期刊
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
卷 6, 期 17, 页码 3429-3436出版社
AMER CHEMICAL SOC
DOI: 10.1021/acs.jpclett.5b01090
关键词
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类别
资金
- National Science Foundation of China [51173018, 21490570, 21490574]
- Fundamental Research Funds for the Central Universities
- Program for Changjiang Scholars and Innovative Research Team in University
- National Basic Research Program of China (973 Program) [2013CB834701]
- Research Grants Council of Hong Kong [16305015, 16301614, N_HKUST604/14]
- University Grants Committee of Hong Kong [AoE/P-03/08]
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.
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