文献类型：期刊文献

英文题名：Pure organic electrophosphorochromism system

作者：Gao, Ya-Ting[1];Zhu, Yi-Lin[2];Wang, Xiao-Yuan[1];Liang, Li-Ya[1];Liu, Meng-Li[3];Chang, Shuai[1];Xu, Han-Bin[1];Li, Da-Wei[1];Chen, Bin-Bin[1]

机构：[1]East China Univ Sci & Technol, Key Lab Adv Mat, Shanghai Key Lab Funct Mat Chem,Sch Chem & Mol Eng, Feringa Nobel Prize Sci Joint Res Ctr,Frontiers Sc, Shanghai 200237, Peoples R China;[2]Xi An Jiao Tong Univ, Inst Biomed Photon & Sensing, Sch Life Sci & Technol, Xian 710049, Peoples R China;[3]Chinese Univ Hong Kong, Dept Affiliated Hosp 2, Shenzhen CUHK Shenzhen, Sch Med, Shenzhen 518172, Peoples R China

年份：2025

卷号：36

期号：11

外文期刊名：CHINESE CHEMICAL LETTERS

收录：;WOS:【SCI-EXPANDED(收录号:WOS:001567641000003)】；

基金：The authors appreciate the financial support from the National Natural Science Foundation of China (No. 22176058) , Science and Technology Commission of Shanghai Municipality (Nos. 24DX140 020 0 , 22ZR141680 0 , and 23ZR141610 0) , the Program of Introducing Talents of Discipline to Universities (No. B16017) , and the Fundamental Research Funds for the Central Universities (No. 222201717003) . We thank the Research Center of Analysis and Test of East China University of Science and Technology for help with the characterization.

语种：英文

外文关键词：Electrophosphorochromism; Host-guest doping; Room temperature phosphorescence; Electrically-induced red-shifted emission; White light emitting diodes

摘要：Electrochromic phosphorescent materials have recently attracted much attention, however, achieving the efficient electrophosphorochromism in pure organic materials is highly challenging and has not been reported yet. Herein, a kind of pure organic host-guest system (BA@CzPA) is constructed by one-pot in-situ melt blending of (9-phenyl-9H-carbazol-2-yl)boronic acid (CzPA) and boric acid (BA). Because of the efficient intersystem crossing promoted by covalent, hydrogen bonding, and confinement effect, the proposed BA@CzPA exhibit the superior room temperature phosphorescence (RTP) efficiency, including an ultralong lifetime of up to 4.23 s and a high phosphorescent quantum yield of 10.9 %. Importantly, the BA@CzPA have a unique electrophosphorochromism property, and their electrically-induced RTP emission can gradually red-shift from 440 nm to 548 nm as the current density increases, which is attributed to the transformation of host matrices of BA@CzPA from metaboric acid to B2O3 under the electrical stimuli. This finding provides us not only with a new idea to develop pure organic electrophosphorochromism materials with high RTP efficiency, but also with a powerful strategy to fabricate correlation color temperature tunable white light emitting diodes. (c) 2025 Published by Elsevier B.V. on behalf of Chinese Chemical Society and Institute of Materia Medica, Chinese Academy of Medical Sciences.