Photoresponsive aggregation-induced emission polymer film for anti-counterfeiting  

作　　者：Hong Yang Mengqi Li Weijun Zhao Zhiqian Guo Wei-Hong Zhu 

机构地区：[1]Shanghai Key Laboratory of Functional Materials Chemistry,Key Laboratory for Advanced Materials and Institute of Fine Chemicals.Joint International Research Laboratory of Precision Chemistry and Molecular Engineering,Feringa Nobel Prize Scientist Joint Research Center,School of Chemistry and Molecular Engineering,East China University of Science&Technology,Shanghai 200237,China

出　　处：《Chinese Chemical Letters》2021年第12期3882-3885,共4页中国化学快报（英文版）

基　　金：financially supported by the National Natural Science Foundation of China for Science Center Program (No. 21788102);Creative Research Groups (No. 21421004);Key Project (No. 21636002);Shanghai Pujiang Program (No. 20PJ1402900);National key Research and Development Program (No. 2016YFA0200300);Shanghai Municipal Science and Technology Major Project (No. 2018SHZDZX03);Program of Introducing Talents of Discipline to Universities (No. B16017)。

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 anticounterfeiting. 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 aggregationinduced 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.

关 键 词：Aggregation-induced emission Photoresponsive luminescence DIARYLETHENE PHOTOCHROMISM Polymer film ANTI-COUNTERFEITING 

分 类 号：TB383.2[一般工业技术—材料科学与工程]