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Mechanochromic Fluorescent Polymers Enabled by AIE Processes.
Macromolecular Rapid Communications ( IF 4.6 ) Pub Date : 2020-07-10 , DOI: 10.1002/marc.202000311
Ting Han 1 , Lijie Liu 2, 3 , Dong Wang 1 , Jinglei Yang 3 , Ben Zhong Tang 1, 2
Affiliation  

Polymeric materials are susceptible to the chain re‐conformation, reorientation, slippage, and bond cleavage upon mechanical stimuli, which are likely to further grow into macro‐damages and eventually lead to the compromise or loss of materials performance. Therefore, it is of great academic importance and practical significance to sensitively detect the local mechanical states in polymers and monitor the dynamic variations in polymer structures and properties under external forces. Mechanochromic fluorescent polymers (MFP) are a class of smart materials by utilizing sensitive fluorescent motifs to detect polymer chain events upon mechanical stimuli. Taking advantage of the unique aggregation‐induced emission (AIE) effect, a variety of MFP systems that can self‐report their mechanical states and mechano‐induced structural and property changes through fluorescence signals have been developed. In this feature article, an overview of the recent progress on MFP systems enabled by AIE process is presented. The main design principles, including physically doping dispersed or microencapsulated AIE luminogens (AIEgens) into polymer matrix, chemically linking AIEgens in polymer backbones, and utilizing the clusterization‐triggered emission of polymers containing nonconventional luminogens, are discussed with representative examples. Perspectives on the existing challenges and problems in this field are also discussed to guide future development.

中文翻译:

AIE 工艺实现的机械变色荧光聚合物。

聚合物材料在机械刺激下易发生链重组、重新定向、滑移和键断裂,这些都可能进一步发展成宏观损伤,最终导致材料性能的妥协或损失。因此,灵敏地检测聚合物中的局部力学状态,监测聚合物在外力作用下结构和性能的动态变化具有重要的学术意义和现实意义。机械变色荧光聚合物 (MFP) 是一类智能材料,它利用敏感的荧光基序在机械刺激下检测聚合物链事件。利用独特的聚集诱导发射(AIE)效应,已经开发了多种可以通过荧光信号自我报告其机械状态和机械诱导的结构和性能变化的 MFP 系统。在这篇专题文章中,概述了由 AIE 流程启用的 MFP 系统的最新进展。主要设计原则,包括将分散或微封装的 AIE 发光剂 (AIEgens) 物理掺杂到聚合物基质中,将 AIEgens 化学连接到聚合物主链中,以及利用含有非常规发光剂的聚合物的簇化触发发射,并通过代表性示例进行了讨论。还讨论了对该领域现有挑战和问题的看法,以指导未来的发展。概述了由 AIE 流程启用的 MFP 系统的最新进展。主要设计原则,包括将分散或微封装的 AIE 发光剂 (AIEgens) 物理掺杂到聚合物基质中,将 AIEgens 化学连接到聚合物主链中,以及利用含有非常规发光剂的聚合物的簇化触发发射,并通过代表性示例进行了讨论。还讨论了对该领域现有挑战和问题的看法,以指导未来的发展。概述了由 AIE 流程启用的 MFP 系统的最新进展。主要设计原则,包括将分散或微封装的 AIE 发光剂 (AIEgens) 物理掺杂到聚合物基质中,将 AIEgens 化学连接到聚合物主链中,以及利用含有非常规发光剂的聚合物的簇化触发发射,并通过代表性示例进行了讨论。还讨论了对该领域现有挑战和问题的看法,以指导未来的发展。用有代表性的例子进行讨论。还讨论了对该领域现有挑战和问题的看法,以指导未来的发展。用有代表性的例子进行讨论。还讨论了对该领域现有挑战和问题的看法,以指导未来的发展。
更新日期:2020-07-10
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