Dynamic color‐tunable ultra‐long room temperature phosphorescence polymers with photo‐chromism and water‐stimuli response for multilevel anti‐counterfeiting
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
Affiliations
Xiao Ma
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
Tian‐Jiao Ye
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
Han‐Jiang Yang
Department State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Science Fuzhou Fujian China
Guang‐Kun Ling
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
Danfeng Wang
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
Jia‐Shu Li
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
Peiyang Gu
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
Liang‐Jin Xu
Department State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Science Fuzhou Fujian China
Tian‐Lu Sheng
Department State Key Laboratory of Structural Chemistry Fujian Institute of Research on the Structure of Matter Chinese Academy of Science Fuzhou Fujian China
Fu‐Rong Lin
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
Run‐Fu Shen
Zhejiang Engineering Research Center of Fat‐soluble Vitamin Shaoxing University Shaoxing Zhejiang China
Qichun Zhang
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
Abstract 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 pyridinium bromide L block or viologen‐based photo‐chromic V block into polyvinyl alcohol matrixes, the water‐stimuli‐responsive color‐tunable URTP polymer films with afterglow of up to 8 s and the reversible viologen‐based photochromic polymer films have been developed. More significantly, a series of dynamic color‐tunable URTP polymer films 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.
