Mechanochromic Luminescence of Aggregation-Induced Emission Luminogens

被引：393
作者：
Dong, Yong Qiang [1 ]
Lam, Jacky W. Y. [2 ,3 ,4 ]
Tang, Ben Zhong [2 ,3 ,4 ,5 ]
机构：
[1] Beijing Normal Univ, Dept Chem, Beijing Key Lab Energy Convers & Storage Mat, Beijing 100875, Peoples R China
[2] Hong Kong Univ Sci & Technol, Div Life Sci, Inst Adv Study, State Key Lab Mol Neurosci,Dept Chem,Inst Mol Fun, Kowloon, Hong Kong, Peoples R China
[3] Hong Kong Univ Sci & Technol, Div Biomed Engn, Kowloon, Hong Kong, Peoples R China
[4] HKUST Shenzhen Res Inst, South Area, Shenzhen 518057, Peoples R China
[5] S China Univ Technol, Guangdong Innovat Res Team, SCUT HKUST Joint Res Lab, State Key Lab Luminescent Mat & Devices, Guangzhou 510640, Guangdong, Peoples R China
来源：
JOURNAL OF PHYSICAL CHEMISTRY LETTERS | 2015年 / 6卷 / 17期
基金：
美国国家科学基金会;
关键词：
ENHANCED EMISSION; MULTIPLE COLORS; FLUORESCENCE; TETRAPHENYLETHENE; VAPOCHROMISM; DERIVATIVES; ABSORPTION; DESIGN;
D O I：
10.1021/acs.jpclett.5b01090
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Mechanochromic (MC) luminogens have found promising applications in mechanosensors, security papers, and optical storage for their change in emission behaviors in response to mechanical stimuli. Examples on MC luminescent materials are rare before the discovery of MC luminescence in aggregation-induced emission (AIE) luminogens. The twisted conformations of ATE luminogens (AIEgens) with appropriate crystallization capability afford loosely packing patterns, which facilitates their phase transformation in the solid state. The amorphous films of AIEgens exhibit enhanced emission intensity upon pressurization due to the increased molecular interactions, whereas crystals of AIEgens exhibit MC luminescence due to their amorphization by mechanical stimuli. AIEgens enrich the type of MC luminogens but those showing high emission contrast and multicolor emission switching and those working in a turn-on emission mode are seldom reported. Disclosure of the design strategy of high performance MC luminogens and exploration of their high-tech applications may be the future research directions for MC luminogens.
引用
收藏
页码：3429 / 3436
页数：8
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