Femtosecond Nonlinear Spectroscopic Studies of Chemical Reactions in Condensed Phases

这个启动赠款奖给科罗拉多大学将支持 大卫教授的研究。乔纳斯 研究的主题是 使用飞秒激光的多脉冲非线性光谱学， 解析分子无特征光谱下的动力学， 凝聚相，并准备和研究热过渡态 激活化学反应。 将开展三个项目，第一个 是飞秒，三脉冲实验，旨在时间分辨运动 在热激活化学反应的过渡态上。 第二个是电子退相的外差光子回波研究， 谱线增宽 第三是光合作用的泵浦-探测研究 能量转移 这项研究将推进对热如何影响的基本理解。 激活反应的工作，以及对能量转移的理解 光合作用中短距离的激子相互作用

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