期刊
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
卷 59, 期 42, 页码 18695-18700出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.202008000
关键词
oxygen production; polymer photocatalysts; soft photocatalysts; solar fuel; water oxidation
资金
- Royal Society of Chemistry
- Engineering and Physical Sciences Research Council (EPSRC) [EP/N004884/1, EP/S017623/1, EP/I004424/1]
- National Science Foundation of China [21961142019, 21861130353, 21703040]
- China Scholarship Council
- EPSRC [EP/I004424/1, EP/N004884/1] Funding Source: UKRI
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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