340   2005

Photobleaching and single molecule detection of a phosphorescent organometallic iridium(III) complex

Vacha, M., Koide, Y., Kotani, M., Sato, H.

Journal of Luminescence   107 ( 1-4 )   51 - 56   2004

Single molecule detection and photobleaching study of a phosphorescent dye: organometallic iridium(III) complex

Vacha, M., Koide, Y., Kotani, M., Sato, H.

Chemical Physics Letters   388 ( 4-6 )   263 - 268   2004

Synthesis and characterization of novel light-emitting copolymers containing triphenylamine derivatives

Ha, J., Vacha, M., Khanchaitit, P., Ath-Ong, D., Lee, S. H., Ogino, K., Sato, H.

Synthetic Metals   144 ( 2 )   151 - 158   2004

Comment on "A new method for determining dipole moment orientation of single molecules" (vol 21, pg 843, 2004) Reviewed

Vacha, M., Kotani, M.

Chinese Physics Letters   21 ( 12 )   2555 - 2555   2004

Novel implementations in mesoscopic-structured excitonic systems: CdSe/ZnS/TOPO nanocrystals and molecular J-aggregate systems.

T. Tani, J. Tsukamoto, Y. Yamaguchi, M. Saeki, K, Hashizume M. Vacha, M. Oda

J. Nonlinear Opt.   292   537 - 542   2003

Three-dimensional orientation of single molecules observed by far- and near-field fluorescence microscopy

Vacha, M., Kotani, M.

Journal of Chemical Physics   118 ( 12 )   5279 - 5282   2003

Local reflection micro-spectroscopy of excitons in fibril-shaped molecular J-aggregates prepared in PVA thin films Reviewed

Tani, T., Yamaguchi, Y., Saeki, M., Oda, M., Vacha, M.

Journal of Luminescence   102   27 - 33   2003

Micro-spectroscopy of individual nanostructures of molecular aggregates: relationship between morphology and optical properties Reviewed

Vacha, M., Saeki, M., Hashizume, K., Tani, T.

Chemical Physics   285 ( 1 )   149 - 155   2002

Individual mesoscopic structures studied with sub-micrometer optical detection techniques: CdSe nanocrystals capped with TOPO and ZnS-overcoated system Reviewed

Hashizume, K., Matsubayashi, M., Vacha, M., Tani, T.

Journal of Luminescence   98 ( 1-4 )   49 - 56   2002

Optical properties of individual nanostructures of molecular J-aggregates Reviewed

Vacha, M., Saeki, M., Furuki, M., Pu, L. S., Hashizume, K., Tani, T.

Journal of Luminescence   98 ( 1-4 )   35 - 40   2002

Excitons and polaritons in individual J-aggregate fibers and organic-inorganic CdSe nanocrystal systems Reviewed

Vacha, M., Takei, S., Suzuki, H., Hashizume, K., Furuki, M., Pu, L. S., Tani, T.

Abstracts of Papers of the American Chemical Society   221   U262 - U262   2001

Local morphology and sub-wavelength region spectroscopy of molecular J-aggregates: Onset of exciton-polariton states in individual aggregate fibers Reviewed

M Vacha, S Takei, K Hashizume, T Tani

PROCEEDINGS OF THE 2000 INTERNATIONAL CONFERENCE ON EXCITONIC PROCESSES IN CONDENSED MATTER   425 - 428   2001

Individual J-aggregate nanostructures as self-assembled organic microcavities

Vacha, M., Furuki, M., Pu, L. S., Hashizume, K., Tani, T.

Journal of Physical Chemistry B   105 ( 49 )   12226 - 12229   2001

Sub-wavelength region spectroscopy and local morphology of individual mesoscopic quantum systems

Vacha, M., Takei, S., Suzuki, H., Hashizume, K. I., Tani, T.

Journal of Microscopy-Oxford   202   391 - 394   2001

Mapping the orientation of exciton transition dipoles along individual nanostructures of molecular J-aggregates

Vacha, M., Saeki, M., Isobe, O., Hashizume, K., Tani, T.

Journal of Chemical Physics   115 ( 11 )   4973 - 4976   2001

Local morphology and sub-wavelength region spectroscopy of molecular J-aggregates: Onset of exciton-polariton states in individual aggregate fibers

Vacha, M., Takei, S., Hashizume, K. I., Tani, T.

International Journal of Modern Physics B   15 ( 28-30 )   3993 - 3996   2001

Preparation and excitonic properties of high quality organic-inorganic nanocomposite CdSe nanocrystals

Hashizume, K., Suzuki, H., Vacha, M., Tani, T.

International Journal of Modern Physics B   15 ( 28-30 )   3777 - 3780   2001

Preparation and excitonic properties of high quality organic-inorganic nanocomposite CdSe nanocrystals Reviewed

K Hashizume, H Suzuki, M Vacha, T Tani

PROCEEDINGS OF THE 2000 INTERNATIONAL CONFERENCE ON EXCITONIC PROCESSES IN CONDENSED MATTER   209 - 212   2001

Inner structure of intact chloroplasts observed by a low temperature laser scanning microscope Reviewed

Vacha, F., Vacha, M., Bumba, L., Hashizume, K., Tani, T.

Photosynthetica   38 ( 4 )   493 - 496   2000

Onset of exciton-polariton behavior observed in individual fibers of pseudoisocyanine J-aggregates by sub-micron scale reflectance spectroscopy Reviewed

Vacha, M., Takei, S., Hashizume, K., Sakakibara, Y., Tani, T.

Chemical Physics Letters   331 ( 5-6 )   387 - 395   2000

Sub-micron scale spectroscopy and microscopy of individual mesoscopic systems at cryogenic temperatures Reviewed

Vacha, M., Hashizume, K., Tani, T.

Journal of Luminescence   86 ( 3-4 )   195 - 200   2000

Preparation and optical properties of capped-CdSe nanocrystals Reviewed

Hashizume, K., Vacha, M., Tani, T.

Journal of Luminescence   87-9   402 - 404   2000

Sub-micron scale spectroscopy localized on individual fibers of molecular J-aggregates of pseudoisocyanine dyes in thin polymer film Reviewed

Vacha, M., Hashizume, K., Tani, T.

Journal of Luminescence   87-9   730 - 732   2000

Laser scanning microscope for low temperature single molecule and microscale spectroscopy based on gradient index optics

Vacha, M., Yokoyama, H., Tokizaki, T., Furuki, M., Tani, T.

Review of Scientific Instruments   70 ( 4 )   2041 - 2045   1999

Laser scanning gradient index optics microscope: submicrometre scale spectroscopy and imaging at cryogenic temperatures Reviewed

Vacha, M., Hashizume, K., Tani, T.

Journal of Microscopy-Oxford   194   483 - 485   1999

Low temperature absorption, fluorescence, and hole-burning spectroscopy of photosystem II reaction center complex containing 1 and 2 caroitenoides

Dedic, R., Lovcinsky, M., Psencik, J., Vacha, M., Vacha, F., Hala, J.

Journal of Molecular Structure   481   573 - 576   1999

Solid Phthalocyanine with High Fluorescence Efficiency

Sakakibara, Youichi, Vacha, Martin, Tani, Toshiro

Molecular Crystals and Liquid Crystals Science and Technology Section a-Molecular Crystals and Liquid Crystals   314   71 - 76   1998

Micro-Scale Spectroscopy in Organic Solids

Vacha, Martin, Tani, Toshiro

Molecular Crystals and Liquid Crystals Science and Technology Section a-Molecular Crystals and Liquid Crystals   314   197 - 202   1998

Non-Linear Excitation Effect in Persistent Hole-Burning of Linear Frenkel Exciton System with Large Coherence Length

Tani, Toshiro, Vacha, Martin, Liu, Yi, Sasaki, Fumio, Kobayashi, Shunsuke, Nakatsuka, Hiroki

Molecular Crystals and Liquid Crystals Science and Technology Section a-Molecular Crystals and Liquid Crystals   314   167 - 172   1998

Origin of the long wavelength fluorescence band in some preparations of J-aggregates: Low-temperature fluorescence and hole burning study

Vacha, M., Furuki, M., Tani, T.

Journal of Physical Chemistry B   102 ( 11 )   1916 - 1919   1998

Photophysical properties of single terrylene molecules in Shpolskii matrices Reviewed

Vacha, M., Liu, Y., Nakatsuka, H., Tani, T.

Journal of Luminescence   72-4   548 - 550   1997

Single molecule spectroscopy in low temperature solids using gradient index lens Reviewed

Vacha, M., Liu, Y., Tani, T.

Abstracts of Papers of the American Chemical Society   213   53 - PHYS   1997

Implementation of a SELFOC lens for the light collection element for single molecule spectroscopy at cryogenic temperatures

Vacha, M., Liu, Y., Itho, J., Komuro, M., Tani, T., Nakatsuka, H.

Review of Scientific Instruments   68 ( 1 )   254 - 255   1997

Inhomogeneous and single molecule line broadening of terrylene in a series of crystalline n-alkanes

Vacha, M., Liu, Y., Nakatsuka, H., Tani, T.

Journal of Chemical Physics   106 ( 20 )   8324 - 8331   1997

Single-molecule spectroscopy of benzodiphenanthrobisanthene in a Shpolskii matrix

Vacha, M., Tani, T.

Journal of Physical Chemistry A   101 ( 28 )   5027 - 5030   1997

Single molecule and Shpolskii spectroscopy of terrylene in a series of N-alkanes

Vacha, M., Liu, Y., Nakatsuka, H., Tani, T.

Molecular Crystals and Liquid Crystals Science and Technology Section a-Molecular Crystals and Liquid Crystals   291   81 - 87   1996

Persistent spectral holeburning of Frenkel exciton system with large coherence length: PIC(Br) J-aggregates

Tani, T., Liu, Y., Vacha, M., Sasaki, F., Kobayashi, S., Nakatsuka, H.

Molecular Crystals and Liquid Crystals Science and Technology Section a-Molecular Crystals and Liquid Crystals   291   251 - 256   1996

SPECTRAL HOLE-BURNING IN THE SORET ABSORPTION-BAND OF A ZINC TETRABENZOPORPHIN DERIVATIVE Reviewed

Vacha, M., Machida, S., Horie, K.

Chemical Physics Letters   242 ( 1-2 )   169 - 176   1995

PHOTOCHEMICAL HOLE-BURNING IN HIGHER EXCITED-STATES (SORET ABSORPTION-BANDS) OF TETRABENZOPORPHINS AND TETRAPHENYLPORPHINS Reviewed

Vacha, M., Machida, S., Horie, K.

Journal of Luminescence   64 ( 1-6 )   115 - 123   1995

RELAXATIONS OF THE 2ND EXCITED-STATE OF ZINC TETRAPHENYLPORPHYRIN PROBED BY SPECTRAL HOLE-BURNING IN THE SORET ABSORPTION-BAND - ELECTRON-TRANSFER VERSUS INTERNAL-CONVERSION

Vacha, M., Machida, S., Horie, K.

Journal of Physical Chemistry   99 ( 35 )   13163 - 13167   1995

HOLE-BURNING STUDY OF EXCITED-STATE STRUCTURE AND ENERGY-TRANSFER DYNAMICS OF BACTERIOCHLOROPHYLL-C IN CHLOROSOMES OF GREEN SULFUR PHOTOSYNTHETIC BACTERIA

Psencik, J., Vacha, M., Adamec, F., Ambroz, M., Dian, J., Bocek, J., Hala, J.

Photosynthesis Research   42 ( 1 )   1 - 8   1994

RELATIONSHIP BETWEEN SPECTRAL HOLE-BURNING AND STOKES SHIFT OF ORGANIC-DYES IN POLYMER SYSTEMS

Suzuki, T., Ikemoto, M., Machida, S., Vacha, M., Horie, K., Yamashita, T.

Chemistry Letters   1994 ( 7 )   1247 - 1250   1994

INFLUENCE OF WATER-STRESS ON PHOTOSYNTHESIS AND VARIABLE CHLOROPHYLL FLUORESCENCE OF POTATO LEAVES

Zrust, J., Vacek, K., Hala, J., Janackova, I., Adamec, F., Ambroz, M., Dian, J., Vacha, M.

Biologia Plantarum   36 ( 2 )   209 - 214   1994

SITE-DIRECTED STUDY OF EXCITED ENERGY-TRANSFER IN PHOTOSYNTHETIC ANTENNA BY HOLE-BURNING IN FLUORESCENCE-SPECTRA

Vacha, M., Psencik, J., Adamec, F., Ambroz, M., Dian, J., Nedbal, L., Hala, J.

Journal of Luminescence   60-1   523 - 526   1994

FLUORESCENCE HOLE-BURNING SPECTROSCOPY OF PHTHALOCYANINE LANGMUIR-BLODGETT-FILMS

Adamec, F., Ambroz, M., Dian, J., Vacha, M., Brynda, E., Hala, J.

Journal of Luminescence   60-1   489 - 492   1994

LUMINESCENCE AND NONLINEAR-OPTICAL PROPERTIES OF POROUS SILICON

Maly, P., Trojanek, F., Valenta, J., Kohlova, V., Banas, S., Vacha, M., Adamec, F., Dian, J., Hala, J., Pelant, I.

Journal of Luminescence   60-1   441 - 444   1994

PHOTOLUMINESCENCE ASSESSMENT OF B, P, AND AL IN SI WAFERS - THE PROBLEM OF SAMPLE HEATING BY A LASER-BEAM

Pelant, I., Dian, J., Matouskova, J., Valenta, J., Hala, J., Ambroz, M., Vacha, M., Kohlova, V., Vojtechovsky, K., Kaslik, K.

Journal of Applied Physics   73 ( 7 )   3477 - 3481   1993

SPECTRAL HOLE BURNING STUDY OF PHOTOSYNTHETIC ANTENNA PIGMENT-PROTEIN COMPLEXES Reviewed

Vacha, M., Adamec, F., Ambroz, M., Dian, J., Psencik, J., Hala, J.

Journal of Molecular Structure   294   131 - 134   1993

LOW-TEMPERATURE LASER SPECTROSCOPY - HOLE BURNING TECHNIQUE Reviewed

Vacha, M., Dian, J., Adamec, F.

Chemicke Listy   87 ( 1 )   24 - 28   1993

FAST ENERGY-TRANSFER IN GREEN PHOTOSYNTHETIC BACTERIA CHLOROBIUM-LIMICOLA STUDIED BY SPECTRAL HOLE BURNING Reviewed

Psencik, J., Vacha, M., Adamec, F., Ambroz, M., Dian, J., Bocek, J., Hala, J.

Journal of Molecular Structure   294   135 - 138   1993

PHOTOPHYSICAL PROPERTIES OF THE PHTHALOCYANINE LANGMUIR-BLODGETT-FILMS STUDIED BY HOLE BURNING SPECTROSCOPY Reviewed

Adamec, F., Ambroz, M., Brynda, E., Dian, J., Vacha, M., Hala, J.

Journal of Molecular Structure   293   327 - 330   1993

LOW-TEMPERATURE OPTICAL SPECTROSCOPY OF NATURAL PORPHYRINS Reviewed

Dian, J., Adamec, F., Ambroz, M., Psencik, J., Vacha, M., Hala, J.

Journal of Molecular Structure   293   177 - 180   1993

EXCITED ENERGY-TRANSFER IN LANGMUIR-BLODGETT-FILMS STUDIED BY HOLE BURNING SPECTROSCOPY Reviewed

Hala, J., Adamec, F., Ambroz, M., Brynda, E., Dian, J., Kapsa, V., Vacha, M.

Thin Solid Films   223 ( 1 )   178 - 180   1993

SPECTRAL HOLE-BURNING OF PEA CHLOROPLAST CHLOROPHYLL-PROTEIN COMPLEXES IN GEL Reviewed

Hala, J., Vacha, M., Dian, J., Prasil, O., Komenda, J.

Photosynthetica   26 ( 3 )   429 - 436   1992

SPECTRAL HOLE BURNING STUDY OF PHOTOSYSTEM-II AND OF BACTERIAL CHLOROSOMES Reviewed

Vacha, M., Psencik, J., Adamec, F., Ambroz, M., Dian, J., Bocek, J., Komenda, J., Hala, J.

Photosynthesis Research   34 ( 1 )   161 - 161   1992

ROLE OF CENTRAL METAL IN PHTHALOCYANINE LANGMUIR-BLODGETT-FILMS STUDIED BY HOLE BURNING Reviewed

Adamec, F., Ambroz, M., Balog, P., Brynda, E., Dian, J., Vacha, M., Hala, J.

Thin Solid Films   221 ( 1-2 )   281 - 284   1992

LOW-TEMPERATURE OPTICAL SPECTROSCOPY OF PHOTOSYSTEM-2 PARTICLES - AN INFLUENCE OF PHOTOSYNTHETIC ACTIVITY Reviewed

Vacha, M., Psencik, J., Adamec, F., Ambroz, M., Dian, J., Komenda, J., Hala, J.

Photosynthetica   27 ( 1-2 )   139 - 144   1992

HOLE-BURNING SPECTROSCOPY OF UROPORPHYRINS Reviewed

Dian, J., Vacha, M., Adamec, F., Ambroz, M., Hala, J.

Journal of Molecular Structure   267   105 - 112   1992

SPECTRAL PROPERTIES OF ANTENNA PIGMENT PROTEIN COMPLEXES STUDIED BY HOLE-BURNING SPECTROSCOPY

Vacha, M., Adamec, F., Ambroz, M., Dian, J., Hala, J.

Journal of Luminescence   53 ( 1-6 )   279 - 281   1992

PERSISTENT SPECTRAL HOLE-BURNING OF NATIVE SYNECHOCOCCUS ANTENNA COMPLEXES Reviewed

Vacha, M., Dian, J., Vacha, F., Sofrova, D., Hala, J.

Photosynthetica   26 ( 4 )   593 - 599   1992

HOLE BURNING SPECTROSCOPY OF TETRAPHENYLPORPHYRINS Reviewed

Hala, J., Vacha, M., Dian, J., Adamec, F., Ambroz, M.

Czechoslovak Journal of Physics   41 ( 4 )   373 - 380   1991

SPECTRAL HOLE BURNING OF PHOTOSYNTHETIC ANTENNA OF BLUE-GREEN-ALGAE Reviewed

Vacha, M., Adamec, F., Ambroz, M., Dian, J., Hala, J.

Czechoslovak Journal of Physics   41 ( 7 )   606 - 613   1991

HOLE-BURNING SPECTROSCOPY OF ACTIVE AND INACTIVATED PHOTOSYSTEM-II PARTICLES

Vacha, M., Adamec, F., Ambroz, M., Baumruk, V., Dian, J., Nedbal, L., Hala, J.

Photochemistry and Photobiology   54 ( 1 )   127 - 132   1991

STRUCTURE AND FUNCTION OF PHOTOSYNTHETIC SYSTEMS STUDIED BY HOLE BURNING SPECTROSCOPY

Hala, J., Vacha, M., Dian, J., Ambroz, M., Adamec, F., Prasil, O., Komenda, J., Nedbal, L., Vacha, F., Mares, J.

Journal of Luminescence   48-9   295 - 298   1991

HOLE BURNING SPECTROSCOPY OF PHTHALOCYANINE LANGMUIR-BLODGET FILMS Reviewed

F ADAMEC, M AMBROZ, J DIAN, M VACHA, J HALA, P BALOG, E BRYNDA

USSR-CSFR JOINT SEMINAR ON NONLINEAR OPTICS IN CONTROL, DIAGNOSTICS, AND MODELING OF BIOPHYSICAL PROCESSES   1402   82 - 84   1991

SPECTRAL HOLE BURNING OF MODEL PHOTOSYNTHETIC SYSTEMS Reviewed

Hala, J., Vacha, M., Dian, J., Pelant, I., Ambroz, M.

Journal of Molecular Structure   219   287 - 292   1990

HIGH RESOLVED LOW-TEMPERATURE SPECTROSCOPY OF PHOTOSYNTHETIC SYSTEMS Reviewed

J HALA, J DIAN, O PRASIL, M VACHA, K VACEK

CURRENT RESEARCH IN PHOTOSYNTHESIS, VOLS 1-4   B205 - B208   1990

Investigation of Quenching Mechanism in Thermoreversible Fluorescent Recording Materials of Fluorescence Using Thermochromic Fluorescence Resonance Energy Transfer.

Shuzo Hirata, Martin Vacha, Toshiyuki Watanabe

Jpn. J. Appl. Phys.   49   052501   2010

Super-resolution via iterative phase retrieval for blurred and saturated biological images

Eran Gur, Vassilios Sarafis, Igor Falat, Frantisek Vacha, Martin Vacha, Zeev Zalevsky

OPTICS EXPRESS   16 ( 11 )   7894 - 7903   2008.5

Synthesis and characterization of a novel electroluminescent polymer based on a phenoxazine derivative

Yuichi Ito, Takahiro Shimada, Jaekook Ha, Martin Vacha, Hisaya Sato

JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY   44 ( 14 )   4338 - 4345   2006.7

Local reflection micro-spectroscopy of excitons in fibril-shaped molecular J-aggregates prepared in PVA thin films

T Tani, Y Yamaguchi, M Saeki, M Oda, M Vacha

JOURNAL OF LUMINESCENCE   102   27 - 33   2003.5

Micro-spectroscopy of individual nanostructures of molecular aggregates: relationship between morphology and optical properties

M Vacha, M Saeki, K Hashizume, T Tani

CHEMICAL PHYSICS   285 ( 1 )   149 - 155   2002.12

Individual mesoscopic structures studied with sub-micrometer optical detection techniques: CdSe nanocrystals capped with TOPO and ZnS-overcoated system

K Hashizume, M Matsubayashi, M Vacha, T Tani

JOURNAL OF LUMINESCENCE   98 ( 1-4 )   49 - 56   2002.7

Optical properties of individual nanostructures of molecular J-aggregates

M Vacha, M Saeki, M Furuki, LS Pu, K Hashizume, T Tani

JOURNAL OF LUMINESCENCE   98 ( 1-4 )   35 - 40   2002.7

Reflection microspectroscopy of fiber-like structures of molecular J-aggregates

Saeki M., Yamaguchi Y., Matsumoto H., Vacha M., Hasizume K., Tani T.

Meeting abstracts of the Physical Society of Japan   56 ( 2 )   111 - 111   2001.9

Single molecule optical detection and spectroscopy

TANI Toshiro, VACHA Martin

69 ( 12 )   1443 - 1444   2000.12

Onset of exciton-polariton behavior observed in individual fibers of pseudoisocyanine J-aggregates by sub-micron scale reflectance spectroscopy

M Vacha, S Takei, K Hashizume, Y Sakakibara, T Tani

CHEMICAL PHYSICS LETTERS   331 ( 5-6 )   387 - 395   2000.12

Sub-micron scale spectroscopy localized on individual fibers of molecular J-aggregates of pseudoisocyanine dyes in thin polymer film

M Vacha, K Hashizume, T Tani

JOURNAL OF LUMINESCENCE   87-9   730 - 732   2000.5

Preparation and optical properties of capped-CdSe nanocrystals

K Hashizume, M Vacha, T Tani

JOURNAL OF LUMINESCENCE   87-9   402 - 404   2000.5

Sub-micron scale spectroscopy and microscopy of individual mesoscopic systems at cryogenic temperatures

M Vacha, K Hashizume, T Tani

JOURNAL OF LUMINESCENCE   86 ( 3-4 )   195 - 200   2000.4

Morphology and sub-micron optical properties of pseudo-1-dimensional molecular aggregates

Takei S., Kikuchi K., Sekizaki M., Vacha M., Hashizume K., Tani T.

Meeting abstracts of the Physical Society of Japan   55 ( 1 )   631 - 631   2000.3

Inner structure of intact chloroplasts observed by a low temperature laser scanning microscope

F Vacha, M Vacha, L Bumba, K Hashizume, T Tani

PHOTOSYNTHETICA   38 ( 4 )   493 - 496   2000

Laser scanning gradient index optics microscope: submicrometre scale spectroscopy and imaging at cryogenic temperatures

M Vacha, K Hashizume, T Tani

JOURNAL OF MICROSCOPY-OXFORD   194   483 - 485   1999.5

31a-YH-3 2D scanning microscope for single molecule detection and spectroscopy using gradient index micro-lens

VACHA M., YOKOYAMA H., TANI T.

Meeting abstracts of the Physical Society of Japan   53 ( 1 )   191 - 191   1998.3

6a-J-5 Spectroscopy on micro-scales : towards the single J-aggregate detection

Vacha M., Furuki M., Kawashima H., Sasaki F., Kobayashi S., Tani T.

Meeting abstracts of the Physical Society of Japan   52 ( 2 )   216 - 216   1997.9

Photophysical properties of single terrylene molecules in Shpolskii matrices

M Vacha, Y Liu, H Nakatsuka, T Tani

JOURNAL OF LUMINESCENCE   72-4   548 - 550   1997.6

31p-YC-10 SINGLE MOLECULE SPECTROSCOPY IN n-ALKANE CRYSTALS II.

Vacha Martin, Liu Y, Nakatsuka H, Tani T

Meeting abstracts of the Physical Society of Japan   52 ( 1 )   250 - 250   1997.3

Single Molecule Spectroscopy of Terrylene in Crystalline Matrices of n-Alkanes

Vacha M., Liu Yi, Nakatsuka H., Tani T.

Abstracts of the meeting of the Physical Society of Japan. Sectional meeting   1996 ( 2 )   465 - 465   1996.9

SPECTRAL HOLE-BURNING IN THE SORET ABSORPTION-BAND OF A ZINC TETRABENZOPORPHIN DERIVATIVE

M VACHA, S MACHIDA, K HORIE

CHEMICAL PHYSICS LETTERS   242 ( 1-2 )   169 - 176   1995.8

PHOTOCHEMICAL HOLE-BURNING IN HIGHER EXCITED-STATES (SORET ABSORPTION-BANDS) OF TETRABENZOPORPHINS AND TETRAPHENYLPORPHINS

M VACHA, S MACHIDA, K HORIE

JOURNAL OF LUMINESCENCE   64 ( 1-6 )   115 - 123   1995.5

LOW-TEMPERATURE OPTICAL SPECTROSCOPY OF NATURAL PORPHYRINS

J DIAN, F ADAMEC, M AMBROZ, J PSENCIK, M VACHA, J HALA

JOURNAL OF MOLECULAR STRUCTURE   293   177 - 180   1993.3

SPECTRAL HOLE BURNING STUDY OF PHOTOSYNTHETIC ANTENNA PIGMENT-PROTEIN COMPLEXES

M VACHA, F ADAMEC, M AMBROZ, J DIAN, J PSENCIK, J HALA

JOURNAL OF MOLECULAR STRUCTURE   294   131 - 134   1993.3

PHOTOPHYSICAL PROPERTIES OF THE PHTHALOCYANINE LANGMUIR-BLODGETT-FILMS STUDIED BY HOLE BURNING SPECTROSCOPY

F ADAMEC, M AMBROZ, E BRYNDA, J DIAN, M VACHA, J HALA

JOURNAL OF MOLECULAR STRUCTURE   293   327 - 330   1993.3

FAST ENERGY-TRANSFER IN GREEN PHOTOSYNTHETIC BACTERIA CHLOROBIUM-LIMICOLA STUDIED BY SPECTRAL HOLE BURNING

J PSENCIK, M VACHA, F ADAMEC, M AMBROZ, J DIAN, J BOCEK, J HALA

JOURNAL OF MOLECULAR STRUCTURE   294   135 - 138   1993.3

EXCITED ENERGY-TRANSFER IN LANGMUIR-BLODGETT-FILMS STUDIED BY HOLE BURNING SPECTROSCOPY

J HALA, F ADAMEC, M AMBROZ, E BRYNDA, J DIAN, KAPSA, V, M VACHA

THIN SOLID FILMS   223 ( 1 )   178 - 180   1993.1

ROLE OF CENTRAL METAL IN PHTHALOCYANINE LANGMUIR-BLODGETT-FILMS STUDIED BY HOLE BURNING

F ADAMEC, M AMBROZ, P BALOG, E BRYNDA, J DIAN, M VACHA, J HALA

THIN SOLID FILMS   221 ( 1-2 )   281 - 284   1992.12

HOLE-BURNING SPECTROSCOPY OF UROPORPHYRINS

J DIAN, M VACHA, F ADAMEC, M AMBROZ, J HALA

JOURNAL OF MOLECULAR STRUCTURE   267   105 - 112   1992.3

PERSISTENT SPECTRAL HOLE-BURNING OF NATIVE SYNECHOCOCCUS ANTENNA COMPLEXES

M VACHA, J DIAN, F VACHA, D SOFROVA, J HALA

PHOTOSYNTHETICA   26 ( 4 )   593 - 599   1992

SPECTRAL HOLE-BURNING OF PEA CHLOROPLAST CHLOROPHYLL-PROTEIN COMPLEXES IN GEL

J HALA, M VACHA, J DIAN, O PRASIL, J KOMENDA

PHOTOSYNTHETICA   26 ( 3 )   429 - 436   1992

LOW-TEMPERATURE OPTICAL SPECTROSCOPY OF PHOTOSYSTEM-2 PARTICLES - AN INFLUENCE OF PHOTOSYNTHETIC ACTIVITY

M VACHA, J PSENCIK, F ADAMEC, M AMBROZ, J DIAN, J KOMENDA, J HALA

PHOTOSYNTHETICA   27 ( 1-2 )   139 - 144   1992

Hole burning spectroscopy of tetraphenylporphyrins

J. Hala, M. Vacha, J. Dian, F. Adamec, M. Ambroz R. Tesar

Czech. J. Phys.   41   373 - 380   1991

SPECTRAL HOLE BURNING OF PHOTOSYNTHETIC ANTENNA OF BLUE-GREEN-ALGAE

M VACHA, F ADAMEC, M AMBROZ, J DIAN, J HALA

CZECHOSLOVAK JOURNAL OF PHYSICS   41 ( 7 )   606 - 613   1991

SPECTRAL HOLE BURNING OF MODEL PHOTOSYNTHETIC SYSTEMS

J HALA, M VACHA, J DIAN, PELANT, I, M AMBROZ

JOURNAL OF MOLECULAR STRUCTURE   219   287 - 292   1990.3

Single molecule characterization og phosphorescent organometallic complexes

2005 

On the origin of excimer emission in electroluminescence and photoluminescence spectra of polyfluorenes

2005 

Spatial location of photosystem pigment-protein complexes in thylakoid membranes of chloroplasts of Pisum sativum studied by chlorophyll fluorescence

International Conference on Luminescence '05 Beijing, China, July 25-29, 2005  2005 

Three-dimensional orientation of individual pyridine 1 molecules in a stretched polyvinyl alcohol film studied by single molecule fluorescence measurement

2005 

Towards single molecule detection of intramolecular exciplexes: Photophysics of a benzanthrone derivative

2005 

Characterization of phosphorescent organometallic complexes on single molecule level

2005 

Single molecule characterization og phosphorescent organometallic complexes

2005 

Single molecule electroluminescence of a phosphorescent organometallic complex

10th International Conference on Hole Burning and Single Molecule Spectroscopies  2009 

ペリレンジイミド部位を持つ環状および直鎖状ポリテトラヒドロフランの単分子蛍光観察による拡散係数測定

第58回高分子討論会  2009 

Nanoscale heterogeneity and dynamics of organic EL devices: single-molecule study

2009 Annual Meeting on Photochemistry  2009 

Relationship between conformation and optical/electrical properties of single conjugated polymer chains: MEH-PPV and polythiophene

10th International Conference on Hole Burning and Single Molecule Spectroscopies  2009 

Photobleaching and single molecule detection of a phosphorescent organometallic iridium(III) complex

2003 

Optical studies of organic materials on single molecule level

2003 

Photobleaching and single molecule detection of a phosphorescent organometallic iridium(III) complex

2003 

Optical studies of organic materials on single molecule level

2003 

Spatial location of photosystem pigment-protein complexes in thylakoid membranes of chloroplasts of Pisum sativum studied by chlorophyll fluorescence

International Conference on Luminescence '05 Beijing, China, July 25-29, 2005  2005 

Towards single molecule detection of intramolecular exciplexes: Photophysics of a benzanthrone derivative

2005 

On the origin of excimer emission in electroluminescence and photoluminescence spectra of polyfluorenes

2005 

Optical study of conformation of single conjugated polymer molecules via their absorption ellipsoids

IUPAC International Symposium on Advanced Polymers for Emerging Technologies  2006 

Three-dimensional orientation of individual pyridine 1 molecules in a stretched polyvinyl alcohol film studied by single molecule fluorescence measurement

2005 

A method for determining the absorption ellipsoid of single conjugated polymer molecules and single luminescent nanoparticles

IXth International Conference on Hole Burning, Single Molecule and Related Spectroscopies. Aussois, France, July 2006  2006 

Study of phosphorescent iridium complexes on single molecule level

6th International Conference on Electroluminescence of Molecular Materials. Hong Kong, August 2006  2006 

Optical study of conformation of single conjugated polymer molecules via their absorption ellipsoids

IUPAC International Symposium on Advanced Polymers for Emerging Technologies  2006 

Conjugated polymer conformations and related photophysics in thin-film matrices: a single-molecule study

STAC2/STSI1  2008 

Conjugated polymer conformations and related photophysics in thin-film matrices: a single-molecule study

STAC2/STSI1  2008 

Relationship between conformation and photophysics of single conjugated polymer chains

2008 

Relationship between conformation and photophysical and electrical properties of single conjugated polymer chains

58th Autumn Meeting of the Society of Polymer Science  2009 

Nanoscale heterogeneity and dynamics of organic EL devices: single-molecule study

2009 Annual Meeting on Photochemistry  2009 

Two-photon excited luminescence from phosphorescent organometallic iridium complexes studied on ensemble and single molecule level

International Conference on Dynamical Processes in Excited States of Solids DPC 07  2007 

Measurement of conformation of single MEH-PPV molecules via their absorption ellipsoids

XXIII International Conference on Photochemistry  2007 

Relationship between conformation and photophysics of single chains of conjugated polymers

10th Pacific Polymer Conference  2007 

単一分子有機金属錯体Ir(ppy)3における二光子励起による発光過程の研究

第５４回応用物理学関係連合講演会  2007 

Relationship between conformation and photophysical and electrical properties of single conjugated polymer chains

58th Autumn Meeting of the Society of Polymer Science  2009 

Relationship between conformation and photophysics of single conjugated polymer chains

2008 

Single molecule detection in organic materials research

IXth International Conference on Hole Burning, Single Molecule and related Spectroscopies. Aussois, France, June 2006  2006 

A method for determining the absorption ellipsoid of single conjugated polymer molecules and single luminescent nanoparticles

IXth International Conference on Hole Burning, Single Molecule and Related Spectroscopies. Aussois, France, July 2006  2006 

ポリチオフェン単一分子鎖の構造と光物理的特性の相関

光化学討論会  2007 

Relationship between conformation and photophysics of single chains of conjugated polymers

10th Pacific Polymer Conference  2007 

A relationship between structure and photophysics in single polythiophene molecules

XXIII International Conference on Photochemistry  2007 

共役系高分子単一分子鎖の構造と光物理的特性の相関

第５６回高分子討論会  2007 

Relationship between conformation and optical/electrical properties of single conjugated polymer chains: MEH-PPV and polythiophene

10th International Conference on Hole Burning and Single Molecule Spectroscopies  2009 

Single molecule electroluminescence of a phosphorescent organometallic complex

10th International Conference on Hole Burning and Single Molecule Spectroscopies  2009 

キャピラリー電気泳動ドーピング法による色素分子配向性有機・無機ハイブリッド薄膜の作製ーデフォーカスイメージング法によるローダミン６G単一分子蛍光像観察ー

日本セラミックス協会2010年年会  2010 

Conformation and photophysics related in single chains of conjugated polymers

3rd International Symposium on Integrated Molecular/Materials Engineering  2008 

ポリチオフェン単一分子鎖の光物性と構造の関係

2008年光化学討論会  2008 

単一分子分光法による光合成細菌集光アンテナの内部構造についての研究

2008年光化学討論会  2008 

Conformation and photophysics related in single chains of conjugated polymers

3rd International Symposium on Integrated Molecular/Materials Engineering  2008 

単一分子分光法によるＴｇ付近におけるポリマー薄膜のナノスケールダイナミクス

2008年光化学討論会  2008 

Ｉｒ錯体の単一分子レベルにおける発光特性解析

2008年光化学討論会  2008 

共役系ポリマー単一分子鎖のコンフォメーションと光物理的特性の相関

2008年光化学討論会  2008 

Measurement of conformation of single MEH-PPV molecules via their absorption ellipsoids

XXIII International Conference on Photochemistry  2007 

A relationship between structure and photophysics in single polythiophene molecules

XXIII International Conference on Photochemistry  2007 

Two-photon excited luminescence from phosphorescent organometallic iridium complexes studied on ensemble and single molecule level

International Conference on Dynamical Processes in Excited States of Solids DPC 07  2007 

有機ＥＬ燐光材料の単一分子レベルでの発光研究

2004 - 2005

科学研究費補助金