期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 57, 期 39, 页码 12727-12732出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201806861
关键词
alkyl chains; mechanoluminescence; solar-renewable
资金
- NSFC [51733010, 21672267, 51603232, 61605253]
- Guangdong Natural Science Funds for Distinguished Young Scholar [2017B030306012]
- Science and Technology Planning Project of Guangdong [2015B090913003]
- Fundamental Research Funds for the Central Universities
Mechanoluminescence (ML) materials are environmentally friendly and emit light by utilizing mechanical energy. This has been utilized in light sources, displays, bioimaging, and advanced sensors. Organic ML materials are strongly limited to application by insitu unrepeatable ML. Now, insitu solar-renewable organic ML materials can be formed by introducing a soft alkyl chain into an ML unit. For the first time, the ML from these polycrystalline thin films can be iteratively produced by simply recrystallizing the fractured crystal insitu after a contactless exposure to sunlight within a short time (<= 60s). Additionally, their ML color and lifetime can be also easily tuned by doping with organic luminescent dyes. Therefore, large-area sandwich-type organic ML devices can be fabricated, which can be repeatedly used in a colorful piezo-display, visual handwriting monitor, and sensitive optical sensor, showing a lowest pressure threshold for ML of about 5kPa.
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