Laboratories
Materials Characterization Team
Yoshio SAKAGUCHI
Team Head
Yoshio SAKAGUCHI (D.Sci.)
mail

Research Areas

Elemental analyses are important methods for the determination of the chemical compositions of samples, both organic and inorganic. This team accepts the samples for the quantitative analysis. We are improving degradation method of the samples for rapid and accurate analysis. X-ray analysis and electrom microscopy are also important methods for these purposes. We are trying to observe air-sensitive and/or disorderd materials. We are studying the catalytic activities of metal clusters and the emission process of organic electroluminescent materials. Based on these experiences and acuired techniques, we are supporting a wide varieties of researches in the field of chemistry and others.

Research Subject

  1. Quantitative analysis of elements
  2. X-ray diffraction and electron microscopy
  3. Precise synthesis of inorganic compounds and utilization for catalysis
  4. Emission process of organic electroluminescent materials and their spin-chemistry

Related links

  1. RIKEN Advanced Science Institute Website_Laboratories PageNew Window

RIKEN RESEARCH

April 10,2009
Surprise shift
A first-of-a-kind switch in chemical bonding by a zirconium atom spotted by scientists New Window
September 12, 2008
Zirconium takes the strain from carbon rings
'Impossible' molecule undergoes improbable chemistry New Window

List of Selected Publications

  1. Muranaka, A., Ohira, S., Hashizume, D., Koshino, H., Kyotani, F., Hirayama, M., Uchiyama, M.:
    "[18]/[20]pi Hemipophyrazine: a redox-switchable near-infrared dye"
    J. Am. Chem. Soc. 134, 190-193 (2012).
  2. Nagashima, S., Kamiguchi, S., Ohguchi, S., and Chihara, T.:
    "Vapor-phase Beckmann rearrangement of cylcohexanone oxime over halide cluster catalysts"
    Catal. Today, 164, 135-138 (2011).
  3. Ohta, E., Sato, H., Ando, S., Kosaka, A., Fukushima, T., Hashizume, D., Yamasaki, M., Hasegawa, K., Muraoka, A., Ushiyama, H., Yamashita, K., Aida, T.:
    "Redox-responsive molecular helices with highly condensed pi-clouds"
    Nature Chem. 3, 68-73 (2011).
  4. Nagashima, S., Kamiguchi, S., Ohguchi, S., and Chihara, T.:
    "Gas-Phase Alkylation of Pyridine and Phenol with Alcohols Over Halide Clusters of Group 5-7 Transition Metals as Solid Acid Catalysts"
    J. Cluster Sci., 22, 647-660 (2011).
  5. Suzuki, K., Matsuo, T., Hashizume, D., Fueno, H., Tanaka, K., Tamao, K.:
    "A planar rhombic charge-separated tetrasilacyclobutadiene"
    Science, 331, 1306-1309 (2011).
  6. Jang, J. -H., Asami, Y., Jang, J. -P., Kim, S. -O., Moon, D. O., Shin, K. -S., Hashizume. D., Muroi, M., Saito, T., Oh, H., Kim, B. Y., Osada, H., Ahn, J. S.:
    "Fusarisetin A, an acinar morphogenesis inhibitor from a soil fungus, Fusarium sp. FN080326"
    J. Am. Chem. Soc. 133, 6865-6867 (2011).
  7. Nagashima, S., Kamiguchi, S., Ohguchi, S., and Chihara, T.:
    "Direct synthesis of 3-methylbenzofuran from phenol and acetone over halide cluster catalysts taking advantage of acidic and metallic properties"
    Chem. Eng. J., 161, 384-387 (2010).
  8. Kamiguchi, S., Ikeda, N., Nagashima, S., Kurokawa, H., Miura, H., Chihara, T.:
    "Catalytic Condensation of Primary Amines, Dehydrogenation of Secondary Amines, and Dealkylation of Tertiary Amines over Solid-State Rhenium Sulfide Clusters with an Octahedral Metal Framework"
    J. Cluster Sci., 20, 683-693 (2009).
  9. Okimi, H., Hara, M., Asada, K., Sakaguchi, Y.:
    "The enhancement of the magnetic field effect on the emission intensity of the organic light-emitting diode induced by the operation time"
    Jpn. J. Appl. Phys. 48, 061502 (2009).
  10. Suzuki, N., Hashizume, D., Yoshida, H., Tezuka, M., Ida, K., Nagashima, S., Chihara, T.:
    "Reversible Haptotropic Shift in Zirconocene-Hexapentaene Complexes"
    J. Am. Chem. Soc., 131, 2050-2051 (2009).

Members

Principal Investigator

Yoshio SAKAGUCHI
Team Head

Staff Scientist

Hideki ABE
Senior Research Scientist
Satoshi KAMIGUCHI
Senior Research Scientist
Daisuke HASHIZUME
Senior Research Scientist
Kiyoshi NISHIZAWA
Senior Research Scientist
Keiko YAMADA
Senior Technical Scientist
Chieko KARIYA
Senior Technical Scientist
Keiko SUZUKI
Senior Technical Scientist
Shigeru IKEDA
Senior Research Scientist

Postdoctoral Fellow

Yoko AIDA
Special Fixed Term Contract Employee

Technical Assistant

Miyuki TANAKA
Technical Staff I
Tomoka KIKITSU
Technical Staff I
Daishi INOUE
Technical Staff I