title: Intermolecular electron transfer from excited benzophenone ketyl radical.
abstract: The electron transfer from the benzophenone ketyl radical in the excited state (BPH(.-)(D(1))) to several quenchers (Qs) was investigated using nanosecond/picosecond two-color two-laser flash photolysis and nanosecond/nanosecond two-color two-laser flash photolysis. The electron transfer from BPH(.-)(D(1)) to Qs was confirmed by the transient absorption and fluorescence quenching measurements. The intermolecular electron-transfer rate constants were determined using the Stern-Volmer analysis. The driving force dependence of the electron-transfer rate was revealed.
authors.affiliation: The Institute of Scientific and Industrial Research (SANKEN), Osaka University, Mihogaoka 8-1, Ibaraki, Osaka 567-0047, Japan.
authors.forename: Masanori
authors.initials: M
authors.lastname: Sakamoto
authors.forename: Xichen
authors.initials: X
authors.lastname: Cai
authors.forename: Sung Sik
authors.initials: SS
authors.lastname: Kim
authors.forename: Mamoru
authors.initials: M
authors.lastname: Fujitsuka
authors.forename: Tetsuro
authors.initials: T
authors.lastname: Majima
mesh_terms: D000097:Acetonitriles / Q000737:chemistry; D001577:Benzophenones / Q000737:chemistry*; D002627:Chemistry, Physical / Q000379:methods*; D004583:Electrons; D004735:Energy Transfer; D005609:Free Radicals; D007834:Lasers; D008956:Models, Chemical; D010084:Oxidation-Reduction; D013050:Spectrometry, Fluorescence / Q000379:methods; D013816:Thermodynamics; D013997:Time Factors
chemical_list: D000097:Acetonitriles; D001577:Benzophenones; D005609:Free Radicals; C047723:benzophenone; C032159:acetonitrile