Dynamic color-tunable ultra-long room temperature phosphorescence polymers with photo-chromism and water-stimuli response for multilevel anti-counterfeiting  

作　　者：Xiao Ma Tian-Jiao Ye Han-Jiang Yang Guang-Kun Ling Danfeng Wang Jia-Shu Li Peiyang Gu Liang-Jin Xu Tian-Lu Sheng Fu-Rong Lin Run-Fu Shen Qichun Zhang 

机构地区：[1]Jiangsu Key Laboratory of Advanced Catalytic Materials and Technology,Advanced Catalysis and Green Manufacturing Collaborative Innovation Center,School of Petrochemical Engineering,Changzhou University,Changzhou,Jiangsu,China [2]Department State Key Laboratory of Structural Chemistry,Fujian Institute of Research on the Structure of Matter Chinese Academy of Science,Fuzhou,Fujian,China [3]Zhejiang Engineering Research Center of Fat-soluble Vitamin,Shaoxing University,Shaoxing,Zhejiang,China [4]Department of Materials Science and Engineering,Department of Chemistry,Center of Super-Diamond and Advanced Films(COSDAF)and Hong Kong Institute of Clean Energy,City University of Hong Kong,Hong Kong,China

出　　处：《Aggregate》2024年第5期320-330,共11页聚集体（英文）

基　　金：Priority Academic Program Development of Jiangsu Higher Education Institutions;Applied Basic Research Programs of Science and Technology Commission Foundation of Jiangsu Province,Grant/Award Number:BK20231340;Changzhou Introduction Program of Innovative Leading Talents,Grant/Award Number:CQ20220111;Natural Science Foundation of Jiangsu Province,Grant/Award Number:BK20170290;Natural Science Foundation of the Higher Education Institutions of Jiangsu Province,Grant/Award Number:17KJB150002;Opening Project of Zhejiang Engineering Research Center of Fat-soluble Vitamin,Grant/Award Number:202107;National Natural Science Foundation of China,Grant/Award Numbers:51803143,。

摘　　要：Developing dynamic color-tunable ultra-long room temperature phosphorescence(URTP)polymers with afterglow of over 1 s,photo-chromism,and multi-stimuli response for practical anti-counterfeiting and information security applications is attractive but very challenging.Herein,by doping multicolor phosphorescence pyri-dinium bromide L block or viologen-based photo-chromic V block into polyvinyl alcohol matrixes,the water-stimuli-responsive color-tunable URTP polymerfilms with afterglow of up to 8 s and the reversible viologen-based photochromic polymerfilms have been developed.More significantly,a series of dynamic color-tunable URTP polymerfilms with ultra-long afterglow of over 6 s,photo-chromism,and water-stimuli response have been successfully exploited by integrating L and V blocks into one polymer system.Mechanistic investigations have revealed that their photo-chromism mainly comes from the photo-generated viologen free radicals.Furthermore,their dynamic multilevel anti-counterfeiting applications have been demonstrated.These results pave the way to develop smarter multifunctional URTP materials for anti-counterfeiting and optical sensing.

关 键 词：ANTI-COUNTERFEITING PHOSPHORESCENCE PHOTOCHROMISM stimuli response ultralong viologen 

分 类 号：O63[理学—高分子化学]