Preparation and physical properties of sub-micron size multi-components particles with specific structures

2008 Fiscal Year Final Research Report

• Project/Area Number: 18750115
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Functional materials chemistry
• Research Institution: Nagoya University
• Principal Investigator: YOSHIKAWA Hirofumi Nagoya University, 大学院・理学研究科, 助教 (60397453)
• Project Period (FY): 2006 – 2008
• Keywords: 中空球 / マグネタイト / 磁性 / 酸化チタン / 太陽電池 / ミー散乱

Research Abstract

ナノからサブミクロンサイズの物質はサイズの減少に伴う体積減少や表面変化によって、多くの物性および機能においてバルク体とは異なる性質を示す。本研究では、新奇な磁気機能の獲得を目指して、直径500nm程度の金属酸化物及び金属からなる中空球殻磁性体の化学合成をおこなった。このような中空球に関して物性を測定したところ、バルクには見られない中空球構造に特異な磁気物性や光物性(太陽電池特性や光触媒能など)を見出すことができた。

Research Products

• [Journal Article] Green magnetite (Fe3O4): Unusual optical Mie scattering and magnetic isotropy of submicron-size hollow spheres (2009)
  • Author(s): Q.-L. Ye, H. Yoshikawa, S. Bandow, and K. Awaga
  • Journal Title: Appl. Phys. Lett. 94 Pages: 063114/1-063114/3
  • Peer Reviewed
• [Journal Article] Electrochemical and Electrochromic Properties of Octathio[8]circulene Thin Films in Ionic Liquids (2008)
  • Author(s): T. Fujimoto, M. M. Matsushita, H. Yoshikawa, and K. Awaga
  • Journal Title: J. Am. Chem. Soc. 130 Pages: 15790-15791
  • Peer Reviewed
• [Journal Article] Diverse magnetic and electrical properties of molecular solids containing the thiazyl radical BDTA (2008)
  • Author(s): K. Awaga, Y. Umezono, W. Fujita, H. Yoshikawa, H.-B. Cui, H. Kobayashi, S. S. Staniland, and N. Robertson
  • Journal Title: Inorg. Chim. Acta. 361 Pages: 3761-3770
  • Peer Reviewed
• [Journal Article] Molecular, Crystal, and Thin-Film Structures of Octathio[8]circulene: Release of Anti-Aromatic Molecular Distortion and Lamellar Structure of Self-Assembling Thin Films (2008)
  • Author(s): T. Fujimoto, R. Suizu, H. Yoshikawa, and K. Awaga
  • Journal Title: Chem. -Eur. J. 14 Pages: 6053-6056
  • Peer Reviewed
• [Journal Article] Preparation, photocatalytic activities and dye-sensitized solar-cell performance of submicron-scale TiO2 hollow spheres (2008)
  • Author(s): Y. Kondo, H. Yoshikawa, K. Awaga, M. Murayama, T. Mori, K. Sunada, S. Bandow, and S. Iijima
  • Journal Title: Langmuir 24 Pages: 547-550
  • Peer Reviewed
• [Journal Article] Rechargeable Molecular Cluster Batteries (2007)
  • Author(s): H. Yoshikawa, C. Kazama, K. Awaga, M. Satoh, and J. Wada
  • Journal Title: Chem. Commun. Pages: 3169-3170
  • Peer Reviewed
• [Journal Article] Electrochromism and Stable n-Type Doping of Highly Oriented Thin Films of Tetrakis(thiadiazole)porphyrazine (2007)
  • Author(s): Y. Miyoshi, M. Kubo, T. Fujinawa, Y. Suzuki, H. Yoshikawa, and K. Awaga
  • Journal Title: Angew. Chem. Int. Ed. 46 Pages: 5532-5536
  • Peer Reviewed
• [Journal Article] Effects of the unique shape of submicron magnetite hollow spheres on magnetic properties and domain states (2007)
  • Author(s): Q.-L. Ye, Y. Kozuka, H. Yoshikawa, K. Awaga, S. Bandow, and S. Iijima
  • Journal Title: Phys. Rev. B 75 Pages: 224404/1-224404/5
  • Peer Reviewed
• [Journal Article] 1D helical polymeric chain with pseudo-53 screw axis formed by cuprophilicity; synthesis and crystal structure of copper(I) pivalate (2006)
  • Author(s): T. Sugiura, H. Yoshikawa, and K. Awaga
  • Journal Title: Inorg. Chem. 45 Pages: 7584-7586
  • Peer Reviewed
• [Journal Article] Phase Selective Preparations and Surface Modifications of Spherical Hollow Nanomagnets (2006)
  • Author(s): M. Ohnishi, Y. Kozuka, Q.-L. Ye, H. Yoshikawa, K. Awaga, R. Matsuno, M. Kobayashi, A. Takahara, T. Yokoyama, S. Bandow, and S. Iijima
  • Journal Title: J. Mater. Chem. 16 Pages: 3215-3220
  • Peer Reviewed
• [Presentation] Mn12クラスター電池の電池特性と反応機構 (2008)
  • Author(s): 吉川浩史、濱中俊、高田早矢加、近藤良彦、阿波賀邦夫、横山利彦、和田潤、芥川奈緒、佐藤正春
  • Organizer: 第2回分子科学討論会
  • Place of Presentation: 福岡
  • Year and Date: 20080924-27
• [Presentation] Molecular Cluster Batteries-Mn12 can be a cathode active material! (2008)
  • Author(s): H. Yoshikawa, S. Takata, Y. Kondo, K. Awaga, T. Yokoyama, J. Wada, N. Akutagawa, M. Satoh
  • Organizer: 38th International Conference on Coordination Chemistry(ICCC38)
  • Place of Presentation: Jerusalem, Israel
  • Year and Date: 20080720-25
• [Presentation] コバルトフェライト-酸化コバルト複成分中空球殻磁性体の作成と磁気的性質 (2008)
  • Author(s): 長屋貴量、叶全林、吉川浩史、阿波賀邦夫、坂東俊治、飯島澄男
  • Organizer: 日本化学会第88春季年会
  • Place of Presentation: 東京
  • Year and Date: 20080326-30
• [Presentation] 分子クラスター電池の反応機構解明 (2008)
  • Author(s): 吉川浩史、高田早矢加、近藤良彦、阿波賀邦夫、横山利彦、和田潤、芥川奈緒、佐藤正春
  • Organizer: 日本化学会第88春季年会
  • Place of Presentation: 東京
  • Year and Date: 20080326-30
• [Presentation] Fabrications of Rechargeable Molecular Cluster Batteries (2007)
  • Author(s): H. Yoshikawa, S. Takata, C. Kazama, K. Awaga, M. Satoh, K. Watanabe, J. Wada
  • Organizer: A Joint Conference of the International Symposium on Electron Spin Science and the 46th Annual Meeting of the Society of Electron Spin Science and Technology
  • Place of Presentation: Shizuoka, Japan
  • Year and Date: 20071106-09
• [Presentation] 飯島澄男サブミクロン二酸化チタン中空球の合成とその応用 (2007)
  • Author(s): 近藤良彦、吉川浩史、阿波賀邦夫、村山正樹、森竜雄、橋本和仁、砂田香矢乃、坂東俊治
  • Organizer: 第1回分子科学討論会
  • Place of Presentation: 仙台
  • Year and Date: 20070917-20
• [Presentation] Mn12分子クラスター二次電池の作製とその性質 (2007)
  • Author(s): 吉川浩史、高田早矢加、風間千恵子、阿波賀邦夫、和田潤、佐藤正春
  • Organizer: 第1回分子科学討論会
  • Place of Presentation: 仙台
  • Year and Date: 20070917-20
• [Presentation] 機能性有機-無機複合クラスター物質の開拓と応用 (2007)
  • Author(s): 吉川浩史
  • Organizer: 物質合成研究機関連携事業第2回大学間連携・若手フォーラム
  • Place of Presentation: 名古屋大学
  • Year and Date: 2007-11-02
• [Presentation] Pseudo-single-domain state and physical properties of submicron magnetite hollow spheres (2006)
  • Author(s): Quan-Lin Ye, Yasuharu Kozuka, Hirofumi Yoshikawa, Kunio Awaga, Atsushi Takahara, Shunji Bandow, Sumio Iijima
  • Organizer: 日本物理学会2006年秋季大会
  • Place of Presentation: 千葉
  • Year and Date: 20060923-26
• [Presentation] サブミクロン球殻クラスターの合成と性質 (2006)
  • Author(s): 吉川浩史
  • Organizer: 物質合成研究機関連携事業 大学間連携・第二回物質合成フォーラム
  • Place of Presentation: 京都大学
  • Year and Date: 2006-07-14
• [Remarks] ホームページ等
  • URL: http://mbox.chem.nagoya-u.ac.jp/~awagak/yoshikawa.html
• [Patent(Industrial Property Rights)] 分子クラスター二次電池 (2008)
  • Inventor(s): 阿波賀邦夫、吉川浩史、和田潤
  • Industrial Property Rights Holder: 名古屋大学, 日本化成株式会社
  • Patent Publication Number: 特許権,特開2008-204668
  • Acquisition Date: 2008-09-04
• [Patent(Industrial Property Rights)] 分子クラスター二次電池 (2007)
  • Inventor(s): 阿波賀邦夫、吉川浩史、和田潤
  • Industrial Property Rights Holder: 名古屋大学, 日本化成株式会社
  • Industrial Property Number: 特許権,特願2007-037128
  • Filing Date: 2007-02-19