Facile Construction of Fully Sp-carbon Conjugated Two-dimensional Covalent Organic Frameworks Containing Benzobisthiazole Units

Overview

Journal Nat Commun

Specialty Biology

Date 2022 Jan 11

PMID 35013158

Authors

Yuancheng Wang

Wenbo Hao

Hui Liu

Renzeng Chen

Qingyan Pan

Zhibo Li

Yingjie Zhao

Affiliations

Soon will be listed here.

Abstract

Developing a facile strategy for the construction of vinylene-linked fully π-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 π 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 hg under visible light irradiation.

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