Research Area

• Chemical reaction dynamics mainly targeted at atomic and molecular clusters

Research Subjects

• Geometrical structures and chemical reactions of clusters investigated by ion mobility spectrometry and mass-selected spectroscopic methods
• Photoinduced dissociation reaction mechanisms of cluster ions from the imaging detection of angular- and kinetic energy distributions of fragment ions
• Isomerization and dissociation process of molecules by quantum chemical calculations

Overview of Research

Chemical reaction starts with processes in which two or more atoms or molecules interact after approaching each other. Various physical and chemical processes, such as energy and momentum transfer, electron transfer, or nucleation (cluster formation), also occur, in addition to “ordinary” chemical reactions. By applying atomic and molecular collision experiments combined with mass spectrometry and spectroscopic methods, we can unveil details of interparticle interactions, reaction mechanisms, and the key factor of the reaction driving force. In our laboratory, we are aiming at elucidating chemical reaction mechanisms in condensed phase and discovering new stable chemical species like fullerenes, which are characteristic to the intermediate phase, from the study of clusters. Our main target among the clusters are: Complex systems consisting of metal atoms and molecules (e.g. Mg+ICH3, Cun+N2), valence bond systems (e.g. Cn+, Sin+), ion crystals (e.g. NanFn-1+), and so on. Some other research projects are running such as “spectroscopy and reaction studies of cluster ions formed by sputtering or discharge methods” and “mass production and characterization of atom endohedral fullerenes.” We are now challenging the above problems and also other new research themes.

Selected Publications

• Structures and CO-Adsorption Reactivities of Nickel Oxide Cluster Cations Studied by Ion Mobility Mass Spectrometry, K. Ohshimo, S. Azuma, T. Komukai, R. Moriyama, and F. Misaizu, J. Phys. Chem. C, 119, 11014-11021 (2015).
• Even-odd Product Variation of the Cn+ + D2 (n = 4-9) Reaction: Complexity of the Linear Carbon Cation Electronic States, K. Koyasu, T. Ohtaki, J. Bing, K. Takahashi, and F. Misaizu, Phys. Chem. Chem. Phys., 17, 24810-24819 (2015).
• Photofragment ion imaging from mass-selected Mg+BrCH3 complex: Dissociation mechanism following photoinduced charge transfer, K. Okutsu, K. Yamazaki, K. Ohshimo, and F. Misaizu, J. Chem. Phys. 146, 024301 (2017). (6 pages).
• Observation of Anisotropic Interactions between Metastable Atoms and Target Molecules by Two-Dimensional Collisional Ionization Electron Spectroscopy, N. Kishimoto and K. Ohno, Int. Rev. Phys. Chem., 26, 93-138 (2007).

Contact Information

“Please delete “/” after “@” in a mail address.”
Fuminori MISAIZU
(TEL +81-22-795-6577, Email: misaizu＠/m.tohoku.ac.jp)
Naoki KISHIMOTO
(TEL +81-22-795-6576, Email: kishimoto＠/m.tohoku.ac.jp)
Keijiro OHSHIMO
(TEL +81-22-795-6579, Email: ohshimo＠/m.tohoku.ac.jp)
Motoyoshi NAKANO
(TEL +81-22-795-6578, Email: nakano.motoyoshi＠/m.tohoku.ac.jp)
FAX +81-22-795-6580
website: http://qpcrkk.chem.tohoku.ac.jp/index-e.html