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

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外文摘要：Chiroptical switches based on circularly polarized luminescence(CPL)have shown the promising appli-cations in advanced information technologies.Herein,a pair of lanthanide coordination polymer enan-tiomers[Eu2(LR)3(BTFPO)2]n and[Eu2(Ls)3(BTFPO)2]n with light-regulated CPL property are designed,which are assembled by a chiral binuclear triple-stranded Eu3+helicates[Eu2(LR/s)3]coordinated with two photochromic triphenylphosphine oxides(BTFPO).Upon the alternative UV and 526 nm light irradia-tion,the complexes show the reversible photochromism,PL and CPL responses.Notably,the luminescence dissymmetry factor,glum of 5D0→7F1(591 nm)transition shows an obvious increase from 0.19 to 0.29 before and after 275 nm light irradiation.Additionally,the emission from Eu3+center is not completely quenched in closed-ring state due to the low photocyclization(ΦO-C)quantum yield of the polymer.The partial maintenance of emissive intensity is of essential importance for the monitor of CPL signal.More importantly,the CPL photo-switching property of the complexes in solid hybrid film is maintained,and still displays the enhanced CPL emission in photostationary state.Further,the potential applications of the doping film in logic gate and anti-counterfeiting were investigated.

外文关键词：

Chiroptical switchesCoordination polymerCPLAnti-counterfeitingLogic gate

作者：

Mei Li、Yanyan Zhou、Jingya Li、Wenru Huang、Zhiwei Yao、Yuying Li、Ting Gao、Pengfei Yan、Hongfeng Li

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作者单位：

Key Laboratory of Functional Inorganic Material Chemistry,Ministry of Education,School of Chemistry and Materials Science,Heilongjiang University,Harbin 150080,China

State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization Institution,Baotou 014030,China

基金：

国家自然科学基金国家自然科学基金国家自然科学基金国家自然科学基金Science and Technology Plan of Inner Mongolia Autonomous RegionScientific Research Project of Basic Scientific Research Operating Expenses of Colleges and Universities in Heilongjiang ProvincScientific Research Project of Basic Scientific Research Operating Expenses of Colleges and Universities in Heilongjiang Provinc

项目编号：

522732635220321951872077520730802020GG01642021-KYYWF-00292021-KYYWF-0041

出版年：

2024

DOI：

10.1016/j.cclet.2023.108831

中国化学快报(英文版)

中国化学会

中国化学快报(英文版)

CSTPCD

影响因子：0.771

ISSN：1001-8417

年,卷(期)：2024.35(2)

参考文献量36