Photoactivated Circularly Polarized Room-Temperature Phosphorescence from Phenoselenazine Derivative and Its Application in Information Security  

作　　者：Shiyao Fu Yi Chen Yujun Xie Zhen Li 

机构地区：[1]Institute of Molecular Aggregation Science,Tianjin University,Tianjin 300072,China [2]Joint Schoolof National University of Singapore and Tianjin University,International Campus of Tianjin University,Binhai New City Fuzhou,Fujian 350207,China [3]Hubei Key Lab on Organic and Polymeric Opto-Electronic Materials,Department of Chemistry,Wuhan University,Wuhan,Hubei 430072,China

出　　处：《Chinese Journal of Chemistry》2024年第20期2499-2506,共8页中国化学（英文版）

基　　金：National Natural Science Foundation of China(No.21905198);starting Grants of Tianjin University,Tianjin Government for financial support.

摘　　要：Room-temperature phosphorescence(RTP)materials have experienced rapid development due to their potential in organic light-emitting diode,information security,bioimaging,etc.However,the design of chiral organic phosphors with circularly polarized RTP(CPP)property remains a formidable challenge.Here,we introduce a chiral perturbation approach using a combination of chiral binaphthol and phenoselenazine derivative to achieve CPP.The photoactivated CPP in polystyrene(PS)film demonstrates a luminescence dissymmetry factor(glum),emission efficiency,and RTP lifetime up to 9.32×10^(–3),27.0%,and 40.0 ms,respectively.The remarkable sensitivity of PS film to oxygen and temperature enables the adjustable emission colors,ranging from green to offwhite and blue under varying conditions.The doping systems,utilizing hosts of triphenylphosphine and 9-phenylcarbazole,demonstrate an extended CPP lifetime of 85.9 ms and exhibit a persistent mechanoluminescence property with low pressure response threshold as low as 0.15 N.The information security provided by this CPP material was attained via the using of diverse emission colors and afterglow generated by distinct UV irradiation times and host materials.Alternately,it can also be achieved by observing different emission patterns using R-and L-polarizer.The research has presented a reliable approach for producing CPP materials with high emission efficiency and glum.

关 键 词：Room-temperature phosphorescence Circularly polarized luminescence Spin-orbit coupling Host-guest systems Multi-stimuli-responsive luminescence Phenoselenazine 

分 类 号：O62[理学—有机化学]