富含罗丹明嵌段的机械变色共聚物

IF 5.2 1区化学 Q1 POLYMER SCIENCE

Macromolecules Pub Date : 2025-02-26 DOI:10.1021/acs.macromol.4c02818

Shuaipeng Zhang, Yifei Gao, Yaxin Wang, Mengjiao Wu, Xiaoshuai Huang, Zhengjin Wu, Jianhui Wang, Yulan Chen, Yuan Yuan

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引用次数: 0

摘要

合成了一类新的多罗丹明基大机械载体（rh - pet）。Rh-PET的链延伸导致了一系列高机械基团含量的共聚物，包括含聚丙烯酸甲酯（Rh-PET- pmas）和聚氨酯（Rh-PET- pu）。该平台允许系统地分析聚合物在溶液状态下的超声和在体积状态下的张力/压缩的机械变色特性，根据它们的罗丹明含量和分子量。与单罗丹明类似物相比，rh - pet - pma和rh - pet - pu表现出更有效的罗丹明机械化学开环，降低了力阈值，改善了整体力学性能。因此，这种设计揭示了一种通用的方法，可以提高基于rh的应力报告聚合物的机械变色灵敏度。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Mechanochromic Copolymers with a Rhodamine-Rich Block

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Mechanochromic Copolymers with a Rhodamine-Rich Block

A new class of multirhodamine-based macromechanophores (Rh-PETs) are synthesized. Chain extension of Rh-PETs leads to a series of high mechanophore content copolymers including Rh-PET containing poly(methyl acrylate)s (Rh-PET-PMAs) and polyurethanes (Rh-PET-PUs). This platform allows for systematic analyses of mechanochromic properties of the polymers under sonication in the solution state and tension/compression in the bulk state in terms of their rhodamine content and molecular weight. Compared to their monorhodamine analogues, Rh-PET-PMAs and Rh-PET-PUs exhibit more efficient mechanochemical ring opening of rhodamine, reduced force threshold, and improved bulk mechanical properties. This design is thus revealed as a versatile methodology to promote the mechanochromic sensitivity of Rh-based stress-reporting polymers.

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来源期刊

Macromolecules 工程技术-高分子科学

CiteScore

9.30

自引率

16.40%

发文量

942

审稿时长

2 months

期刊介绍： Macromolecules publishes original, fundamental, and impactful research on all aspects of polymer science. Topics of interest include synthesis (e.g., controlled polymerizations, polymerization catalysis, post polymerization modification, new monomer structures and polymer architectures, and polymerization mechanisms/kinetics analysis); phase behavior, thermodynamics, dynamic, and ordering/disordering phenomena (e.g., self-assembly, gelation, crystallization, solution/melt/solid-state characteristics); structure and properties (e.g., mechanical and rheological properties, surface/interfacial characteristics, electronic and transport properties); new state of the art characterization (e.g., spectroscopy, scattering, microscopy, rheology), simulation (e.g., Monte Carlo, molecular dynamics, multi-scale/coarse-grained modeling), and theoretical methods. Renewable/sustainable polymers, polymer networks, responsive polymers, electro-, magneto- and opto-active macromolecules, inorganic polymers, charge-transporting polymers (ion-containing, semiconducting, and conducting), nanostructured polymers, and polymer composites are also of interest. Typical papers published in Macromolecules showcase important and innovative concepts, experimental methods/observations, and theoretical/computational approaches that demonstrate a fundamental advance in the understanding of polymers.