Major subjects

• Infrared spectroscopy of large-sized hydrogen-bonded clusters:
  Hydrogen bond network structures of large-sized water and water-alcohol mixed clusters are studied by the combination of infrared spectroscopy and theoretical computations. Size-dependent development of the network structures is examined in the wide range of the cluster size. Effects of an excess proton in the clusters are also probed.
• Development of new vibrational spectroscopic techniques combined with coherent vacuum ultraviolet light and its application to molecular cluster studies:
  New experimental techniques for vibrational spectroscopy of gas phase molecules and clusters are developed by combination with coherent vacuum ultraviolet light. New spectroscopic techniques are applied to structure studies of fundamental clusters and also to reaction dynamics of clusters upon photoioniation.
• Spectroscopy of model cluster anions of peptide:
  To understand the electron transfer mechanism in peptide, model cluster anions are investigated by gas phase spectroscopy. Photoelectron, photodetachment, and photodissociation spectroscopies are applied to amide cluster anions, and their electron localization mechanism is discussed.
  

Recent papers

• Infrared spectroscopic studies on hydrogen bonded water networks in gas phase clusters.
  Asuka Fujii, Kenta Mizuse, Int. Rev. Phys. Chem. 32, 266-307 (2013).
• Effects of alkyl groups on excess-electron binding to small-sized secondary amide clusters: A combined experimental and computational study.
  Toshihiko Maeyama, Takuto Shimamori, Asuka Fujii, J. Phys. Chem. A 121, 4397-4403 (2017).
• Infrared spectroscopic study of the acidic CH bonds in hydrated clusters of cationic pentane.
  Tomoya Endo, Yoshiyuki Matsuda, Asuka Fujii, J. Phys. Chem. Lett. 8, 4716-4719 (2017).
• Spectroscopic observation of two-center three-electron bonded (hemi-bonded) structures of (H₂S)_n⁺ clusters in the gas phase.
  Dandan Wang, Asuka Fujii, Chem Sci. 8, 2667-2670 (2017).

Contact Information

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Professor Asuka FUJII
(TEL +81-22-795-6572, E-mail: asuka.fujii.c5@/tohoku.ac.jp)
Associate Professor Yukiyoshi Ohtsuki
(TEL +81-22-795-7725, E-mail: yukiyoshi.ohtsuki.d2@/tohoku.ac.jp)
Assistant Professor Toshihiko MAEYAMA
(TEL +81-22-795-6574, E-mail: toshihiko.maeyama.e2@/tohoku.ac.jp)
Assistant Professo Yoshiyuki MATSUDA
(TEL +81-22-795-6573, E-mail: yoshiyuki.matsuda.d4@/tohoku.ac.jp)

Website: http://www.chem.tohoku.ac.jp/research/laboratory/quantum_chemistry.html