文献类型：期刊文献

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

作者：Jiang, Ping[1,2];Ding, Bingbing[1,2];Li, Tao[1,2];Wang, Chao[1,2];Wang, Ziyi[1,2];Liu, Wenbin[3];Ma, Xiang[1,2]

机构：[1]East China Univ Sci & Technol, Frontiers Sci Ctr Materiobiol & Dynam Chem, Sch Chem & Mol Engn, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Feringa Nobel Prize Scientist Joint Res Ctr, Frontiers Sci Ctr Materiobiol & Dynam Chem, Sch Chem & Mol Engn, Shanghai 200237, Peoples R China;[3]Shanghai Res Inst Criminal Sci & Technol, Shanghai Key Lab Crime Scene Evidence, Shanghai 200072, Peoples R China

年份：2025

卷号：68

期号：6

起止页码：2533

外文期刊名：SCIENCE CHINA-CHEMISTRY

收录：;EI(收录号：20250717847870);WOS:【SCI-EXPANDED(收录号:WOS:001404852200001)】；

基金：This work was 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), and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：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 & ouml;rster resonance energy transfer, exhibiting a red delayed fluorescence. Besides, when incorporating the coumarin derivatives into doping system, distinct 1CT*&3CT* 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.