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机械拉伸α-Cyclodextrin 伪多聚胺弹性体具有可逆光行为

Yi Zhang¹, Yong Chen¹, Jian-Qiu Li¹

¹College of Chemistry, State Key Laboratory of Elemento-Organic Chemistry, Nankai University, Tianjin, 300071, P. R. China.

Advanced science (Weinheim, Baden-Wurttemberg, Germany)

|February 4, 2024

概括

这项研究引入了以纳夫他林为基础的伪多聚素 (NPR) 来制造先进的弹性体. 这些材料表现出强大的室温光和独特的机械响应发光.

科学领域:

材料科学材料科学材料科学
超分子化学超分子化学
聚合物化学聚合物化学

背景情况:

超分子化学为设计材料特性提供了新的途径.
循环德克斯林包容复合物是高级功能材料的关键组成部分.
水性聚氨 (WPU) 是具有越来越多应用的多功能弹性体.

研究的目的:

开发具有增强机械和发光性能的新型超分子弹性体.
为了研究室温光 (RTP) 感应和调制的机制.
探索机械响应发光在智能材料中的潜力.

主要方法:

通过将聚乙烯糖链连接成α-cyclodextrin,合成纳夫他林功能化伪多聚 (NPR).
通过结合将NPR纳入水性聚氨 (WPU) 矩阵中.
在各种条件和机械应变下,机械性能,热稳定性和室温光 (RTP) 的表征.

主要成果:

通过循环德克斯特林限制,NPR成功地在纳夫他林部分中诱导了RTP.
由此产生的WPU弹性体在各种环境 (水,酸,,有机溶剂,160°C) 中表现出增强的机械强度和稳定的RTP排放.
在机械拉伸时观察到光强度的显著,可逆增加 (在200%的应变下高达三倍),这归因于受抑制的非辐射过渡.

结论:

结合NPR的超分子弹性体表现出强大的RTP和可调节的发光.
机械刺激可以反向调节光行为,为应变感应材料开辟道路.
这项工作提出了一个新的策略,用于设计具有机械响应性的先进的超分子发光材料.

关键词:

机械反应机械反应光是一种光效应.这是一种伪多聚甲.超分子弹性体超分子弹性体

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