Synthesis of Nano-materials of Fine-controlled Hetero-metal Assembly for Cooperative Function of Metal-complexes

• Project/Area Number: 19205020
• Research Category: Grant-in-Aid for Scientific Research (A)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Functional materials chemistry
• Research Institution: Keio University
• Principal Investigator: YAMAMOTO Kimihisa Keio University, 資源化学研究所, 教授 (80220458)
• Co-Investigator(Kenkyū-buntansha): IMAOKA Takane 東京工業大学, 資源化学研究所, 助教 (80398635)
• Project Period (FY): 2007 – 2010
• Project Status: Completed (Fiscal Year 2010)
• Budget Amount: ¥51,220,000 (Direct Cost: ¥39,400,000、Indirect Cost: ¥11,820,000); Fiscal Year 2010: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000); Fiscal Year 2009: ¥8,840,000 (Direct Cost: ¥6,800,000、Indirect Cost: ¥2,040,000); Fiscal Year 2008: ¥8,840,000 (Direct Cost: ¥6,800,000、Indirect Cost: ¥2,040,000); Fiscal Year 2007: ¥26,520,000 (Direct Cost: ¥20,400,000、Indirect Cost: ¥6,120,000)
• Keywords: デンドリマー / ナノ材料 / 分子認識 / 有機-金属ハイブリッド / 量子サイズ効果 / 金属集積 / 錯形成 / 触媒機能 / クラスター / ナノ触媒 / 白金触媒 / 酸化チタン

Research Abstract

In this study, on the basis of our original methodlogy for fine-controlled metal-assembly cooperative functional nano-materials which metal salts are located in the nano space precisely were produced.
Platinum chloride quantitatively coordinates with imine sites with a 1:1 complex. Platinum metal assembling was carried out metal using phenylazomethine dendrimer as a template. The number of metal atoms was precisely controlled through the stepwise radical complexation in the dendrimer. The platinum-complex was reduced to form a nono-size particle with 0 valence in the dendrimer template. The fine-controlled particle with 12 platinum atoms shows very higher catalytic activity more than 10 times in comparison with a commercial platinum catalyst(Nature Chem. 2010).

Research Products

• [Journal Article] Fine Controlled Metallodendrimers for Advanced Nano-catalysts (2010)
  • Author(s): Kimihisa Yamamoto
  • Journal Title: Advances in Science and Technology 72 Pages: 261-264
  • Peer Reviewed
• [Journal Article] Fine Controlled Metallodendrimers for Advanced Nano-catalysts (2010)
  • Author(s): Kimihisa Yamamoto
  • Journal Title: Advancea in Science and Technology Volume: 72 Pages: 261-264
• [Journal Article] Size-specific Catalytic Activity of Platinum Clusters Enhances Oxygen Reduction Reactions (2009)
  • Author(s): Kimihisa Yamamoto, Takane Imaoka, Wang-Jae Chun, Osamu Enoki, Hideaki Katoh, Masahiro Takenaga, Atsunori Sonoi
  • Journal Title: Nature Chemistry 1 Pages: 397-402
  • Peer Reviewed
• [Journal Article] Preparation of Photoreduced Precise Platinum Nanoparticle (2009)
  • Author(s): Masahiro Takenaga, Kmihisa Yamamoto
  • Journal Title: J.Photopolym.Sci.and Technol. 22 Pages: 511-512
  • NAID: 130004833293
  • Peer Reviewed
• [Journal Article] Size-specific Catalytic Activity of Platinum Clusters Enhances Oxygen Reduction Reactions (2009)
  • Author(s): K. Yamamoto, T. Imaoka, W. Chun, O. Eoki, H. Ktoh, M. Takenaga, A. Snoi
  • Journal Title: Nature Chemistry 1 Pages: 397-402
• [Journal Article] Preparation of Photoreduced Precise Platinum Nanoparticle (2009)
  • Author(s): M. Takenaga, K. Yamamoto
  • Journal Title: J. Photopolym. Sci. and Technol. 22 Pages: 511-512
  • NAID: 130004833293
• [Journal Article] Size-specific Catalytic Activity of Platinum Clusters Enhances Oxygen Reduction Reactions (2009)
  • Author(s): Kimihisa Yamamoto, Takane Imaoka, Wang-Jae Chun, OsamuEnoki, Hideaki Katoh, Masahiro Takenaga, Atsunori Sonoi
  • Journal Title: Nature Chemistry 1 Pages: 397-402
  • Peer Reviewed
• [Journal Article] The Synthesis and Properties of Carbazole-Phenylazomethine Double Layer-Type Dendrimers (2008)
  • Author(s): Ken Albrecht, Yuto Kasai, Atsushi Kimoto, Kimihisa Yamamoto
  • Journal Title: Macromolecules 41 Pages: 3793-3800
  • Peer Reviewed
• [Journal Article] Quantum Size Effect in TiO2Nanoparticles Prepared by Finely Controlled Metal Assembly on Dendrimer Templates. (2008)
  • Author(s): N. Satoh, T. Nakashima, K. Kamikura, K. Yamamoto
  • Journal Title: Nature Nanotechnology 3 Pages: 106-111
• [Journal Article] Interface Modification on TiO2Electrode Using Dendrimers in Dye-Sensitized Solar Cells (2008)
  • Author(s): Toshio Nakashima, Norifusa Satoh, Ken Albrecht, Kimihisa Yamamoto
  • Journal Title: Chem. Materials 20 Pages: 2538-2543
  • Peer Reviewed
• [Journal Article] Divergent Approach for Synthesis and Terminal-modifications of Dendritic Poly-phenylazomethines (2007)
  • Author(s): Kensaku Takanashi, Kimihisa Yamamoto
  • Journal Title: Org.Lett. 9 Pages: 5151-5154
  • Peer Reviewed
• [Journal Article] Heterometal Assembly in Dendritic Poly-phenylazomethines (2007)
  • Author(s): Kensaku Takanashi, Atsunobu Fujii, Reina Nakajima, Hiroshi Chiba, Masayoshi Higuchi, Yasuaki Einaga, Kimihisa Yamamoto
  • Journal Title: Bull.Chem.Soc.Jpn. 80 Pages: 1563-1572
  • Peer Reviewed
• [Journal Article] Heterometal Assembly in DendriticPolyphenyl -azomethines. (2007)
  • Author(s): K. Takanashi, A. Fujii, R. Nakajima, H. Chiba, M. Higuchi, Y. Enaga, K. Yamamoto
  • Journal Title: Bull. Chem. Soc. Jpn.(CSJ ) 80 Pages: 1563-1572
• [Journal Article] Divergent Approach for Synthesis and Terminal-modifications of DendriticPolyphenylazo -methines. (2007)
  • Author(s): K. Takanashi, K. Yamamoto
  • Journal Title: Org. Lett.(ACS) 9 Pages: 5151-5154
• [Journal Article] Heterometal Assembly in Dendritic Polyphenylazomethines (2007)
  • Author(s): Kensaku Takanashi, Atsunobu Fujii, Reina Nakajima, Hiroshi Chiba, Masayoshi Higuchi, Yasuaki Einaga, Kimihisa Yamamoto
  • Journal Title: Bull. Chem. Soc. Jpn. 80 Pages: 1563-1572
  • NAID: 10019848579
  • Peer Reviewed
• [Journal Article] Divergent Approach for Synthesis and Terminal-modifications of Dendritic Polyphenylazomethines (2007)
  • Author(s): Kensaku Takanashi, Kimihisa Yamamoto
  • Journal Title: Org. Lett. 9 Pages: 5151-5154
  • Peer Reviewed
• [Presentation] 精密金属集積と機能 (2010)
  • Author(s): 山元公寿
  • Organizer: 日本化学会 第90春季年会
  • Place of Presentation: 大阪
  • Year and Date: 2010-03-26
• [Presentation] 精密金属集積と新金属の創成 (2010)
  • Author(s): 山元公寿
  • Organizer: ナノ空間材料シンポジウ、科学技術振興機構
  • Place of Presentation: 東京 依頼講演
  • Year and Date: 2010-01-29
• [Presentation] 精密金属集積と新金属の創成 (2010)
  • Author(s): 山元公寿
  • Organizer: ナノ空間材料シンポジウ
  • Place of Presentation: 東京
  • Year and Date: 2010-01-19
• [Presentation] Metallodendrimers based on Fine-controlled Metal-assembly (2010)
  • Author(s): 山元公寿
  • Organizer: International Symposium on Macrocyclic and Supramolecular Chemistry : (ISMSC)
  • Place of Presentation: Nara(Japan)(Invited)
• [Presentation] 精密金属集積と機能-超分子金属錯体-超分子構造から機能への展開- (2010)
  • Author(s): 山元公寿
  • Organizer: 日本化学会第90春季年会
  • Place of Presentation: 近畿大学(大阪) 依頼講演
• [Presentation] Metallodendrimers based on Fine-controlled Metal-assembly (2010)
  • Author(s): Kimihisa Yamamoto
  • Organizer: International Symposium on Macrocyclic and Supramolecular Chemistry
  • Place of Presentation: Nara, Japan
• [Presentation] Suprametallodendrimers based on Fine-controlled Metal-assembly (2009)
  • Author(s): 山元公寿
  • Organizer: IUPAC 5th International Symposium on Novel Materialsand Synthesis(NMS-V)19th International Symposiumon Fine Chemistry and Functional Polymers(FCFP-XIX), 3rd Symposium on Power Sources for Energy Storage and their Key Materials
  • Place of Presentation: Shanghai(China)
  • Year and Date: 2009-10-18
• [Presentation] メタロデンドリマーの合成と機能-精密無機合成化学を基盤とする金属超微粒子の創製- (2009)
  • Author(s): 山元公寿
  • Organizer: The 26^<th> Internatonal Conference of Photopolymer Science and Technology Materials & Processes for Advanced Microlithography and Nanotechnology
  • Place of Presentation: 千葉
  • Year and Date: 2009-07-01
• [Presentation] Suprametallodendrimers based on Fine controlled Metal-assembly (2009)
  • Author(s): 山元公寿
  • Organizer: IUPAC 5th International Symposium on Novel Materials and Synthesis (NMS-V), 19th International Symposium on Fine Chemistry and Functional Polymers (FCFP-XIX) and 3rd Symposium on Power Sources for Energy Storage and their Key Materials (PS-III)
  • Place of Presentation: Shanghai, China (Plenary Lecture)
• [Presentation] メタロデンドリマーの合成と機能-精密無機合成化学を基盤とする金属超微粒子の創製- (2009)
  • Author(s): 山元公寿
  • Organizer: The 26^<th> International Conference of Photopolymer Science and Technology Materials & Processes for Advanced Micro-lithography and Nanotechnology
  • Place of Presentation: Chiba (Plenary Lecture)
• [Presentation] メタロデンドリマーの合成と機能-精密無機合成化学を基盤とする金属超微粒子の創製- (2009)
  • Author(s): K. Yamamoto
  • Organizer: The 26thInternatonal Conference of Photopolymer Science and Technology Materials & Processes for Advanced Microlithography and Nanotechno- logy
  • Place of Presentation: Chiba(Japan)(Plenary Lecture)
• [Presentation] Synthesis of Fine-Controlled Metallodendrimers (2008)
  • Author(s): Kimihisa Yamamoto
  • Organizer: 18th International Symposium on Fine Chemistry and Functional Polymers (FCFP-XVIII) & IUPAC 4th International Symposium on Novel Materials and their Synthesis(
  • Place of Presentation: Zhenjiang(China)
  • Year and Date: 2008-10-11
• [Presentation] Synthesis of Fine-Controlled Metallo-dendrimers (2008)
  • Author(s): 山元公寿
  • Organizer: 18th International Symposium on Fine Chemistry and Functional Polymers (FCFP-XVIII) & IUPAC 4th International Symposium on Novel Materials and their Synthesis (NMS-IV)
  • Place of Presentation: Zhenjiang (China)(Invited Lecture)
• [Presentation] Synthesis of Fine-Controlled Metallodendrimers, (2008)
  • Author(s): K. Yamamoto
  • Organizer: 18th International Symposium on Fine Chemistry and Functional Polymers (FCFP-XVIII) &IUPAC4th Interna- tional Symposium on Novel Materials and their Synthesis(NMS-IV)
  • Place of Presentation: Zhenjiang(China)(Plenary Lecture)