| Project/Area Number |
22654051
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Biophysics/Chemical physics
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| Research Institution | Nagoya University |
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Principal Investigator |
MINO Hiroyuki 名古屋大学, 理学研究科, 准教授 (70300902)
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| Project Period (FY) |
2010 – 2012
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| Project Status |
Completed (Fiscal Year 2012)
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| Budget Amount *help |
¥3,200,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥300,000)
Fiscal Year 2012: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2011: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2010: ¥1,900,000 (Direct Cost: ¥1,900,000)
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| Keywords | 化学物理 / パルスEPR / EPR / 量子テレポーテーション / 生体膜 / 光合成 / 電子移動 / パルスESR |
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| Research Abstract |
In order to investigate quantum teleportation between bio-membrane, radical pairs in photosystem II have been tested. To success the purpose, multiple microwave frequencies in the region of 8.5 -10.5 GHz were applied to spin excitation for pulsed electron paramagnetic resonance (EPR). Five different microwave frequencies were fed to the pulse-forming unit in the EPR microwave bridge and used for spin excitation for multiple spin packets. The efficiency of the spin excitation was evaluated by PELDOR measurements of the interaction between tyrosine radical and the manganese cluster in the plant photosystem II. The signal-to-noise (S/N) ratio of the PELDOR spectrum irradiated by five different microwave frequencies was 2.0 times larger than the S/N from a single microwave frequency. The use of mixed microwave frequencies irradiates the different spin packets in the wide EPR spectrum efficiently, thereby improving the S/N ratio of the PELDOR signal in the broad EPR spectrum. Transient EPR signals was detected in photosystem II in the present of donor Mn^2+
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