イワクラ イズミ   Iwakura Izumi
  岩倉 いずみ
   所属   神奈川大学  工学部 化学教室
    神奈川大学大学院  工学研究科 工学専攻(応用化学領域)
   職種   教授
言語種別 英語
発行・発表の年月 2011/02
形態種別 学術雑誌
査読 査読あり
標題 Transition State in a Prevented Proton-Transfer Observed in Real-Time
執筆形態 共著
掲載誌名 Bulletin of the Chemical Society of Japan
掲載区分国外
出版社・発行元 The Chemical Society of Japan
巻・号・頁 84(2),pp.164-171
著者・共著者 Izumi Iwakura, Atsushi Yabushita, Takayoshi Kobayashi
概要 Time-dependent frequency variations in molecular vibration modes reflect structural change in TS. Ultrafast changes in molecular structure during bond breaking and bond reformation can be clearly visualized using ultrafast spectroscopy. This study elucidated molecular structural information in states along the chemical reaction including TS in proton transfer of indigodisulfonate salt. The photoexcited proton transfer was found to follow a stepwise pathway. The monoalcohol intermediate generated by the proton transfer was found to return immediately to the original indigo without proton transfer configuration. This back reaction of this is the reason for the ultra-photostability of indigo over extremely long exposure to light. This shows that real-time vibrational spectroscopy by a few fs laser enables the observation of dynamic behavior of molecular vibrations during chemical reactions, leading to the clarification of reaction mechanisms or the development of new chemical reactions.