Exploring the "Goldilocks Zone" of Semiconducting Polymer Photocatalysts by Donor-Acceptor Interactions

Angewandte Chemie
Yaroslav S KocherginMichael J Bojdys

Abstract

Water splitting using polymer photocatalysts is a key technology to a truly sustainable hydrogen-based energy economy. Synthetic chemists have intuitively tried to enhance photocatalytic activity by tuning the length of π-conjugated domains of their semiconducting polymers, but the increasing flexibility and hydrophobicity of ever-larger organic building blocks leads to adverse effects such as structural collapse and inaccessible catalytic sites. To reach the ideal optical band gap of about 2.3 eV, A library of eight sulfur and nitrogen containing porous polymers (SNPs) with similar geometries but with optical band gaps ranging from 2.07 to 2.60 eV was synthesized using Stille coupling. These polymers combine π-conjugated electron-withdrawing triazine (C3 N3 ) and electron donating, sulfur-containing moieties as covalently bonded donor-acceptor frameworks with permanent porosity. The remarkable optical properties of SNPs enable fluorescence on-off sensing of volatile organic compounds and illustrate intrinsic charge-transfer effects.

References

Sep 28, 2007·Angewandte Chemie·Jia-Xing JiangAndrew I Cooper
Mar 12, 2008·Angewandte Chemie·Pierre KuhnArne Thomas
Jan 24, 2013·Angewandte Chemie·Katharina SchwinghammerBettina V Lotsch
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Citations

Jul 20, 2019·Chemistry : a European Journal·Jieyang HuangMichael J Bojdys
Jun 3, 2020·Advanced Materials·Chengxiao ZhaoTierui Zhang
Jul 1, 2020·Angewandte Chemie·Reiner Sebastian SprickXinchen Wang
Jan 26, 2021·Chemistry : a European Journal·Patrick W Fritz, Ali Coskun
Apr 13, 2021·Chemistry of Materials : a Publication of the American Chemical Society·Mohamed ZbiriAnne A Y Guilbert
Nov 17, 2021·Dalton Transactions : an International Journal of Inorganic Chemistry·Feng-Yang XieWen-Juan Ruan
Jan 18, 2022·Chemical Society Reviews·Jeet ChakrabortyFrancis Verpoort

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