• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

PROPERTY DEVELOPMENT OF NOVEL ENDOHEDRAL FULLERENES THROUGH SYNTHETIC RESEARCH

Research Project

Project/Area Number 18550033
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Organic chemistry
Research InstitutionFukui University of Technology

Principal Investigator

KOMATSU Koichi  Fukui University of Technology, DEPARTMENT OF ENGINEERING, PROFESSOR (70026243)

Co-Investigator(Kenkyū-buntansha) MURATA Yasujiro  KYOTO UNIVERSITY, INSTITUTE FOR CHEMICAL RESEARCH, ASSOCIATE PROFESSOR (40314273)
Project Period (FY) 2006 – 2007
Project Status Completed (Fiscal Year 2007)
Budget Amount *help
¥4,110,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥510,000)
Fiscal Year 2007: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2006: ¥1,900,000 (Direct Cost: ¥1,900,000)
KeywordsEndohedral Fullerene / Superconductivity / Spin-lattice Relaxation / Excited Singlet Oxygen / Open-cage Fullerene / Molecular Hydrogen / Selenium / Nitroxide Radical / 分子手術法 / ヘリウム内包フラーレン / セレン含有開口フラーレン / 電気化学 / フラーレン2価アニオン / NMR低磁場シフト / アルカリ金属 / ドーピング / 一重項酸素 / レーザー照射
Research Abstract

We have established the molecular surgical method for the creation of endohedral fullerenes, which were obtained only in minute amounts according to the conventional physical procedures. The present research aims at the development of new properties in this kind of new endohedral fullerenes.
1. Endohedral fullerenes encapsulating hydrogen and also deuterium, H2@C60 and D2@C60, were newly synthesized according to the molecular surgical method.
2. An endohedral fullerene doped with potassium, K3/H2@C60, was prepared and it was shown to become an electric superconducter below the critical temperature of Tc=19.2K. This is the same temperature observed for empty C60, indicating the absence of any electronic interaction between encapsulated hydrogen and the fullerene cage under the K-doped conditions.
3. The bimolecular contribution to the spin-lattice relaxation rate for the protons of H2 and H2@C60 dissolved in various organic solvents was measured in the presence of paramagnetic nitroxide ra … More dicals. It was found that the relaxation effect of the paramagnets is enhanced five-fold in H2@C60 compared to H2 under the same conditions.
4. The quenching of singlet molecular oxygen ^1O2 by C60, H2@C60, and D2@C60 was examined and compared with that by free H2 and D2 in solution. The rate constants for quenching of ^1O2 by H2@C60 and D2@C60 were found to be larger than those for the quenching of ^1O2 by H2 and D2. This indicates that the presence of a pi-conjugated C60 cage plays an important role for the, ^1O2 quenching.
5. Open-cage fullerenes incorporating a He atom and a H2 molecule were synthesized. The ^1H NMR chemical shift of a proton attached outside the cage is influenced by the inside guest species, thus indicating the presence of some interaction between the guest species and the open-cage fullerene cage.
6. An open-cage fullerene having a selenium atom instead of sulfur at the rim of a 13-membered-ring orifice was newly synthesized. The encapsulation and release of a hydrogen molecule were examined, and it was found that activation of these processes is smaller indicating that the orifice size has been enlarged by introduction of the selenium atom. Less

Report

(3 results)
  • 2007 Annual Research Report   Final Research Report Summary
  • 2006 Annual Research Report
  • Research Products

    (23 results)

All 2008 2007 2006

All Journal Article (18 results) (of which Peer Reviewed: 6 results) Presentation (4 results) Book (1 results)

  • [Journal Article] Internal Magnetic Fields of Dianions of Fullerene C_<60>, Its Cage-Opened Derivatives Studied by Encapsulated H_2 as an NMR Probe2008

    • Author(s)
      M. Murata, Y. Ochi, F. Tanabe, K. Komatsu, Y. Murata
    • Journal Title

      Angew. Chem. Int. Ed. 47

      Pages: 2039-2041

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Can H_2 Inside C_60 Communicate with the Outside World2007

    • Author(s)
      J.Lopez-Gejo
    • Journal Title

      Journal of the American Chemical Society 129

      Pages: 14554-14555

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Can H_2 Inside C_<60> Communicate with the Outside World?2007

    • Author(s)
      J. Lopez-Gejo, A. A. Marti, M. Ruzzi, S. Jockusch, K. Komatsu, Y. Murata, N. J. Turro
    • Journal Title

      J. Am. Chem. Soc. 129

      Pages: 14554-14555

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Fine Tuning of the Orifice Size of an Open-Cage Fullerene by Placing Selenium in the Rim : Insertion/Release of Molecular Hydrogen2007

    • Author(s)
      S-C. Chuang, Y. Murata, M. Murata, S. Mori, S. Maeda, F. Tanabe, K. Komatsu
    • Journal Title

      Chem. Commun.

      Pages: 1278-1280

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] The Outside Knows the Difference Inside : Trapping Helium by Immediate Reduction of Orifice Size of an Open-Cage Fullerene and the Effect of Encapsulated Helium and Hydrogen upon the NMR of Proton Directly Attached to the Outside2007

    • Author(s)
      S-C. Chuang, Y. Murata, M. Murata, K. Komatsu
    • Journal Title

      Chem. Commun.

      Pages: 1751-1753

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Electrochemistry of an Open-Cage Fullerene Embedded in a Film of Hydrophobic Ammonium Ion on an Electrode2007

    • Author(s)
      K. Watanabe
    • Journal Title

      Journal of Physical Chemistry-C 111

      Pages: 6500-6504

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] An Orifice-Size Index for Open-Cage Fullerenes2007

    • Author(s)
      S-C. Chuang
    • Journal Title

      The Journal of Organic Chemistry 72

      Pages: 6447-6453

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Can H_2 Inside C_<60> Communicate with the Outside World?2007

    • Author(s)
      J. Lopez-Gejo
    • Journal Title

      Journal of the American Chemical Society 129

      Pages: 14554-14555

    • Related Report
      2007 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Fine Tuning of the Orifice Size of an Open-Cage Fullerene by Placing Selenium in the Rim : Insertion/Release of Molecular Hydrogen2007

    • Author(s)
      S-C.Chuang
    • Journal Title

      Chemical Communications 2007

      Pages: 1278-1278

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Epitaxial Supramolecular Assembly of Fullerenes Formed by Using Coronene Template on Au(111) Surface in Solution2007

    • Author(s)
      S.Yoshimoto
    • Journal Title

      Journal of the American Chemical Society 129(印刷中)

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Synthesis and Properties of Endohedral C_60 Encapsulating Molecular Hydrogen2006

    • Author(s)
      M.Murata
    • Journal Title

      Journal of the American Chemical Society 128

      Pages: 8024-8033

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Nuclear Relaxation of H_2 and H_2@C_60 in Organic Solvents2006

    • Author(s)
      E.Sartori
    • Journal Title

      Journal of the American Chemical Society 128

      Pages: 14752-14753

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
    • Peer Reviewed
  • [Journal Article] Synthesis and Properties of Endohedral C_<60> Encapsulating Molecular Hydrogen2006

    • Author(s)
      M. Murata, Y. Murata, K. Komatsu
    • Journal Title

      J. Am. Chem. Soc. 128

      Pages: 8024-8033

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Nuclear Relaxation of H_2, H_2@C_<60> in Organic Solvents2006

    • Author(s)
      E. Sartori, M. Ruzzi, N. J. Turro, J. D. Decatur, D. C. Doetschman, R. G. Lawler, A. L. Buchachenko, Y. Murata, K. Komatsu
    • Journal Title

      J. Am. Chem. Soc. 128

      Pages: 14752-14753

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Journal Article] Photoinduced Charge Separation and Charge Recombination in Terthiophene-Acetylene-Fullerene Linked Dyads2006

    • Author(s)
      T.Nakamura
    • Journal Title

      Journal of Photochemistry & Photobiology A : Chem. 178

      Pages: 242-242

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Cryogenic NMR Spectroscopy of Endohedral Hydrogen-Fullerene Complexes2006

    • Author(s)
      M.Carravetta
    • Journal Title

      Journal of Chemical Physics 124

      Pages: 104507-104507

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Synthesis and Properties of Endohedral C60 Encapsulating Molecular Hydrogen2006

    • Author(s)
      M.Murata
    • Journal Title

      Journal of the American Chemical Society 128

      Pages: 8024-8024

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Nuclear Relaxation of H2 and H2@C60 in Organic Solvents2006

    • Author(s)
      E.Sartori
    • Journal Title

      Journal of the American Chemical Society 128

      Pages: 14752-14752

    • Related Report
      2006 Annual Research Report
  • [Presentation] Organic Chemistry of Fullerenes:Solid-State Reaction to Molecular Surgery(基調講演)2007

    • Author(s)
      小松 紘一
    • Organizer
      The 15th European Symposium on Organic Chemistry
    • Place of Presentation
      University College,Dublin,Ireland
    • Year and Date
      2007-07-09
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Organic Chemistry of Fullerenes: Solid-State Reaction to Molecular Surgery(基調講演)2007

    • Author(s)
      小松 紘一
    • Organizer
      The 15th European Symposium on Organic Chemistry
    • Place of Presentation
      University College, Dublin, Ireland
    • Year and Date
      2007-07-09
    • Related Report
      2007 Annual Research Report
  • [Presentation] Organic Chemistry of Fullerenes : Solid-State Reaction to Molecular Surgery2007

    • Author(s)
      Koichi Komatsu
    • Organizer
      The 15th European Symposium on Organic Chemistry
    • Place of Presentation
      Dublin, Ireland
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Presentation] Fine Tuning of the Orifice Size : Synthesis and Properties of Selenium-Containing Open-Cage C602007

    • Author(s)
      Y. Murata, S-C. Cuang, M. Murata, K. Komatsu
    • Organizer
      The 211th Electrochemical Society Meeting
    • Place of Presentation
      Chicago, U.S.A.
    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2007 Final Research Report Summary
  • [Book] ナノカーボンハンドブック2007

    • Author(s)
      小松 紘一
    • Total Pages
      5
    • Publisher
      エヌティーエス出版
    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2007 Annual Research Report 2007 Final Research Report Summary

URL: 

Published: 2006-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi