文献类型：期刊文献

英文题名：Reversible Multilevel Stimuli-Responsiveness and Multicolor Room-Temperature Phosphorescence Emission Based on a Single-Component System

作者：Song, Jinming[1];Ma, Liangwei[1];Sun, Siyu[1];Tian, He[1];Ma, Xiang[1]

机构：[1]East China Univ Sci Technol, Sch Chem & Mol Engn, Key Lab Adv Mat & Feringa Noble Prize Scientist J, Frontiers Sci Mat ogy & Dynam Chem, Meilong Rd 130, Shanghai 200237, Peoples R China

年份：2022

卷号：61

期号：29

外文期刊名：ANGEWANDTE CHEMIE-INTERNATIONAL EDITION

收录：;EI(收录号：20222212181501);WOS:【SCI-EXPANDED(收录号:WOS:000803599300001)】；

基金：We gratefully acknowledge the financial support from NSFC (21788102, 22125803, 22020102006, and 21871083), project support by the Shanghai Municipal Science and Technology Major Project (Grant No.2018SHZDZX03), Program of Shanghai Academic/Technology Research Leader (20XD1421300), and "Shu Guang" project supported by Shanghai Municipal Education Commission and Shanghai Education Development Foundation (19SG26), Fundamental Research Funds for the Central Universities. The authors thank B. Zhu, T. Jiang, Z. Huang, Y. Zhao, Q. Xu and Y. Wu for helpful discussion.

语种：英文

外文关键词：High Quantum Yield; Multicolor; Multilevel Stimuli-Responsiveness; Room-Temperature Phosphorescence

摘要：There are limited reports about the transformation of pure organic room-temperature phosphorescence (RTP) materials with multilevel stimuli-responsiveness at different RTP emission wavelengths under external stimuli. It is difficult to ensure efficient intersystem crossing (ISC) in different states of a single-component system. This research reports the conversion of the organic single-component small molecule 1,2-bis(4-alkoxyphenyl)ethane-1,2-dione (N-BOX) with multilevel stimuli-responsiveness between high-efficiency blue and yellow RTP by grinding or thermal annealing N-BOX crystals. The RTP emission of N-BOX in the crystalline state was easy to adjust by external stimuli (grinding or thermal annealing) due to its non-compact packing, which led to a phase transition and generated unique multilevel stimuli-responsiveness. In particular, the RTP quantum yield of 7-BOX with multilevel stimuli-responsiveness reached 68.4 %, which provides an opportunity for regulation of smart optical materials based on pure organic RTP.