文献类型：期刊文献

中文题名：Fine regulation of charge recombination for multi-color persistent luminescence

作者：Ping Jiang[1];Bingbing Ding[1];Tao Li[1];Chao Wang[1];Ziyi Wang[1];Wenbin Liu[2];Xiang Ma[1]

机构：[1]Key Laboratory for Advanced Materials and Feringa Nobel Prize Scientist Joint Research Center,Frontiers Science Center for Materiobiology and Dynamic Chemistry,School of Chemistry and Molecular Engineering,East China University of Science and Technology,Shanghai 200237,China;[2]Shanghai Key Laboratory of Crime Scene Evidence,Shanghai Research Institute of Criminal Science and Technology,Shanghai 200072,China

年份：2025

卷号：68

期号：6

起止页码：2533

中文期刊名：Science China Chemistry

外文期刊名：中国科学(化学英文版)

基金：supported by the National Key Research and Development Program of China(2022YFB3203500);the National Natural Science Foundation of China(22125803,T2488302,22020102006,22205062);the Science and Technology Commission of Shanghai Municipality(24DX1400200);the Guangxi Department of Science and Technology(AA23062016);the Fundamental Research Funds for the Central Universities。

语种：英文

中文关键词：room-temperature phosphorescence;long persistent luminescence;exciplex;energy transfer;charge transfer state;afterglow

摘要：Pure organic room-temperature phosphorescence(RTP)has drawn broad attention due to its long persistent luminescence and large Stokes shift.Although the doping strategy has become one of the most effective methods to construct organic RTP systems,there is still some fuzziness of impurities,mechanisms and luminescence regulation.This study develops a series of doping RTP systems based on exciplex,in which BPC@PPZ(where BPC is N-(4-bromophenyl)-carbazole,PPZ is 10-phenyl-10H-phenothiazine)achieved the highest quantum yield of 36.3%,while BPC@CE(where CE is coronene)showed the longest lifetime of 628.5 ms.The relevant data verify the mechanism that RTP comes from the charge transfer(CT)state of exciplex.Further,the introduction of Nile Red into the exciplex system results in the triple-singlet F?rster resonance energy transfer,exhibiting a red delayed fluorescence.Besides,when incorporating the coumarin derivatives into doping system,distinct ^(1)CT*&^(3)CT*states are generated through the CT process,accompanying a brand-new long persistent luminescence excited by visible light.These findings present an approach to regulate the CT state for achieving different persistent luminescence in the multicomponent system.