Function creation and device development based on polar field of nanosheet hybrid

• Project/Area Number: 17H01200
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Functional solid state chemistry
• Research Institution: Kumamoto University
• Principal Investigator: 速水 真也 熊本大学, 大学院先端科学研究部(理), 教授 (30321912)
• Project Period (FY): 2017-04-01 – 2022-03-31
• Project Status: Granted (Fiscal Year 2021)
• Budget Amount: ¥43,940,000 (Direct Cost: ¥33,800,000、Indirect Cost: ¥10,140,000); Fiscal Year 2021: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000); Fiscal Year 2020: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000); Fiscal Year 2019: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000); Fiscal Year 2018: ¥13,650,000 (Direct Cost: ¥10,500,000、Indirect Cost: ¥3,150,000); Fiscal Year 2017: ¥15,080,000 (Direct Cost: ¥11,600,000、Indirect Cost: ¥3,480,000)
• Keywords: 酸化グラフェン / ２D材料 / ハイブリッド / ナノシート / 磁性 / 伝導性 / 誘電性 / 極性場 / バイオマス / 触媒反応 / 多機能性 / 極性物性 / プロトン伝導 / 電子伝導 / 機能創製 / デバイス開発

Outline of Annual Research Achievements

本研究では、酸化グラフェン（GO）やその還元体（rGO）、金属酸化物（MO）、金属水酸化物（MOH）あるいは金属（M）ナノシートといった二次元材料を基盤とし、異種物質とのハイブリッド化により形成する“極性場”に着目した機能発現を目指した。基盤となるナノシート上に、異なるナノシートあるいは種々のナノ粒子や分子などの異種物質を化学的にハイブリッド化することで、界面に特異なダイポール（極性）が発現する。これを“極性場”と定義し、極性場に基づく機能開発を行うことで、ナノシートの特徴を最大限に活かしつつ、ハイブリッド極性場における単一ナノシートでは実現不可能な機能発現を目指した。
これまでに酸化グラフェン（GO）とその還元体である（rGO）ナノシートにおける機能探索およびハイブリッド化による多機能化を目指すことを目的とした。GOナノシートは高いプロトン伝導性を示すことを世界に先駆けて見出すことに成功し、固体電解質としての可能性を示唆することができた。またGOを種々に還元したrGOは、p型半導体あるいはn型半導体の制御に成功し、オールカーボンでのpn接合に成功した。またrGOの光触媒による水の分解なども観測することに成功した。さらにGOの酸素官能基に着目し、GOハイブリッドおよびrGOハイブリッドの合成および多機能性発現（磁性と伝導性、プロトン伝導と電子伝導性、電極触媒）に成功した。さらにGOおよびrGOさらにはそれらのハイブリッドを用いた、燃料電池、スーパーキャパシタのデバイス開発まで行うことができた。
さらにGOに種々の元素を導入し、ダイヤモンドに相転移させることで、磁性、誘電性さらには超伝導の発現にも成功した。

Current Status of Research Progress

1: Research has progressed more than it was originally planned.

Reason

本研究では、酸化グラフェン（GO）、金属酸化物（MO）、金属水酸化物（MOH）あるいはそれらの還元体である酸化グラフェン還元体（rGO）および金属（M）ナノシート、さらにそれらナノシートを組み合わせたハイブリッドやナノシートと種々のナノ粒子や分子などのハイブリッドにおける極性場に基づいたデバイス・触媒の機能創発を行ってきたが、それらの機能性開拓には成功してきた。
例えば、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た。またrGO-フタロシアニンのハイブリッドでは、ORRの触媒能を見出した。またp型n型rGOハイブリッドではダイオード特性の発現にも成功した。さらにGO-金属錯体ナノ粒子におけるハイブリッドにおいて、GOを用いたナノコンプレッサーの開発に成功し、GO/TiO2ハイブリッドにおいては非常に大きな比誘電率の観測に成功した。GO/NiOハイブリッドではバイオマスの触媒反応においてセルロースからグルコースさらにHMF (5-(hydroxymethyl) furfural)までを高収率、高選択性で得ることに成功した。
ごく最近、それらのGOハイブリッドを相転移させ、さらにさまざまな物性発現（磁性、誘電性、超伝導）に成功し、当初の計画以上に進展していると考えている。

Strategy for Future Research Activity

現在、科学技術におけるイノベーション創出をもたらす原子の自在配列や次元制御などは世界中で注目されている中で、イノベーションをもたらす材料として極めて大きな可能性を有している有用なナノ炭素材料として、GOナノシートに着目している。GOナノシートに高効率で高濃度窒素ドープできることを見出し、ドープダイヤモンドの原料とすることで、従来まで難しかった窒素や酸素などの原子をドープしたダイヤモンドを合成し、プレリミナリーな結果でも示したように高温超伝導体や強磁性体を得ることができる。
上述した手法を用いれば、高濃度に窒素や酸素ドープされたダイヤモンドの合成が可能となる。理論的には窒素や酸素ドープダイヤモンドが高温超伝導体になることが予測されており、本研究では、高濃度に窒素や酸素ドープされたダイヤモンドの高温超伝導の発現を期待する。本研究提案において、GOナノシートのドープによる高温超伝導など機能性ダイヤモンドの研究開発は、社会に大きなインパクトを与え、研究目標に掲げた研究成果で大きなブレークスルーを起こすと考えられる。

Research Products

• [Int'l Joint Research] シドニー大学/シドニー西大学(オーストラリア)
• [Int'l Joint Research] キョンポク大学(韓国)
• [Int'l Joint Research] University of Sydney/The University of Queensland(オーストラリア)
• [Int'l Joint Research] Shahjalal University(バングラデシュ)
• [Int'l Joint Research] Federal University of Agriculture/University of Ilorin(ナイジェリア)
• [Int'l Joint Research] Shahjalal University(Bangladesh)
• [Int'l Joint Research] Kyungpook National University(韓国)
• [Int'l Joint Research] The University of Sydney/The University of Queensland(Australia)
• [Int'l Joint Research] Dalian University of Technology(China)
• [Journal Article] Ferromagnetically Coupled Hydroxo-bridged Heptanuclear Ni(II) Wheel Cluster with <i>S</i> = 7 Ground Spin State (2020)
  • Author(s): Kusumoto Sotaro、Kim Yang、Nakamura Masaaki、Lindoy Leonard F.、Hayami Shinya
  • Journal Title: Chem. Lett. Volume: 49 Issue: 1 Pages: 24-27
  • DOI: 10.1246/cl.190765
  • NAID: 130007782536
  • ISSN: 0366-7022, 1348-0715
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Branched Alkylamine?Reduced Graphene Oxide Hybrids as a Dual Proton?Electron Conductor and Organic-Only Water-Splitting Photocatalyst (2020)
  • Author(s): Karim Mohammad Razaul、Rahman Mohammed M.、Asiri Abdullah M.、Hayami Shinya
  • Journal Title: ACS Applied Materials & Interfaces Volume: 12 Pages: 10829-10838
  • DOI: 10.1021/acsami.9b21200
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Ion conduction switching between H+ and OH－ induced by pH in graphene oxide† (2020)
  • Author(s): Masahiro Fukuda, Md. Saidul Islam, Yuta Shudo, Junya Yagyu, Leonard F. Lindoy, Shinya Hayami
  • Journal Title: Chemical Communications Volume: 31 Pages: 4364-4367
  • DOI: 10.1039/d0cc00769b
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Microwave-assisted catalytic conversion of glucose to 5-hydroxymethylfurfural using “three dimensional” graphene oxide hybrid catalysts (2020)
  • Author(s): Hirano Yui、Beltramini Jorge N.、Mori Atsushi、Nakamura Manami、Karim Mohammad Razaul、Kim Yang、Nakamura Masaaki、Hayami Shinya
  • Journal Title: RSC Advances Volume: 10 Pages: 11727-11736
  • DOI: 10.1039/d0ra01009j
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] CO2‐Induced Spin‐State Switching at Room Temperature in a Monomeric Cobalt(II) Complex with the Porous Nature (2020)
  • Author(s): Nakaya Manabu、Kosaka Wataru、Miyasaka Hitoshi、Komatsumaru Yuki、Kawaguchi Shogo、Sugimoto Kunihisa、Zhang Yingjie、Nakamura Masaaki、Lindoy Leonard F.、Hayami Shinya
  • Journal Title: Angewandte Chemie Volume: 132 Pages: 10745-10752
  • DOI: 10.1002/ange.202003811
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Pulsed Plasma Assisted Cl-Doped Graphene Nano Dots with Semiconducting Property (2020)
  • Author(s): Fukuda Masahiro、Islam Md. Saidul、Mashimo Tsutomu、Hayami Shinya
  • Journal Title: Chem. Lett. Volume: 49 Issue: 6 Pages: 648-651
  • DOI: 10.1246/cl.200108
  • NAID: 130007852065
  • ISSN: 0366-7022, 1348-0715
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Double-layered honeycomb architectures constructed via hierarchical self-assembly of hexagonal spin crossover cobalt(ii) metallacycles (2020)
  • Author(s): Akiyoshi Ryohei、Kuroiwa Keita、Sakuragi Mina、Yoshimoto Soichiro、Ohtani Ryo、Nakamura Masaaki、Lindoy Leonard F.、Hayami Shinya
  • Journal Title: Chemical Communications Volume: 56 Pages: 5835-5838
  • DOI: 10.1039/d0cc02628j
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Solvent‐Dependent Bending Ability of Salen‐Derived Organic Crystals (2020)
  • Author(s): Kusumoto Sotaro、Saso Akira、Ohmagari Hitomi、Hasegawa Miki、Kim Yang、Nakamura Masaaki、Lindoy Leonard F.、Hayami Shinya
  • Journal Title: ChemPlusChem Volume: 85 Pages: 1692-1696
  • DOI: 10.1002/cplu.202000362
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Orbital Angular Momentum Crossover in 1-D High Spin Cobalt(II) Complex (2020)
  • Author(s): Zenno Hikaru、Akiyoshi Ryohei、Nakamura Masaaki、Morgan Grace G.、Hayami Shinya
  • Journal Title: Chem. Lett. Volume: 49 Issue: 9 Pages: 1099-1102
  • DOI: 10.1246/cl.200395
  • NAID: 130007897060
  • ISSN: 0366-7022, 1348-0715
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Solvent vapor-induced polarity and ferroelectricity switching (2020)
  • Author(s): Kobayashi Fumiya、Akiyoshi Ryohei、Kosumi Daisuke、Nakamura Masaaki、Lindoy Leonard F.、Hayami Shinya
  • Journal Title: Chemical Communications Volume: 56 Pages: 10509-10512
  • DOI: 10.1039/d0cc04497k
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Water Molecule-Induced Reversible Magnetic Switching in a Bis-Terpyridine Cobalt(II) Complex Exhibiting Coexistence of Spin Crossover and Orbital Transition Behaviors (2020)
  • Author(s): Kobayashi Fumiya、Komatsumaru Yuki、Akiyoshi Ryohei、Nakamura Masaaki、Zhang Yingjie、Lindoy Leonard F.、Hayami Shinya
  • Journal Title: Inorganic Chemistry Volume: 59 Pages: 16843-16852
  • DOI: 10.1021/acs.inorgchem.0c00818
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Guest Modulated Spin States of Metal Complex Assemblies (2020)
  • Author(s): Nakaya Manabu、Ohtani Ryo、Hayami Shinya
  • Journal Title: European Journal of Inorganic Chemistry Volume: 2020 Pages: 3709-3719
  • DOI: 10.1002/ejic.202000553
  • Peer Reviewed
• [Journal Article] Homo- and Heterosolvent Modifications of Hofmann-Type Flexible Two-Dimensional Layers for Colossal Interlayer Thermal Expansions (2020)
  • Author(s): Ohtani Ryo、Yanagisawa Junichi、Matsunari Hiromu、Ohba Masaaki、Lindoy Leonard F.、Hayami Shinya
  • Journal Title: Inorg. Chem. Volume: 58 Pages: 12739-12747
  • DOI: 10.1021/acs.inorgchem.9b01660
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Effects of a strong gravitational field on Mn-trimeres and magnetic properties of hexagonal YMnO3 single crystal. (2019)
  • Author(s): Tokuda, M., Nishiyama, T., Yoshiasa, A.ほか4名
  • Journal Title: Journal of Physics and Chemistry of Solids Volume: 129 Pages: 172-179
  • DOI: 10.1016/j.jpcs.2018.12.023
  • Peer Reviewed
• [Journal Article] Consecutive oxidative additions of iodine on undulating 2D coordination polymers: Formation of I-Pt-I chains and inhomogeneous layers (2019)
  • Author(s): Ryo Ohtani, Riho Yamamoto, Hiroyoshi Ohtsu, Masaki Kawano, Jenny Pirillo, Yuh Hijikata, Masaaki Sadakiyo, Leonard F. Lindoye, and Shinya Hayami
  • Journal Title: Dalton Transactions Volume: 印刷中 Pages: 7198-7202
  • DOI: 10.1039/c8dt04624g
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Synthesis, structure and magnetic properties of manganese(II) and cobalt(II) coordination polymers with bis(4-pyridyl)benzylamine (2019)
  • Author(s): Kim Su Young、Jeong Ah Rim、Komatsumaru Yuki、Hayami Shinya、Min Kil Sik
  • Journal Title: Journal of Inclusion Phenomena and Macrocyclic Chemistry Volume: 94 Pages: 167-174
  • DOI: 10.1007/s10847-019-00890-1
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Interaction of 2-furanylmethyl- and 2-thienylmethyl-amide derivatives of 1,3-di(carboxymethyl)calix[4]arene with metal salts (2019)
  • Author(s): Noamane Mohamed Habib、Ben Othmen Amel、Al-Ayed Abdullah Sulaiman、Kim Yang、Hayami Shinya、Hamdi Abdelwaheb
  • Journal Title: Journal of Inclusion Phenomena and Macrocyclic Chemistry Volume: 94 Pages: 249-256
  • DOI: 10.1007/s10847-019-00908-8
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Phosphorescence at Low Temperature by External Heavy‐Atom Effect in Zinc(II) Clusters (2019)
  • Author(s): Kobayashi Fumiya、Ohtani Ryo、Teraoka Saki、Yoshida Masaki、Kato Masako、Zhang Yingjie、Lindoy Leonard F.、Hayami Shinya、Nakamura Masaaki
  • Journal Title: Chemistry ? A European Journal Volume: 25 Pages: 5875-5879
  • DOI: 10.1002/chem.201900343
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Weak ferromagnetism derived from spin canting in an amido-bridged homochiral Mn(iii) 1-D coordination polymer (2019)
  • Author(s): Kusumoto Sotaro、Koga Atsushi、Kobayashi Fumiya、Ohtani Ryo、Kim Yang、Lindoy Leonard F.、Hayami Shinya、Nakamura Masaaki
  • Journal Title: Dalton Transactions Volume: 48 Pages: 8617-8622
  • DOI: 10.1039/c9dt00593e
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] A procession on photocatalyst for solar fuel production and waste treatment (2019)
  • Author(s): Rabin Nurun Nahar、Ohmagari Hitomi、Islam Md. Saidul、Karim Mohammad Razaul、Hayami Shinya
  • Journal Title: Journal of Inclusion Phenomena and Macrocyclic Chemistry Volume: 印刷中 Pages: 263-281
  • DOI: 10.1007/s10847-019-00889-8
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Water‐Induced Breaking of the Coulombic Ordering in a?Room‐Temperature Ionic Liquid Metal Complex (2019)
  • Author(s): Hiraoka Tomoaki、Ohtani Ryo、Nakamura Masaaki、Lindoy Leonard F.、Hayami Shinya
  • Journal Title: Chemistry A European Journal Volume: 25 Pages: 7521-7525
  • DOI: 10.1002/chem.201900069
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Slow Magnetic Relaxation Triggered by a Structural Phase Transition in Long-Chain-Alkylated Cobalt(II) Single-Ion Magnets (2019)
  • Author(s): Kobayashi Fumiya、Ohtani Ryo、Nakamura Masaaki、Lindoy Leonard F.、Hayami Shinya
  • Journal Title: Inorganic Chemistry Volume: 58 Pages: 7409-7415
  • DOI: 10.1021/acs.inorgchem.9b00543
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Ferroelectric metallomesogens composed of achiral spin crossover molecules (2019)
  • Author(s): Akiyoshi Ryohei、Hirota Yuma、Kosumi Daisuke、Tsutsumi Mayu、Nakamura Masaaki、Lindoy Leonard F.、Hayami Shinya
  • Journal Title: Chemical Science Volume: 10 Pages: 5843-5848
  • DOI: 10.1039/c9sc01229j
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Pressure Effects with Incorporated Particle Size Dependency in Graphene Oxide Layers through Observing Spin Crossover Temperature (2019)
  • Author(s): Kitayama Hikaru、Akiyoshi Ryohei、Nakamura Masaaki、Hayami Shinya
  • Journal Title: Magnetochemistry Volume: 5 Pages: 26-26
  • DOI: 10.3390/magnetochemistry5020026
  • Peer Reviewed
• [Journal Article] A mixed-spin spin-crossover thiozolylimine [Fe4L6]8+ cage (2019)
  • Author(s): Li Li、Craze Alexander R.、Mustonen Outi、Zenno Hikaru、Whittaker Jacob J.、Hayami Shinya、Lindoy Leonard F.、Marjo Christopher E.、Clegg Jack K.、Aldrich-Wright Janice R.、Li Feng
  • Journal Title: Dalton Transactions Volume: 48 Pages: 9935-9938
  • DOI: 10.1039/c9dt01947b
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Air-Stable n-Type Single-Walled Carbon Nanotubes Doped with Benzimidazole Derivatives for Thermoelectric Conversion and Their Air-Stable Mechanism (2019)
  • Author(s): Nakashima Yuki、Yamaguchi Ryohei、Toshimitsu Fumiyuki、Matsumoto Masamichi、Borah Angana、Staykov Aleksandar、Islam Md. Saidul、Hayami Shinya、Fujigaya Tsuyohiko
  • Journal Title: ACS Applied Nano Materials Volume: 2 Pages: 4703-4710
  • DOI: 10.1021/acsanm.9b01174
  • Peer Reviewed
• [Journal Article] Observation of Proton Transfer Coupled Spin Transition and Trapping of Photoinduced Metastable Proton Transfer State in an Fe(II) Complex (2019)
  • Author(s): Nakanishi Takumi、Hori Yuta、Sato Hiroyasu、Wu Shu-Qi、Okazawa Atsushi、Kojima Norimichi、Yamamoto Takashi、Einaga Yasuaki、Hayami Shinya、Horie Yusuke、Okajima Hajime、Sakamoto Akira、Shiota Yoshihito、Yoshizawa Kazunari、Sato Osamu
  • Journal Title: J Am Chem Soc. Volume: 141 Pages: 14384-14393
  • DOI: 10.1021/jacs.9b07204
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Application of spin-crossover water soluble nanoparticles for use as MRI contrast agents (2019)
  • Author(s): Tsukiashi Asami、Min Kil Sik、Kitayama Hikaru、Terasawa Hiroaki、Yoshinaga Sosuke、Takeda Mitsuhiro、Lindoy Leonard F.、Hayami Shinya
  • Journal Title: Scientific Reports Volume: 8 Pages: 14911-14911
  • DOI: 10.1038/s41598-018-33362-6
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Hybrids from the π-π Stacking of Graphene Oxide and Aromatic Sulfonic Compounds for Improved Proton Conductivity (2018)
  • Author(s): Shudo Yuta、Karim Mohammad Razaul、Ohtani Ryo、Nakamura Masaaki、Hayami Shinya
  • Journal Title: ChemElectroChem Volume: 5 Pages: 238-241
  • DOI: 10.1002/celc.201701026
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] The Effect of Layer Distance and Oxygen Content for Tuning Ion Permeation through Graphene Oxide Membrane (2018)
  • Author(s): Kazuto Hatakeyama、Kyosuke Hirose、Keisuke Awaya、Michio Koinuma、Narumi Kameda、Tetsuya Kida、Shinya Hayami、Yasumichi Matsumoto
  • Journal Title: Chem. Lett. Volume: 47 Issue: 3 Pages: 292-295
  • DOI: 10.1246/cl.171070
  • NAID: 130006434026
  • ISSN: 0366-7022, 1348-0715
  • Peer Reviewed
• [Journal Article] Proton Relaxation Time in Water-soluble Metal Complex Nanoparticles (2018)
  • Author(s): Tsukiashi Asami、Min Kil Sik、Terasawa Hiroaki、Yoshinaga Sosuke、Takeda Mitsuhiro、Ohtani Ryo、Nakamura Masaaki、Lindoy Leonard F.、Hayami Shinya
  • Journal Title: Chem. Lett. Volume: 47 Issue: 4 Pages: 598-600
  • DOI: 10.1246/cl.180038
  • NAID: 130006638867
  • ISSN: 0366-7022, 1348-0715
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Intermolecular Interaction Tuning of Spin-Crossover Iron(III) Complexes with Aromatic Counteranions (2018)
  • Author(s): Tsukiashi Asami、Nakaya Manabu、Kobayashi Fumiya、Ohtani Ryo、Nakamura Masaaki、Harrowfield Jack M.、Kim Yang、Hayami Shinya
  • Journal Title: Inorganic Chemistry Volume: 57 Pages: 2834-2842
  • DOI: 10.1021/acs.inorgchem.7b03126
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Mesoporous silica nanocarriers encapsulated antimalarials with high therapeutic performance (2018)
  • Author(s): Amolegbe Saliu Alao、Hirano Yui、Adebayo Joseph Oluwatope、Ademowo Olusegun George、Balogun Elizabeth Abidemi、Obaleye Joshua Ayoola、Krettli Antoniana Ursine、Yu Chengzhong、Hayami Shinya
  • Journal Title: Scientific Reports Volume: 8 Pages: 3078-3078
  • DOI: 10.1038/s41598-018-21351-8
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Super Dielectric Materials of Two-Dimensional TiO2 or Ca2Nb3O10 Nanosheet Hybrids with Reduced Graphene Oxide (2018)
  • Author(s): Rabin Nurun Nahar、Ida Shintaro、Karim Mohammad Razaul、Islam Md. Saidul、Ohtani Ryo、Nakamura Masaaki、Koinuma Michio、Lindoy Leonard F.、Hayami Shinya
  • Journal Title: ACS Omega Volume: 3 Pages: 2074-2083
  • DOI: 10.1021/acsomega.7b01764
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Ferroelectric and luminescence properties of zinc(ii) and platinum(ii) soft complexes (2018)
  • Author(s): Akiyoshi Ryohei、Hirota Yuma、Kosumi Daisuke、Ohtani Ryo、Nakamura Masaaki、Lindoy Leonard F.、Hayami Shinya
  • Journal Title: Dalton Transaction Volume: 47 Pages: 14288-14292
  • DOI: 10.1039/c8dt01100a
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Ca2-αLaαNb3-βXβO10 Nanosheet Photocatalyst for Hydrogen Generation from Water Splitting (2018)
  • Author(s): Ohmagari Hitomi、Karim Mohammad Razaul、Shudo Yuta、Ida Shintaro、Ohtani Ryo、Hayami Shinya
  • Journal Title: MRS Advances Volume: 3 Pages: 2847-2854
  • DOI: 10.1557/adv.2018.461
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Creating capsules with cubanes (2018)
  • Author(s): Kusumoto Sotaro、Kobayashi Fumiya、Ohtani Ryo、Zhang Yingjie、Harrowfield Jack、Kim Yang、Hayami Shinya、Nakamura Masaaki
  • Journal Title: Dalton Transactions Volume: 47 Pages: 9575-9578
  • DOI: 10.1039/c8dt01911h
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Post-synthetic Modification of a Dinuclear Spin Crossover Iron(III) Complex (2018)
  • Author(s): Komatsumaru Yuki、Nakaya Manabu、Kobayashi Fumiya、Ohtani Ryo、Nakamura Masaaki、Lindoy Leonard F.、Hayami Shinya
  • Journal Title: Zeitschrift fur anorganische und allgemeine Chemie Volume: 644 Pages: 729-734
  • DOI: 10.1002/zaac.201800087
  • Peer Reviewed
• [Journal Article] Abrupt spin transition in a modified-terpyridine cobalt(ii) complex with a highly-distorted [CoN6] core (2018)
  • Author(s): Nakaya Manabu、Ohtani Ryo、Shin Jong Won、Nakamura Masaaki、Lindoy Leonard F.、Hayami Shinya
  • Journal Title: Dalton Transactions Volume: 47 Pages: 13809-13814
  • DOI: 10.1039/c8dt02367k
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Positive and Negative Two-Dimensional Thermal Expansion via Relaxation of Node Distortions (2018)
  • Author(s): Ohtani Ryo、Yamamoto Riho、Aoyama Takuya、Grosjean Arnaud、Nakamura Masaaki、Clegg Jack K.、Hayami Shinya
  • Journal Title: Inorganic Chemistry Volume: 57 Pages: 11588-11596
  • DOI: 10.1021/acs.inorgchem.8b01617
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Wheel-type heterometallic ferromagnetic clusters: [Ni7?xMx(HL)6(μ3-OMe)4(μ3-OH)2]Cl2 (M = Zn, Co, Mn; x = 1, 3) (2018)
  • Author(s): Kobayashi Fumiya、Ohtani Ryo、Kusumoto Sotaro、Lindoy Leonard F.、Hayami Shinya、Nakamura Masaaki
  • Journal Title: Dalton Transactions Volume: 47 Pages: 16422-16428
  • DOI: 10.1039/c8dt03275k
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Modulating the Work Function of Graphene by Pulsed Plasma Aided Controlled Chlorination (2018)
  • Author(s): Takehira Hiroshi、Karim Mohammad Razaul、Shudo Yuta、Fukuda Masahiro、Mashimo Tsutomu、Hayami Shinya
  • Journal Title: Scientific Reports Volume: 8 Pages: 17392-17392
  • DOI: 10.1038/s41598-018-35668-x
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Superionic conductivity in hybrid of 3-hydroxypropanesulfonic acid and graphene oxide (2017)
  • Author(s): K. Wakata, M. R. Karim, M. S. Islam, R. Ohtani, M. Nakamura, M. Koinuma, S. Hayami
  • Journal Title: Chemistry - An Asian Journal Volume: 12 Pages: 194-197
  • DOI: 10.1002/asia.201601488
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Guest-dependent spin-transition behavior of porous coordination polymers (2017)
  • Author(s): R. Ohtani, S. Hayami
  • Journal Title: Chemistry - A European Journal Volume: 23 Pages: 2236-2248
  • DOI: 10.1002/chem.201601880
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Arsine gas sensor based on gold-modified reduced graphene oxide (2017)
  • Author(s): Ryo Furue, Edwin P. Koveke, Shotaro Sugimoto, Yuta Shudo, Shinya Hayami, Shin-Ichi Ohira, Kei Toda
  • Journal Title: Sensors and Actuators B: Chemical Volume: 240 Pages: 657-663
  • DOI: 10.1016/j.snb.2016.08.131
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Dinuclear Iron(III) and Nickel(II) Complexes Containing N-(2-Pyridylmethyl)-N′-(2-hydroxyethyl)ethylenediamine: Catalytic Oxidation and Magnetic Properties (2017)
  • Author(s): Jeong Ah Rim、Shin Jong Won、Jeong Jong Hwa、Bok Kwon Hee、Kim Cheal、Jeong Donghyun、Cho Jaeheung、Hayami Shinya、Min Kil Sik
  • Journal Title: Chemistry - A European Journal Volume: 23 Pages: 3023-3033
  • DOI: 10.1002/chem.201604498
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Modulation of redox potentials utilizing the flexible coordination sphere of a penta-coordinate complex in the solid states (2017)
  • Author(s): R. Ohtani, Y. Kitamura, Y. Hijikata, M. Nakamura, L. F. Lindoy, S. Hayami
  • Journal Title: Dalton Transactions Volume: 46 Pages: 3749-3754
  • DOI: 10.1039/c7dt00233e
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Molecular Assemblies of Metal Complexes via Base Pairing of Nucleic Acids in the Crystalline State (2017)
  • Author(s): Manabu Nakaya, Ryo Ohtani, Kunihisa Sugimoto, Masaaki Nakamura, Leonard F. Lindoy, Shinya Hayami
  • Journal Title: Chemistry - A European Journal Volume: - Pages: 7232-7237
  • DOI: 10.1002/chem.201700593
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Proton conductors produced by chemical modifications of carbon allotropes, perovskites and metal organic frameworks (2017)
  • Author(s): Mohammad Razaul Karim, Kazuto Hatakeyama, Michio Koinuma, Shinya Hayami
  • Journal Title: Journal of Materials Chemistry A Volume: 5 Pages: 7243-7256
  • DOI: 10.1039/c6ta10923c
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Crystal Structures and Spin-Crossover Behavior of Iron(II) Complexes with Chiral and Racemic Ligands (2017)
  • Author(s): Y. Sekimoto, M. R. Karim, N. Saigo, R. Ohtani, M. Nakamura, S. Hayami
  • Journal Title: European Journal of Inorganic Chemistry Volume: - Pages: 1049-1053
  • DOI: 10.1002/ejic.201601232
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] pH-Dependent structural diversity of a 2-pyridinemethanol Cu complex and its relatively strong magnetic exchange coupling via hydrogen bonding (2017)
  • Author(s): Hamaguchi Tomohiko、Nagata Tomoko、Hayami Shinya、Kawata Satoshi、Ando Isao
  • Journal Title: Dalton Transactions Volume: 46 Pages: 6196-6201
  • DOI: 10.1039/c7dt00718c
  • Peer Reviewed
• [Journal Article] Supramolecular architectures self-assembled using long chain alkylated spin crossover cobalt(II) compounds (2017)
  • Author(s): Akiyoshi, R.; Kuroiwa, K.; Amolegbe, S. A.; Nakaya, M.; Ohtani, R.; Nakamura, M.; Lindoy, L. F.; Hayami, S.
  • Journal Title: Chemical Communications Volume: in press Pages: 4685-4687
  • DOI: 10.1039/c7cc01501a
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Role of hydrophilic groups in acid intercalated graphene oxide as a superionic conductor (2017)
  • Author(s): Wakata Kosuke、Islam Md. Saidul、Karim Mohammad Razaul、Hatakeyama Kazuto、Rabin Nurun Nahar、Ohtani Ryo、Nakamura Masaaki、Koinuma Michio、Hayami Shinya
  • Journal Title: RSC Advances Volume: 7 Pages: 21901-21905
  • DOI: 10.1039/c7ra01634d
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Anion-dependent interpenetration in lattices of Ag(I) complexes of a divergent quaterpyridine-donor ligand (2017)
  • Author(s): Shin Jong Won、Lee Young Hoon、Harrowfield Jack、Hayami Shinya、Kim Yang
  • Journal Title: Polyhedron Volume: 130 Pages: 94-99
  • DOI: 10.1016/j.poly.2017.04.002
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Zero in-plane thermal expansion in guest-tunable 2D coordination polymers (2017)
  • Author(s): R. Ohtani, A. Grosjean, R. Ishikawa, R. Yamamoto, M. Nakamura, J. K. Clegg, S. Hayami
  • Journal Title: Inorganic Chemistry Volume: 56 Pages: 6225-6233
  • DOI: 10.1021/acs.inorgchem.7b00282
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Interlayer Void Space as the Key Semipermeable Site for Sieving Molecules and Leaking Ions in Graphene Oxide Filter (2017)
  • Author(s): Karim Mohammad Razaul、Islam Md. Saidul、Rabin Nurun Nahar、Takehira Hiroshi、Wakata Kosuke、Nakamura Masaaki、Ohtani Ryo、Toda Kei、Hayami Shinya
  • Journal Title: ChemistrySelect Volume: 2 Pages: 4248-4254
  • DOI: 10.1002/slct.201700503
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Syntheses, Structures and Magnetic Properties of Tetranuclear Cubane-type and Heptanuclear Wheel-type Nickel(II) Complexes with 3-Methoxysalicylic Acid Derivatives (2017)
  • Author(s): F. Kobayashi, R. Ohtani, S. Teraoka, W. Kosaka, H. Miyasaka, Y. Zhang, L. F. Lindoy, S. Hayami, M. Nakamura
  • Journal Title: Dalton Transactions Volume: 46 Pages: 8555-8561
  • DOI: 10.1039/c7dt01757j
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Development of an All Solid State Battery Incorporating Graphene Oxide as Proton Conductor (2017)
  • Author(s): Shudo Yuta、Islam Md. Saidul、Karim Mohammad Razaul、Rabin Nurun Nahar、Wakata Kosuke、Ohtani Ryo、Nakamura Masaaki、Lindoy Leonard F.、Hayami Shinya
  • Journal Title: Global Challenges Volume: 1 Pages: 1700054-1700054
  • DOI: 10.1002/gch2.201700054
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] New mechanistic insights into intramolecular aromatic ligand hydroxylation and benzyl alcohol oxidation initiated by the well-defined (μ-peroxo)diiron(iii) complex (2017)
  • Author(s): Sekino Mio、Furutachi Hideki、Tojo Rina、Hishi Ayumi、Kajikawa Hanako、Suzuki Takatoshi、Suzuki Kaito、Fujinami Shuhei、Akine Shigehisa、Sakata Yoko、Ohta Takehiro、Hayami Shinya、Suzuki Masatatsu
  • Journal Title: Chemical Communications Volume: 53 Pages: 8838-8841
  • DOI: 10.1039/c7cc04382a
  • Peer Reviewed
• [Journal Article] Photoreduction Dependent p- and n-Type Semiconducting Field-Effect Transistor Properties in Undoped Reduced Graphene Oxide (2017)
  • Author(s): Takehira Hiroshi、Islam Md. Saidul、Karim Mohammad Razaul、Shudo Yuta、Ohtani Ryo、Lindoy Leonard F.、Taniguchi Takaaki、Osada Minoru、Hayami Shinya
  • Journal Title: ChemistrySelect Volume: 2 Pages: 6941-6944
  • DOI: 10.1002/slct.201701509
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Tuneable pressure effects in graphene oxide layers (2017)
  • Author(s): Y. Sekimoto, R. Ohtani, M. Nakamura, L. F. Lindoy, S. Hayami
  • Journal Title: Scientific Reports Volume: 7 Pages: 12159-12159
  • DOI: 10.1038/s41598-017-12444-x
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] A Material Showing Colossal Positive and Negative Volumetric Thermal Expansion with Hysteretic Magnetic Transition (2017)
  • Author(s): Hu Ji-Xiang、Xu Yang、Meng Yin-Shan、Zhao Liang、Hayami Shinya、Sato Osamu、Liu Tao
  • Journal Title: Angewandte Chemie International Edition Volume: 56 Pages: 13052-13055
  • DOI: 10.1002/anie.201707258
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Ferromagnetic dinuclear nickel(II) complexes bridged by azide ions (2017)
  • Author(s): Jeong Ah Rim、Choi Jihye、Komatsumaru Yuki、Hayami Shinya、Min Kil Sik
  • Journal Title: Inorganic Chemistry Communications Volume: 86 Pages: 66-69
  • DOI: 10.1016/j.inoche.2017.09.023
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Oxidation route dependent proton conductivities of oxidized fullerenes (2017)
  • Author(s): Rabin Nurun Nahar、Karim Mohammad Razaul、Islam Md. Saidul、Omagari Hitomi、Kameda Narumi、Shudo Yuta、Ohtani Ryo、Nakamura Masaaki、Hayami Shinya
  • Journal Title: New Journal of Chemistry Volume: 41 Pages: 14708-14712
  • DOI: 10.1039/c7nj02964k
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] The impact of metal complex lipids on viscosity and curvature of hybrid liposomes (2017)
  • Author(s): R. Ohtani, T. Tokita, T. Takaya, K. Iwata, M. Kinoshita, N. Matsumori, M. Nakamura, L. F. Lindoy, S. Hayami
  • Journal Title: Chemical Communications Volume: 53 Pages: 13249-13252
  • DOI: 10.1039/c7cc07944c
  • Peer Reviewed / Int'l Joint Research
• [Presentation] Ferroelectricity in spin crossover iron(II) metallomesogens (2020)
  • Author(s): S. Hayami
  • Organizer: Bordeaux Olivier Kahn Discussions BOOK-D
  • Int'l Joint Research / Invited
• [Presentation] Graphene Oxide as a Super Material (2020)
  • Author(s): 速水真也
  • Organizer: 第59回FNTG総合シンポジウム
  • Invited
• [Presentation] Graphene Oxide and Reduced Graphene Oxide Hybrids (2020)
  • Author(s): Shinya Hayami
  • Organizer: 第100回日本化学会春季年会
  • Invited
• [Presentation] Graphene Oxide as a Super Material (2020)
  • Author(s): Shinya Hayami
  • Organizer: Symposium on Materials Chemistry for Sustainable Energy
  • Invited
• [Presentation] 酸化グラフェンの多機能性と応用 (2019)
  • Author(s): 速水真也
  • Organizer: グラフェン酸化グラフェン合同シンポジウム
• [Presentation] Graphene Oxide and Reduced Graphene Oxide Hybrids (2019)
  • Author(s): Shinya Hayami
  • Organizer: ACCC2019
• [Presentation] Advanced molecular functional baseed on inetermolecular interaction (2019)
  • Author(s): Shinya Hayami
  • Organizer: 錯体化学会第69回討論会
• [Presentation] Graphene Oxide and Reduced Graphene Oxide Hybrids (2018)
  • Author(s): Shinya Hayami
  • Organizer: MRS
  • Int'l Joint Research / Invited
• [Presentation] Graphene Oxide and Reduced Graphene Oxide Hybrids (2018)
  • Author(s): Shinya Hayami
  • Organizer: International Forum on Graphene
  • Int'l Joint Research / Invited
• [Presentation] Graphene Oxide Hybrids and its Applications (2018)
  • Author(s): Shinya Hayami
  • Organizer: ICSM
  • Int'l Joint Research / Invited
• [Presentation] Graphene Oxide and Reduced Graphene Oxide Hybrids (2018)
  • Author(s): Shinya Hayami
  • Organizer: ISNSC
  • Int'l Joint Research / Invited
• [Presentation] Graphene Oxide and Reduced Graphene Oxide Hybrids (2018)
  • Author(s): Shinya Hayami
  • Organizer: ICCC
  • Int'l Joint Research / Invited
• [Presentation] Graphene Oxide and Reduced Graphene Oxide Hybrids (2018)
  • Author(s): Shinya Hayami
  • Organizer: CMCEE
  • Int'l Joint Research / Invited
• [Presentation] Tuneable Pressure Effects in Graphene Oxide Layers (2018)
  • Author(s): Shinya Hayami
  • Organizer: ICMM
  • Int'l Joint Research
• [Presentation] Multi-Functional Metal Complex Based on Intermolecular Interaction (2018)
  • Author(s): Shinya Hayami
  • Organizer: M3E
  • Int'l Joint Research / Invited
• [Presentation] Graphene Oxide and Reduced Graphene Oxide Hybrids (2018)
  • Author(s): Shinya Hayami
  • Organizer: IUPAC NMS-XIV
  • Int'l Joint Research / Invited
• [Presentation] Graphene oxide hybrids with SCO complexes (2017)
  • Author(s): Shinya Hayami
  • Organizer: ACCC
  • Int'l Joint Research / Invited
• [Presentation] Tunable Pressure Effects in Graphene Oxide Layers (2017)
  • Author(s): Shinya Hayami
  • Organizer: ISNSC
  • Int'l Joint Research / Invited
• [Presentation] Tunable Pressure Effects in Graphene Oxide Layers (2017)
  • Author(s): Shinya Hayami
  • Organizer: US-JP Joint symposium
  • Int'l Joint Research / Invited
• [Presentation] Tunable Pressure Effects in Graphene Oxide Layers (2017)
  • Author(s): Shinya Hayami
  • Organizer: UK-JP Joint Symposium
  • Int'l Joint Research / Invited
• [Presentation] Tunable Pressure Effects in Graphene Oxide Layers (2017)
  • Author(s): Shinya Hayami
  • Organizer: CN-JP Joint Symposium
  • Int'l Joint Research / Invited
• [Presentation] Tunable Pressure Effects in Graphene Oxide Layers (2017)
  • Author(s): Shinya Hayami
  • Organizer: RPGR
  • Invited
• [Presentation] Tunable Pressure Effects in Graphene Oxide Layers (2017)
  • Author(s): 速水真也
  • Organizer: GO研究会
  • Int'l Joint Research / Invited
• [Presentation] Tunable Pressure Effects in Graphene Oxide Layers (2017)
  • Author(s): Shinya Hayami
  • Organizer: EMN
  • Int'l Joint Research / Invited
• [Book] グラフェンから広がる二次元物質の新技術と応用 (2020)
  • Author(s): 福田将大, 速水真也
  • Publisher: エヌ・ティー・エス
  • ISBN: 9784860436636
• [Book] Inorganic Nanosheets and Nanosheet-Based Materials (2017)
  • Author(s): K. Hatakeyama, S. Hayami, Y. Matsumoto
  • Total Pages: 542
  • Publisher: Springer
  • ISBN: 9784431564942
• [Remarks] 速水研究室
  • URL: http://www.sci.kumamoto-u.ac.jp/~hayami/index.html
• [Remarks] Recent research
  • URL: http://www.sci.kumamoto-u.ac.jp/~hayami/recent%20research.html