Intermolecular electron transfer from photogenerated Ru(bpy)(3)(+) to 2Fe2S model complexes of the iron-only hydrogenase active site
2007 (English)In: Inorganic Chemistry, ISSN 0020-1669, E-ISSN 1520-510X, Vol. 46, no 10, 3813-3815 p.Article in journal (Refereed) Published
Visible light-driven intermolecular electron transfer was observed from a reduced species Ru(bpy)(3)(+), photogenerated via a reductive quenching of the ruthenium photosensitizer by a diethyldithiocarbamate anion, to bioinspired [2Fe2S] model complexes of the iron-only hydrogenase active site. The results indicate that Ru(bpy)(3)(2+) can act as a photoactive functional model of the [4Fe4S] cluster, playing the role of an electron-transfer relay. The photogenerated (FeFe0)-Fe-I species, which is proposed to be a crucial intermediate for proton reduction catalyzed electrochemically by the [2Fe2S] complexes, gives promise in the light-driven dihydrogen evolution using diiron complexes as surrogates of noble platinum catalysts.
Place, publisher, year, edition, pages
2007. Vol. 46, no 10, 3813-3815 p.
supramolecular systems, homogeneous catalysis, photo-reduction, excited-states, visible-light, evolution, tris(2,2'-bipyridine)ruthenium(ii), mediation, water
IdentifiersURN: urn:nbn:se:kth:diva-16605DOI: 10.1021/ic070234kISI: 000246209800009ScopusID: 2-s2.0-34249701660OAI: oai:DiVA.org:kth-16605DiVA: diva2:334647
QC 201005252010-08-052010-08-05Bibliographically approved