Crystal-State Photochromism and Dual-Mode Mechanochromism of an Organic Molecule with Fluorescence, Room-Temperature Phosphorescence, and Delayed Fluorescence

被引：105
|
作者：
Huang, Lili [1 ]
Liu, Lei [1 ]
Li, Xianjiang [3 ]
Hu, Huan [1 ]
Chen, Mingxing [2 ]
Yang, Qingyuan [1 ]
Ma, Zhiyong [1 ]
Jia, Xinru [2 ]
机构：
[1] Beijing Univ Chem Technol, State Key Lab Organ Inorgan Composites, Coll Chem Engn, Beijing 100029, Peoples R China
[2] Peking Univ, Coll Chem & Mol Engn, Beijing Natl Lab Mol Sci, Key Lab Polymer Chem & Phys,Minist Educ, Beijing 100871, Peoples R China
[3] Natl Inst Metrol, Food Safety Lab, Div Metrol Chem, Beijing 100029, Peoples R China
来源：
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION | 2019年 / 58卷 / 46期
基金：
中国国家自然科学基金; 北京市自然科学基金;
关键词：
dimers; mechanochromism; photochromism; room-temperature phosphorescence; SINGLE-CRYSTAL; EMISSION; MECHANOLUMINESCENCE; BEHAVIOR;
D O I：
10.1002/anie.201908567
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A D-A-D ' type pure organic molecule, named ODFRCZ, has unique triple-emission character covering fluorescence, phosphorescence, and delayed fluorescence (DF). The phosphorescence of ODFRCZ has a rather long lifetime of about 350 ms at room temperature. One dimer of ODFRCZ with enhanced parallel molecular packing acts more effectively to prompt ISC processes, which further generates room-temperature phosphorescence (RTP), owing to the larger transition dipole moment and closer energy level between S-1 and T-n. ODFRCZ is a rare example of an organic RTP molecule that shows dual-stimuli responsiveness of dual-mode mechanochromism (fluorescence red-shift and RTP/DF on-off switch) and reversible crystal-state photochromism. This work may broaden the knowledge for stimuli-responsive RTP organic molecules and lay the foundation for their wide-scale applications.
引用
收藏
页码：16445 / 16450
页数：6
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