Efficient photo-induced RTP materials based on phenothiazine and polycyclic aromatic hydrocarbons:Tunable emission color and thermal stimulus response

作     者：Jiayi Liang Jie Yang Yunsheng Wang Mingda Shan Zhenjiang Liu Jia Ren Manman Fang Zhen Li 梁嘉怡;杨杰;王云生;单鸣达;刘振江;任佳;方曼曼;李振

作者机构：Institute of Molecular Aggregation ScienceTianjin UniversityTianjin 300072China Hubei Key Lab on Organic and Polymeric Opto-Electronic MaterialsDepartment of ChemistryWuhan UniversityWuhan 430072China Joint School of National University of Singapore and Tianjin UniversityInternational Campus of Tianjin UniversityBinhai New CityFuzhou 350207China 

出 版 物：《Science China Materials》 (中国科学（材料科学）（英文版）)

年 卷 期：2024年第67卷第9期

页      面：2778-2788页

核心收录：

学科分类：1201[管理学-管理科学与工程(可授管理学、工学学位)] 070207[理学-光学] 0809[工学-电子科学与技术（可授工学、理学学位）] 0817[工学-化学工程与技术] 08[工学] 0703[理学-化学] 0822[工学-轻工技术与工程] 0702[理学-物理学] 

基　　金：supported by the National Natural Science Foundation of China(52273191,22235006) the Natural Science Foundation of Tianjin City(22JCYBJC00760) the Starting Grants of Tianjin University and Tianjin Government the Independent Innovation Fund of Tianjin University(2023XPD-0014) 

主　　题：conformation phenothiazine derivatives room-temperature phosphorescence dual RTP emissions 

摘      要：The development of photo-responsive room temperature phosphorescence(RTP)materials has attracted more and more attention for their broad application *** now,it is still difficult to obtain the related ma-terials with both high efficiency and long *** the lacking of emission in blue and red regions also largely re-stricts their further *** this work,we reported a new strategy to maintain both high efficiency and long lifetime in RTP luminogens through the integration of phenothiazine to facilitate n-π*transition and polycyclic aromatic hydro-carbons(PAHs)dominated byπ-π**** they were doped into polymer matrix,full color photo-induced RTP materials were obtained for the changedπ-conjugation of *** them,PTri@PVP showed the best RTP per-formance with phosphorescence efficiency of 20.73%and lifetime up to 819 ***,after turning off the ul-traviolet-visible(UV)irradiation upon this system,time-de-pendent phosphorescence afterglow from green to blue was exhibited,which was found to originate from two distinct molecular conformations and could be further regulated by thermal ***,multiple anti-counterfeiting applications,including screen printing,multi-color patterns and multi-dimensional information encryption,were suc-cessfully demonstrated.