title: Effect of the addition of a fused donor-acceptor ligand on a Ru(II) complex: synthesis, characterization, and photoinduced electron transfer reactions of [Ru(TTF-dppz)2(Aqphen)]2+.
abstract: The synthesis and the photophysical properties of the complex [Ru(TTF-dppz)(2)(Aqphen)](2+) (TTF = tetrathiafulvalene, dppz = dipyrido-[3,2-a:2',3'-c]phenazine, Aqphen = anthraquinone fused to phenanthroline via a pyrazine bridge) are described. In this molecular triad excitation into the metal-ligand charge transfer bands results in the creation of a long-lived charge separated state with TTF acting as electron donor and anthraquinone as terminal acceptor. The lifetime of the charge-separated state is 400 ns in dichloromethane at room temperature. A mechanism for the charge separation involving an intermediate charge-separated state is proposed based on transient absorption spectroscopy.
authors.affiliation: Département de Chimie Physique, Université de Genève, 30 Quai Ernest-Ansermet, CH-1211 Genève 4, Switzerland.
authors.forename: Nathalie
authors.initials: N
authors.lastname: Dupont
authors.forename: Ying-Fen
authors.initials: YF
authors.lastname: Ran
authors.forename: Hong-Peng
authors.initials: HP
authors.lastname: Jia
authors.forename: Jakob
authors.initials: J
authors.lastname: Grilj
authors.forename: Jie
authors.initials: J
authors.lastname: Ding
authors.forename: Shi-Xia
authors.initials: SX
authors.lastname: Liu
authors.forename: Silvio
authors.initials: S
authors.lastname: Decurtins
authors.forename: Andreas
authors.initials: A
authors.lastname: Hauser