Synthesis and photophysics of one mononuclear Mn(III) and one dinuclear Mn(III,III) complex covalently linked to a ruthenium(II) tris(bipyridyl) complex
2003 (English)In: Inorganic Chemistry, ISSN 0020-1669, E-ISSN 1520-510X, Vol. 42, no 23, 7502-7511 p.Article in journal (Refereed) Published
The preparation of donor (D)-photosensitizer (S) arrays, consisting of a manganese complex as D and a ruthenium tris(bipyridyl) complex as S has been pursued. Two new ruthenium complexes containing coordinating sites for one (2a) and two manganese ions (3a) were prepared in order to provide models for the donor side of photosystem II in green plants. The manganese coordinating site consists of bridging and terminal phenolate as well as terminal pyridyl ligands. The corresponding ruthenium-manganese complexes, a manganese monomer 2b and dimer 3b, were obtained. For the dimer 3b, our data suggest that intramolecular electron transfer from manganese to photogenerated ruthenium(III) is fast, k(ET) > 5 x 10(7) s(-1).
Place, publisher, year, edition, pages
2003. Vol. 42, no 23, 7502-7511 p.
intramolecular electron-transfer, tyrosine y-z, polarization epr characterization, photosynthetic oxygen evolution, photosystem-ii, artificial photosynthesis, manganese complexes, tris-bipyridine, water oxidation, phenolate ligands
IdentifiersURN: urn:nbn:se:kth:diva-22958ISI: 000186562900028OAI: oai:DiVA.org:kth-22958DiVA: diva2:341656
QC 201005252010-08-102010-08-10Bibliographically approved