Water oxidation with cobalt-loaded linear conjugated polymer photocatalysts

Reiner Sebastian Sprick; Zheng Chen; Alexander J. Cowan; Yang Bai; Catherine M. Aitchison; Yuanxing Fang; Martijn A. Zwijnenburg; Andrew I. Cooper; Xinchen Wang

doi:10.1002/anie.202008000

Water oxidation with cobalt-loaded linear conjugated polymer photocatalysts

Reiner Sebastian Sprick, Zheng Chen, Alexander J. Cowan, Yang Bai, Catherine M. Aitchison, Yuanxing Fang, Martijn A. Zwijnenburg, Andrew I. Cooper, Xinchen Wang

Pure And Applied Chemistry

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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.

Original language	English
Pages (from-to)	18695-18700
Number of pages	6
Journal	Angewandte Chemie International Edition
Volume	59
Issue number	42
Early online date	28 Jun 2020
DOIs	https://doi.org/10.1002/anie.202008000
Publication status	Published - 12 Oct 2020

Keywords

oxygen production
polymer photocatalysts
soft photocatalysts
solar fuel
water oxidation

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Sprick-etal-ACIE-2020-Water-oxidation-with-cobalt-loaded-linear-conjugated-polymer-photocatalystsFinal published version, 1.15 MBLicence: CC BY 4.0

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title = "Water oxidation with cobalt-loaded linear conjugated polymer photocatalysts",

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.",

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author = "Sprick, {Reiner Sebastian} and Zheng Chen and Cowan, {Alexander J.} and Yang Bai and Aitchison, {Catherine M.} and Yuanxing Fang and Zwijnenburg, {Martijn A.} and Cooper, {Andrew I.} and Xinchen Wang",

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T1 - Water oxidation with cobalt-loaded linear conjugated polymer photocatalysts

AU - Sprick, Reiner Sebastian

AU - Chen, Zheng

AU - Cowan, Alexander J.

AU - Bai, Yang

AU - Aitchison, Catherine M.

AU - Fang, Yuanxing

AU - Zwijnenburg, Martijn A.

AU - Cooper, Andrew I.

AU - Wang, Xinchen

PY - 2020/10/12

Y1 - 2020/10/12

N2 - 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.

AB - 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.

KW - oxygen production

KW - polymer photocatalysts

KW - soft photocatalysts

KW - solar fuel

KW - water oxidation

U2 - 10.1002/anie.202008000

DO - 10.1002/anie.202008000

M3 - Article

SN - 1433-7851

VL - 59

SP - 18695

EP - 18700

JO - Angewandte Chemie International Edition

JF - Angewandte Chemie International Edition

IS - 42

ER -

Water oxidation with cobalt-loaded linear conjugated polymer photocatalysts

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