Research Units

Development of Nano and Supramolecular Materials

2D materials are ideal for constructing flexible electrochemical energy storage devices due to their great advantages of flexibility, thinness, and transparency. We have also focused on 2D materials, i.e. metal oxide (MO), metal hydroxide (MOH), metal (M), graphene oxide (GO) and reduced graphene oxide (rGO) nano sheets. We have aimed at development energy devices and catalysis by using 2D and its hybrid materials.

Development of Nano and Supramolecular Materials

Unit members

  • Japan
    Unit coordinator
    Shinya HAYAMI
    Professor, Faculty of Advanced Science and Technology, Kumamoto University
  • Japan
    Shintaro IDA
    Professor, Institute of Industrial Nanomaterials, Kumamoto University
  • Australia
    Associate Professor-Senior Research Fellow, Nanomaterials Centre (NANOMAC); Australian Institute for Bioengineering and Nanotechnology (AIBN), The University of Queensland
  • Korea
    Yang KIM Website
    Professor, Kosin University
  • Italy
    Martino DI SERIO Website
    Professor, University of Naples Federico II/ IROAST Visiting Professor
  • Japan
    Michio KOINUMA
    Associate Professor, Institute of Industrial Nanomaterials, Kumamoto University


  1. Recrystallization solvent dependent elastic/plastic flexibility of an n-dodecyl-substituted tetrachlorophtalimide, S. Kusumoto, R. Suzuki, M. Tachibana, Y. Sekine, Y. Kim, S. Hayami, Chem. Commun., in press. DOI: 10.1039/D2CC00663D

  2. Energy Conversion and Storage in Fuel Cells and Super-Capacitors from Chemical Modifications of Carbon Allotropes: State-of-Art and Prospect, Md. S. Islam, Y. Shudo, S. Hayami, Bull. Chem. Soc. Jpn., 95(1), 1-25 (2022). DOI: 10.1246/bcsj.20210297

  3. High Proton Conductivity of 3D Graphene Oxide Intercalated with Aromatic Sulfonic Acids, M. A. Rahman, Md.S. Islam, M.Fukuda, J. Yagyu, Z. Feng, Y. Sekine, L. F. Lindoy, J. Ohyama, S. Hayami, ChemPlusChem, in press. DOI: 10.1002/cplu.202200003

  4. Microwave-assisted catalytic conversion of chitin to 5-hydroxymethylfurfural using polyoxometalate as catalyst, Md. S. Islam, M. Nakamura, N. N. Rabin, M. A. Rahman, M. Fukuda, Y. Sekine, J. N. Beltramini, Y. Kim, S. Hayami, RSC Adv., 12(1), 406-412 (2022). DOI: 10.1039/D1RA08560C

  5. High water adsorption features of graphene oxide: Potential of graphene oxide-based desert plantation, Md.S. Islam, J. Yagyu, Y. Sekine, S. Sawa, S. Hayami, Mater. Adv., 3, 3418-3422 (2022). DOI: 10.1039/D2MA00126H

  6. Enhanced mixed proton and electron conductor at room temperature from chemically modified single-wall carbon nanotubes, N. N. Rabin, Md.S. Islam, M. Fukuda, J. Yagyu, R. Tagawa, Y. Sekine, S. Hayami, RSC. Adv., 12(14), 8632-8636 (2022). DOI: 10.1039/D2RA00521B

  7. A Ferroelectric Metallomesogen Exhibiting Field-Induced Slow Magnetic Relaxation, R. Akiyoshi, H. Zenno, Y. Sekine, M. Nakaya, M. Akita, D. Kosumi, L. F. Lindoy, S. Hayami, Chem. Eur. J., 28(5), 1-7 (2021). DOI: 10.1002/chem.202103367

  8. Flexibility Control of Two-Dimensional Coordination Polymers by Crystal Morphology: Water Adsorption and Thermal Expansion, R. Ohtani, H. Yoshino, J. Yanagisawa, H. Ohtsu, D. Hashizume, Y. Hijikata, J. Pirillo, M. Sadakiyo, K. Kato, Y. Shudo, S. Hayami, B. L. Ouay, M. Ohba, Chem. Eur. J., 27(72), 18135-18140 (2021). DOI: 10.1002/chem.202103404
  9. Microwave aided conversion of cellulose to glucose using polyoxometalate as catalyst, M. Nakamura, Md. S. Islam, M. A. Rahman, N. N. Rabin, M. Fukuda, Y. Sekine, J. N. Beltramini, Y. Kim, S. Hayami, RSC Adv., 11(55), 34558-34563 (2021). DOI: 10.1039/D1RA04426E
  10. Thermochromism in a dinuclear copper complex by spin state changes at various temperatures, T. Hamaguchi, Y. Matsuda, N. Satomi, R. Ishikawa, S. Hayami, I. Ando, S. Kawata, Polyhedron, 211, 115540 (2021). DOI: 10.1016/j.poly.2021.115540
  11. Engineering ferromagnetism in Ni(OH)2 nanosheets using tunable uniaxial pressure in graphene oxide/reduced graphene oxide, Y. Shudo, Md. S. Islam, H. Zenno, M. Fukuda, M. Nakaya, N. N. Rabin, Y. Sekine, L. F. Lindoy, S. Hayami, Phys. Chem. Chem. Phys., 23(42), 24233-24238 (2021). DOI: 10.1039/D1CP03387E
  12. Structural and Magnetic Characterization of Homo- and Heterometallic Trinuclear Ni(II) and Cu(II) Clusters with N2O6 Acyclic Polydentate Ligand, S. Kusumoto, H. Umeno. Y. Kim, Y. Sekine, M. Nakamura, S. Hayami, Chem. Lett., 50(12), 1945-1948 (2021). DOI: 10.1246/cl.210501
  13. Lethal Interactions of SARS-CoV-2 with Graphene Oxide: Implications for COVID-19 Treatment, M. Fukuda, Md. S. Islam, R. Shimizu, H. Nassar, N. N. Rabin, Y. Takahashi, Y. Sekine, L. F. Lindoy, T. Fukuda, T. Ikeda, S. Hayami, ACS Appl. Nano Mater., 4(11), 11881-11887 (2021). Supplementary Cover, DOI: 10.1021/acsanm.1c02446
  14. Crystal Structures and Spin Crossover of Iron (III) Cocrystal Formed via Halogen Bonding, H. Zenno, R. Akiyoshi, M. Nakamura, Y. Sekine, S. Hayami, Chem. Lett., 50(6), 1259-1262 (2021). DOI: 10.1246/cl.210101
  15. The coordination chemistry of benzhydrazide with lanthanide(III) ions: hydrothermal in situ ligand formation, structures, magnetic and photoluminescence sensing properties, C. Theppitak, F. Kielar, W. Dungkaew, M. Sukwattanasinitt, L. Kangkaew, S. Sahasithiwat, H. Zenno, S. Hayami, K. Chainok, RSC Adv.,11(40), 24709-24721 (2021). DOI: 10.1039/D1RA03106F
  16. A plastically bendable and polar organic crystal, S. Kusumoto, A. Sugimoto, D. Kosumi, Y. Kim, Y. Sekine, M. Nakamura, S. Hayami, CrystEngComm., 23(33), 5560-5563 (2021). DOI: 10.1039/D1CE00724F
  17. Enhanced Fuel Cell Performance Using Ultrafast, Out-of-Plane Proton-Conducting, 3D Graphene Oxide as an Electrolyte, J. Yagyu, Md. S. Islam, Y. Shudo, M. Fukuda, H. Ushijima, J. Ohyama, S. Ida, L. F. Lindoy, S. Hayami, ACS Appl. Energy Mater., 4(6), 6296-6301 (2021). DOI: 10.1021/acsaem.1c01086
  18. Enhanced thermoelectric properties exhibited by unreduced freestanding graphene oxide/carbon nanotube membranes, Md. S. Islam, H. Ohmagari, M. A. Rahman, M. Fukuda, Y. Shudo, J. Yagyu, Y. Sekine, L. F. Lindoy, S. Hayami, Mater. Adv., 2(17), 5645-5649 (2021). DOI: 10.1039/D1MA00299F
  19. Encapsulation and Controlled Release of Antimalarial Drug Using Surface Functionalized Mesoporous Silica Nanocarriers, H. Hirayama, S. A. Amolegbe, Md. S. Islam, M. A. Rahman, N. Goto, Y. Sekine, S. Hayami, J. Mater. Chem. B, 9, 5043-5046 (2021). DOI: 10.1039/D1TB00954K
  20. High proton conductivity from titanium oxide nanosheets and their variation based on crystal phase, H. Yasutake, Md. S. Islam, M. A. Rahman, J. Yagyu, M. Fukuda, Y. Shudo, K. Kuroiwa, Y. Sekine, S. Hayami, Bull. Chem. Soc. Jpn., 94(7), 1840-1845 (2021). DOI: 10.1246/bcsj.20210139
  21. Hydrogen Bond-Induced Abrupt Spin Crossover Behaviour in 1-D Cobalt(II) Complexes-the Key Role of Solvate Water Molecules, H. Zenno, F. Kobayashi, M. Nakamura, Y. Sekine, L. F. Lindoy, S. Hayami, Dalton. Trans., 50, 7843-7853 (2021). DOI: 10.1039/D1DT01069G
  22. 1D Mn(III) coordination polymers exhibiting chiral symmetry breaking and weak ferromagnetism, A. Hara, S. Kusumoto, Y. Sekine, J. Harrowfield, Y. Kim, S. Hayami, M. Nakamura, Dalton. Trans., 16(50), 5428-5432 (2021). DOI: 10.1039/D1DT00569C
  23. Supramolecular Modulation of Spin Crossover in an Fe(II) Dinuclear Triple Helicate, A. R. Craze, H. Zenno, M. C. Pfrunder, J. C. McMurtrie, S. Hayami, J. K. Clegg, F. Li, Inorg. Chem., 60(9), 6731-6738 (2021). DOI: 10.1021/acs.inorgchem.1c00553
  24. Crystallization of Diamond from Graphene Oxide Nanosheets by a High Temperature and High Pressure Method, M. Fukuda, Md. S. Islam, Y. Sekine, T. Shinmei, L. F. Lindoy, S. Hayami ChemistrySelect, 6(14), 3399-3402 (2021). DOI: 10.1002/slct.202100574
  25. Engineering tunable conductivity, p-n junction and light-harvesting semi-conductivity of graphene oxide by fixing reduction mood only, M. R. Karim, M. N. Uddin, M. A. Shaikh, M. S. Rahaman, I. A. Siddiquey, M. A. Arafath, M. S. Islam, S. Hayami, K. A. Alamry, A. M. Asiri, M. M. Rahman J. Taiwan Inst. Chem. Eng., 120, 325-335 (2021).DOI: 10.1016/j.jtice.2021.03.019
  26. Metal complex lipids for fluid-fluid phase separation in co-assembled phospholipid membranes, R. Ohtani, Y. Anegawa, H. Watanabe, Y. Tajima, M. Kinoshita, N. Matsumori, K. Kawano, S. Yanaka, K. Kato, M. Nakamura, M. Ohba, S. Hayami, Angew. Chem. Int. Ed., 60(24), 13603-13608 (2021). DOI: 10.1002/anie.202102774
  27. 3D Porous Ni/NiOx as a bifunctional oxygen electrocatalyst derived from Freeze-dried Ni(OH)2, Y. Shudo, M. Fukuda, Md. S. Islam, K. Kuroiwa, Y. Sekine, M. R. Karim, S. Hayami, Nanoscale., 13(10), 5530-5535 (2021). DOI: 10.1039/D0NR08034A
  28. Ferroelectric and Spin Crossover Behavior in a Cobalt(II) Compound Induced by Polar-Ligand-Substituent Motion, R. Akiyoshi, Y. Komatsumaru, M. Donoshita, S. Dekura, Y. Yoshida, H. Kitagawa, Y. Kitagawa, L. F. Lindoy, S. Hayami, Angew. Chem. Int. Ed., 60(23), 12717-12722 (2021). DOI: 10.1002/anie.202015322
  29. Spin crossover phenomena in long chain alkylated complexes, R. Akiyoshi, R. Ohtani, L. F. Lindoy, S. Hayami, Dalton. Trans., 15(50), 5065-5079 (2021). DOI: 10.1039/D1DT00004G
  30. Functionalised Terpyridines and Their Metal Complexes-Solid-State Interactions, Y. H. Lee, J. Y. Kim, S. Kusumoto, H. Ohmagari, M. Hasegawa, P. Thuéry, J. Harrowfield, S. Hayami, Y. Kim, Chemistry, 2021, 3(1), 199-227 (2021). DOI: 10.3390/chemistry3010016
  31. Coordinated halide and pseudo halide-dependent structures and photoluminescence of defective double cubane Zn(II) clusters, T. Kuramitsu, S. Kusumoto, H. Ohmagari, M. Hasegawa, P. Thuéry, Y. Kim, S. Hayami, M. Nakamura, Eur. J. Inorg. Chem., 2021, 1160-1164 (2021). DOI: 10.1002/ejic.202001138
  32. Elastic Crystalline Fibers Composed of a Nickel(II) Complex, S. Kusumoto, A. Sugimoto, Y. Zhang, Y. Kim, M. Nakamura, S. Hayami, Inorg. Chem., 60(3), 1294-1298 (2021). DOI: 10.1021/acs.inorgchem.0c03295
  33. Magnetism in a helicate complexes arising with the tetradentate ligand, H. Ohmagari, M. Nakaya, K. Tanaka, H. Zenno, R. Akiyoshi, Y. Sekine, Y. Zhang, K. S. Min, M. Hasegawa, L. F. Lyndoy, S. Hayami, Dalton. Trans., 50(2), 494-498 (2021). DOI: 10.1039/D0DT03990J
  34. Light-induced excited spin state trapping in iron(III) complexes, M. Nakaya, R. Ohtani, L. F. Lindoy, S. Hayami, Inorg. Chem. Front., 8(2), 484-498 (2021). DOI: 10.1039/D0QI01188F
  35. Spin State Modulation in Cobalt(II) Terpyridine Complexes by Co-crystallization with 1,3,5-Triiodo-2,4,6-trifluorobenzene, F. Kobayashi, K. Iwaya, H. Zenno, M. Nakamura, L. F. Lindoy, S. Hayami, Bull. Chem. Soc. Jpn., 94(1), 158-163 (2021). DOI: 10.1246/bcsj.20200246
  36. Thuery, Y. Atoini, S. Kusumoto, S. Hayami, Y. Kim, J. Harrowfield, Optimizing Photoluminescence Quantum Yields in Uranyl Dicarboxylate Complexes: Further Investigations of 2,5‐, 2,6‐ and 3,5‐Pyridinedicarboxylates and 2,3‐Pyrazinedicarboxylate, Eur. J. Inorg. Chem., 46, 4391-4400 (2020). DOI: 10.1002/ejic.202000803
  37. Nakaya, R. Ohtani, S. Hayami, Guest Modulated Spin States of Metal Complex Assemblies, Eur. J. Inorg. Chem., 39, 3709-3719 (2020). DOI: 10.1002/ejic.202000553
  38. Kobayashi, Y. Komatsumaru, R. Akiyoshi, M. Nakamura, L. F. Lindoy, S. Hayami, Water Molecule-Induced Reversible Magnetic Switching in a Bis-Terpyridine Cobalt(II) Complex Exhibiting Coexistence of Spin Crossover and Orbital Transition Behaviors, Inorg. Chem., 59(23), 16843-16852 (2020). DOI: 10.1021/acs.inorgchem.0c00818
  39. Kobayashi, R. Akiyoshi, D. Kosumi, M. Nakamura, L. F. Lindoy, S. Hayami, Solvent Vapor-Induced Polarity and Ferroelectricity Switching, Chem. Commun., 56(72), 10509-10512 (2020). DOI: 10.1039/D0CC04497K
  40. J. Howard-Smith, A. R. Craze, H. Zenno, J. Yagyu, S. Hayami, F. Li, A large dinuclear Fe(II) triple helicate demonstrating a two-step spin crossover, Chem. Commun., 2020(56), 8838-8841 (2020). DOI: 10.1039/D0CC03708G
  41. Ponjan, F. Kielar, W. Dungkaew, K. Kongpatpanich, H. Zenno, S. Hayami, M. Sukwattanasinitt, K. Chainok, Self-assembly pf thre -dimensional oxalate-bridged alkali(I)-lanthanide(III) heterometal-organic frame works, CrystEngComm., 22(29), 4833-4841 (2020). DOI: 10.1039/D0CE00099J
  42. Ohtani, H. Matsunari, T. Yamamoto, K. Kimoto, M. Isobe, K. Fujii, M. Yashima, S. Fujii, A. Kuwabara, Y. Hijikata, S. Noro, M, Ohba, H. Kageyama, S. Hayami, Responsive four‐coordinate Fe(II) nodes in FePd(CN)4, Angew. Chem. Int. Ed., 56(43), 19254-19259 (2020). DOI: 10.1002/anie.202008187
  43. Ohtani, K. Kawano, M. Kinoshita, S. Yanaka, H. Watanabe, K. Hirai, S. Futaki, N. Matsumori, H. Uji-i, M, Ohba, K. Kato, S. Hayami, Pseudo-membrane jackets: Two-dimensional coodination polymers achieving visible phase separation in cell membrane, Angew. Chem. Int. Ed., 59(41), 17931-17937 (2020). DOI: 10.1002/anie.202006600
  44. Zenno, R. Akiyoshi, M. Nakamura, G. Morgan, S. Hayami, Orbital Angular Momentum Crossover in 1-D High Spin Cobalt(II) Complex, Chem. Lett., 49(9), 1099-1102 (2020). DOI: 10.1246/cl.200395
  45. Ogo, T. Kishima, T. Yatabe, K. Miyazawa, R. Yamasaki, T. Matsumoto, T. Ando, M. Kikkawa, M. Isegawa, K. Yoon, S. Hayami, [NiFe],[FeFe],and [Fe] hydrogenase models from isomers, Sci. Adv., 6, eaaz8181 (2020). DOI: 10.1126/sciadv.aaz8181
  46. Yanagisawa, T. Hiraoka, F. Kobayashi, D. Daito, M. Yoshida, M. Kato, G. Kobayashi, M. Ohba, L. F. Lindoy, R. Ohtani, S. Hayami, Luminescent ionic liquid formed from a melted rhenium(V) cluster, Chem. Commun., 56(57), 7957-7960 (2020). DOI: 10.1039/D0CC02937H
  47. Kusumoto, A. Saso, H. Ohmagari, M. Hasegawa, Y. Kim, M. Nakamura, L. F. Lindoy, S. Hayami, Solvent-Dependent Bending Ability of Salen-Derived Organic Crystals, ChemPlusChem, 85(8), 1692-1696 (2020). DOI: 10.1002/cplu.202000362
  48. Akiyoshi, K. Kuroiwa, M. Sakuragi, S. Yoshimoto, R. Ohtani, M. Nakmura, L. F. Lindoy, S. Hayami, Double-layered honeycomb architectures constructed via hierarchical self-assembly of hexagonal spin crossover cobalt(II) metallacycles, Chem. Commun., 56(43), 5835-5838 (2020). DOI: 10.1039/D0CC02628J
  49. Fukuda, M. S. Islam, T. Mashimo, S. Hayami, Pulsed plasma assisted Cl-doped graphene nano dots with semiconducting property, Chem. Lett., 49(6), 648-651 (2020). DOI: 10.1246/cl.200108
  50. Nakaya, W. Kosaka, H. Miyasaka, Y. Komatsumaru, S. Kawaguchi, K. Sugimoto, Y. Zhang, M. Nakamura, L. F. Lindoy, S. Hayami, CO2-induced spin state switching at room temperature in an monomeric cobalt(ii) complex with the porous nature, Angew. Chem. Int. Ed., 59, 10658-10665 (2020). DOI: 10.1002/ange.202003811
  51. Hirano, J. N. Beltramini, A. Mori, M, Nakamura, M. R. Karim, Y. Kim, M. Nakamura, S. Hayami, Microwave-assisted catalytic conversion of glucose to 5-hydroxymethylfurfural using "three dimensional" graphene oxide hybrid catalysts, RSC Adv., 10, 11727-11736 (2020). DOI: 10.1039/D0RA01009J
  52. Fukuda, M. S. Islam, Y. Shudo, J. Yagyu, L. F. Lindoy, S. Hayami, Ion conduction switching between H+ and OH− induced by pH in graphene oxide, Chem. Commun., 56(31), 4364-4367 (2020). DOI: 10.1039/D0CC00769B
  53. R. Karim, M. M. Rahman, A. M. Asiri, S. Hayami, Branched Alkylamine-Reduced Graphene Oxide Hybrids as a Dual Proton-Electron Conductor and Organic-Only Water-Splitting Photocatalyst, ACS Appl. Matter. Interfaces, 12(9), 10829-10838 (2020). DOI: 10.1021/acsami.9b21200
  54. R. Craze, M. M. Bhadbhade, Y. Komatsumaru, C. E. Marjo, S. Hayami, F. Li, A Rare Example of a Complete, Incomplete, and Non-Occurring Spin Transition in a [Fe2L3]X4 Series Driven by a Combination of Solvent-and Halide-Anion-Mediated Steric Factors, Inorg. Chem., 59, 1274-1283 (2020). DOI: 10.1021/asc.inorgchem.9b02995
  55. Ishikawa, S. Ueno, S. Nifuku, Y. Horii, H. Iguchi, Y. Miyazaki, M. Nakano, S. Hayami, S. Kumagai, K. Katoh, Z.-Y. Li, M. Yamashita, S. Kawata, Simultaneous Spin-Crossover Transition and Conductivuty Switching in a Dinuclear Iron(III) Coordination Compound Based on 7,7',8,8'-Tetracyano-p-quinodimethane, Chem, Eur, J., 26, 1278-1285 (2020). DOI: 10.1002/chem.201903934
  56. Choo, A. R. Jeong, H. Yeo, S. Hayami, K. S. Min, Synthesis, crystal structure, and photoluminescent properties of mononuclear Er(III) and Yb(III) complexes showing near-infrared emission, J. Mol. Struct., 1206, 12726-5049 (2020). DOI: 10.1016/j.molstruc.2020.127726
  57. W. Shin, A. R. Jeong, J. H. Jeong, H. Zenno, S. Hayami, K. S. Min, Two-dimensional square-grid iron(II) coordination polymers showing anion-dependent spin crossover behavior, RSC Adv., 10, 5040-5049 (2020). DOI: 10.1039/c9ra09782a
  58. Kusumoto, Y. Kim, M. Nakamura, L. F. Lindoy, S. Hayami, Ferromagnetically coupled hydroxo-bridged heptanuclear Ni(II) wheel cluster with S= 7 ground spin state, Chem. Lett., 49, 24-27 (2020). DOI: 10.1246/cl.190765

KAKENHI Grant-in-Aid for Scientific Research (A) JP17H01200 for 2017-2021 and Grant-in-Aid for Challenging Exploratory Research 20K21213 for 2020-2021.


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