文献类型：期刊文献

英文题名：Multimode Stimuli-Responsive Room-Temperature Phosphorescence Achieved by Doping Butterfly-like Fluorogens into Crystalline Small-Molecular Hosts

作者：Zhang, Zhaozhi[1];Wang, Qijing[1];Zhang, Xinyi[1];Mei, Ju[1];Tian, He[1]

机构：[1]East China Univ Sci & Technol, Sch Chem & Mol Engn, Feringa Nobel Prize Scientist Joint Res Ctr, Key Lab Adv Mat ,Inst Fine Chem ,Frontiers Sci Ctr, Shanghai 200237, Peoples R China

年份：2024

卷号：4

期号：5

起止页码：1954

外文期刊名：JACS AU

收录：WOS:【ESCI(收录号:WOS:001226097700001)】；

基金：This research was funded by the National Natural Science Foundation of China (21788102, 22275055, 21875064, and 21790361), the Shanghai Science and Technology Commission Basic Project Shanghai Natural Science Foundation (21ZR1417600),the Shanghai Municipal Science and Technology Major Project (2018SHZDZX03),the Programme of Introducing Talents of Discipline to Universities(B16017), the Shanghai Science and Technology Committee (17520750100),and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：room-temperature phosphorescence; vibration-inducedemission; stimuli-responsiveness; crystallinity; N,N '-diphenyl-dihydrodibenzo[a,c]phenazines; anticounterfeitingand information encryption

摘要：Materials with stimuli-responsive purely organic room-temperature phosphorescence (RTP) exempt from exquisite molecular design and complex preparation are highly desirable but still relatively rare. Moreover, most of them work in a single switching mode. Herein, we employ a versatile host-guest-doped strategy to facilely construct efficient RTP systems with multimode stimuli-responsiveness without ingenious molecular design. By conveniently doping butterfly-like guests, namely, N,N '-diphenyl-dihydrodibenzo[a,c]phenazines (DPACs), featured with vibration-induced emission into the small-molecular hosts via various methods, RTP systems with finely tunable photophysical properties are readily obtained. Through systematic mechanistic studies and with the aid of a series of control experiments, we unveil the critical role of the host crystallinity in achieving efficient RTP. By virtue of the inherent environmental sensitivity of both RTP and fluorescence of the DPACs, our systems exhibit multiple-stimuli-responsiveness with the luminescence not only switching between the fluorescence and phosphorescence but also continuously changing in the fluorescence color. Advanced dynamic anticounterfeiting and multilevel information encryption is thereby realized.