文献类型：期刊文献

英文题名：Photoresponsive aggregation-induced emission polymer film for anti-counterfeiting

作者：Yang, Hong;Li, Mengqi;Zhao, Weijun[1];Guo, Zhiqian;Zhu, Wei-Hong

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Feringa Nobel Prize Scientist Joint Res Ctr, Shanghai Key Lab Funct Mat Chem,Key Lab Adv Mat, Shanghai 200237, Peoples R China; East China Univ Sci & Technol, Sch Chem & Mol Engn, Feringa Nobel Prize Scientist Joint Res Ctr, Inst Fine Chem,Joint Int Res Lab Precis Chem & Mo, Shanghai 200237, Peoples R China

年份：2021

卷号：32

期号：12

起止页码：3882

外文期刊名：CHINESE CHEMICAL LETTERS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000771784000032)】；

基金：This work was financially supported by the National Natural Science Foundation of China for Science Center Program (No. 21788102), Creative Research Groups (No. 21421004) and Key Project (No. 21636002), Shanghai Pujiang Program (No. 20PJ1402900), and National key Research and Development Program (No. 2016YFA020030 0), Shanghai Municipal Science and Technology Major Project (No. 2018SHZDZX03), and Program of Introducing Talents of Discipline to Universities (No. B16017).

语种：英文

外文关键词：Aggregation-induced emission; Photoresponsive luminescence; Diarylethene; Photochromism; Polymer film; Anti-counterfeiting

摘要：The development of solid-state smart materials, in particular those showing photoresponsive luminescence, is highly desirable for their cutting edge applications in displays, sensors, data-storage, and anti-counterfeiting. However, to achieve both excellent photoresponsive performance and bright luminescence in solid state remains challenge. Herein, we integrate a novel photochromic fluorophore YL into flexible polymer chains, thereby enabling the resultant polymer PYL with reversible photoisomerization upon aggregation. Remarkably, the polymer PYL possesses excellent photochromic properties and aggregation-induced emission (AIE) activity, which can be attributed to the photoactive YL moiety. Upon light exposure, its film exhibits reversibly off-to-on fluorescent modulation with quick response, high emission efficiency and signal contrast, sharply different from the weak emission in solution. The novel photoresponsive AIE polymer with invisible/visible color and fluorescence transformation allows for advanced anti-counterfeiting applications. This work provides an efficient platform for constructing solid-state photocontrollable luminescent materials. (C) 2021 Published by Elsevier B.V. on behalf of Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences.