Photoresponsive Supramolecular Polymers: From Light-Controlled Small Molecules to Smart Materials,Advanced Materials

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Photoresponsive Supramolecular Polymers: From Light-Controlled Small Molecules to Smart Materials
Advanced Materials ( IF 27.4 ) Pub Date : 2022-10-14 , DOI: 10.1002/adma.202204413
Fan Xu ₁ , Ben L Feringa ₁

Affiliation

Photoresponsive supramolecular polymers are well-organized assemblies based on highly oriented and reversible noncovalent interactions containing photosensitive molecules as (co-)monomers. They have attracted increasing interest in smart materials and dynamic systems with precisely controllable functions, such as light-driven soft actuators, photoresponsive fluorescent anticounterfeiting and light-triggered electronic devices. The present review discusses light-activated molecules used in photoresponsive supramolecular polymers with their main photo-induced changes, e.g., geometry, dipole moment, and chirality. Based on these distinct changes, supramolecular polymers formed by light-activated molecules exhibit photoresponsive disassembly and reassembly. As a consequence, photo-induced supramolecular polymerization, “depolymerization,” and regulation of the lengths and topologies are observed. Moreover, the light-controlled functions of supramolecular polymers, such as actuation, emission, and chirality transfer along length scales, are highlighted. Furthermore, a perspective on challenges and future opportunities is presented. Besides the challenge of moving from harmful UV light to visible/near IR light avoiding fatigue, and enabling biomedical applications, future opportunities include light-controlled supramolecular actuators with helical motion, light-modulated information transmission, optically recyclable materials, and multi-stimuli-responsive supramolecular systems.

中文翻译：

光敏超分子聚合物：从光控小分子到智能材料

光响应超分子聚合物是基于高度定向和可逆非共价相互作用的组织良好的组件，包含光敏分子作为（共）单体。它们引起了人们对具有精确可控功能的智能材料和动态系统的兴趣，例如光驱动软执行器、光响应荧光防伪和光触发电子设备。本综述讨论了光敏超分子聚合物中使用的光活化分子及其主要的光致变化，例如几何形状、偶极矩和手性。基于这些明显的变化，由光激活分子形成的超分子聚合物表现出光响应性的分解和重组。因此，光诱导的超分子聚合，“解聚，” 并观察到长度和拓扑的规定。此外，还强调了超分子聚合物的光控功能，例如沿长度尺度的驱动、发射和手性转移。此外，还提出了对挑战和未来机遇的看法。除了从有害紫外线转向可见光/近红外光以避免疲劳和实现生物医学应用的挑战之外，未来的机会包括具有螺旋运动的光控超分子致动器、光调制信息传输、光学可回收材料和多刺激-反应性超分子系统。此外，还提出了对挑战和未来机遇的看法。除了从有害紫外线转向可见光/近红外光以避免疲劳和实现生物医学应用的挑战之外，未来的机会包括具有螺旋运动的光控超分子致动器、光调制信息传输、光学可回收材料和多刺激-反应性超分子系统。此外，还提出了对挑战和未来机遇的看法。除了从有害紫外线转向可见光/近红外光以避免疲劳和实现生物医学应用的挑战之外，未来的机会包括具有螺旋运动的光控超分子致动器、光调制信息传输、光学可回收材料和多刺激-反应性超分子系统。

更新日期：2022-10-14

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