Nanostructure and Spin Dynamics in Photoelectric Conversion SystemBased on Photosynthetic Cyanobacteria

2012 Fiscal Year Final Research Report

• Project/Area Number: 23750002
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Physical chemistry
• Research Institution: Tohoku University
• Principal Investigator: MATSUOKA Hideto 東北大学, 多元物質科学研究所, 助教 (90414002)
• Project Period (FY): 2011 – 2012
• Keywords: たんぱく質 / 磁気共鳴 / 光合成 / バイオスピン

Research Abstract

In this work, bidirectional electron transfer in photosynthetic photosystem I proteins was experimentally observed by using high time-resolved ESR and chemically reduced proteins. In this work, moreover, to realize highly sensitive ESR measurements applicable to a single protein, microsamples applicable to high-frequency ESR were prepared. Using an artificial electron-transfer system as a model compound, we established the procedure for preparing microsamples applicable to a tiny cavity for high-frequency ESR.

Research Products

• [Journal Article] W-band time-resolved electron paramagnetic resonance study of light-induced spin dynamics in copper-nitroxide-based switchable molecular magnets (2012)
  • Author(s): Fedin M.V., Bagryanskaya E.G., Matsuoka H., Yamauchi S., Veber S.L., Maryunina K.Y., Tretyakov E.V., Ovcharenko V.I., Sagdeev R.Z
  • Journal Title: J. Am. Chem. Soc Volume: 134 Pages: 16319-26
  • DOI: DOI:10.1021/ja306467e
  • Peer Reviewed
• [Journal Article] Time-Resolved Electron Paramagnetic Resonance and Phosphorescence Studies of the Lowest Excited Triplet States of Rh(III) Corrole Complexes (2012)
  • Author(s): Tanabe M., Matsuoka H., Ohba Y., Yamauchi S., Sugisaki K., Toyota K., Sato K., Takui T., Goldberg I., Saltsman I., Gross Z
  • Journal Title: J. Phys. Chem. A Volume: 116 Pages: 9662-9673
  • DOI: DOI:10.1021/jp3071037
  • Peer Reviewed
• [Journal Article] Proton-Coupled Electron- Transfer Processes in Photosystem II Probed by Highly Resolved g-Anisotropy of Redox-Active Tyrosine YZ (2011)
  • Author(s): Matsuoka H., Shen J.-R, Kawamori A., Nishiyama K., Ohba Y., Yamauchi S
  • Journal Title: J.Am. Chem. Soc Volume: 133 Pages: 4655-4660
  • DOI: DOI:10.1021/ja2000566
  • Peer Reviewed
• [Presentation] Multifrequency EPR Studies of Photosynthetic Oxygen-Evolving System (2012)
  • Author(s): H. Matsuoka
  • Organizer: 8th Asia-Pacific EPR/ESR Symposium 2012
  • Place of Presentation: 北京(中国)
  • Year and Date: 2012-10-12
• [Presentation] 光合成酸素発生系の多周波ESR研究 (2012)
  • Author(s): 松岡秀人
  • Organizer: 第6回分子科学討論会
  • Place of Presentation: 東大(東京)
  • Year and Date: 2012-09-21
• [Presentation] 光化学系IIにおける酸素発生中心の多周波ESR研究 (2012)
  • Author(s): 松岡秀人
  • Organizer: 2012年光化学討論会
  • Place of Presentation: 東工大(東京)
  • Year and Date: 2012-09-14
• [Presentation] Photosynthetic Oxygen- Evolving System as Studied by Electron Paramagnetic Resonance (2012)
  • Author(s): H. Matsuoka
  • Organizer: International Wrokshop on Solar-Chemical Energy Strage
  • Place of Presentation: 仙台(宮城)
  • Year and Date: 2012-07-28
• [Presentation] Multi-Frequency EPR studies of Mn4CaO5 and Mn4SrO5 Clusters (2012)
  • Author(s): H. Matsuoka
  • Organizer: The 2nd International Symposium on Electron Spin Science
  • Place of Presentation: 松島(宮城)
  • Year and Date: 2012-07-25
• [Presentation] シアノバクテリア光化学系IIにおける酸素発生中心の高周波パルスEPR研究 (2012)
  • Author(s): 松岡秀人
  • Organizer: 第92回日本化学会年会
  • Place of Presentation: 慶応大(東京)
  • Year and Date: 2012-03-26
• [Presentation] 高周波ELDOR-detected NMRのMn錯体への応用 (2011)
  • Author(s): 松岡秀人
  • Organizer: 第50回電子スピンサイエンス学会年会
  • Place of Presentation: 仙台国際センター
  • Year and Date: 2011-11-18
• [Presentation] Multiple Electron Resonance Studies of Photosystem II Reaction Center, V Japanese- Russian Workshop (2011)
  • Author(s): H. Matsuoka
  • Organizer: Open Shell Compounds and Molecular Spin Devices
  • Place of Presentation: 淡路(兵庫)
  • Year and Date: 2011-11-14
• [Presentation] Proton-Coupled Electron Transfer Processes in Photosystem II Probed by Highly Resolved g-Anisotropy of Redox-Active Tyrosine YZ (2011)
  • Author(s): H. Matsuoka
  • Organizer: Spin Physics, Spin Chemistry, and Spin Technology
  • Place of Presentation: カザン(ロシア)
  • Year and Date: 2011-11-02
• [Presentation] 光合成酸素発生反応におけるプロトン共役電子移動の高周波ESR研究 (2011)
  • Author(s): 松岡秀人
  • Organizer: 分子科学討論会2011
  • Place of Presentation: 北大(札幌)
  • Year and Date: 2011-09-21
• [Book] Springer, Molecule-Based Exchange-Coupled High-SpinClusters: Conventional, High-Field/High-Freque ncy and Pulse-Based Electron Spin Resonance of Molecule-Based Magnetically Coupled Systems (2012)
  • Author(s): Takui T., Nakazawa S., Matsuoka H., Furukawa K.., Sato K. , and Shiomi D
  • Total Pages: 71-162
  • Publisher: In EPR of Free Radicals in Solids II