Dynamics of Electronically Excited States. Models for Chemical Reactivity

电子激发态的动力学。

• 批准号: 9224398
• 负责人: David Pratt
• 金额: $ 38.27万
• 依托单位: University of Pittsburgh
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1993
• 资助国家: 美国
• 起止时间: 1993-02-15 至 1996-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9224398&HistoricalAwards=false
• 关键词: Dynamics; Electronically; Excited; States.; Models

In this project by Prof. David Pratt of the University of Pittsburgh, the Physical Chemistry Program of the Chemistry Division supports experimental research on fundamental questions concerning the structures and forces at work in weakly bound complexes, mechanisms of intramolecular energy flow, and chemical reaction pathways. By means of high resolution ultraviolet spectroscopy the properties of excited electronic states are determined and questions of the dynamics of chemical reactions are addressed. %%% Understanding the fundamentals of chemical reactions on a molecular level is at the current frontier of physical chemistry. Once a molecule is enriched with high vibrational and electronic energy, it can shed this energy in a reactionless process, it can dissociate into fragments, or it can react with other molecules to form new ones. If the details of these individual processes are known and understood, reactions could be steered into preferred directions. The determination of such detailed, molecular level understanding for species of chemical interest is the goal of this research project.

在匹兹堡大学 David Pratt 教授的这个项目中，化学系的物理化学项目支持对弱结合配合物中的结构和作用力、分子内能量流机制和化学反应途径等基本问题的实验研究。 通过高分辨率紫外光谱，可以确定激发电子态的性质，并解决化学反应动力学问题。 %%% 在分子水平上理解化学反应的基本原理是当前物理化学的前沿。 一旦分子富含高振动和电子能量，它就可以在无反应的过程中释放出这种能量，它可以解离成碎片，或者可以与其他分子反应形成新的分子。 如果知道并理解这些单独过程的细节，就可以将反应引导至优选的方向。 确定对化学感兴趣的物种的这种详细的分子水平理解是该研究项目的目标。