Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 59, Issue 9, Pages 3739-3745Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201915556
Keywords
crystal engineering; full-colour emission; luminescence; soft molecule; triplet-exciton
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Funding
- National Natural Science Foundation of China [NSFC: 51733010, 61605253, 21672267, 51973239]
- Science and Technology Planning Project of Guangdong [2015B090913003]
- Fundamental Research Funds for the Central Universities
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Soft luminescent materials are attractive for optoelectronic applications, however, switching dominant chromophores for property enrichment remains a challenge. Herein, we report the first case of a soft organic molecule (DOS) featuring selective expression of chromophores. In response to various external stimuli, different chromophores of DOS can take turns working through conformation changes, exhibiting full-colour emissions peaking from 469 nm to 583 nm from ten individual single crystals. Dynamic triplet-exciton behaviours including thermally activated delayed fluorescence (TADF), room-temperature phosphorescence (RTP), mechanoluminescence (ML), and distinct mechano-responsive luminescence (MRL) can all be realized. This novel designed DOS molecule provides a multifunctional platform for detection of volatile organic compounds (VOCs), multicolour dynamic displays, sensing, anticounterfeiting, and hopefully many others.
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