U.S.-Korea Cooperative Research: Femtosecond Nonlinear Spectroscopy of Photosynthetic Light Harvesting

美韩合作研究：光合光采集的飞秒非线性光谱

• 批准号: 9723840
• 负责人: Graham Fleming
• 金额: $ 3.11万
• 依托单位: University of Chicago
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-08-01 至 1999-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9723840&HistoricalAwards=false
• 关键词: U.S.; Korea; Cooperative; Research; Femtosecond

9723840 Fleming This award supports a two-year collaborative research project between Dr. Graham Fleming of the University of Chicago and Dr. Minhaeng Cho of Korea University on "Femtosecond Nonlinear Spectroscopy of Photosynthetic Light Harvesting." The goal of the project is to extend current theories of nonlinear spectroscopy, such as the photon echo, to include the influence of molecular dynamics. The three pulse echo peak shift method will be studied theoretically and applied experimentally to bacterial and plant systems to investigate: 1) degree of electronic delocalization, 2) energy transfer mechanisms, and 3) how the couplings of chromaphores to the protein environment influence electronic coupling. The collaboration between Dr. Fleming and Dr. Cho will enable a combined experimental and theoretical study of nonlinear spectroscopy applied to photosynthetic light harvesting. Dr. Fleming's laboratory has the capability of generating experimental data on the bacterial and plant antenna photosynthetic systems, while Dr. Cho has the theoretical expertise to develop the theoretical formalisms and computer codes to model these data. The study is timely because of the rapid advances in the structural biology of photosynthetic systems and in the techniques of nonlinear spectroscopy. It is expected that this study will result in a better understanding of the photosynthetic process and will form the basis for applying nonlinear spectroscopy as a probe of a wide range of chemical and biological dynamics. ***

9723840 Fleming该奖项支持芝加哥大学的Graham Fleming博士和高丽大学的Minhaeng Cho博士为期两年的合作研究项目“光合作用光收集的飞秒非线性光谱”。该项目的目标是扩展当前的非线性光谱学理论，如光子回波，以包括分子动力学的影响。三脉冲回波峰移方法将在细菌和植物系统中进行理论研究和实验应用，以研究：1)电子离域程度；2)能量传递机制；3)发色团与蛋白质环境的耦合如何影响电子耦合。弗莱明博士和赵博士之间的合作将使非线性光谱学应用于光合作用光采集的实验和理论研究结合起来。弗莱明博士的实验室有能力生成细菌和植物天线光合系统的实验数据，而赵博士则拥有理论专业知识，可以开发理论形式和计算机代码来模拟这些数据。由于光合系统结构生物学和非线性光谱学技术的迅速发展，这项研究是及时的。该研究将有助于更好地理解光合作用过程，并为应用非线性光谱学作为广泛的化学和生物动力学探针奠定基础。＊＊＊