Acetylene-linked conjugated polymers for sacrificial photocatalytic hydrogen evolution from water

Liu, Lunjie and Kochman, Michał A. and Xu, Yongjie and Zwijnenburg, Martijn A. and Cooper, Andrew I. and Sprick, Reiner Sebastian (2021) Acetylene-linked conjugated polymers for sacrificial photocatalytic hydrogen evolution from water. Journal of Materials Chemistry A, 9 (32). pp. 17242-17248. ISSN 2050-7488 (https://doi.org/10.1039/d1ta04288b)

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Abstract

Conjugated organic polymers have shown potential as photocatalysts for hydrogen production by water splitting. Taking advantage of a high throughput screening workflow, two series of acetylene-linked co-polymers were prepared and studied for their potential as photocatalysts for sacrificial hydrogen production from water. It was found that a triethynylbenzene-based polymer with a dibenzo[b,d]thiophene sulfone linker (TE11) had the highest performance in terms of hydrogen evolution rate under visible illumination in the presence of a sacrificial hole-scavenger. Synthetically elaborating the triethynylbenzene linker in TE11 by changing the core and by introducing nitrogen, the resulting hydrogen evolution rate was further increased by a factor of nearly two.