| Autor: |
Shanting, Liu, Yue, Yang, Dian-Dian, Deng, Xiao-Wen, Deng, Zhao, Chen, Xiao-Yan, Wang, Shouzhi, Pu |
| Rok vydání: |
2022 |
| Předmět: |
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| Zdroj: |
Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy. 274:121122 |
| ISSN: |
1386-1425 |
| DOI: |
10.1016/j.saa.2022.121122 |
| Popis: |
Mechanochromic luminophors with strong solid-state emission are promising candidates for high-contrast mechanochromic luminescence materials. Meanwhile, mechanically responsive luminogenic molecules with tricolor switching are highly desirable but are seldom reported. In this work, three anthracene-based donor-acceptor-π-donor (D-A-π-D) type benzothiadiazole derivatives were designed and synthesized. These luminogens showed remarkable aggregation-induced emission (AIE) or aggregation-induced emission enhancement (AIEE) effect. Furthermore, these luminogens exhibited bright and different solid state fluorescence involving yellow-green, yellow and orange colors, and the fluorescence of their solids could be effectively regulated by mechanical grinding. For luminogen 1, its solid displayed reversible two-color mechanofluorochromic property. As for luminogens 2 and 3, their solids displayed fluorescent colors change from yellow to yellow-green upon slight grinding, and the yellow-green light-emitting solids were converted into orange fluorescent solids after heavy grinding, demonstrating interesting three-color mechanofluorochromism features. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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Full Text from ScienceDirect