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 2011/04
形態種別 学術雑誌
査読 査読あり
標題 The experimental visualization of molecular structural changes during both photochemical and thermal reactions by real-time vibrational spectroscopy
執筆形態 単著
掲載誌名 Physical Chemistry Chemical Physics
掲載区分国外
巻・号・頁 13(13),pp.5546-5555
著者・共著者 Izumi Iwakura
概要 Have you ever hoped to observe transition states (TS)? Detailed knowledge of transition states helps find strategies to develop novel reaction schemes for introducing new functionalities to chemicals. Molecular structural changes via TSs can be observed by real-time vibrational spectroscopy using 5-fs pulses. In this paper, I report the direct observation of time-dependent frequency shifts of relevant molecular vibrational modes, which allowed for the clear visualization of ultrafast structural changes in molecules during bond breaking and bond reformation steps. Various mechanisms for photochemical reactions were clarified using 5-fs pulses. Moreover, a non-thermal vibrational excitation method for efficiently driving chemical reactions in the electronic ground state in solution with the use of broadband visible 5-fs pulses has been developed. The respective chemical reaction processes were directly observed, including TSs during not only "photochemical" but also "thermal" reactions.