Geometry and Orientation of Photoinduced Primary Charge-Separated State in the Photosystem II Reaction Center

2015 Fiscal Year Final Research Report

• Project/Area Number: 25288004
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Physical chemistry
• Research Institution: Kobe University
• Principal Investigator: Yasuhiro Kobori 神戸大学, 理学(系)研究科(研究院), 教授 (00282038)
• Co-Investigator(Kenkyū-buntansha): MINO HIROYUKI 名古屋大学, 大学院理学研究科, 准教授 (70300902)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Keywords: 光合成 / 光電荷分離 / 立体構造 / 電子的相互作用 / 電子スピン共鳴法

Outline of Final Research Achievements

We have developed a method to analyze geometries and molecular orientations of photoinduced charge-separated states by detections of the magnetic interactions by using the time-resolved paramagnetic resonance (TREPR) methods. We have employed multi-frequency TREPR spectroscopy to characterize the geometries and the electronic coupling of the photoinduced primary charge-separated states generated in the photosynthetic reaction centers and in the photosystem II reaction center of spinach. We have clarified molecular mechanisms of the efficient charge generations and of the preventions of the energy-wasting charge-recombinations.

Free Research Field

物理化学