酸化グラフェンを基軸としたグラフェンハイブリッドの多重機能発現

• Project Area: Science of Atomic Layer Systems
• Project/Area Number: 26107529
• 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: Kumamoto University
• Principal Investigator: 速水 真也 熊本大学, 自然科学研究科, 教授 (30321912)
• Project Period (FY): 2014-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥7,150,000 (Direct Cost: ¥5,500,000、Indirect Cost: ¥1,650,000); Fiscal Year 2015: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000); Fiscal Year 2014: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
• Keywords: 酸化グラフェン

Outline of Annual Research Achievements

GOはグラファイトを酸化して合成するため、グラフェン表面に酸素原子や水酸基あるいはカルボキシル基が付加して負に帯電しており、様々なカチオン性の物質と複合体を形成する。またカチオン性の機能性有機化合物やとのハイブリッド化では、磁性体や伝導体などとの複合化が可能である。これらのGOハイブリッドは、GO水溶液にハイブリッド化させる物質の水溶液やアルコール溶液を加えるだけでハイブリッドを形成することができ、容易にナノシートとして分散させることができる。GOハイブリッドにおいて、プロトン伝導性の向上と付加的な多機能性、例えば磁性や伝導性あるいは誘電性などの機能性を発現する。そこでGO-金属イオンやGO-金属錯体のハイブリッドを静電的な相互作用により容易にハイブリッドを合成し、これらのGOにおけるプロトン伝導や発光特性と金属イオンや金属錯体におけると磁性、伝導性、誘電性、発光特性などをハイブリッドさせることにより多重機能性を協奏的に発現させることに成功した。またここで得られたGOハイブリッドをヒドラジンを用いた化学的還元、紫外線照射による光還元および電気化学的還元することにより、rGOハイブリッドを得ることができる。例えばGO-Co2+とのハイブリッドでは、還元後rGO-CoOのハイブリッドが形成され伝導性と磁性を併せ持つ非常に稀な物性を発現する。rGOは伝導性や強磁性を示すため、金属イオンや金属錯体との協奏的多重機能性を発現させることに成功した。

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

• [Journal Article] Coexistence of Electrical Conductivity and Ferromagnetism in a Hybrid Material Formed from Reduced Graphene Oxide and Manganese Oxide (2015)
  • Author(s): Y. Murashima, R. Ohtani, T. Matsui, H. Takehira, R. Yokota, M. Nakamura, L. F. Lindoy, S. Hayami
  • Journal Title: Dalton Trans. Volume: 44 Issue: 11 Pages: 5049-5052
  • DOI: 10.1039/c5dt00299k
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Recent progress in applications of graphene oxide for gas analysis: a review (2015)
  • Author(s): K. Toda, R. Furue, S. Hayami
  • Journal Title: Analytica Chimica Acta Volume: - Pages: 43-53
  • DOI: 10.1016/j.aca.2015.02.002
  • Peer Reviewed / Open Access
• [Journal Article] Super proton/electron mixed conduction in graphene oxide hybrids by intercalating sulfate ions (2015)
  • Author(s): K. Hatakeyama, Md. S. Islam, M. Koinuma C. Ogata, T. Taniguchi, A. Funatsu, T. Kida, S. Hayami, Y. Matsumoto
  • Journal Title: J. Mater. Chem. A, 3, 20892-20895 (2015) Volume: 3 Issue: 42 Pages: 20892-20895
  • DOI: 10.1039/c5ta05653e
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Coal Oxide as a Thermally Robust Carbon-Based Proton Conductor (2015)
  • Author(s): Hatakeyama, K.; Ogata, C.; Koinuma, M.; Taniguchi, T.; Hayami, S.; Kuroiwa, K.; Matsumoto, Y.
  • Journal Title: ACS Appl. Mater. Int. Volume: 7 Issue: 41 Pages: 23041-23046
  • DOI: 10.1021/acsami.5b06470
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Impaired Proton Conductivity of Metal Doped Graphene Oxide (2014)
  • Author(s): Y. Ikeda, M. R. Karim, H. Takehira, T. Matsui, K. Hatakeyama, Y. Murashima, T. Taniguchi, M. Koinuma, M. Nakamura, Y. Matsumoto, S. Hayami
  • Journal Title: Bull. Chem. Soc. Jp. Volume: 87 Pages: 639-641
  • NAID: 130004153295
  • Peer Reviewed
• [Journal Article] In situ oxygenous functionalization of a graphite electrode for enhanced affinity towards charged species and a reduced graphene oxide mediator (2014)
  • Author(s): M. R. Karim, Y. Ikeda, T. Ide, S. Sugimoto, K. Toda, Y. Kitamura, T. Ihara, T. Matsui, T. Taniguchi, M. Koinuma, Y. Matsumoto, S. Hayami
  • Journal Title: New J. Chem. Volume: 38 Pages: 2120-2127
  • Peer Reviewed
• [Journal Article] Hydrogen generation by graphene oxide-alkylamine hybrids through photocatalytic water splitting (2014)
  • Author(s): Y. Ikeda, M. R. Karim, H. Takehira, K. Hatakeyama, T. Matsui, T. Taniguchi, M. Koinuma, Y. Matsumoto, S. Hayami
  • Journal Title: Chem. Lett. Volume: 43 Pages: 486-488
  • NAID: 130004868052
  • Peer Reviewed
• [Journal Article] Programmable Spin-State Switching in a Mixed-Valence Spin-Crossover Iron Grid (2014)
  • Author(s): T. Matsumoto, G. N. Newton, T. Shiga, S. Hayami, Y. Matsui, H. Okamoto, R. Kumai, Y. Murakami H. Oshio
  • Journal Title: Nature Commun. Volume: 5 Pages: 3865-3865
  • NAID: 120007130268
  • Peer Reviewed
• [Journal Article] Proton Conductivities of Graphene Oxide Nanosheets: Single, Multilayer, and Modified Nanosheets (2014)
  • Author(s): K. Hatakeyama, M. R. Karim, C. Ogata, H. Tateishi, A. Funatsu, T. Taniguchi, M. Koinuma, S. Hayami, Y. Matsumoto
  • Journal Title: Angew. Chem., Int. Ed. Volume: 53 Pages: 6997-7000
  • Peer Reviewed
• [Journal Article] Structures and Magnetic Properties of Iron(III) Complexes with Long Alkyl Chains (2014)
  • Author(s): M. Nakaya, K. Shimayama, K. Takami, K. Hirata, S. A. Amolegbe, M. Nakamura, L. F. Lindoy, S. Hayami
  • Journal Title: Crystals Volume: 4 Pages: 104-112
  • Peer Reviewed
• [Journal Article] Spin-crossover and LIESST Effect for Iron(III) Complex Based on π-π Stacking by Coordination Programming (2014)
  • Author(s): M. Nakaya, K. Shimayama, K. Takami, K. Hirata, S. A. Amolegbe, M. Nakamura, L. F. Lindoy, S. Hayami
  • Journal Title: Chem. Lett. Volume: 43 Pages: 1058-1060
  • NAID: 130004868259
  • Peer Reviewed
• [Journal Article] Tunable Graphene Oxide Proton/Electron Mixed Conductor that Functions at Room Temperature (2014)
  • Author(s): K. Hatakeyama, H. Tateishi, T. Taniguchi, M. Koinuma, T. Kida, S. Hayami, H. Yokoi, Y. Matsumoto
  • Journal Title: Chem. Mater. Volume: 26 Pages: 5598-5604
  • Peer Reviewed
• [Journal Article] Graphene and Graphene Oxide as Super Materials (2014)
  • Author(s): M. R. Karim, H. Takehira, T. Matsui, Y. Murashima, R. Ohtani, M. Nakamura, S. Hayami
  • Journal Title: Current. Inorg. Chem. Volume: 4 Pages: 191-219
  • Peer Reviewed
• [Journal Article] Optimization of proton conductivity in graphene oxide by filling sulfate ions (2014)
  • Author(s): K. Hatakeyama, M. R. Karim, C. Ogata, H.Tateishi, T. Taniguchi, M. Koinuma, S. Hayami, Y. Matsumoto
  • Journal Title: Chemical Communications Volume: 50 Pages: 14527-14530
  • Peer Reviewed
• [Presentation] Graphene Oxide and Reduced Graphene Oxide Hybrids (2015)
  • Author(s): Ｓｈｉｎｙａ Ｈａｙａｍｉ
  • Organizer: ＰａｃｉｆｉｃＣｈｅｍ2015
  • Place of Presentation: Ｈａｗａｉｉ
  • Year and Date: 2015-12-15
• [Presentation] スーパーマテリアルとしての酸化グラフェン (2015)
  • Author(s): 速水真也
  • Organizer: ＭＲＳ－Ｊ
  • Place of Presentation: 横浜
  • Year and Date: 2015-12-07
• [Presentation] Graphene Oxide and Reduced Graphene Oxide Hybrids (2015)
  • Author(s): Ｓｈｉｎｙａ Ｈａｙａｍｉ
  • Organizer: 錯体化学討論会（英語セッション）
  • Place of Presentation: 奈良
  • Year and Date: 2015-09-20
  • Int'l Joint Research / Invited
• [Presentation] Graphene Oxide and Reduced Graphene Oxide Hybrids (2015)
  • Author(s): Ｓｈｉｎｙａ Ｈａｙａｍｉ
  • Organizer: ＩＳＮＳＣ
  • Place of Presentation: Ｂｕｓａｎ
  • Year and Date: 2015-08-14
  • Int'l Joint Research / Invited
• [Presentation] Graphene Oxide and Reduced Graphene Oxide Hybrids with Spin Crossover Iron(III) Complexes (2015)
  • Author(s): Ｓｈｉｎｙａ Ｈａｙａｍｉ
  • Organizer: ＡＣＣＣ
  • Place of Presentation: Ｈｏｎｇ Ｋｏｎｇ
  • Year and Date: 2015-07-13
  • Int'l Joint Research
• [Presentation] Graphene oxide hybrids (2015)
  • Author(s): S. Hayami
  • Organizer: ２D15
  • Place of Presentation: Adelaide, Australia
  • Year and Date: 2015-03-10 – 2015-03-11
  • Invited
• [Presentation] 酸化グラフェンハイブリッド (2014)
  • Author(s): 速水真也
  • Organizer: 酸化グラフェン研究会
  • Place of Presentation: 東京、田町CIC
  • Year and Date: 2014-12-18
  • Invited
• [Presentation] Graphene oxide hybrids (2014)
  • Author(s): S. Hayami
  • Organizer: NMS-X
  • Place of Presentation: Zhengzhou, China
  • Year and Date: 2014-10-12 – 2014-10-17
  • Invited
• [Presentation] Graphene oxide hybrids (2014)
  • Author(s): S. Hayami
  • Organizer: ISNSC
  • Place of Presentation: Bali, Indonesia
  • Year and Date: 2014-08-10 – 2014-08-15
  • Invited
• [Presentation] Graphene oxide hybrids (2014)
  • Author(s): S. Hayami
  • Organizer: ICCC
  • Place of Presentation: Singapore
  • Year and Date: 2014-07-20 – 2014-07-25
• [Remarks] 研究概要
  • URL: http://www.sci.kumamoto-u.ac.jp/~hayami/index.html