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2013 Fiscal Year Annual Research Report

量子多成分系分子理論システムの構築およびプロトニクス・ポジトロニクスへの展開

Research Project

Project/Area Number 23350010
Research InstitutionYokohama City University

Principal Investigator

立川 仁典  横浜市立大学, その他の研究科, 教授 (00267410)

Co-Investigator(Kenkyū-buntansha) 志賀 基之  独立行政法人日本原子力研究開発機構, その他部局等, 研究員 (40370407)
長嶋 雲兵  独立行政法人産業技術総合研究所, その他部局等, 研究員 (90164417)
Project Period (FY) 2011-04-01 – 2014-03-31
Keywords量子多成分系分子理論 / プロト二クス / ポジトロ二クス / 量子モンテカルロ法 / 経路積分シミュレーション
Research Abstract

本研究課題の第一の目的は、我々が展開してきた手法を深化させ、(1)量子多成分系分子理論システムを構築することにある。具体的には、①高精度・大規模手法を開発すると同時に、②効率的並列計算のためのシステムを実装する。第二の目的は、(2)核の量子効果や陽電子を含んだ系の高精度・大規模計算を実現する。これにより①水素・陽子が関わるプロトニクスや②陽電子が関わるポジトロニクスに対して基盤情報を与え、得られた結果を実験グループにフィードバックすることで、それら基盤技術の推進に寄与する。
最終年度にあたる本年度は、(1)量子多成分系分子理論システムのさらなる構築、および(2)核の量子効果や陽電子を含んだ系の計算結果のまとめを実行した。(1)量子多成分系分子理論システムの構築では、手法開発として、核の量子効果と周囲環境の効果を併せて取り入れた、新しい高精度量子化学計算手法の開発を実施した。システム実装としては、入出力部分の改良をはかると共に、一時ファイルの共通化をはかった。(2)高精度・大規模計算の実現として、picolinic acid N-oxideの化学シフトの解析を行い、(i)核の量子効果と溶媒効果はともにOH結合距離を伸長させ、化学シフトを増大させる寄与を持つこと、(ii)その両方の寄与を考慮することで同位体シフトの実験値を定性的に再現できること、(iii)計算された同位体シフトには幾何学的同位体効果が強く影響していること、の三点を明らかにした。また、様々な陽電子化合物の計算を実現することに成功した。

Current Status of Research Progress
Reason

25年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

25年度が最終年度であるため、記入しない。

  • Research Products

    (29 results)

All 2014 2013 Other

All Journal Article (19 results) (of which Peer Reviewed: 16 results) Presentation (9 results) (of which Invited: 8 results) Remarks (1 results)

  • [Journal Article] Semiempirical investigations on the stabilization energies and ionic hydrogen-bonded structures of F-(H2O)n and Cl-(H2O)n (n=1-4) clusters2014

    • Author(s)
      Q. Wang, K. Suzuki, U. Nagashima, M. Tachikawa, and S. Yan
    • Journal Title

      J. Theoret. Appl. Phys.

      Volume: xx Pages: xx

    • Peer Reviewed
  • [Journal Article] Quantum chemical investigation of the Doppler broadening of positron annihilation radiation spectra in polymers2014

    • Author(s)
      K. Koyanagi, Y. Kita, K. Sato, Y. Kobayashi, and M. Tachikawa
    • Journal Title

      Chin. J. Phys.

      Volume: xx Pages: xx

    • Peer Reviewed
  • [Journal Article] Theoretical study of substituent effect on the electronic excited states of chromophore in cyan fluorescent proteins2014

    • Author(s)
      M. Takahashi, J. Koseki, Y. Kita, Y. Kawashima, and M. Tachikawa
    • Journal Title

      Chin. J. Phys.

      Volume: xx Pages: xx

    • Peer Reviewed
  • [Journal Article] Muon-electron hyperfine coupling constants of muoniated ethyl radical: a path integral simulations with semi-empirical molecular orbital study2014

    • Author(s)
      K. Yamada, Y. Kawashima, and M. Tachikawa
    • Journal Title

      Chin. J. Phys.

      Volume: xx Pages: xx

    • Peer Reviewed
  • [Journal Article] Why is N...Be distance of NH3H+...DBeH shorter than that of NH3D+...HBeH? Paradoxical geometrical isotope effects for partially isotope-substituted dihydrogen-bonded isotopomers2014

    • Author(s)
      T. Udagawa and M. Tachikawa
    • Journal Title

      J. Comput. Chem. (Communication)

      Volume: 35 Pages: 271-274

    • Peer Reviewed
  • [Journal Article] Molecular dynamics and principal components analysis for a self-assembled nanocube in aqueous solution2014

    • Author(s)
      T. Mashiko, K. Yamada, T. Kojima, S. Hiraoka, U. Nagashima, and M. Tachikawa
    • Journal Title

      Chem. Lett.

      Volume: xx Pages: xx

    • Peer Reviewed
  • [Journal Article] An Ab Initio Path Integral Molecular Dynamics Study of the Nuclear Quantum Effect on Out-of-plane Ring Deformation of Hydrogen Maleate Anion2014

    • Author(s)
      Y. Kawashima and M. Tachikawa
    • Journal Title

      J. Chem. Theor. Comput.

      Volume: xx Pages: xx

    • Peer Reviewed
  • [Journal Article] Binding of a Positron to Nucleic Base Molecules and Their Pairs2013

    • Author(s)
      K. Koyanagi, Y. Kita, Y. Shigeta, and M. Tachikawa
    • Journal Title

      ChemPhysChem (Communication)

      Volume: 14 Pages: 3458-3462

  • [Journal Article] Theoretical Study of H/D Isotope Effects on Nuclear Magnetic Shieldings Using an ab initio Multi-Component Molecular Orbital Method2013

    • Author(s)
      T. Udagawa, T. Ishimoto, and M. Tachikawa
    • Journal Title

      Molecules

      Volume: 18 Pages: 5209-5220

  • [Journal Article] Theoretical analysis of phase transition temperature of hydrogen-bonded dielectric materials induced by H/D isotope effect2013

    • Author(s)
      T. Ishimoto and M. Tachikawa
    • Journal Title

      Progress in Theoretical Chemistry and Physics

      Volume: B27 Pages: 303-329

  • [Journal Article] Gold-standard coupled-cluster study of the ground-state chromium dimer cation2013

    • Author(s)
      Y. Yamada, K. Hongo, K. Egashira, Y. Kita, U. Nagashima, and M. Tachikawa
    • Journal Title

      Chem. Phys. Lett.

      Volume: 555 Pages: 84-86

    • Peer Reviewed
  • [Journal Article] Theoretical analysis of the geometrical isotope effect on the hydrogen bonds in photoactive yellow protein with muti-component density functional theory2013

    • Author(s)
      Y. Kita, H. Kamikubo, M. Kataoka, and M. Tachikawa
    • Journal Title

      Chem. Phys.

      Volume: 419 Pages: 50-53

    • Peer Reviewed
  • [Journal Article] Quantum fluctuation and vibrational dynamics of aqueous Cu+ and Ag+ clusters2013

    • Author(s)
      A. Koizumi, M. Tachikawa, and M. Shiga
    • Journal Title

      Chem. Phys.

      Volume: 419 Pages: 44-49

    • Peer Reviewed
  • [Journal Article] Path integral molecular dynamic study of nuclear quantum effect on small chloride water clusters of Cl-(H2O)1-42013

    • Author(s)
      Q. Wang, K. Suzuki, U. Nagashima, M. Tachikawa, and S. Yan
    • Journal Title

      Chem. Phys.

      Volume: 419 Pages: 229-236

    • Peer Reviewed
  • [Journal Article] Nuclear quantum effect on intramolecular hydrogen bond of hydrogen maleate anion: An ab initio path integral molecular dynamics study2013

    • Author(s)
      Y. Kawashima and M. Tachikawa
    • Journal Title

      Chem. Phys. Lett.

      Volume: 571 Pages: 23-27

    • Peer Reviewed
  • [Journal Article] Temperature dependence on the structure of Zundel cation and its isotopomers2013

    • Author(s)
      K. Suzuki, M. Tachikawa, and M. Shiga
    • Journal Title

      J. Chem. Phys.

      Volume: 138 Pages: 184307 (7pages)

    • Peer Reviewed
  • [Journal Article] Ab initio path integral simulations for the fluoride ion-water clusters: Competitive nuclear quantum effect between F--water and water-water hydrogen bonds2013

    • Author(s)
      Y. Kawashima, K. Suzuki, and M. Tachikawa
    • Journal Title

      J. Phys. Chem. A

      Volume: 117 Pages: 5205-5210

    • Peer Reviewed
  • [Journal Article] Nuclear quantum effect on protonated Lysine with asymmetric low barrier hydrogen bond: ab initio path integral molecular dynamics study2013

    • Author(s)
      Y. Ogata, M. Daido, Y. Kawashima, and M. Tachikawa
    • Journal Title

      RSC Advances

      Volume: 3 Pages: 25252-25257

    • Peer Reviewed
  • [Journal Article] Geometric isotope effects on small chloride ion water clusters with path integral molecular dynamics simulations2013

    • Author(s)
      Q. Wang, K. Suzuki, U. Nagashima, M. Tachikawa, and S. Yan
    • Journal Title

      Chem. Phys.

      Volume: 426 Pages: 38-47

    • Peer Reviewed
  • [Presentation] First-principles calculation for positron binding to molecules2013

    • Author(s)
      Masanori Tachikawa
    • Organizer
      5th JCS International Symposium on Theoretical Chemistry
    • Place of Presentation
      Nara, Japan
    • Year and Date
      20131202-20131206
    • Invited
  • [Presentation] 植物の生合成代謝経路や光防御機構の解明のための量子化学計算アプローチ2013

    • Author(s)
      立川仁典
    • Organizer
      The Chem-Bio Informatics Society 2013
    • Place of Presentation
      Funabori, Japan
    • Year and Date
      20131031-20131031
    • Invited
  • [Presentation] 水素系の量子化学 -量子多成分系分子理論の開発-2013

    • Author(s)
      立川仁典
    • Organizer
      日本コンピュータ化学会2013年秋季年会
    • Place of Presentation
      伊都
    • Year and Date
      20131018-20131018
  • [Presentation] エキゾチック分子系にむけた量子多成分系分子理論の開発2013

    • Author(s)
      立川仁典
    • Organizer
      化学反応経路探索のニューフロンティア2013
    • Place of Presentation
      京都
    • Year and Date
      20130928-20130928
    • Invited
  • [Presentation] Multi-component molecular methods for hydrogen bonded systems and positronic compounds2013

    • Author(s)
      Masanori Tachikawa
    • Organizer
      ISTCP-VIII (The VIIIth Congress of the International Society of Theoretical Chemical Physics)
    • Place of Presentation
      Budapest, Hungary
    • Year and Date
      20130825-20130831
    • Invited
  • [Presentation] First-principles calculation for positron binding to molecules2013

    • Author(s)
      Masanori Tachikawa
    • Organizer
      ICPEAC2013 (XXVIII International Conference on Photonic, Electronic and Atomic Collisions)
    • Place of Presentation
      Lanzhou, China
    • Year and Date
      20130724-20130730
    • Invited
  • [Presentation] First-principles calculation for positron binding to molecules2013

    • Author(s)
      Masanori Tachikawa
    • Organizer
      POSMOL2013 (XVII Int. Workshop on Low-Energy Positron and Positronium Physics & XVIII Int. Symposium on Electron-Molecule Collisions and Swarms)
    • Place of Presentation
      Kanazawa, Japan
    • Year and Date
      20130719-20130721
    • Invited
  • [Presentation] Multi-component molecular methods for hydrogen bonded systems and positronic compounds2013

    • Author(s)
      Masanori Tachikawa
    • Organizer
      6th Asia-Pacific Conference of Theoretical and Computational Chemsitry (APCTCC6)
    • Place of Presentation
      Gyeongju, Korea
    • Year and Date
      20130710-20130713
    • Invited
  • [Presentation] PATH INTEGRAL MOLECULAR DYNAMICS SIMULATION: PROTONIC QUANTUM NATURE AND ITS ISOTOPE EFFECT2013

    • Author(s)
      Masanori Tachikawa
    • Organizer
      ISOTOPES2013
    • Place of Presentation
      Sopot, Poland
    • Year and Date
      20130616-20130621
    • Invited
  • [Remarks] 横浜市立大学量子物理化学研究室

    • URL

      http://www-user.yokohama-cu.ac.jp/~tachi/

URL: 

Published: 2015-05-28  

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