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 2016/03
形態種別 学術雑誌
査読 査読あり
標題 Development of Novel Reactions Induced by Coherent Molecular Vibrational Excitation and Direct Observation of Molecular Structural Change during "Thermal" Reactions
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(7),pp.698-717
著者・共著者 Izumi Iwakura, Atsushi Yabushita
概要 Femtochemistry began from the observation of transition states (TSs) in gas-phase photoreactions. Later developments in visible ultrashort laser pulses enabled visualization of real-time changes in the molecular vibrational modes during photoreactions, including those in the liquid phase. However, TSs in thermal reactions could still not be studied, because the conventional femtosecond laser pulse cannot trigger chemical reactions in the electronic ground state. In the present work, a visible ultrashort laser pulse was used to cause an induced Raman process, whereby Raman active molecular vibrational modes were excited in the electronic ground states, which triggers the reaction induced by coherent molecular vibrational excitation in the electronic ground state just after photoexcitation. Using the "reaction by coherent molecular vibration", we have successfully observed the TSs in a "thermal" reaction, thermal Claisen rearrangement.