An efficient electron donor containing a silicon heteroatom for organic photocatalysts with high hydrogen production activity

Changzhi Han; Sihui Xiang; Xiaolong Feng; Pengchao Zhang; Yi Ren; Chong Zhang; Xiaochen Wang; Jia-Xing Jiang

doi:10.1039/D2CC06637H

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An efficient electron donor containing a silicon heteroatom for organic photocatalysts with high hydrogen production activity†

Changzhi Han,^a Sihui Xiang,^a Xiaolong Feng,^a Pengchao Zhang,^a Yi Ren,^a Chong Zhang,

*^a Xiaochen Wang*^a and Jia-Xing Jiang

*^ab

Author affiliations

* Corresponding authors

^a Key Laboratory for Macromolecular Science of Shaanxi Province, Shaanxi Engineering Laboratory for Advanced Energy Devices, School of Materials Science and Engineering, Shaanxi Normal University, Xi’an, Shaanxi 710062, P. R. China
E-mail: chongzhangabc@snnu.edu.cn, wangxc@snnu.edu.cn, jiaxing@jhun.edu.cn

^b Key Laboratory of Optoelectronic Chemical Materials and Devices (Ministry of Education), School of Optoelectronic Materials & Technology, Jianghan University, Wuhan 430056, P. R. China

Abstract

We report here 4,4-bis(2-ethylhexyl)-4H-silolo[3,2-b:4,5-b′]dithiophene (SiDT) as an electron donor to construct a donor–acceptor type conjugated polymer (PSiDT-BTDO) photocatalyst with a narrow band gap by employing dibenzo[b,d]thiophene-S,S-dioxide as an electron acceptor. The resulting polymer PSiDT-BTDO could realize a high hydrogen evolution rate of 72.20 mmol h⁻¹ g⁻¹ under ultraviolet-visible light with a Pt co-catalyst, due to the enhanced hydrophilicity as well as the decreased recombination rate of photo-induced holes/electrons and the dihedral angles of the polymer chains. The high photocatalytic activity of PSiDT-BTDO reveals the promising application of the SiDT donor in designing high-performance organic photocatalysts for hydrogen evolution.

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DOI: https://doi.org/10.1039/D2CC06637H
Article type: Communication
Submitted: 06 Dec 2022
Accepted: 19 Apr 2023
First published: 26 Apr 2023

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Chem. Commun., 2023,59, 6235-6238

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An efficient electron donor containing a silicon heteroatom for organic photocatalysts with high hydrogen production activity

C. Han, S. Xiang, X. Feng, P. Zhang, Y. Ren, C. Zhang, X. Wang and J. Jiang, Chem. Commun., 2023, 59, 6235 DOI: 10.1039/D2CC06637H

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Chemical Communications

An efficient electron donor containing a silicon heteroatom for organic photocatalysts with high hydrogen production activity†

Abstract

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An efficient electron donor containing a silicon heteroatom for organic photocatalysts with high hydrogen production activity

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