Femtosecond Nonlinear Spectroscopic Studies of Chemical Reactions in Condensed Phases

凝聚相化学反应的飞秒非线性光谱研究

• 批准号: 9527552
• 负责人: David Jonas
• 金额: $ 3.2万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-08-01 至 1996-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9527552&HistoricalAwards=false
• 关键词: Femtosecond; Nonlinear; Spectroscopic; Studies; Chemical

This starter grant award to the University of Colorado will support the research of Professor David M. Jonas. The theme of the research is the use of multiple pulse, nonlinear spectroscopy using femtosecond lasers to resolve the dynamics underneath the featureless spectra of molecules in condensed phases and to prepare and study transition states for thermally activated chemical reactions. Three projects will be pursued, the first being femtosecond, three-pulse experiments aimed at time-resolving motion across the transition state of thermally activated chemical reactions. The second is heterodyned photon echo studies of electronic dephasing and line broadening. The third is pump-probe studies of photosynthetic energy transfer. The research will advance the fundamental understanding of how thermally activated reactions work, as well as the understanding of energy transfer and excitonic interactions at short distances in photosynthesis

这项授予科罗拉多大学的初学者奖金将支持大卫·M·乔纳斯教授的研究。这项研究的主题是利用飞秒激光的多脉冲、非线性光谱来解析凝聚相中分子无特征光谱下的动力学，并制备和研究热激活化学反应的过渡态。将开展三个项目，第一个是飞秒三脉冲实验，目的是在热激活化学反应的过渡态上进行时间分辨运动。第二种是电子退相和谱线展宽的外差光子回波研究。三是光合作用能量传递的泵浦探测研究。这项研究将促进对热激活反应如何工作的基本理解，以及对光合作用中短距离能量传递和激子相互作用的理解。