title: Conjugation length dependent ground and excited state electronic behavior in oligothienyl ru complexes.
abstract: Photoexcitation of a bis(bipyridyl) Ru(II) complex bearing a phosphinopentathiophene ligand results in formation of a transient species with a lifetime of 2.2 micros. The transient is attributed to the product of an intramolecular charge transfer from the pentathiophene ligand. EPR and UV/vis spectroelectrochemistry show that the HOMO is pentathienyl-based, while corresponding complexes with shorter conjugation length ligands have a metal-based HOMO and do not exhibit long-lived transients.
authors.affiliation: Department of Chemistry, University of British Columbia, Vancouver, British Columbia, V6T 1Z1 Canada.
authors.forename: Carolyn
authors.initials: C
authors.lastname: Moorlag
authors.forename: Biprajit
authors.initials: B
authors.lastname: Sarkar
authors.forename: Carlos N
authors.initials: CN
authors.lastname: Sanrame
authors.forename: Peter
authors.initials: P
authors.lastname: Bäuerle
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Kaim
authors.forename: Michael O
authors.initials: MO
authors.lastname: Wolf
mesh_terms: D004583:Electrons; D008024:Ligands; D008968:Molecular Conformation; D009942:Organometallic Compounds / Q000737:chemistry*; D010084:Oxidation-Reduction; D011789:Quantum Theory; D012428:Ruthenium / Q000737:chemistry*; D013438:Sulfhydryl Compounds / Q000737:chemistry*
chemical_list: D008024:Ligands; D009942:Organometallic Compounds; D013438:Sulfhydryl Compounds; D012428:Ruthenium