文献类型：期刊文献

英文题名：Achieving Ultralong Room-Temperature Phosphorescence Via Single-Bond Locking Planarization Strategy

作者：Zhou, Lei[1,2];Mu, Shunxing[1,2];Ma, Liangwei[1,2];Jiang, Ping[1,2];He, Zhenyi[1,2];Song, Jinming[1,2];Ma, Xiang[1,2]

机构：[1]East China Univ Sci & Technol, Key Lab Adv Mat, Shanghai 200237, Peoples R China;[2]East China Univ Sci & Technol, Feringa Noble Prize Scientist Joint Res Ctr, Sch Chem & Mol Engn, Frontiers Sci Materiobiol & Dynam Chem, Shanghai 200237, Peoples R China

年份：2024

卷号：6

期号：12

起止页码：5384

外文期刊名：ACS MATERIALS LETTERS

收录：;EI(收录号：20244617364890);WOS:【SCI-EXPANDED(收录号:WOS:001351702200001)】；

基金：This work was financially supported by the National Key Research and Development Program of China (grant no. 2022YFB3203500), the National Natural Science Foundation of China (22125803, T2488302, 22020102006, and 22305080), and the Fundamental Research Funds for the Central Universities.

语种：英文

外文关键词：Concretes - Doping (additives) - Fluorescence - II-VI semiconductors - Light sensitive materials - Nanocrystals - Phosphorescence - Photoluminescence - Quantum yield

摘要：Ultralong room-temperature phosphorescence (URTP) materials have been widely studied due to their broad applications. However, achieving phosphorescent materials with ultralong lifetimes is engaging and challenging. In this work, the indolo[3,2,1-j,k]carbazole (ICZ) with excellent planarity is obtained through twice single-bond locking on triphenylamine (TPA). Doping ICZ into a rigid matrix, URTP materials with a lifetime of 3.24 s and a photoluminescence quantum yield of 37.37% is successfully prepared.. The analysis of single-crystal, temperature-dependent photophysical characterization, Huang-Rhys factor, and theoretical calculations demonstrates that it is possible to make the molecules more planar and rigid by single-bond locking, which can inhibit the structural relaxation of the excited state and thus reduce the nonradiative transition to generate URTP. In addition, we achieve full-color afterglow by energy transfer. The potential applications of anticounterfeiting and optoelectronic information display of these URTP materials have been conducted. This work is an important reference for the construction of URTP materials.