Responsive hyperbranched poly(formyl-1,2,3-triazole)s toward quadruple-modal information security protection  

作　　者：Baixue Li Zhen Li Kai You Anjun Qin Ben Zhong Tang 

机构地区：[1]State Key Laboratory of Luminescent Materials and Devices,Guangdong Provincial Key Laboratory of Luminescence from Molecular Aggregates,Center for Aggregation Induced Emission,South China University of Technology,Guangzhou 510640,China [2]Shenzhen Institute of Molecular Aggregate Science and Engineering,School of Science and Engineering,The Chinese University of Hong Kong,Shenzhen 518172,China [3]Hong Kong Branch of Chinese National Engineering Research Center for Tissue Restoration and Reconstruction,The Hong Kong University of Science and Technology,Clear Water Bay,Kowloon,Hong Kong,China [4]School of Electromechanical Engineering,Guangdong University of Technology,Guangzhou 510006,China [5]Foshan Nanhai Guangdong Technology University CNC Equipment Cooperative Innovation Institute,Foshan 528225,China

出　　处：《Science China Chemistry》2022年第4期771-777,共7页中国科学（化学英文版）

基　　金：supported by the National Natural Science Foundation of China(21788102,21901075);the Natural Science Foundation of Guangdong Province(2016A030312002,2019B030301003);the Innovation and Technology Commission of Hong Kong(ITCCNERC14S01);support from the China Postdoctoral Science Foundation(2019M662889)。

摘　　要：Secrecy has received tremendous attention in modern information society. Innovative polymer-based fluorescent materials with multiple mode emission are quite desirable to achieve multistage data security. Herein, a series of soluble and thermally stable hyperbranched poly(formyl-1,2,3-triazole)s(hb-PFTAs) with high molecular weights were facilely prepared by catalyst-free polycycloaddition of aldehyde-activated internal triyne and diazides. Functional moieties of triphenylamine and binaphthyl could be incorporated into the polymers to offer them with unique fluorescence and circular dichroism properties, respectively.By taking advantage of activated ethynyl and aldehyde groups on their peripheries and in the internal branch chains, the hbPFTAs can undergo efficient single-and double-stage post-functionalization. More importantly, based on the remarkable fluorescence responses to hydrazine and hydrochloric acid, the hyperbranched polymers are featured with triple-mode fluorescent patterns and have been applied in quadruple-modal information encryption and storage with enhanced security and density. Collectively, this work not only enriches the structural diversity of the existing triazole-based material library, but also provides new polymeric materials for data and information security application.

关 键 词：activated internal triyne hyperbranched poly(formyl-1 2 3-triazole)s post-polymerization modification multilevel information security 

分 类 号：TQ317[化学工程—高聚物工业]