Journal
NATURE COMMUNICATIONS
Volume 13, Issue 1, Pages -Publisher
NATURE PORTFOLIO
DOI: 10.1038/s41467-021-27573-1
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Funding
- National Natural Science Foundation of China [21905150, 31202117]
- Natural Science Foundation of Shandong Province [ZR2020ZD38]
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Developing a facile strategy for constructing vinylene-linked fully π-conjugated covalent organic frameworks (COFs) remains a huge challenge. However, by utilizing a versatile condition of Knoevenagel polycondensation, three vinylene-linked 2D COFs were successfully prepared. These COFs exhibit excellent photocatalytic activity.
Developing a facile strategy for the construction of vinylene-linked fully pi-conjugated covalent organic frameworks (COFs) remains a huge challenge. Here, a versatile condition of Knoevenagel polycondensation for constructing vinylene-linked 2D COFs was explored. Three new examples of vinylene-linked 2D COFs (BTH-1, 2, 3) containing benzobisthiazoles units as functional groups were successfully prepared under this versatile and mild condition. The electron-deficient benzobisthiazole units and cyano-vinylene linkages were both integrated into the pi conjugated COFs skeleton and acted as acceptor moieties. Interestingly, we found the construction of a highly ordered and conjugated D-A system is favorable for photocatalytic activity. BTH-3 with benzotrithiophene as the donor with a strong D-A effect exhibited an attractive photocatalytic HER of 15.1 mmol h(-1)g(-1) under visible light irradiation.
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