Vibrational Potential Energy Surfaces and Molecular Structures in Electronic Excited States

电子激发态的振动势能面和分子结构

• 批准号: 9423048
• 负责人: Jaan Laane
• 金额: $ 43.73万
• 依托单位: Texas A&M Research Foundation
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1995
• 资助国家: 美国
• 起止时间: 1995-03-01 至 1999-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9423048&HistoricalAwards=false
• 关键词: Vibrational; Potential; Energy; Surfaces; Molecular

In this project in the Physical Chemistry program of the Chemistry Division, Professor Jan Laane of the Chemistry Department of Texas A&M University will pursue investigations in order to determine the vibrational potential energy surfaces of excited electronic states. The experimental techniques to be employed include fluorescence excitation spectroscopy, sensitized phosphorescence spectroscopy, and two-photon spectroscopy of supersonic jet-cooled molecules. The system species include cyclic and multicyclic molecules, and those with internal rotations or inversions, including various carbonyl compounds and `double molecules`, i.e., those with two closely lying electronic states. Far infrared and Raman spectra will also be recorded in order to help with the determination of the ground electronic state potential energy surface. Molecular-level understanding of molecular properties and behavior depends upon accurate knowledge of the potential energy surfaces of a molecule for its ground and excited electronic states. The research conducted in this project will furnish the requisite data and analyses toward this understanding.

在化学学部物理化学项目中，德克萨斯农工大学化学系的Jan Laane教授将进行研究，以确定激发态电子的振动势能面。实验技术包括荧光激发光谱、敏化磷光光谱和超音速射流冷却分子的双光子光谱。体系种类包括环状和多环分子，以及具有内旋或反转的分子，包括各种羰基化合物和“双分子”，即具有两个紧密相连的电子态的分子。远红外和拉曼光谱也将被记录下来，以帮助确定地面电子状态的势能面。分子水平上对分子性质和行为的理解取决于对分子的基态和激发态的势能表面的准确认识。在这个项目中进行的研究将为这种理解提供必要的数据和分析。