Triarylamine-Conjugated Bis(dipyrrinato)zinc(II) Complexes: Impact of Triarylamine on Photochemical Property and Multi-Redox Reaction

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  • TSUCHIYA Mizuho
    Department of Chemistry, Graduate School of Science, The University of Tokyo
  • SAKAMOTO Ryota
    Department of Chemistry, Graduate School of Science, The University of Tokyo
  • KUSAKA Shinpei
    Department of Chemistry, Graduate School of Science, The University of Tokyo
  • KAKINUMA Junko
    Department of Chemistry, Graduate School of Science, The University of Tokyo
  • NISHIHARA Hiroshi
    Department of Chemistry, Graduate School of Science, The University of Tokyo

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In this communication, we report the synthesis of triarylamine-conjugated bis(dipyrrinato)zinc(II) complexes 1 and 2, and disclose their photochemical and electrochemical properties. The structures of 1 and 2 were determined by means of single-crystal X-ray structure analysis. The effect of the triarylamine moieties on the UV-vis spectra of 1 and 2 was not large, although it significantly quenched the fluorescence of 1 and 2. Cyclic voltammetry and differential pulse voltammetry revealed that 1 and 2 underwent oxidation up to four electrons. Since they bear two triarylamine entities and two dipyrrinato ligands, the oxidation is assignable to the one-electron oxidation processes of each of the four moieties. The redox reversibility was much higher in 2 than that in 1. The introduction of ethyl groups on the 2 and 6 positions of dipyrrin moieties contributed to the enhancement of the electrochemical reversibility.

収録刊行物

  • Electrochemistry

    Electrochemistry 81 (5), 337-339, 2013

    公益社団法人　電気化学会

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