A Novel Method for the Study of Photochemical Reactions using a Combination of Stark and Raman Spectroscopies

结合斯塔克光谱和拉曼光谱研究光化学反应的新方法

• 批准号: 9410546
• 负责人: Linda Peteanu
• 金额: $ 1.8万
• 依托单位: Carnegie-Mellon University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1994
• 资助国家: 美国
• 起止时间: 1994-08-01 至 1996-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9410546&HistoricalAwards=false
• 关键词: Novel; Method; Study; Photochemical; Reactions

In this project in the Physical Chemistry program of the Chemistry Division, Prof. L. Peteanu of the Carnegie-Mellon University will explore the possibilities of a combined Stark-Raman effect to investigate vibrational mode couplings in the neighborhood of the curve crossings of excited electronic states. The Stark-Raman technique would provide an ability to determine the effect of an (external) electric perturbing field on the vibrational displacements in the excited states of photochemically active molecules. Previous attempts to observe the influence of an externally impressed field on the Raman spectrum of a molecule were unsuccessful and this field has lain dormant for more than 40 years. The present research is to explore this essentially unknown field. With the superior theoretical and experimental techniques that are now available, there are valid expectations that a new area of molecular spectroscopy will be developed. If sucessful, the Stark-Raman technique will be useful in situations where the usual techniques of infrared absorption and resonance Raman spectroscopy are inadequate.

在这个项目中的物理化学程序的化学 师，L教授。佩吉-梅隆大学的佩泰亚努将探索 斯塔克-拉曼效应的可能性， 振动模式耦合的曲线交叉点附近的 激发电子态 斯塔克拉曼技术将提供一个 确定（外部）电扰动影响的能力 场对激发态振动位移的影响 光化学活性分子。 以前试图观察外部印象的影响， 场对分子的拉曼光谱的影响是不成功的， 这个领域已经沉寂了40多年。 目前的研究是 去探索这个未知的领域 与上级理论 和实验技术，现在可用，有有效的 期望分子光谱学的一个新领域将得到发展。 如果成功的话，斯塔克拉曼技术将在以下情况下有用： 通常的红外吸收和共振拉曼技术 光谱是不够的。