A Noble-Metal-Free Heterogeneous Photosensitizer-Relay Catalyst Triad That Catalyzes Water Oxidation under Visible Light.

Autor: Ulusoy Ghobadi TG; UNAM-National Nanotechnology Research Center, Institute of Materials Science and Nanotechnology, Bilkent University, 06800, Ankara, Turkey.; Department of Energy Engineering, Faculty of Engineering, Ankara University, 06830, Ankara, Turkey., Akhuseyin Yildiz E; Department of Engineering Physics, Faculty of Engineering, Ankara University, 06100, Ankara, Turkey., Buyuktemiz M; Department of Chemistry, Faculty of Science, Gazi University, Teknikokullar, 06500, Ankara, Turkey., Sadigh Akbari S; Department of Chemistry, Faculty of Science, Bilkent University, 06800, Ankara, Turkey., Topkaya D; Department of Chemistry, Faculty of Sciences, Dokuz Eylul University, Tınaztepe Campus, Izmir, Turkey., İsci Ü; Department of Chemistry, Gebze Technical University, 41400, Kocaeli, Turkey., Dede Y; Department of Chemistry, Faculty of Science, Gazi University, Teknikokullar, 06500, Ankara, Turkey., Yaglioglu HG; Department of Engineering Physics, Faculty of Engineering, Ankara University, 06100, Ankara, Turkey., Karadas F; UNAM-National Nanotechnology Research Center, Institute of Materials Science and Nanotechnology, Bilkent University, 06800, Ankara, Turkey.; Department of Chemistry, Faculty of Science, Bilkent University, 06800, Ankara, Turkey.
Jazyk: angličtina
Zdroj: Angewandte Chemie (International ed. in English) [Angew Chem Int Ed Engl] 2018 Dec 21; Vol. 57 (52), pp. 17173-17177. Date of Electronic Publication: 2018 Nov 30.
DOI: 10.1002/anie.201811570
Abstrakt: 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.
(© 2018 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.)
Databáze: MEDLINE
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