Issue 31, 2022

Developing highly reducing conjugated porous polymer: a metal-free and recyclable approach with superior performance for pinacol C–C coupling under visible light

Abstract

Porous organic polymers (POPs) have been shown to be an excellent and sustainable platform for photocatalysis. However, the development of an organic polymer photocatalyst with strong reducing capacity to drive organic transformations still lags far behind. Herein, a donor–acceptor–π (D–A–π) conjugated organic polymer (TX-OXD-P) is designed by introducing 1,3,4-oxadiazole (OXD) units into a truxene-based polymeric framework. The resulting polymer combines enhanced visible-light absorption, an improved charge separation process, and confined micropore environment. More intriguingly, TX-OXD-P exhibits high reducing power and is capable of catalysing pinacol C–C coupling in a metal-free and recyclable fashion. Remarkably, previously challenging carbonyl compounds with significantly negative reduction potentials could be accommodated under the catalysis of TX-OXD-P. The results indicate that structural modification at a molecular level holds a key point to unveil new photocatalytic performance of organic polymers.

Graphical abstract: Developing highly reducing conjugated porous polymer: a metal-free and recyclable approach with superior performance for pinacol C–C coupling under visible light

Supplementary files

Article information

Article type
Paper
Submitted
26 Apr 2022
Accepted
12 Jul 2022
First published
15 Jul 2022

J. Mater. Chem. A, 2022,10, 16578-16584

Developing highly reducing conjugated porous polymer: a metal-free and recyclable approach with superior performance for pinacol C–C coupling under visible light

F. Lan, C. Liu, C. Zhou, X. Huang, J. Wu and X. Zhang, J. Mater. Chem. A, 2022, 10, 16578 DOI: 10.1039/D2TA03341K

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