title: Highly efficient photoproduction of charge-separated states in donor-acceptor-linked bis(acetylide) platinum complexes.
abstract: We report a highly efficient charge separation system, D-Pt-A, where D (triphenylamine) and A (naphthalenediimide) are bonded to the Pt moiety through highly twisted phenylene ethynylene linkages. The quantum yields for the formation of the charge-separated state were determined to be nearly unity. The lifetimes of D(+)-Pt-A(-) were approximately 1 micros at room temperature and much longer at low temperature. The spin-correlated radical ion pair was directly observed by means of time-resolved EPR spectroscopy.
authors.affiliation: Department of Chemistry, Graduate School of Science, Osaka City University, Sugimoto, Sumiyoshi-ku, Osaka 558-8585, Japan.
authors.forename: Shuichi
authors.initials: S
authors.lastname: Suzuki
authors.forename: Ryoji
authors.initials: R
authors.lastname: Sugimura
authors.forename: Masatoshi
authors.initials: M
authors.lastname: Kozaki
authors.forename: Kazutoshi
authors.initials: K
authors.lastname: Keyaki
authors.forename: Koichi
authors.initials: K
authors.lastname: Nozaki
authors.forename: Noriaki
authors.initials: N
authors.lastname: Ikeda
authors.forename: Kimio
authors.initials: K
authors.lastname: Akiyama
authors.forename: Keiji
authors.initials: K
authors.lastname: Okada