自己集積的手法による原子膜複合体の形成

• Project Area: Science of Atomic Layer Systems
• Project/Area Number: 26107532
• Research Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
• Allocation Type: Single-year Grants
• Review Section: Science and Engineering
• Research Institution: Hosei University
• Principal Investigator: 高井 和之 法政大学, 生命科学部, 准教授 (80334514)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000); Fiscal Year 2015: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2014: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
• Keywords: 水分子共存効果 / 分子吸着 / Brodie法 / グラフェン触媒 / 不純物フリー酸化グラフェン / 反強磁性ダイマー / グラフェン / 自己集積化 / 複合原子層 / 電荷移動 / ひずみ

Outline of Annual Research Achievements

原子膜物質に異種化学種を導入する研究を行い，以下の成果を得た．
1)超高真空下で水分圧を厳密に制御し，グラフェンFETへの酸素分子の曝露を行い，電気伝導度のゲート電圧依存性の測定により曝露時間とEfのシフトの相関を調べたところ，酸素吸着時におけるグラフェンのEfの位置と水分子の分圧に依存して酸素からの電荷移動速度が決まることを見出し，グラフェンへの分子吸着によるキャリア注入プロセスが電気化学的メカニズムによって進行することを明らかにした．また，担持基板表面の分子膜修飾とゲート電圧印加により，酸素吸着時のグラフェンフェルミエネルギー大きくシフトさせることにより，別の電気化学反応を誘起して酸素吸着によるグラフェンへの電子ドーピングを実現できることを示した．一方，二硫化モリブデンにおいても酸素への曝露時間の増加に伴う系統的なホールキャリア注入が実現できたが，電極界面の効果など半導体である二硫化モリブデンではグラフェンよりもさらに複雑なメカニズムによって電荷移動が生じていることがわかった．
2)Brodie法により磁性不純物を含まない酸化グラフェンを合成し，酸化グラフェンの本質的な磁性を実験的に観測することができた．また，芳香族アミンのカップリング反応やキサンテン誘導体の水中合成反応において，酸化グラフェンが触媒活性を持ち，これがスピン濃度で示される局在状態密度だけでなく，伝導性を持つπ共役の存在割合にも依存していることを明らかにした．
3)ナノダイヤモンド表面上でのエピタキシャル成長により合成したナノグラフェンに酸素分子を導入することにより，エッジ状態スピンと酸素分子スピンの反強磁性ダイマーが形成することを静磁化率とESRにより見出し，第一原理計算を行うことにより吸着酸素との電荷移動に由来する磁気スイッチング現象が起きていることを解明し，この成果を取りまとめた論文を投稿中である．

Research Progress Status

27年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

27年度が最終年度であるため、記入しない。

Research Products

• [Int'l Joint Research] 国立高磁場研究所(米国)
• [Int'l Joint Research] ヨッフェ物理工学研究所/サンクトペテルブルク情報機械光学研究大(ロシア連邦)
• [Int'l Joint Research] ベングリオン大(イスラエル)
• [Journal Article] Structural analysis of polycrystalline graphene systems by Raman spectroscopy (2015)
  • Author(s): J. Soares, M. Oliveros, C. Garin, M. David, L. Martins, C. Almeida, E. Ferreira, K. Takai, T. Enoki, R. Paniago, A Malachias, A. Jorio, B. Archanjo, C. Achete, and L. Cancado
  • Journal Title: Carbon Volume: 95 Pages: 646-652
  • DOI: 10.1016/j.carbon.2015.08.020
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Magnetic studies of detonation nanodiamond with surface modified with gadolinium ions (2015)
  • Author(s): V.Yu Osipov, A. E. Aleksenskiy, K. Takai, and A. Ya. Vul'
  • Journal Title: Physics of the Solid State Volume: 57 Issue: 11 Pages: 2314-2319
  • DOI: 10.1134/s1063783415110268
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Diamagnetism of carbon onions probed by NMR of adsorbed water" A. M. Panich, V. Yu. Osipov and K. Takai (2014)
  • Author(s): A. M. Panich, V. Yu. Osipov and K. Takai
  • Journal Title: New Carbon Mater. Volume: 29 Issue: 5 Pages: 392-392
  • DOI: 10.1016/s1872-5805(14)60145-1
  • Peer Reviewed
• [Journal Article] Preferential oxidation-induced etching of zigzag edges in nanographene (2014)
  • Author(s): J. Takashiro, Y. Kudo, S. J. Hao, K. Takai, D. N. Futaba, T. Enoki, M. Kiguchi
  • Journal Title: Phys. Chem. Chem. Phys. Volume: 16 Issue: 39 Pages: 21363-21363
  • DOI: 10.1039/c4cp02678k
  • Peer Reviewed
• [Journal Article] A quantitative analysis of carbon edge sites and an estimation of graphene sheet size in high-temperature treated, non-porous carbons (2014)
  • Author(s): Takafumi Ishii, Susumu Kashihara, Yasuto Hoshikawa, Jun-ichi Ozaki, Naokatsu Kannari, Kazuyuki Takai, Toshiaki Enoki, Takashi Kyotani
  • Journal Title: Carbon Volume: 80 Pages: 135-145
  • DOI: 10.1016/j.carbon.2014.08.048
  • Peer Reviewed
• [Journal Article] Heat treatment effect on the electronic and magnetic structures of nanographene sheets investigated through electron spectroscopy and conductance measurements (2014)
  • Author(s): J. Takashiro, Y. Kudo, S. Kaneko, K. Takai, T. Ishii, T. Kyotani, T. Enoki, M. Kiguchi
  • Journal Title: Physical Chemistry Chemical Physics Volume: (印刷中) Issue: 16 Pages: 7280-7280
  • DOI: 10.1039/c4cp00023d
  • Peer Reviewed
• [Presentation] Host-Guest Interactions in Graphene (2016)
  • Author(s): Kazuyuki Takai
  • Organizer: 3rd International Graphene Forum
  • Place of Presentation: Tsinghua University, Shenzhen, China
  • Year and Date: 2016-04-14
  • Int'l Joint Research / Invited
• [Presentation] グラフェン／電解質溶液の界面における電気化学相互作用 (2016)
  • Author(s): 鈴木 大輔，高井 和之
  • Organizer: 第63回応用物理学会春季学術講演会
  • Place of Presentation: 東京工業大学, 大岡山, 東京
  • Year and Date: 2016-03-19
• [Presentation] Fluorination and annealing effects on magnetism and structure of nanodiamond (2016)
  • Author(s): Kenta Kogane, Hidekazu Touhara, Yoshiyuki Hattori, V. Yu. Osipov, N. Romanov and Kazuyuki Takai
  • Organizer: The 50th Fullerenes-Nanotubes-Graphene General Symposium
  • Place of Presentation: University of Tokyo, Bunkyo, Tokyo
  • Year and Date: 2016-02-20
• [Presentation] Evaluation of spin magnetism and chemical activity for graphene derivativescule (2016)
  • Author(s): Tomoki Yamashina, Takuya Isaka, Kentaro Tajima, Yoshiaki Matsuo, Kazuyuki Takai
  • Organizer: The 50th Fullerenes-Nanotubes-Graphene General Symposium
  • Place of Presentation: University of Tokyo, Bunkyo, Tokyo
  • Year and Date: 2016-02-20
• [Presentation] Host-Guest interactions between nanographene host and magnetic guest molecule (2016)
  • Author(s): Akira Suzuki, Kazuyuki Takai
  • Organizer: The 50th Fullerenes-Nanotubes-Graphene General Symposium
  • Place of Presentation: University of Tokyo, Bunkyo, Tokyo
  • Year and Date: 2016-02-20
• [Presentation] Electrochemical Interaction at the Interface between Graphene and Electrolyte (2016)
  • Author(s): Daisuke Suzuki, Kazuyuki Takai
  • Organizer: The 50th Fullerenes-Nanotubes-Graphene General Symposium
  • Place of Presentation: University of Tokyo, Bunkyo, Tokyo
  • Year and Date: 2016-02-20
• [Presentation] Evaluation of Graphene Oxide Catalyst regarding Organic reaction in Aqueous media (2016)
  • Author(s): Takuya Isaka, Tomoki Yamashina, Kentaro Tajima, Yutaka Ohta, Kazuyuki Takai
  • Organizer: The 50th Fullerenes-Nanotubes-Graphene General Symposium
  • Place of Presentation: University of Tokyo, Bunkyo, Tokyo
  • Year and Date: 2016-02-20
• [Presentation] Host-Guest interactions between nanographene host and magnetic guest molecule (2016)
  • Author(s): A. Suzuki, K. Takai
  • Organizer: 理研シンポジウム：ミュオン科学応用の最先端 理研RALミュオン施設25周年記念 Users Meeting
  • Place of Presentation: 理化学研究所, 和光, 埼玉
  • Year and Date: 2016-02-16
  • Int'l Joint Research
• [Presentation] Molecular-based proximity effects in graphene (2015)
  • Author(s): K. Takai, T. Umehra, K. Nakamoto, A. Izumiyama
  • Organizer: The International Chemical Congress of PACIFIC BASIN SOCIETIES 2015
  • Place of Presentation: Hawaii Convention Center, Hnolulu, USA
  • Year and Date: 2015-12-15
  • Int'l Joint Research
• [Presentation] Tuning molecular adsorption kinetics in graphene by gate-bias voltage (2015)
  • Author(s): T. Umehara , K. Takai
  • Organizer: The International Chemical Congress of PACIFIC BASIN SOCIETIES 2015
  • Place of Presentation: Hawaii Convention Center, Hnolulu, USA
  • Year and Date: 2015-12-15
  • Int'l Joint Research
• [Presentation] Bromine adsorption effects on epritaxial graphene (2015)
  • Author(s): K. Nakamoto , K. Takai, T. Akatsu
  • Organizer: The International Chemical Congress of PACIFIC BASIN SOCIETIES 2015
  • Place of Presentation: Hawaii Convention Center, Hnolulu, USA
  • Year and Date: 2015-12-15
  • Int'l Joint Research
• [Presentation] Correlation between spin magnetism and chemical activity in graphene oxide / nanographene (2015)
  • Author(s): T. Yamashina, T. Isaka, K. Inoue, Y. Matsuo, K. Takai
  • Organizer: The International Chemical Congress of PACIFIC BASIN SOCIETIES 2015
  • Place of Presentation: Hawaii Convention Center, Hnolulu, USA
  • Year and Date: 2015-12-15
  • Int'l Joint Research
• [Presentation] Fluorination of Nanodiamond / Nanographene-Shell Structure (2015)
  • Author(s): Kenta Kogane, Hidekazu Touhara, Yoshiyuki Hattori, V. Yu. Osipov, N. Romanov and Kazuyuki Takai
  • Organizer: The International Chemical Congress of PACIFIC BASIN SOCIETIES 2015
  • Place of Presentation: Hawaii Convention Center, Hnolulu, USA
  • Year and Date: 2015-12-15
  • Int'l Joint Research
• [Presentation] グラフェンの近接効果における基板表面構造の影響 (2015)
  • Author(s): 泉山 彰里，高井和之
  • Organizer: 第 34 回法政大学イオンビーム工学研究所シンポジウム
  • Place of Presentation: 法政大学, 小金井, 東京
  • Year and Date: 2015-12-09
• [Presentation] グラフェンにおけるゲスト分子吸着速度のゲート電圧依存性 (2015)
  • Author(s): 梅原太一，高井和之
  • Organizer: 第 34 回法政大学イオンビーム工学研究所シンポジウム
  • Place of Presentation: 法政大学, 小金井, 東京
  • Year and Date: 2015-12-09
• [Presentation] グラフェン／電解質溶液の界面における電気化学相互作用の解明 (2015)
  • Author(s): 鈴木大輔，高井和之
  • Organizer: 第 34 回法政大学イオンビーム工学研究所シンポジウム
  • Place of Presentation: 法政大学, 小金井, 東京
  • Year and Date: 2015-12-09
• [Presentation] SiO2基板への Au イオン照射によるグラフェンへの影響 (2015)
  • Author(s): 岩渕倖己，西村 智朗，高井和之
  • Organizer: 第 34 回法政大学イオンビーム工学研究所シンポジウム
  • Place of Presentation: 法政大学, 小金井, 東京
  • Year and Date: 2015-12-09
• [Presentation] Boron Doped Diamonds Produced at High Pressure with Metal Catalyst (2015)
  • Author(s): F. M. Shakhov, K. Takai, S.V. Kidalov, V. T. Lebedev, D. V. Shamshur, A. A. Krasilin, E. Lahderanta A.Ya. Vul'
  • Organizer: 第 34 回法政大学イオンビーム工学研究所シンポジウム
  • Place of Presentation: 法政大学, 小金井, 東京
  • Year and Date: 2015-12-09
• [Presentation] High resolution TEM and infrared absorption studies of commercial polycrystalline nanodiamonds with twinning boundaries (2015)
  • Author(s): N. M. Romanov, V. Yu. Osipov, J.-P. Boudou, T. Hayashi, K. Takai
  • Organizer: 12th International Conference Advanced Carbon NanoStructures
  • Place of Presentation: St Petersburg Academic University, St. Petersburg, Russia
  • Year and Date: 2015-06-29
  • Int'l Joint Research
• [Presentation] Gate-bias modulation of charge-transfer rate in hydrazine-adsorbed graphene (2015)
  • Author(s): T. Umehara , K. Takai
  • Organizer: The Sixteenth International conference on the Science and Application of Nanotubs (NT15)
  • Place of Presentation: Nagoya University, Nagoya, Japan
  • Year and Date: 2015-06-29
  • Int'l Joint Research
• [Presentation] Magnetic interactions between nanographene host and guest molecules with localized d electron (2015)
  • Author(s): A.Suzuki , K. Takai
  • Organizer: The Sixteenth International conference on the Science and Application of Nanotubs (NT15)
  • Place of Presentation: Nagoya University, Nagoya, Japan
  • Year and Date: 2015-06-29
  • Int'l Joint Research
• [Presentation] Influence of the surface structure of substrate for proximity effect on Graphene (2015)
  • Author(s): A.Izumiyama , K. Takai
  • Organizer: The Sixteenth International conference on the Science and Application of Nanotubs (NT15)
  • Place of Presentation: Nagoya University, Nagoya, Japan
  • Year and Date: 2015-06-29
  • Int'l Joint Research
• [Presentation] Correlation between spin magnetism and catalytic activity in graphene oxide / nanographene (2015)
  • Author(s): Tomoki Yamashina, Takuya Isaka, Kadumi Inoue, Yoshiaki Matsuo, Kazuyuki Takai
  • Organizer: The Sixteenth International conference on the Science and Application of Nanotubs (NT15)
  • Place of Presentation: Nagoya University, Nagoya, Japan
  • Year and Date: 2015-06-29
  • Int'l Joint Research
• [Presentation] A theoretical proof for electrically enhanced desorption of hydrogen chemisorbed on graphene (2015)
  • Author(s): Koichi Kusakabe, Gagus Ketut Sunnardianto, Naoki Morishita, Isao Maruyama, Kazuyuki Takai, Toshiaki Enoki
  • Organizer: The Sixteenth International conference on the Science and Application of Nanotubs (NT15)
  • Place of Presentation: Nagoya University, Nagoya, Japan
  • Year and Date: 2015-06-29
  • Int'l Joint Research
• [Presentation] Temperature dependence of momentum distribution in a correlated Dirac sea with the zero mode of a hydrogenated graphene vacancy (2015)
  • Author(s): Naoki Morishita, Gagus Ketut Sunnardianto, Koichi, Kusakabe, Isao Maruyama, Kazuyuki Takai, Toshiaki Enoki
  • Organizer: The Sixteenth International conference on the Science and Application of Nanotubs (NT15)
  • Place of Presentation: Nagoya University, Nagoya, Japan
  • Year and Date: 2015-06-29
  • Int'l Joint Research
• [Presentation] Fermi energy dependence of charge transfer kinetics in molecular adsorption on gra (2015)
  • Author(s): T. Umehara , K. Takai
  • Organizer: NT15 Satellite Symposia GSS15
  • Place of Presentation: Nagoya University, Nagoya, Japan
  • Year and Date: 2015-06-28
  • Int'l Joint Research
• [Presentation] Strong exchange scatterings of low-energy quasi-particles at the Dirac point by the zero mode of graphene (2015)
  • Author(s): Naoki Morishita, Gagus Ketut Sunnardianto, Koichi, Kusakabe, Isao Maruyama, Kazuyuki Takai, Toshiaki Enoki
  • Organizer: NT15 Satellite Symposia GSS15
  • Place of Presentation: Nagoya University, Nagoya, Japan
  • Year and Date: 2015-06-28
  • Int'l Joint Research
• [Presentation] Boron Doped Diamonds Produced at High Pressure with Metal Catalyst (2015)
  • Author(s): F.M. Shakhov, K. Takai, S.V. Kidalov, V.T. Lebedev, D.V. Shamshur, A.A. Krasilin, E. Lahderanta and A.Ya. Vul’
  • Organizer: 9th International conference on New Diamond and Nanocarbon (NDNC2015)
  • Place of Presentation: Shizuoka GRANSHIP, Shizuoka, Japan
  • Year and Date: 2015-05-24
  • Int'l Joint Research
• [Presentation] Host-Guest interactions on epitaxial graphene (2015)
  • Author(s): K. Nakamoto , T. Akatsu , K. Takai
  • Organizer: 9th International conference on New Diamond and Nanocarbon (NDNC2015)
  • Place of Presentation: Shizuoka GRANSHIP, Shizuoka, Japan
  • Year and Date: 2015-05-24
  • Int'l Joint Research
• [Presentation] Effect of hydrazine adsorption for electron transport properties on graphene (2015)
  • Author(s): T. Umehara , K. Takai
  • Organizer: 9th International conference on New Diamond and Nanocarbon (NDNC2015)
  • Place of Presentation: Shizuoka GRANSHIP, Shizuoka, Japan
  • Year and Date: 2015-05-24
  • Int'l Joint Research
• [Presentation] Effect of Thermal Annealing and Fluorination on the Structure and Magnetic properties of Nanodiamond (2015)
  • Author(s): Kenta Kogane, Hidekazu Touhara, Yoshiyuki Hattori, V. Yu. Osipov, N. Romanov and Kazuyuki Takai
  • Organizer: 9th International conference on New Diamond and Nanocarbon (NDNC2015)
  • Place of Presentation: Shizuoka GRANSHIP, Shizuoka, Japan
  • Year and Date: 2015-05-24
  • Int'l Joint Research
• [Presentation] Influence of the surface structure of substrate for proximity effect on Graphene (2015)
  • Author(s): K. Takai, A. Izumiyama
  • Organizer: 9th International conference on New Diamond and Nanocarbon (NDNC2015)
  • Place of Presentation: Shizuoka GRANSHIP, Shizuoka, Japan
  • Year and Date: 2015-05-24
  • Int'l Joint Research
• [Presentation] Elucidation of the Interlayer structure of water-introduced graphene oxide (2015)
  • Author(s): T. Isaka, T. Yamashina, K. Takai
  • Organizer: 9th International conference on New Diamond and Nanocarbon (NDNC2015)
  • Place of Presentation: Shizuoka GRANSHIP, Shizuoka, Japan
  • Year and Date: 2015-05-24
  • Int'l Joint Research
• [Presentation] Correlation between spin magnetism and chemical activity in graphene oxide / nanographene (2015)
  • Author(s): T. Yamashina, T. Isaka, K. Inoue, Y. Matsuo, K. Takai
  • Organizer: 9th International conference on New Diamond and Nanocarbon (NDNC2015)
  • Place of Presentation: Shizuoka GRANSHIP, Shizuoka, Japan
  • Year and Date: 2015-05-24
  • Int'l Joint Research
• [Presentation] ヒドラジン吸着によるグラフェンの電子輸送特性の変調 (2015)
  • Author(s): 梅原 太一，髙井 和之
  • Organizer: 日本物理学会
  • Place of Presentation: 早稲田大学（東京，新宿）
  • Year and Date: 2015-03-21 – 2015-03-24
• [Presentation] Structure and electronic properties of nanodiamond and its fluorination effect (2015)
  • Author(s): Kazuyuki Takai, Kenta Kogane, Hidekazu Touhara, Yoshiyuki Hattori
  • Organizer: APS March meeting
  • Place of Presentation: San Antonio(USA)
  • Year and Date: 2015-03-02 – 2015-03-06
• [Presentation] Influence of the surface structure of substrate for proximity effect on Graphene (2015)
  • Author(s): Akinori Izumiyama, Kazuyuki Takai
  • Organizer: The 48th Fullerenes-Nanotubes-Graphene General Symposium
  • Place of Presentation: University of Tokyo(Tokyo, Bunkyo)
  • Year and Date: 2015-02-21 – 2015-02-23
• [Presentation] Structure and electronic properties of nanodiamond and its fluorination effect (2015)
  • Author(s): Kenta Kogane, Hidekazu Touhara, Yoshiyuki Hattori, Kazuyuki Takai
  • Organizer: The 48th Fullerenes-Nanotubes-Graphene General Symposium
  • Place of Presentation: University of Tokyo(Tokyo, Bunkyo)
  • Year and Date: 2015-02-21 – 2015-02-23
• [Presentation] Structure and electronic properties of epitaxial graphene and its molecular adsorption effect (2015)
  • Author(s): Keisuke Nakamoto, Takashi Akatsu, Kazuyuki Takai
  • Organizer: The 48th Fullerenes-Nanotubes-Graphene General Symposium
  • Place of Presentation: University of Tokyo(Tokyo, Bunkyo)
  • Year and Date: 2015-02-21 – 2015-02-23
• [Presentation] Evaluation of magnetism of chemically active sites in graphene oxide / nanographene (2015)
  • Author(s): Tomoki Yamashina, Takuya Isaka, Kadumi Inoue, Yoshiaki Matsuo, Kazuyuki Takai
  • Organizer: The 48th Fullerenes-Nanotubes-Graphene General Symposium
  • Place of Presentation: University of Tokyo(Tokyo, Bunkyo)
  • Year and Date: 2015-02-21 – 2015-02-23
• [Presentation] Effect of hydrazine adsorption on Graphene FET characteristic (2015)
  • Author(s): Taichi Umehara, Kazuyuki Takai
  • Organizer: The 48th Fullerenes-Nanotubes-Graphene General Symposium
  • Place of Presentation: University of Tokyo(Tokyo, Bunkyo)
  • Year and Date: 2015-02-21 – 2015-02-23
• [Presentation] ナノダイヤモンドの電子物性と構造及びそのフッ素化効果 (2014)
  • Author(s): 黄金健太，服部義之，東原秀和，高井和之
  • Organizer: 炭素材料学会
  • Place of Presentation: 大野城まどかぴあ（福岡，大野城）
  • Year and Date: 2014-12-08 – 2014-12-10
• [Presentation] 酸化グラフェン/ナノグラフェンにおける化学活性点の磁性による評価 (2014)
  • Author(s): 山科智貴，井坂琢也，井上和美，松尾吉晃，高井和之
  • Organizer: 炭素材料学会
  • Place of Presentation: 大野城まどかぴあ（福岡，大野城）
  • Year and Date: 2014-12-08 – 2014-12-10
• [Presentation] 走査プローブ顕微鏡測定の基礎とグラファイト・グラフェンへの応用 (2014)
  • Author(s): 高井 和之
  • Organizer: 炭素材料学会 炭素材料セミナー
  • Place of Presentation: 日本教育会館（東京，千代田）
  • Year and Date: 2014-10-17
  • Invited
• [Remarks] 高井研究室
  • URL: http://takailab.ws.hosei.ac.jp/