Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 57, Issue 52, Pages 17173-17177Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201811570
Keywords
dye-sensitization; porphyrins; Prussian blue; water oxidation; water splitting
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Funding
- Scientific and Technological Research Council of Turkey (TUBITAK) [215Z249]
- TUBA-GEBIP
- BAGEP
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An entirely earth-abundant chromophore-relay water oxidation catalyst triad system, which is robust and efficient at neutral pH, is presented. The synthesis involves the coordination of a porphyrin derivative to a bridging Fe(CN)(5) group, which is then reacted with Co ions to prepare a covalently linked chromophore-Prussian blue analogue assembly. Light-driven water oxidation studies in the presence of an electron scavenger indicate that the triad is active and it maintains a steady activity for at least three hours. Transient absorption experiments and computational studies reveal that the Fe(CN)(5) group is more than a linker as it takes part in electron-transfer and co-operates with porphyrin in the charge separation process.
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