文献类型：期刊文献

英文题名：Host Dearomatization for Prolonging Room-Temperature Phosphorescence

作者：Qin, Jialin[1];Wu, Yidan[2,3];Zhou, Lei[1,2];Liu, Xiujun[1,2];Yan, Xiaonan[1,2];Liu, Hao[1,2];He, Zhenyi[1,2];Tian, He[1,2];Ma, Xiang[1,2]

机构：[1]East China Univ Sci & Technol, Inst Fine Chem, Frontiers Sci Ctr Materiobiol & Dynam Chem, Sch Chem & Mol Engn,Key Lab Adv Mat, Shanghai, Peoples R China;[2]East China Univ Sci & Technol, Inst Fine Chem,Sch Chem & Mol Engn, Feringa Nobel Prize Scientist Joint Res Ctr, Frontiers Sci Ctr Materiobiol & Dynam Chem, Shanghai, Peoples R China;[3]Tsinghua Univ, Dept Engn Mech, Key Lab Thermal Sci & Power Engn, Minist Educ, Beijing, Peoples R China

年份：2026

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20263221264774);Scopus(收录号：2-s2.0-105046653429);WOS:【SCI-EXPANDED(收录号:WOS:001840458100001)】；

基金：We gratefully acknowledge the financial support from the National Natural Science Foundation of China (22125803, T2488302), the Science and Technology Commission of Shanghai Municipality (24DX1400200), the Guangxi Department of Science and Technology (AA23062016), the Fundamental and Interdisciplinary Disciplines Breakthrough Plan of the Ministry of Education of China (JYB2025XDXM404), and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：dearomatization; host-guest doped; room-temperature phosphorescence; triplet-triplet energy transfer

摘要：Host-guest doping has emerged as a powerful platform for constructing organic room-temperature phosphorescence (RTP) materials, owing to its structural tunability and facile fabrication. However, molecular design has largely focused on guest molecules, while host screening lacks systematic theoretical guidance. Here, we propose a host dearomatization strategy that prolongs the afterglow of doped systems. By converting the benzene ring into a cyclohexane structure in the host, the RTP lifetimes of the doped systems are significantly prolonged, with the maximum enhancement reaching a 58.65-fold increase. Mechanistic studies indicate that the extended lifetime arises from enhanced triplet-triplet energy transfer and electronic coupling, enabled by the reduced intermolecular distance upon dearomatization. This strategy exhibits universality across diverse host and guest systems. These doped systems are further applied in time-resolved information encryption systems and switchable adhesive materials. Starting from the host molecular framework, this study provides a universal and efficient strategy for the rational design of organic RTP materials.