| Effect of Photo-Oxidation on Energy Transfer in Light Harvesting Complex （LH2） from Rhodobacter Sphaeroides 601 |
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| 引用本文： | 刘康俊,刘伟民,闫永丽,董志伟,刘源,徐春和,钱士雄.Effect of Photo-Oxidation on Energy Transfer in Light Harvesting Complex （LH2） from Rhodobacter Sphaeroides 601[J].中国物理快报,2006,23(9):2598-2601. |
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| 作者姓名： | 刘康俊 刘伟民 闫永丽 董志伟 刘源 徐春和 钱士雄 |
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| 作者单位： | [1]Department of Physics, Fudan University, Shanghai 200433 [2]National Key Laboratory of Surface Science, Fudan University, Shanghai 200433 [3]Shanghai Institute of Plant Physiology and Ecology, Shanghai Institute for Biological Sciences, Chinese Academy of Sciences, Shanghai 200032 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant Nos 10274013 and 10374020. |
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| 摘 要： | We study the photo-oxidation of bacteriochlorophylls （BChls） in peripheral light harvesting complexes （LH2） from rhodobacter sphaeroides by using the steady absorption and the femtosecond pump-probe measurement, to realize the detailed dynamics of LH2 in the presence of photo-oxidation. The experimental results reveal that BChl-B850 radical cations may act as an additional channel to compete with the unoxidized BChl-B850 molecules for rapidly releasing the excitation energy, while the B800→B850 energy transfer rate is almost unaffected in the oxidation process.
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| 关 键 词： | 光子氧化 能量传递 光复合 稳定吸收 |
| 收稿时间： | 2006-02-22 |
| 修稿时间： | 2006-02-22 |
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