title: Coordination mode dependent excited state behavior in group 8 phosphino(terthiophene) complexes.
abstract: The ground and excited state behavior of four Ru(II) and Os(II) bipyridyl complexes containing the 3'-(diphenylphosphino)-2,2':5',2''-terthiophene (PT(3)) ligand in two different coordination modes (P,S and P,C) is reported. The complexes are generally stable under extended photoirradiation, except for [Ru(bpy)(2)PT(3)-P,S](PF(6))(2) which decomposes. Emission lifetimes and transient absorption spectra and lifetimes have been obtained for all the complexes. These data support a PT(3) ligand based lowest excited state in the case of both P,S bound complexes, and a charge separated lowest excited state in both P,C bound complexes, conclusions supported by Density Functional Theory (DFT) calculations.
authors.affiliation: Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z1, Canada.
authors.forename: Stephanie A
authors.initials: SA
authors.lastname: Moore
authors.forename: Jeffrey K
authors.initials: JK
authors.lastname: Nagle
authors.forename: Michael O
authors.initials: MO
authors.lastname: Wolf
authors.forename: Brian O
authors.initials: BO
authors.lastname: Patrick