Circularly polarized luminescence switch based on a photochromic europium(Ⅲ) helicate derived coordination polymer

作     者：Mei Li Yanyan Zhou Jingya Li Wenru Huang Zhiwei Yao Yuying Li Ting Gao Pengfei Yan Hongfeng Li Mei Li;Yanyan Zhou;Jingya Li;Wenru Huang;Zhiwei Yao;Yuying Li;Ting Gao;Pengfei Yan;Hongfeng Li

作者机构：Key Laboratory of Functional Inorganic Material ChemistryMinistry of EducationSchool of Chemistry and Materials ScienceHeilongjiang UniversityHarbin 150080China State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization InstitutionBaotou 014030China 

出 版 物：《Chinese Chemical Letters》 (中国化学快报（英文版）)

年 卷 期：2024年第35卷第2期

页      面：272-277页

核心收录：

学科分类：080801[工学-电机与电器] 0808[工学-电气工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：financially supported by the National Natural Science Foundation of China(Nos.52273263,52203219,51872077 and 52073080) Science and Technology Plan of Inner Mongolia Autonomous Region(No.2020GG0164) Scientific Research Project of Basic Scientific Research Operating Expenses of Colleges and Universities in Heilongjiang Province(Nos.2021-KYYWF-0029 and 2021-KYYWF-0041) 

主　　题：Chiroptical switches Coordination polymer CPL Anti-counterfeiting Logic gate 

摘      要：Chiroptical switches based on circularly polarized luminescence(CPL)have shown the promising applications in advanced information ***,a pair of lanthanide coordination polymer enantiomers[Eu_(2)(L^(R))_(3)(BTFPO)_(2)]_(n) and[Eu_(2)(L^(S))_(3)(BTFPO)_(2)]_(n) with light-regulated CPL property are designed,which are assembled by a chiral binuclear triple-stranded Eu^(3+) helicates[Eu_(2)(L^(R/S))_(3)]coordinated with two photochromic triphenylphosphine oxides(BTFPO).Upon the alternative UV and 526 nm light irradiation,the complexes show the reversible photochromism,PL and CPL ***,the luminescence dissymmetry factor,g lum of ^(5)D_(0)→^(7)F_(1)(591 nm)transition shows an obvious increase from 0.19 to 0.29 before and after 275 nm light ***,the emission from Eu^(3+) center is not completely quenched in closed-ring state due to the low photocyclization(Ф_(o-c))quantum yield of the *** partial maintenance of emissive intensity is of essential importance for the monitor of CPL *** importantly,the CPL photo-switching property of the complexes in solid hybrid film is maintained,and still displays the enhanced CPL emission in photostationary ***,the potential applications of the doping film in logic gate and anti-counterfeiting were investigated.