Difference between Mechanochromism and Photochromism of Aminobenzopyranoxanthene in Single-Network and Double-Network Elastomers

IF 5.1 1区化学 Q1 POLYMER SCIENCE

Macromolecules Pub Date : 2025-06-07 DOI:10.1021/acs.macromol.5c00603

Yongjie Li, Huan Hu, Jingyuan Zhou, Ning He, Qinyao Zhuang, Xin Cheng, Mingzhi Chen, Zhimin Ma, Wei Wu, Zhiyong Ma

引用次数: 0

Abstract

We here report different mechanochromic and photochromic behaviors of double-spiro mechanophore ABPX-2OH in single-network polyurethane (PU) elastomer and double-network polymethacrylate-polyurethane (PMA–PU) elastomer. Distinct from in solution, ABPX undergoes a photoinduced single-ring-opening reaction but suffers a force-induced simultaneous ring-opening reaction of double spirocycles in bulk elastomers. Furthermore, the prestretching effect in PMA–PU promotes the mechanochromism of ABPX-2OH significantly, while reducing the free volume to impede the photochromism of ABPX-2OH sharply. The double-spiro mechanophore combined with the interpenetrating polymer network strategy exhibits a controllable multistate stimuli-responsive platform to realize multicolor switches by different stimuli, which not only can improve the recognition ability for stimuli in complex environments but also shows potential in programmable sensing and display.

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单网和双网弹性体中氨基苯并蒽的机械致色性和光致色性的差异

本文报道了双螺旋机械团ABPX-2OH在单网聚氨酯（PU）弹性体和双网聚甲基丙烯酸酯-聚氨酯（PMA-PU）弹性体中不同的机械变色和光变色行为。与溶液中不同的是，ABPX经历光诱导的单环开环反应，但在体弹性体中遭受力诱导的双螺环同时开环反应。此外，PMA-PU中的预拉伸效应显著促进了ABPX-2OH的机械致色性，同时减少了自由体积，严重阻碍了ABPX-2OH的光致色性。双螺旋机械团结合互穿聚合物网络策略，提供了一种可控的多状态刺激响应平台，可以实现不同刺激的多色切换，不仅可以提高复杂环境下对刺激的识别能力，而且在可编程传感和显示方面具有潜力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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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.