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

<jats:title>Abstract</jats:title>
<jats:p>2-Pyrone-4,6-dicarboxylic acid (PDC) is a lignin-derived biometabolic intermediate that can be produced on a large scale by using transforming bacteria and can be directly polymerized by polycondensation with diols to produce biomass polyesters. In the present study, a variety of PDC-based polyesters were successfully synthesized by direct polymerization between PDC and diols with different alkyl chain lengths. The thermal, crystalline, and mechanical properties of a series of PDC polyesters were fully characterized. The biodegradability of the PDC polyesters was investigated by biodegradation tests in a confined simulated environment using pond water. There was a clear correlation between the biodegradation rate, alkylene spacer length, and polymer hydrophilicity. In addition, the PDC polyesters exhibited excellent adhesive properties to various metals, and their adhesive properties gradually decreased with a decrease in the PDC content in the polymers. The excellent adhesion to an aluminum plate with the lap-shear strength of up to 15.26 MPa was demonstrated and this value is comparable to those of the-state-of-the-art commercial quick-drying metal adhesives.</jats:p>

DOI： 10.1038/s41427-025-00626-3

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

DOI： 10.11370/isj.64.293

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

<jats:title>Abstract</jats:title><jats:p>Insolubility of functional molecules caused by polymorphism sometimes poses limitations for their solution‐based processing. Such a situation can also occur in the preparation processes of supramolecular polymers formed in a solution. An effective strategy to address this issue is to prepare amorphous solid states by introducing a “coformer” molecule capable of inhibiting the formation of an insoluble polymorph through co‐aggregation. Herein, inspired by the coformer approach, we demonstrated a solubility enhancement of a barbiturate π‐conjugated compound that can supramolecularly polymerize through six‐membered hydrogen‐bonded rosettes. Our newly synthesized supramolecular coformer molecule features a sterically demanding methyl group in the π‐conjugated unit of the parent molecule. Although the parent molecule exhibits low solubility in nonpolar solvents due to the formation of a crystalline polymorph comprising a tape‐like hydrogen‐bonded array prior to the supramolecular polymerization, mixing with the coformer compound enhanced the solubility by inhibiting mesoscopic organization of the tapes. The two monomers were then co‐polymerized into desired helicoidal supramolecular polymers through the formation of heteromeric rosettes.</jats:p>

DOI： 10.1002/anie.202312516

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

DOI： 10.1021/jacs.3c07556

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

DOI： 10.1021/jacs.1c00592

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J-GLOBAL

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