文献类型：期刊文献

英文题名：Programmable polarization and structural color in a stretchable luminescent chiral liquid crystal elastomer

作者：Ren, Yiran[1];Liu, Xuan[1];Pei, Xiaoqi[1];Liu, Sunqian[1];Zhan, Yuxing[1];Yuan, Conglong[1];Hu, Honglong[1];Zheng, Zhi-Gang[1];Li, Quan[2,3,4]

机构：[1]East China Univ Sci & Technol, Sch Phys, Shanghai, Peoples R China;[2]Southeast Univ, Inst Adv Mat, Nanjing, Peoples R China;[3]Southeast Univ, Sch Chem & Chem Engn, Nanjing, Peoples R China;[4]Kent State Univ, Mat Sci Grad Program, Kent, OH 44242 USA

年份：2025

卷号：3

期号：4

外文期刊名：RESPONSIVE MATERIALS

收录：WOS:【ESCI(收录号:WOS:001619758800001)】；

基金：The authors acknowledge the support from the National Key Research and Development Program of China (2022YFA1203700), the Basic Science Center of National Natural Science Foundation (T2488302), the National Natural Science Foundation of China (grant no. 61822504, 62035008, 62275081, 22305079, and 62505085), the Innovation Program of Shanghai Municipal Education Commission, Scientific Committee of Shanghai (2021-01-07-00-02-E00107) and "Shuguang Program" of Shanghai Education Development Foundation and Shanghai Municipal Education Commission (21SG29), the Chenguang Program of Shanghai Education Development Foundation and Shanghai Municipal Education Commission (24CGA29), the Shanghai Sailing Program (23YF1409000 and 24YF2709100), the Postdoctoral Fellowship Program of CPSF (GZB20240218), Jiangsu Innovation Team Program, and the Fundamental Research Support for the Central Universities.

语种：英文

外文关键词：circularly polarized luminescence; dissymmetry factors; liquid crystal elastomers; quantum yield; tunablity

摘要：Flexible luminescent materials, especially those exhibiting circularly polarized luminescence (CPL), have attracted increasing attention in wearable electronics, optical sensing, and information encryption owing to their adaptable responsiveness and on-demand tunable emission. However, the simultaneous achievement of high luminescence dissymmetry factor and efficiency in flexible materials remains a fundamental challenge, as it requires balancing chiral assembly against self-quenching. Herein, we construct a chiral liquid crystal elastomer film that integrates chirality, fluorescence, and elastomeric responsiveness into a single multifunctional material. Specifically, this tunable one-dimensional photonic crystal exhibits three critical improvements: (i) substantial enhancement of photoluminescence quantum yield through homogeneous fluorophore distribution within the elastomeric matrix, (ii) significant improvement of circularly polarized light emission achieved by precise bandgap-fluorescence spectral matching, which achieves high luminescence dissymmetry factor, and (iii) reversible polarization modulation realized via strain-responsive bandgap with excellent fatigue-resistant. The combination of broad multicolor tunability CPL and robust fatigue-resistant deformation enables the successful fabrication of a triplex flexible photonic encryption prototype through strain engineering. This study broadens the applicability of chiral photonic materials in flexible optoelectronics and establishes a generalizable strategy for engineering adaptive photonic films.