Dynamics of Electronically Excited States. Models for Chemical Reactivity

实验物理化学计划支持 普拉特教授的研究小组在继续调查 大分子有机物的高分辨率电子光谱 分子。 从这些调查中获得的信息是 导致了重要的定量测试和戏剧性的 我们对分子间的理解有了质的提高， 大分子中的能量流 在所研究的3-4 eV的激发能量和 几MHz的光谱分辨率，离散的 受激电子自旋-转动-振动能级 状态被嵌入在更高密度的流形中（或者甚至是 准连续）的水平属于一个或多个较低的 电子国。 这些歧管之间的耦合允许 快速发生化学有趣的过程; 研究试图提取关于这些耦合的信息 从本征态分辨光谱。

The Experimental Physical Chemistry Program supports the research group of Professor Pratt in a continued investigation of high-resolution electronic spectroscopy of large organic molecules. The information gained from these investigations is leading to significant quantitative tests and dramatic qualitative improvements in our understanding of intermolecular energy flow in large molecules. At the studied excitation energies of 3-4 eV and the spectroscopic resolution of a few MHz, the discrete spin-rotation-vibration energy levels of excited electronic states are imbedded in a higher density manifold (or even a quasi-continuum) of levels belonging to one or more lower electronic states. Couplings between these manifolds permit rapid occurrence of chemically interesting processes; the research attempts to extract information about these couplings from eigenstate-resolved spectra.