Tuning the pore structures and photocatalytic properties of a 2D covalent organic framework with multi-branched photoactive moieties

Xuan Wang; Ming-Jie Dong; Chuan-De Wu

doi:10.1039/d0nr02994g

Tuning the pore structures and photocatalytic properties of a 2D covalent organic framework with multi-branched photoactive moieties

Nanoscale. 2020 Aug 14;12(30):16136-16142. doi: 10.1039/d0nr02994g. Epub 2020 Jul 23.

Authors

Xuan Wang¹, Ming-Jie Dong, Chuan-De Wu

Affiliation

¹ State Key Laboratory of Silicon Materials, Department of Chemistry, Zhejiang University, Hangzhou, 310027, P. R. China. cdwu@zju.edu.cn.

PMID: 32700706
DOI: 10.1039/d0nr02994g

Abstract

In this study, a new strategy to establish a 3D local connection of building synthons and tune the functionalities of 2D covalent organic frameworks (COFs) was developed via in situ incorporation of multi-branched building blocks during the synthesis of COFs. The new COF material CPF-3 retains the features including surface area, crystallinity and stability of the pristine 2D COF COF-LZU1 and expands the light absorption range to the visible-light region via incorporation of accessible photoactive porphyrin sites with the 3D local connection. The Sn(iv)-metalated COF material Sn-CPF-3 exhibits high photocatalytic efficiency and selectivity in aerobic oxidation of sulfides to produce highly value-added sulfoxides with up to 23 334 turnovers and 648 h^-1 turnover frequency under visible light irradiation.