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2010 Fiscal Year Annual Research Report

π空間に閉じこめられた物質系の創製と機能

Planned Research

Project AreaEmergence of highly elaborated pai-space and its function
Project/Area Number 20108002
Research InstitutionUniversity of Tsukuba

Principal Investigator

赤阪 健  筑波大学, 大学院・数理物質科学研究科, 教授 (60089810)

Co-Investigator(Kenkyū-buntansha) 土屋 敬広  筑波大学, 大学院・数理物質科学研究科, 講師 (10375412)
山田 道夫  東京学芸大学, 教育学部, 助教 (00583098)
Keywords金属内包フラーレン / 化学修飾 / π電子 / π曲面 / π空間
Research Abstract

本研究では、湾曲した拡張π電子系を有するフラーレン内部の高次π空間に常磁性金属原子を取り込んだ金属内包フラーレンを鍵物質とし、その高効率で高選択的な化学修飾法の開発を行うと共に機能性金属内包フラーレンを合成する。得られた機能性金属内包フラーレンを超分子的に配列し、磁性-伝導ハイブリッド素子へと展開する。
前年度に引き続き、炭素ケージや内包原子にスピンを有する常磁性内包フラーレン(La@C_<82>、Ce_2@C_<80>、Ce@C_<82>)を大量合成し、我々が開発した簡便分離法を用いて効率的にこれら常磁性内包フラーレンの精製を行った。また、窒素クラスターを炭素ケージに内包する金属内包フラーレンLu_3N@C_<80>、および高い磁性が期待されるGd_3N@C_<80>の合成を試みた。
合成した内包フラーレン等を用いて化学反応性の解明を行うと共に化学修飾による誘導体の合成を行った。内包フラーレンに対し、アダマンチルカルベン、アゾメチンイリド、シクロペンタジエンを用いた反応を行い、高効率および高選択的に化学修飾できることを明らかにした。また、一付加誘導体へのさらなる付加反応で、高選択的に二付加誘導体を合成することにも成功した。申請者らはこれまでの研究により、金属内包フラーレンに対し化学修飾を行うことでフラーレンケージ内内部の静電ポテンシャルが変化し、それに応じて内包金属の動きが変化することを明らかにしてきたが、この内包金属の動きの変化は二番目、三番目の付加に対し段階的且つ位置選択的な反応をもたらすことを実験的にも見出した。これは、高度に制御された化学修飾による金属内包フラーレンの機能化を目標とする本研究にとって重要な意義をもつ結果である。

  • Research Products

    (41 results)

All 2011 2010 Other

All Journal Article (21 results) (of which Peer Reviewed: 21 results) Presentation (14 results) Book (5 results) Remarks (1 results)

  • [Journal Article] Thermal Carbosilylation of Endohedral Dimetallofullerene La_2@I_h-C_<80> with Silirane2010

    • Author(s)
      M.Yamada, et al.
    • Journal Title

      J.Am.Chem.Soc.

      Volume: 132 Pages: 17953-17960

    • Peer Reviewed
  • [Journal Article] Photochemical Addition of C_<60> with Siliranes : Synthesis and Characterization of Carbosilylated and Hydrosilylated C_<60> Derivatives2010

    • Author(s)
      J.Nagatsuka, et al.
    • Journal Title

      J.Am.Chem.Soc.

      Volume: 132 Pages: 12106-12120

    • Peer Reviewed
  • [Journal Article] A Molecular Ce_2@I_h-C_<80> Switch-Unprecedented Oxidative Pathway in Photoinduced Charge Transfer Reactivity2010

    • Author(s)
      D.M.Guldi, et al.
    • Journal Title

      J.Am.Chem.Soc.

      Volume: 132 Pages: 9078-9086

    • Peer Reviewed
  • [Journal Article] Donor-Acceptor Conjugates of Lanthanum Endohedral Metallofullerene and π-Extended Tetrathiafulvalene2010

    • Author(s)
      Y.Takano, et al.
    • Journal Title

      J.Am.Chem.Soc.

      Volume: 132 Pages: 8048-8055

    • Peer Reviewed
  • [Journal Article] Yb@C_<2n>(n=40,41,42) : New Fullerene Allotropes with Unexplored Electrochemical Properties2010

    • Author(s)
      X.Lu, et al.
    • Journal Title

      J.Am.Chem.Soc.

      Volume: 132 Pages: 12106-12120

    • Peer Reviewed
  • [Journal Article] Endohedral Metal Atoms in Pristine and Functionalized Fullerene Cages2010

    • Author(s)
      M.Yamada, et al.
    • Journal Title

      Acc.Chem.Res.

      Volume: 43 Pages: 92-102

    • Peer Reviewed
  • [Journal Article] Dichlorophenyl Derivatives of La@C_<3v>(7)-C_<82> : Endohedral Metal Induced Localization of Pyramidalization and Spin on a Triple-Hexagon Junction2010

    • Author(s)
      T.Akasaka, et al.
    • Journal Title

      Angew.Chem.Int.Ed.

      Volume: 49 Pages: 9715-9719

    • Peer Reviewed
  • [Journal Article] Nitrated Benzyne Derivatives of La@C_<82> : Addition of NO_2 and Its Positional Directing Effect on the Subsequent Addition of Benzynes2010

    • Author(s)
      X.Lu, et al.
    • Journal Title

      Angew.Chem.Int.Ed.

      Volume: 49 Pages: 594-597

    • Peer Reviewed
  • [Journal Article] Retro-reaction of Singly Bonded La@C_<82> Derivatives2010

    • Author(s)
      Y.Takano, et al.
    • Journal Title

      Chem.Commun.

      Volume: 46 Pages: 8035-8036

    • Peer Reviewed
  • [Journal Article] The Effect of Atomic Nitrogen on the C_<60> Cage2010

    • Author(s)
      H.Nikawa, et al.
    • Journal Title

      Chem.Commun.

      Volume: 46 Pages: 631-633

    • Peer Reviewed
  • [Journal Article] Controlled Dispersion and Purification of Protein-Carbon Nanotube Conjugates Using Guanidine Hydrochloride2010

    • Author(s)
      A.Hirano, et al.
    • Journal Title

      Chem.Eur.J.

      Volume: 16 Pages: 12221-12228

    • Peer Reviewed
  • [Journal Article] Electron Donor-Acceptor Interactions in Regioselectively Synthesized exTTF_2-C_<70>(CF_3)_<10> Dyads2010

    • Author(s)
      Y.Takano, et al.
    • Journal Title

      Chem.Eur.J.

      Volume: 16 Pages: 5343-5353

    • Peer Reviewed
  • [Journal Article] Regioselective Exohedral Functionalization of La@C_<82> and its 1,2,3,4,5-pentamethylcyclopentadiene and Adamantylidene Adducts2010

    • Author(s)
      Y.Maeda, et al.
    • Journal Title

      Chem.Eur.J.

      Volume: 16 Pages: 2193-2197

    • Peer Reviewed
  • [Journal Article] Two-step Alkylation of Singlewalled Carbon Nanotubes : Substituent Effect on Sidewall Functionalization2010

    • Author(s)
      Y.Maeda, et al.
    • Journal Title

      Org.Lett.

      Volume: 12 Pages: 996-999

    • Peer Reviewed
  • [Journal Article] In-depth Understanding of π-Electron Systems : New Vistas in Fullerene Endohedrals2010

    • Author(s)
      M.Yamada, et al.
    • Journal Title

      Pure Appl.Chem.

      Volume: 82 Pages: 757-767

    • Peer Reviewed
  • [Journal Article] New Vistas in Fullerene Endohedrals : Functionalization with Compounds from Main Group Elements2010

    • Author(s)
      T.Tsuchiya, et al.
    • Journal Title

      Pure Appl.Chem.

      Volume: 82 Pages: 505-521

    • Peer Reviewed
  • [Journal Article] Chemical Modification of Endohedral Metallofullerene La@C_<82> with 3-Chloro-3-phenyldiazirine2010

    • Author(s)
      M.O.Ishitsuka, et al.
    • Journal Title

      Phosphorus, Sulfur, and Silicon and the Related Elements

      Volume: 185 Pages: 1124-1130

    • Peer Reviewed
  • [Journal Article] Syntheses and crystal structures of [ClPh_2Sn{E(Ph_2SN)_2}] (E=CH,N)2010

    • Author(s)
      T.Fujii, et al.
    • Journal Title

      Phosphorus, Sulfur, and Silicon and the Related Elements

      Volume: 185 Pages: 1046-1053

    • Peer Reviewed
  • [Journal Article] Half-Metallic Sandwich Molecular Wires with Negative Differential Resistance and Sign-Reversible High Spin-filter Efficiency2010

    • Author(s)
      L.Wang, et al.
    • Journal Title

      J.Phys.Chem.C

      Volume: 114 Pages: 21893-21899

    • Peer Reviewed
  • [Journal Article] One-Dimensional Protein-Based Nanoparticles Induce Lipid Bilayer Disruption : Carbon Nanotube Conjugates and Amyloid Fibrils2010

    • Author(s)
      A.Hirano, et al.
    • Journal Title

      Langmuir

      Volume: 26 Pages: 17256-17259

    • Peer Reviewed
  • [Journal Article] Mechanism of Enhanced Dispersion of Single-Walled Carbon Nanotubes with Proteins by Alcohols and Chaotropes2010

    • Author(s)
      A.Hirano, et al.
    • Journal Title

      Jpn.J.Appl.Phys.

      Volume: 49 Pages: 06GJ10(1-3)

    • Peer Reviewed
  • [Presentation] Derivatization of the Insoluble La@C_<3v>(7)-C_<82> : Anomalous Reactivity of Cage Carbons Dictated by the Internal Metal2011

    • Author(s)
      LU, Xing
    • Organizer
      日本化学会第91回春季年会
    • Place of Presentation
      神奈川大学(神奈川県)
    • Year and Date
      2011-03-26
  • [Presentation] Synthesis and Photophysical Properties of Metallofullerenes-Zinc Porphyrin Conjugates : Impact of Endohedral Clusters2011

    • Author(s)
      Lai Feng
    • Organizer
      第40回記念フラーレン・ナノチューブ総合シンポジウム
    • Place of Presentation
      名城大学(愛知県)
    • Year and Date
      2011-03-08
  • [Presentation] Donor-Acceptor conjugates of lanthanum endohedral metallofullerene, La_2@C_<80>, and π-Extended Tetrathiafulvalene2010

    • Author(s)
      Y.Takano, et al
    • Organizer
      PACIFICHEM 2010
    • Place of Presentation
      Honolulu, Hawaii, USA
    • Year and Date
      2010-12-15
  • [Presentation] New Vistas in Fullerene Worlds : Endohedral Metallofullerenes2010

    • Author(s)
      T.Akasaka
    • Organizer
      International Symposium : The Chemistry of Synthetic Carbon Allotropes
    • Place of Presentation
      Erlangen, Germany
    • Year and Date
      2010-11-25
  • [Presentation] 金属内包フラーレンLa_2@C_<80>とπ共役拡張型テトラチアフルバレンを用いたドナー・アクセプター連結型分子の合成と構造解析2010

    • Author(s)
      高野勇太
    • Organizer
      第37回典型元素化学討論会
    • Place of Presentation
      室蘭市民会館(北海道)
    • Year and Date
      2010-11-25
  • [Presentation] Organic Nanomaterials based on Endohedral Metallofullerenes2010

    • Author(s)
      赤阪健
    • Organizer
      H22年度日本化学会関東支部群馬地区地域懇談会
    • Place of Presentation
      日本原子力研究開発機構 高崎量子応用研究所(群馬県)
    • Year and Date
      2010-11-22
  • [Presentation] New Vistas in Endohedral Metallofullerenes2010

    • Author(s)
      T.Akasaka
    • Organizer
      Fullerene Silver Anniversary Symposium-FSAS 2010
    • Place of Presentation
      Heraklion, Greek
    • Year and Date
      2010-10-04
  • [Presentation] フラーレンを鍵物質とする高次Π空間の創発と機能開拓2010

    • Author(s)
      赤阪健
    • Organizer
      第21回基礎有機化学討論会
    • Place of Presentation
      名古屋大学(愛知県)
    • Year and Date
      2010-09-09
  • [Presentation] 異なる2つの置換基を有する金属内包フラーレンの位置選択的合成2010

    • Author(s)
      佐藤悟
    • Organizer
      第21回基礎有機化学討論会
    • Place of Presentation
      名古屋大学(愛知県)
    • Year and Date
      2010-09-09
  • [Presentation] The Role that Internal Metal(s) Play in Endohedral Metallofullerenes as Probed by Exohedral Functionalization2010

    • Author(s)
      Xing Lu
    • Organizer
      第39回フラーレン・ナノチューブ総合シンポジウム
    • Place of Presentation
      京都大学(京都府)
    • Year and Date
      2010-09-05
  • [Presentation] 金属内包フラーレンを鍵物質とした超分子系の構築2010

    • Author(s)
      土屋敬広
    • Organizer
      日本化学会第4回関東支部大会(2010)
    • Place of Presentation
      筑波大学(茨城県)
    • Year and Date
      2010-08-30
  • [Presentation] Organosulfur-based Fullerene Materials2010

    • Author(s)
      T.Nakahodo, et al
    • Organizer
      24th International Conference on the Organic Chemistry of Sulfur (ISOCS-24)
    • Place of Presentation
      Florence, Italy
    • Year and Date
      2010-07-25
  • [Presentation] Creation of Cage-like Carbon π-Electron Molecules with Novel Structures and Properties : New Vistas in Fullerene Endohedrals2010

    • Author(s)
      赤阪健
    • Organizer
      大阪大学産業科学研究所セミナー
    • Place of Presentation
      大阪大学(大阪府)
    • Year and Date
      2010-06-24
  • [Presentation] Bis-carbene adduct of La_2@C_<80>2010

    • Author(s)
      M.O.Ishitusuka, et al
    • Organizer
      217th ECS Meeting
    • Place of Presentation
      Vancouver, Canada
    • Year and Date
      2010-04-25
  • [Book] Chemistry of Nanocarbons, "Recent Progress in Chemistry of Endohedral Metallofullerenes"2010

    • Author(s)
      T. Akasaka, et al
    • Total Pages
      26
    • Publisher
      Wiley-Blackwell, London
  • [Book] Chemistry of Nanocarbons, "Dispersion, Separation of Single-walled Carbon Nanotubes"2010

    • Author(s)
      T. Akasaka, et al
    • Total Pages
      19
    • Publisher
      Wiley-Blackwell, London
  • [Book] Carbon Nanotubes and Related Structures "Carbon Nanostructures : Calculations of Their Energetics, Thermodynamics, and Stability"2010

    • Author(s)
      T. Akasaka, et al
    • Total Pages
      33
    • Publisher
      Wiley-VCH, Verlag GmbH & Co.KGaA, Weinheim
  • [Book] Carbon Nanotubes and Related Structures "Endohedrals"2010

    • Author(s)
      T. Akasaka, et al
    • Total Pages
      36
    • Publisher
      Wiley-VCH, Verlag GmbH & Co.KGaA, Weinheim
  • [Book] Rare Earth Coordination Chemistry-Fundamentals and Applications "Rare Earth Metals Trapped inside Fullerenes-Endohedral Moallofullerenes"2010

    • Author(s)
      T. Akasaka, et al
    • Total Pages
      36
    • Publisher
      John Wiley & Sons, Singapore
  • [Remarks]

    • URL

      http://www.tara.tsukuba.ac.jp/~akasaka-lab/

URL: 

Published: 2012-07-19  

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