Water Oxidation with Cobalt-Loaded Linear Conjugated Polymer Photocatalysts



Sprick, Reiner Sebastian, Chen, Zheng, Cowan, Alexander J ORCID: 0000-0001-9032-3548, Bai, Yang ORCID: 0000-0002-1643-3770, Aitchison, Catherine M, Fang, Yuanxing, Zwijnenburg, Martijn A, Cooper, Andrew I and Wang, Xinchen
(2020) Water Oxidation with Cobalt-Loaded Linear Conjugated Polymer Photocatalysts. Angewandte Chemie International Edition.

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Abstract

The first examples of linear conjugated organic polymer photocatalysts that produce oxygen from water after loading with cobalt and in the presence of an electron scavenger are reported. The oxygen evolution rates, which are higher than for related organic materials, can be rationalized by a combination of the thermodynamic driving force for water oxidation, the light absorption of the polymer, and the aqueous dispersibility of the relatively hydrophilic polymer particles. We also used transient absorption spectroscopy to study the best performing system and we found that fast oxidative quenching of the exciton occurs (picoseconds) in the presence of an electron scavenger, minimizing recombination.

Item Type: Article
Uncontrolled Keywords: oxygen production, polymer photocatalysts, soft photocatalysts, solar fuel, water oxidation
Depositing User: Symplectic Admin
Date Deposited: 03 Jul 2020 08:09
Last Modified: 27 Nov 2021 05:10
DOI: 10.1002/anie.202008000
Open Access URL: http://doi.org/10.1002/anie.202008000
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3092541