Nagoya University Graduate School of Science / Research Center for Materials Science, Laboratory of Advanced Materials Assistant Prof. Hirofumi Yoshikawa

Assistant Prof. Hirofumi Yoshikawa

• The University of Tokyo
  • Ph.D.(D.Sc.) in inorganic chemistry, March 2003
  • Ph.D. Thesis: "Synthesis, Structures and Properties of Polycyano-Polycadmate Host Clathrates Including Viologen as a Guest" (Prof. S. Nishikiori)
  • B.Sc. in inorganic chemistry, March 1998 (Prof. H. Nishihara)

• 2000. Oct.   Visiting Scholar (Prof. J. Lipkowski, Poland)
• 2003 2005   Postdoctral fellow (the 21st century COE program at Nagoya University)
• 2005. Apr.  Present   Assistant Professor (Nagoya University)

The Chemical Society of Japan, The Physical Society of Japan、The American Chemical Society、Japan Society of Coordination Chemistry, Japan Society of Molecular Science

Coordination Chemistry, Solid State Physical Chemistry

• Creation of Electronic Materials using Metal Complexes (Original papers 16, 25, 29)
• Metal and Metal Oxide Sub-micron Hollow Spheres (Original papers 9, 12, 14, 17, 22, Review 3)
• Phthalocyanine Derivatives: "Prophyrazine" (Original papers 7, 8, 11, 15, 24、Review 2)
• Polycyano-Polycadmate Host Clathrates Including Viologen as a Guest (Original papers 2‐6, 10、Review 1)
• Others (Original papers 1, 13, 18, 19, 20, 21, 23, 26, 27, 28)

• 29. A Novel Free Radical Probe Based on a Preluminescent Iridium Complex Bearing a Nitronyl Radical Moiety
  • H. Yoshikawa, M. Kobayashi, T. Takahashi, and K. Awaga
    Bull. Chem. Soc. Jpn. 2010, to be appeared on July(Selected paper)
• 28. Highly efficient alternating photocurrent from interactive organic radical dimers. A novel light-harvesting mechanism for optoelectronic conversion
  • L. Hu, A. Iwasaki, R. Suizu, H. Yoshikawa, H. Ito, and K. Awaga
    Chem. Phys. Lett. 2010, 484, 177-180
• 27. Heterobimetallic Tungsten/Molybdenum(IV)"Copper(II) MOFs Constructed by a Unique 2D → 3D Architecture and Exhibiting New Topology and Magnetic Properties
  • J. Qian, H. Yoshikawa, J. Zhang, H. Zhao, K. Awaga, and C. Zhang
    Crystal Growth & Design 2009, 12(9), 5351-5355
• 26. High-Yield Synthesis of Ultrathin Metal Nanowires in Carbon Nanotubes
  • R. Kitaura, R. Nakanishi, T. Saito, H. Yoshikawa, K. Awaga, H. Shinohara
    Angew. Chem. Int. Ed. 2009, 48, 8298 8302
• 25. Rechargeable Batteries Driven by Redox Reactions of Mn12 Clusters with Structural Changes: XAFS Analyses of the Charging/Discharging Processes in Molecular Cluster Batteries
  • H. Yoshikawa, S. Hamanaka, Y. Miyoshi, Y. Kondo, S. Shigematsu, N. Akutagawa, M. Sato, T. Yokoyama, and K. Awaga
    Inorg. Chem. 2009, 48, 9057 9059
• 24. Electrochemical Structural Transformation and Reversible Doping/Dedoping of　Lithium Phthalocyanine Thin Films
  • M. Inagawa, H. Yoshikawa, T. Yokoyama, K. Awaga
    Chem. Commun., 2009, 3389-3391
• 23. Photoconductive Organic Radical Thin Films: Interactive Radical Dimers for Photofunctions
  • A. Iwasaki, L. Hu, R. Suizu, K. Nomura, H. Yoshikawa, K. Awaga, Y. Noda, K. Kanai, Y. Ouchi, K. Seki, and H. Ito
    Angew. Chem. Int. Ed. 2009, 48, 4022-4024
• 22. Green magnetite (Fe₃O₄): Unusual optical Mie scattering and magnetic isotropy of submicron-size hollow spheres
  • Q.-L. Ye, H. Yoshikawa, S. Bandow, and K. Awaga,
    Appl. Phys. Lett. 2009, 94, 063114/1-063114/3
    Highlighted in Virtual Journal of Nanoscale Science & Technology(2009/2/23)
• 21. Electrochemical and Electrochromic Properties of Octathio[8]circulene Thin Films in Ionic Liquids
  • T. Fujimoto, M. M. Matsushita, H. Yoshikawa and K. Awaga
    J. Am. Chem. Soc., 2008, 130 (47), 15790 15791
• 20. High Yield Synthesis and Characterization of the Structural and Magnetic Properties of Crystalline ErCl₃ Nanowires in Single-Walled Carbon Nanotube Templates
  • R. Kitaura, D. Ogawa, K. Kobayashi, T. Saito, S. Ohshima, T. Nakamura, H. Yoshikawa, K. Awaga, and H. Shinohara
    Nano Res., 2008, 1, 152-157.
• 19. Diverse magnetic and electrical properties of molecular solids containing the thiazyl radical BDTA
  • K. Awaga, Y. Umezono, W. Fujita, H. Yoshikawa, H.-B. Cui, H. Kobayashi, S. S. Staniland, and N. Robertson
    Inorg. Chim. Acta., 2008, 361, 3761-3770.
• 18. Molecular, Crystal, and Thin-Film Structures of Octathio[8]circulene: Release of Anti-Aromatic Molecular Distortion and Lamellar Structure of Self-Assembling Thin Films
  • T. Fujimoto, R. Suizu, H. Yoshikawa, and K. Awaga
    Chem. -Eur. J., 2008, 14, 6053-6056.
• 17. Preparation, photocatalytic activities and dye-sensitized solar-cell performance of submicron-scale TiO₂ hollow spheres
  • Y. Kondo, H. Yoshikawa, K. Awaga, M. Murayama, T. Mori, K. Sunada, S. Bandow, S. Iijima
    Langmuir, 2008, 24, 547-550.
• 16. Rechargeable Molecular Cluster Batteries
  • H. Yoshikawa, C. Kazama, K. Awaga, M. Satoh, and J. Wada
    Chem. Commun. 2007, 3169-3170.
    Selected as HOT Article
• 15. Electrochromism and Stable n-Type Doping of Highly Oriented Thin Films of Tetrakis(thiadiazole)porphyrazine
  • Y. Miyoshi, M. Kubo, T. Fujinawa, Y. Suzuki, H. Yoshikawa, and K. Awaga
    Angew. Chem. Int. Ed. 2007, 46, 5532-5536.
• 14. Effects of the unique shape of submicron magnetite hollow spheres on magnetic properties and domain states
  • Q.-L. Ye, Y. Kozuka, H. Yoshikawa, K. Awaga, S. Bandow, and S. Iijima
    Phys. Rev. B 2007, 75, 224404/1-224404/5.
• 13. 1D helical polymeric chain with pseudo-5₃ screw axis formed by cuprophilicity; synthesis and crystal structure of copper(I) pivalate
  • T. Sugiura, H. Yoshikawa, and K. Awaga
    Inorg. Chem. 2006, 45, 7584-7586.
• 12. Phase Selective Preparations and Surface Modifications of Spherical Hollow Nanomagnets
  • M. Ohnishi, Y. Kozuka, Q.-L. Ye, H. Yoshikawa, K. Awaga, R. Matsuno, M. Kobayashi, A. Takahara, T. Yokoyama, S. Bandow, and S. Iijima.
    J. Mater. Chem. 2006, 16, 3215-3220.
• 11. Tetrakis(thiadiazole)porphyrazines. 4. Direct Template Synthesis, Structure, General Physicochemical Behavior, and Redox Properties of AlIII, GaIII, and InIII Complexes
  • M. P. Donzello, R. Agostinetto, S. S. Ivanova, M. Fujimori, Y. Suzuki, H. Yoshikawa, J. Shen, K. Awaga, C. Ercolani, K. M. Kadish, and P. A. Stuzhin.
    Inorg. Chem. 2005, 44, 8539-8551.
• 10. Crystal structures and spectroscopic properties of polycyano polycadmate host clathrates including a CT complex guest of methylviologen dication and aromatic donor
  • H. Yoshikawa and S. Nishikiori.
    Dalton Trans. 2005, 3056-3064.
• 9. Preparation and magnetic properties of hollow nano-spheres of cobalt and cobalt oxide: Drastic cooling-field effects on remnant magnetization of antiferromagnet
  • H. Yoshikawa, K. Hayashida, Y. Kozuka, A. Horiguchi, K. Awaga, S. Bandow, and S. Iijima
    Appl. Phys. Lett. 2004, 85, 5287-5289.
    Highlighted in Virtual Journal of Nanoscale Science & Technology(2004/12/13)
• 8. Packing Motifs and Magneto-Structural Correlations in Crystal Structures of Metallo-Tetrakis(1,2,5-thiadiazole)porphyrazine Series, MTTDPz (M=H2, Fe, Co, Ni, Cu, Zn)
  • Y. Suzuki, M. Fujimori, H. Yoshikawa, and K. Awaga.
    Chem.  Eur. J. 2004, 10, 5158-5164.
• 7. Packing Motifs in Porphyrazine Macrocycles Carrying Peripherally Annulated Thiadiazole Rings: Crystal Growths of Metal-Free and Cobalt Tetrakis(1,2,5-thiadiazole)porphyrazines
  • M. Fujimori, Y. Suzuki, H. Yoshikawa, and K. Awaga.
    Angew. Chem. Int. Ed. 2003, 42, 5863-5865.
• 6. Crystal Structure and Spectroscopic Properties of the CT Complex of Methyl Viologen Dication and o Dimethoxybenzene Included in a Polycyano-Polycadmate Host and Electrostatic Effects on Its CT Absorption
  • H. Yoshikawa, S. Nishikiori, and T. Ishida.
    J. Phys. Chem. B 2003, 107, 9261-9267.
• 5. Theoretical Study on Photoinduced Color Change and Charge Transfer of Methylviologen
  • T. Ishida, M. Murakami, G. Watanabe, H. Yoshikawa, and S. Nishikiori.
    Internet Electronic Jouranl of Molecular Design 2003, 2, 14 23.
• 4. Polycyano-polycadmate host clathrates including a methylviologen dication. Syntheses, crystal structures and photo-induced reduction of methylviologen dication.
  • Hirofumi Yoshikawa, Shin-ichi Nishikiori, Tokuko, Watanabe, Toshimasa Ishida, Go Watanabe, Makoto Murakami, Kinga Suwinska, Roman Luboradzki, Janusz Lipkowski
    J.C.S., Dalton Trans. 2002, 1907-1917.
• 3. Crystal structure of a polycyano-polycadmate host clathrate including a charge-transfer complex of methylviologen dication and mesitylene as a guest
  • Hirofumi Yoshikawa, Shin-ichi Nishikiori, Kinga Suwinska, Roman Luboradzki, Janusz Lipkowski
    Chem. Commun. 2001, 1398-1399.
• 2. Photoinduced Color Change of Methylviologen in Polycyano-Polycadmate Host Clathrates
  • H.Yoshikawa and S.Nishikiori
    Chem. Lett. 2000, 142-143.
• 1. Synthesis and redox properties of poly(cobaltacyclopentadienylene thienylene)
  • I.Matsuoka, H.Yoshikawa, M.Kurihara, and H.Nishihara
    Synth. Met. 1999, 102, 1519-1520.

• 3. Magnetic and Optical Properties of Submicron-size Hollow Spheres
  • Q.-L. Ye, H. Yoshikawa, and K. Awaga
    the special issue on "Magnetic Nanoparticles" Materials 2010, 3(2), 1244-1268
• 2. "Multi-dimensional crystal structures and unique solid-state properties of heterocyclic thiazyl radicals and related materials"
  • K.Awaga, T. Tanaka, T. Shirai, M. Fujimori, Y. Suzuki, H. Yoshikawa, and W. Fujita.
    Bull. Chem. Soc. Jpn. 2006, 79, 25-34.
• 1. "Inorganic-Organic Hybrid Molecular Architectures of Cyanometalate Host and Organic Guest Systems: Specific Behavior of the Guests"
  • S. Nishikiori, H. Yoshikawa, Y. Sano, and T. Iwamoto.
    Acc. Chem. Res. 2005, 38, 227-234.