文献类型：期刊文献

英文题名：Programming structural-colour modulation range of elastomer enables information storage

作者：Zhuang, Yingying[1,2];Liu, Xuan[1,2];Hu, Honglong[1,3];Zheng, Zhigang[1,2]

机构：[1]East China Univ Sci & Technol, Sch Phys, Shanghai, Peoples R China;[2]East China Univ Sci & Technol, Sch Mat Sci & Engn, Shanghai, Peoples R China;[3]East China Univ Sci & Technol, Sch Chem & Mol Engn, Shanghai, Peoples R China

年份：2024

卷号：51

期号：11

起止页码：1868

外文期刊名：LIQUID CRYSTALS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001255022800001)】；

基金：The work was supported by the National Key Research and Development Programme of China [2022YFA1203700], National Science Foundation of China [grant nos. 61822504, 62035008, 62275081 and 22305079], Innovation Programme 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], China Postdoctoral Science Foundation [2022M721143], Fellowship of China National Postdoctoral Programme for Innovative Talents [BX20230125], Shanghai Sailing Programme [23YF1409000].

语种：英文

外文关键词：Multiple structural colours; chiral photonic elastomer; mechanochromic; information storage; anti-counterfeiting

摘要：Cholesteric liquid crystal elastomers (CLCEs) has garnered significant attention in the field of information display and storage. Obtaining multiple structural colours in a single elastomer film is highly desirable but presents a considerable challenge. Here, we have successfully achieved manipulable range of structural colours in a CLCE film by ingeniously introducing the photopolymerisation during thiol-acrylate reaction process. This particular strategy involves triggering spatial shrinkage of the polymer network in a pre-designed region following solvent evaporation, resulting in a blue shift of the structural colour compared to the background. Consequently, we can construct multi-colour and multi-pattern elastomer films by precisely controlling the localised polymerisation. Notably, these patterns can be concealed in a reversible manner as the film undergoes a specific degree of elongation and can be restored when external force is removed. This work demonstrates a straightforward method of programming structural-colour modulation range, eliminating the need for material changes or intricate preparation processes, broadening the applications of stretchable elastomers in information storage, encryption, anti-counterfeiting, and dynamic photonics. {GRAPHICS].