圆偏振发光液晶体系的构建与应用

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关键词：圆偏振发光；手性液晶；发光不对称因子；圆偏振光应用

中图分类号： 0436.3;0753+.2 文献标识码：A doi：10.37188/CJLCD.2024-0229 CSTR：32172.14.CJLCD.2024-0229

Endowing circularly polarized luminescence in liquid crystal composites for desired applications

ZHANG Mingjiang 1，2 ， SU Ruiqi1，2#， ZHUANG Taotao1，2 （1. Department ofChemistry， University of Science and Technology of China， Hefei 230O26，China; 2.Division ofNanomaterials and Chemistry，Hefei National Research Center for PhysicalSciencesattheMicroscale，Hefei23oo26，China）

Abstract：Circularly polarized luminescence （CPL）reveals the unique excited-state characteristics of chiral luminescent systems，ofering broad interdisciplinary applications.However，current chiral luminescent materials typically sufer from inadequate polarized luminescence performance.Chiral liquid crystalspossess a distinctive periodic helical structure that can selectively reflect left-or right-handed circularly polarized light.By combining these with luminescent functional materials，one can achieve CPL systems with high luminescence dissymmetry factors. Consequently， the use of chiral liquid crystals to induce and amplify the circularly polarized luminescence performance of luminescent guests has garnered significant attntion. This review discusses the research progress and trends in the realm of CPL liquid crystal systems，systematically summarizing the interactions between chiral liquid crystal matrices and luminescent guests （such as organic dyes，coloidal semiconductor quantum dots，carbon quantum dots， perovskite nanocrystals，and upconversion materials），and elucidating the structural characteristics and performance of these composite systems.Finally，it explores the extensive application prospects of CPL liquid crystal materials in information security，3D displays，asymmetric synthesis，circular polarization laser，and biosensing，while also contemplating their future directions and potential applications.

Key words： circularly polarized luminescence；chiral liquid crystal； luminescence dissymmetry factor; application of circularly polarized light

1引言

手性，是指一个物体不能与其镜像重合的性质，在自然界中广泛存在[1]。（剩余27663字）