文献类型：期刊文献

中文题名：手性光开关构筑液晶螺旋结构研究进展

英文题名：Progress on chiral photoswitches for constructing liquid crystal helical structures

作者：胡宏龙[1];郑致刚[1]

机构：[1]华东理工大学物理学院,上海200237

年份：2025

卷号：40

期号：1

起止页码：75

中文期刊名：液晶与显示

外文期刊名：Chinese Journal of Liquid Crystals and Displays

收录：;WOS:【ESCI(收录号:WOS:001425338000006)】；北大核心:【北大核心2023】；

基金：国家重点研发计划(No.2022YFA1203700);国家自然科学基金(No.62275081,No.62035008,No.22305079);上海市扬帆计划(No.23YF1409000)。

语种：中文

中文关键词：光开关;手性;液晶;螺旋结构

外文关键词：photoswitches;chirality;liquid crystals;helical structures

摘要：光响应手性液晶材料作为一类具备自组装和熵致有序特性的软物质,展现出优异的光调螺旋结构特性,广泛应用于光学防伪、光编码和激光工程等领域。将手性光开关引入液晶体系中,可以有效利用光诱导的手性转换,实现对液晶材料自组装螺旋结构的远程操控。当前,偶氮苯、分子马达和二芳基乙烯是液晶体系中常用的手性光开关,它们在手性液晶中表现出弱刺激、强响应的调控性能,展现出广阔的应用前景。本文重点探讨这3类手性光开关的结构设计思路,总结了光调控液晶螺旋结构所呈现的独特性能,包括光可逆调控螺旋结构的螺距大小和方向。最后,展示了基于这些光开关构筑的光响应柔性液晶材料通过光操控实现颜色、形状等变化,在信息存储、防伪、软体机械和可穿戴设备领域的巨大应用潜力,并对该领域未来的发展方向进行了展望。
Photoresponsive chiral liquid crystal materials,as a type of soft matter with self-assembly and entropy-driven ordering properties,exhibit excellent optical modulation of helical structures and are widely used in optical anti-counterfeiting,optical coding,and laser engineering.By incorporating chiral photoswitches into liquid crystal systems,light-induced chiral conversion can be effectively harnessed to remotely control the self-assembled helical structures of the liquid crystal materials.Currently,azobenzene,molecular motors,and diarylethene are widely utilized as chiral photoswitches in liquid crystal systems.These compounds exhibit weak stimulus and strong response control properties,highlighting their broad application prospects.This paper focuses on the structural design concepts of these three types of chiral photoswitches and summarizes the unique properties exhibited in light-modulated liquid crystal helical structures,including the reversible optical control of parameters such as helical structure pitch size and direction.Finally,the light-responsive flexible liquid crystal materials constructed using these photoswitches demonstrated their ability to achieve changes in color and shape through light manipulation,showcasing potential application in information storage,anti-counterfeiting,soft robotics,and wearable devices,along with an outlook on future developments in this field.