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.

在化学系物理化学项目的这个项目中，卡内基梅隆大学的 L. Peteanu 教授将探索组合斯塔克-拉曼效应的可能性，以研究激发电子曲线交叉点附近的振动模式耦合。州。 斯塔克-拉曼技术将提供确定（外部）电扰动场对光化学活性分子激发态振动位移的影响的能力。 之前曾尝试观察外部施加的场对分子拉曼光谱的影响，但没有成功，该场已休眠了 40 多年。 目前的研究就是探索这个本质上未知的领域。 凭借现有的先进理论和实验技术，人们有理由期望分子光谱学的新领域将会得到发展。 如果成功，斯塔克拉曼技术将在红外吸收和共振拉曼光谱的常用技术不足的情况下发挥作用。