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Chemistry Dept.

Dept. of Chemistry
OKAYAMA UNIVERSITY
Okayama-shi, Kita-ku
Tsushimanaka 3-1-1
JAPAN 700-8530
FAX: 086-251-7853

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Tomonari Sumi

Tomonari Sumi

Associate Professor

Research field : Theoretical Physical Chemistry

email

Office: 

B329, Faculty of Science Main building (Building 1)
Tsushima-Naka 3-1-1, Okayama 700-8530

Tel: 086-251-7837

My Web

Academic Background

  • Associate Professor, Okayama University, 2013
  • Visiting Scientist, Max Planck Institute of Colloids and Interfaces, Potsdam, Germany,  2011-2012
  • Assistant Professor, Toyohashi University of Technology, 2007-2013
  • Research Associate, Toyohashi University of Technology, 2002-2007
  • Research Fellow of the Japan Society for the Promotion of Science, 1999,
    Institute for Molecular Science
  • Ph. D.: Kyushu University, 1996-1999 (Depertment of Applied Physics)
  • Master: Kyushu University, 1994-1996 (Depertment of Applied Physics)
  • Bachelor: Yamaguchi University, 1990-1994 (Depertment of Physics)

Selected Publication

  • Possible mechanism underlying high-pressure unfolding of proteins: Formation of short-period high-density hydration shell
    T. Sumi and H. Sekino, Phys. Chem. Chem. Phys. (Communication) 13, 15829–15832, (2011).
  • Generality of Anomalous Expansion of Polymer Chains in Supercritical Fluids
    T. Koga, P. Gin, H. Yamaguch, M. Endoh, M. Asada, L. Sendogdular, M. Kobayashi, A.Takahara, B. Akgun, S. Satija, and T. Sumi, Polymer 52, 4331–4336 (2011).
  • Hydrophobic effects on multivalent-salt-induced self-condensation of DNA
    T. Sumi, C. Suzuki, and H. Sekino, J. Chem. Phys. 131, 161103, 1–4, (Communication) (2009).
  • Critical Casimir effect in a polymer chain in supercritical solvents
    T. Sumi, N. Imazaki, and H. Sekino, Phys. Rev. E 79, 030801(R), 1–4 (2009).
  • Metal-nonmetal transition in dense fluid hydrogen
    T. Sumi and H. Sekino, J. Chem. Phys. 128, 044712, 1–7 (2008).
  • Behavior of a polymer chain immersed in a binary mixture of solvents
    T. Sumi, K. Kobayashi, and H. Sekino, J. Chem. Phys. 127, 164904, 1–7  (2007).
  • An interaction site model integral equation study of molecular fluids explicitly considering the molecular orientation
    T. Sumi and H. Sekino, J. Chem. Phys. 125, 034509, 1–9 (2006).
  • A Cooperative phenomenon between polymer chain and supercritical solvents: Remarkable expansions of solvophobic and solvophilic polymers
    T. Sumi and H. Sekino, J. Chem. Phys. 122, 194910, 1–11 (2005).
  • PUBLICATION LIST

Proceeding / Presentation

  • 高圧変性の新たな側面:水和殻物性の蛋白質構造依存性 (招待講演)
    墨智成 (第11回日本蛋白質科学会年会ワークショップ「蛋白質の構造変化と水和−圧力効果の理論と実験の協奏に向けて−」大阪・ホテル阪急エキスポパーク, 2011年6月)
  • 疎水性高分子鎖の水和物性から見たタンパク質の変性機構 (招待講演)
    墨智成 (高分子基礎物性研究会「高圧下における高分子」,  東工大大岡山キャンパス蔵前会館3F 手島精一記念会議室, 2011年6月)
  • 水の物性に着目した蛋白質の変性機構 (招待講演)
    墨智成 (第23期CAMMフォーラム 本例会, 東京・表参道アイビーホール, 2010年6月)
  • オスモライトによる蛋白質の変性メカニズム:添加物分子の水への親和性の重要性 (招待講演)
    墨智成 (日本物理学会年次大会2010,領域12シンポジウム,  岡山大学, 2010年3月)
  • 高密度流体水素の金属ープラズマクロスオーバーおよび金属ー非金属転移 (招待講演)
    墨智成 (分子研若手研究会, 岡崎コンファレンスセンター,2008年1月)
  • Possible mechanism underlying high-pressure unfolding of proteins: Formation of short-period high-density hydration shell (Invited talk)
    T. Sumi and H. Sekino (49th EHPRG conference, Budapest, Hungary, Aug. 2011)
  • Possible mechanism underlying high-pressure unfolding of proteins: Formation of short-period high-density hydration shell (Invited talk)
    T. Sumi and H. Sekino (International Symposium on Molecular Science of Fluctuations toward Biological Functions, Okazaki, Japan, Mar. 2011)
  • Multivalent-salt-induced hydrophobic effects on self-condensation of highly charged polyelectrolyte chain (Invited talk)
    T. Sumi and H. Sekino (IUPAC 6th International Symposium on Novel Materials and Synthesis (NMS-VI) & 20th International Symposium on Fine Chemistry and Functional Polymers (FCFP-XX), Wuhan, China, Oct. 2010)
  • A possible mechanism of high-pressure unfolding of proteins: Formation of high-density hydration shell (Invited lecture)
    T. Sumi and H. Sekino (4th Mini-symposium on liquids (MSL4, 2010), Fukuoka, Japan, Jun. 2010)
  • Density-functional theory for thermodynamic properties of condensed systems consisting of quantum and classical particles (Invited talk)
    T. Sumi and H. Sekino (PACIFICHEM2005,  Honolulu, Hawaii, Dec. 2005)

Research Collaboration

  • K. Koga, Okayama University, Okayama, Japan, 2013-
  • F. Zhang, Tuebingen University, Tuebingen, Germany, 2014-
  • Y. Maruyama, Keio University, Yokohama, Japan, 2013-
  • S. Klumpp, Max Planck Institute of Colloids and Interfaces, Potsdam, Germany, 2011-
  • T. Koga, Stony Brook University, Stony Brook, NY, USA, 2009-2011.
  • T. Morita and H. Imamura, Chiba Univercity, Chiba, Japan, 2006-
  • H. Sekino, Toyohashi University of Technology, Toyohashi, Japan, 2002-

 

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