Issue 9, 2024

One-step synthesis of a highly crystalline covalent organic framework with olefin and imine dual linkages for tuning the catalytic activity

Abstract

Although the variety of covalent organic frameworks (COFs) is expanding, it is still limited and challenging to construct COFs through the formation of two types of covalent linkages. In this study, we present a one-step method for the preparation of a highly crystalline COF with olefin and imine dual linkages, which is achieved by organobase-catalyzed orthogonal Schiff base reaction and Knoevenagel condensation. Intriguingly, this method can also be utilized for the synthesis of an imine-linked COF. The resulting TFPT-APA COF with dual linkages possesses a high specific surface area of 1329 m2 g−1 and exhibits enhanced performance in photocatalytic degradation of pollutants over the structurally similar imine-linked TFPT-PA COF. Further studies reveal that TFPT-APA can generate singlet oxygen (1O2) under light irradiation, whereas TFPT-PA does not possess this capability. This study not only provides a new approach for the design and synthesis of COFs with dual linkages, but also opens up possibilities for constructing COFs with diverse catalytic properties.

Graphical abstract: One-step synthesis of a highly crystalline covalent organic framework with olefin and imine dual linkages for tuning the catalytic activity

Supplementary files

Article information

Article type
Paper
Submitted
28 Oct 2023
Accepted
19 Jan 2024
First published
31 Jan 2024

J. Mater. Chem. A, 2024,12, 5254-5260

One-step synthesis of a highly crystalline covalent organic framework with olefin and imine dual linkages for tuning the catalytic activity

Q. Sun, S. Jiang, H. Niu, Y. Li, X. Wu, Y. Shi and Y. Cai, J. Mater. Chem. A, 2024, 12, 5254 DOI: 10.1039/D3TA06586C

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