基于胆甾相液晶的结构色变色材料  

Cholesteric liquid crystal-based structural color-changing materials

作　　者：王猛 郑逸飞 杨洪[1] WANG Meng;ZHENG Yifei;YANG Hong(School of Chemistry and Chemical Engineering,Southeast University,Nanjing 211189,China)

机构地区：[1]东南大学化学化工学院,南京211189

出　　处：《东南大学学报(自然科学版)》2025年第1期306-316,共11页Journal of Southeast University:Natural Science Edition

基　　金：国家重点研发计划资助项目(2022YFA1405000);国家杰出青年科学基金资助项目(22325501);国家自然科学基金资助项目(21971037,52173109,52473107)。

摘　　要：胆甾相液晶具有独特的螺旋结构,这种周期性结构可以选择性地反射入射光,产生鲜明且可调谐的结构色。胆甾相液晶对外部刺激(如热、光、力、电场、磁场等)极为敏感,能通过螺距的变化实现结构色的动态调控。随着对胆甾相液晶结构色调控机制的深入理解,大量基于胆甾相液晶的结构色变色材料被开发出来,并在智能材料、光学器件等领域展现出广阔的应用前景。系统综述了基于胆甾相液晶的结构色变色材料的设计、制备,深入研究了胆甾相液晶材料在外部刺激下的结构色调控机制,重点介绍了基于胆甾相液晶的结构色变色材料在信息加密、环境传感、显示技术等领域的前沿应用,最后展望了基于胆甾相液晶的结构色变色材料的未来发展方向和研究挑战。Cholesteric liquid crystals(CLCs)possess a unique helical structure,which can selectively re-flect incident light due to their periodic arrangement,resulting in vivid and tunable structural colors.These liquid crystals are highly sensitive to external stimuli such as heat,light,force,electric fields,and magnetic fields,enabling dynamic control of structural color through pitch variation.As the understanding of the color modulation mechanisms in CLCs deepens,a wide range of structural color-changing materials based on CLCs are developed,showing great promise in intelligent materials and optical devices.This review covers the design and fabrication of CLC-based structural color-changing materials,thoroughly investigating the mechanisms of structural color modulation under external stimuli.It also highlights the forefront applications of these materials in information encryption,environmental sensing,and display technologies,and finally,it discusses future development directions and research challenges for CLC-based structural color-changing materials.

关 键 词：胆甾相液晶 结构色 变色 智能材料 光学器件 

分 类 号：O753.2[理学—晶体学]