研究者詳細 - 山口　毅

論文 - 山口　毅

分割表示 135 件中 101 - 120 件目／全件表示 >>

Observation of Ultrasonic Relaxation due to Micelle-Monomer Exchange Process in Aqueous Solutions of Rodlike Micelles 査読有り

Tatsuro Matsuoka, Yukihiro Masuda, Tsuyoshi Yamaguchi and Shinobu Koda

Japanese Journal of Applied Physics 43 巻 ( 5B ) 頁： 2924-2925 2005年

Nuclear Magnetic Resonance and Molecular Dynamics Simulation Study on the Reorientational Relaxation of Solutes in Supercritical Methanol 査読有り

Tsuyoshi Yamaguchi, Nobuyuki Matubayasi, and Masaru Nakahara

Journal of Molecular Liquids 119 巻 ( 1-3 ) 頁： 119-123 2005年

Solvation dynamics in water investigated by RISM/mode-coupling theory 査読有り

Katsura Nishiyama, Tsuyoshi Yamaguchi, Fumio Hirata, and Tadashi Okada

Journal of Molecular Liquids 119 巻 ( 1-3 ) 頁： 63-66 2005年

Pressure dependence of diffusion coefficient and orientational relaxtion time for acetonitrile and methanol in water: DRISM/mode-coupling study 査読有り

A. E. Kobryn, T. Yamaguchi, and F. Hirata

Journal of Molecular Liquids 119 巻 ( 1-3 ) 頁： 7-13 2005年

Molecular dynamics simulation study on the transient response of solvation structure during the translational diffusion of solute 査読有り

T. Yamaguchi, T. Matsuoka, and S. Koda

Journal of Chemical Physics 122 巻 ( 1 ) 頁： 014512 2005年

Site-site memory equation approach in study of density/pressure dependence of translational diffusion coefficient and rotational relaxation time of polar molecular solutions: acetonitrile in water, methanol in water, and methanol in acetonitrile 査読有り

A. E. Kobryn, T. Yamaguchi, and F. Hirata

Journal of Chemical Physics 122 巻 ( 18 ) 頁： 184511 2005年

Generalized Langevin theory on the dynamics of simple fluids under external fields 査読有り

T. Yamaguchi, T. Matsuoka and S. Koda

Journal of Chemical Physics 123 巻 ( 3 ) 頁： 034504 2005年

Solute dependence of polar solvation dynamics studied by RISM/mode-coupling theory 査読有り

Katsura Nishiyama, Tsuyoshi Yamaguchi, Fumio Hirata, and Tadashi Okada

Journal of Solution Chemistry 33 巻 ( 6-7 ) 頁： 631-639 2004年

Polar solvation dynamics: A combination of the reference interaction-site model and mode-coupling theories

Katsura Nishiyama, Tsuyoshi Yamaguchi, Fumio Hirata and Tadashi Okada

Pure and Applied Chemistry 76 巻 ( 1 ) 頁： 71-77 2004年

Nuclear Magnetic Resonance Study on the Reorientational Relaxation in Supercritical Alcohols 査読有り

Tsuyoshi Yamaguchi, Nobuyuki Natubayasi, and Masaru Nakahara

Journal of Physical Chemistry A 108 巻 ( 8 ) 頁： 1319-1324 2004年

Mode-coupling analysis of the translational and rotational diffusion of polar liquids; acetonitrile and water 査読有り

T. Yamaguchi, S.-H. Chong and F. Hirata

Journal of Molecular Liquids 112 巻 ( 3 ) 頁： 117-124 2004年

Mode-coupling study on the dynamics of hydrophobic hydration 査読有り

T. Yamaguchi, T. Matsuoka and S. Koda

Journal of Chemical Physics 120 巻頁： 7590-7601 2004年

担当区分：筆頭著者記述言語：英語掲載種別：研究論文（学術雑誌）

The molecular motion of water in water-hydrophobic solute mixtures was investigated by the mode-coupling theory for molecular liquids based on the interaction-site description. When the model Lennard-Jones (LJ) solute
was mixed with water, both the translational and reorientational motions of solvent water
become slower, in harmony with various experiments and
molecular dynamics simulations. We compared the mechanism of the slowing down with that of the pressure dependence of the molecular motion of neat water [T. Yamaguchi, S.-H. Chong and F. Hirata, J. Chem. Phys. 119, 1021-1034 (2003)]. We found that the decrease in the solvent mobility caused by the solute can essentially
be elucidated by the same mechanism, that is, the fluctuation of the number density of solvent due to the cavity formation by the solute strengthens the friction on the collective polarization through the dielectric friction mechanism. We also employed the solute molecule
that is the same as solvent water except for the amount of
partial charges, in order to alter the strength of the solute-solvent interaction continuously.
The mobility of the solvent water was reduced both by
the hydrophobic and strongly hydrophilic solutes, but it
was enhanced in the intermediate case. Such a behavior was discussed in connection with the concept of positive and negative hydrations.

The statistical mechanics of the electro-acoustic effects of liquids 査読有り

T. Yamaguchi, T. Matsuoka and S. Koda

Journal of Chemical Physics 119 巻頁： 4437-4448 2003年

Mode-coupling calculation of the anomalous pressure effect on the ionic conductivity of molten LiBr 査読有り

T. Yamaguchi, T. Matsuoka and S. Koda

Journal of Chemical Physics 119 巻 ( 21 ) 頁： 11306-11317 2003年

A theoretical study on the anomalous pressure dependence of the transport properties of ionic liquids:Comparison among lithium bromide, silica and water 査読有り

T. Yamaguchi, A. Nagao, T. Matsuoka and S. Koda

Journal of Chemical Physics 119 巻頁： 11306-11317 2003年

Theoretical study on the molecular motion of liquid water under high pressure 査読有り

T. Yamaguchi, S.-H. Chong, and F. Hirata

Journal of Chemical Physics 119 巻頁： 1021-1034 2003年

Dielectric relaxation spectrum of water studied by the site-site generalized Langevin / modified mode-coupling theory 査読有り

T. Yamaguchi, S.-H. Chong, and F. Hirata

Molecular Physics 101 巻頁： 1211-1220 2003年

The Study of the Nonpolar Solvation Dynamics in Supercritical Lennard-Jones Fluids in Terms of the Solvent Dynamic Structure Factor 査読有り

T. Yamaguchi, Y. Kimura and M. Nakahara

Journal of Physical Chemistry B 106 巻 ( 35 ) 頁： 9126-9134 2002年

Translational diffusion and reorientational realxation of water analyzed by site-site generalized Langevin theory 査読有り

T. Yamaguchi, S.-H. Chong, and F. Hirata

Journal of Chemical Physics 116 巻頁： 2502-2507 2002年

Interaction-site model description of the reorientational relaxation of molecular liquids: Incorporation of the interaxial coupling into the site-site generalized Langevin / mode-coupling theory 査読有り

T. Yamaguchi and F. Hirata

Journal of Chemical Physics 117 巻頁： 2216-2224 2002年

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