title: Arsole-Containing π-Conjugated Polymer by the Post-Element-Transformation Technique.
abstract: A synthetic method to obtain an arsole-containing π-conjugated polymer by the post-transformation of the organotitanium polymer titanacyclopentadiene-2,5-diyl unit with an arsenic-containing building block is described. The UV/Vis absorption maximum and onset of the polymer were observed at 517 nm and 612 nm, respectively. The polymer exhibits orange photoluminescence with an emission maximum (Emax) of 600 nm and the quantum yield (Φ) of 0.05. The polymer proved to exhibit a quasi-reversible redox behavior in its cyclic voltammetric (CV) analysis. The energy levels of the highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) were estimated to be -5.43 and -3.24 eV, respectively, from the onsets for oxidation and reduction signals in the CV analysis. Further chemical modification of the arsole unit in the π-conjugated polymer by complexation of gold(I) chloride occurred smoothly resulting in the bathochromic shift of the UV/Vis absorption and lowering of the LUMO energy level.
authors.affiliation: School of Materials and Chemical Technology, Tokyo Institute of Technology, Nagatsuta-cho 4259-G1-9, Midori-ku, Yokohama, 226-8502, Japan.
authors.forename: Yoshimasa
authors.initials: Y
authors.lastname: Matsumura
authors.affiliation: Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan.
authors.forename: Makoto
authors.initials: M
authors.lastname: Ishidoshiro
authors.affiliation: Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan.
authors.forename: Yasuyuki
authors.initials: Y
authors.lastname: Irie
authors.affiliation: Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan.
authors.forename: Hiroaki
authors.initials: H
authors.lastname: Imoto
authors.affiliation: Graduate School of Science and Technology, Kyoto Institute of Technology, Goshokaido-cho, Matsugasaki, Sakyo-ku, Kyoto, 606-8585, Japan.
authors.forename: Kensuke
authors.initials: K
authors.lastname: Naka
authors.affiliation: Fukui Institute for Fundamental Chemistry, Kyoto University, 34-4 Nishihiraki-cho, Takano, Sakyo-ku, Kyoto, 606-8103, Japan.
authors.forename: Kazuyoshi
authors.initials: K
authors.lastname: Tanaka
authors.affiliation: School of Materials and Chemical Technology, Tokyo Institute of Technology, Nagatsuta-cho 4259-G1-9, Midori-ku, Yokohama, 226-8502, Japan.
authors.forename: Shinsuke
authors.initials: S
authors.lastname: Inagi
authors.affiliation: School of Materials and Chemical Technology, Tokyo Institute of Technology, Nagatsuta-cho 4259-G1-9, Midori-ku, Yokohama, 226-8502, Japan.
authors.forename: Ikuyoshi
authors.initials: I
authors.lastname: Tomita
keywords: arsination; arsoles; organometallic polymers; polymer reactions; π-conjugated polymers