The Institute of Scientific and Industrial Research, Osaka University


LAST UPDATE 2020/06/11

  • 研究者氏名
    Researcher Name

    藤塚守 Mamoru FUJITSUKA
    教授 Professor
  • 所属
    Professional Affiliation

    The Institute of Scientific and Industrial Research, Osaka University

    Department of Molecular Excitation Chemistry
  • 研究キーワード
    Research Keywords

    Excited Intermediates
Research Subject
Chemistry of highly activated species generated by photo- and electron beam irradiation

研究の背景 Background


In condensed phase, higher excited state molecules and materials exhibit superior reactivity compared to those in the lowest excited states, although their short lifetimes inhibit detailed characterization. We are studying higher excited state chemistry of molecules and materials by means of time- and space- controlled laser and electron beam irradiation. Especially, by means of ultrafast spectroscopy, we have clarified basic aspects of higher excited states towards applications including photocatalysts and so on.

研究の目標 Outcome

光および電子ビームの制御により生じる高活性励起状態化学を展開する。具体的内容を以下に示す。(1) 高励起状態ダイナミクスの解明 (2) 励起ラジカルイオンをスーパーオキシダントおよびスーパーリダクタントとした反応化学 (3)電荷ダイナミクスに基づく高活性光触媒の開発 (4) 振動分光に基づく反応中間体の構造ダイナミクスの解明

Chemistry of higher reactive molecules and materials is explored by means of ultrafast spectroscopy to realize following issues: (1) Clarification of reaction dynamics of higher excited molecules (2) Reaction process of exited radical ions as super-oxidant or super-reductant (3) Development of highly active photocatalysts based on carrier dynamics (4) Studies on structural dynamics of reactive intermediates by vibrational spectroscopy during pulse radiolysis.

研究図Research Figure

Fig.1. Formation of excited intermediates by multi-laser excitation and the energy diagram for the electron transfer from the excited radical anion Fig.2. Water splitting by Z-scheme type photoexcitation of BP/BiVO4 photocatalysts

文献 / Publications

J. Photochem. Photobiol. C; Photochem. Review, 2018, 35, 25–37, J. Phys. Chem. B, 2015, 119, 7275–7282. Angew. Chem. Int. Ed. 2018, 57, 2160–2164. J. Phys. Chem. A, 2015, 119, 6816–6822. Phys. Chem. Chem. Phys. 2012, 14, 14585–14588. J. Phys. Chem. Lett., 2011, 23, 2965–2971.