Spectroscopy in Supersonic Molecular Beams

超音速分子束光谱学

• 批准号: 8818321
• 负责人: Donald Levy
• 金额: $ 143.09万
• 依托单位: University of Chicago
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1988
• 资助国家: 美国
• 起止时间: 1988-12-01 至 1993-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8818321&HistoricalAwards=false
• 关键词: Spectroscopy; Supersonic; Molecular; Beams

This research, part of the Experimental Physical Chemistry Program, utilizes supersonic beam techniques and lasers to prepare polyatomic molecules in particular energy states for study. Some of the species to be studied are fundamentally important biochemical building blocks such as amino acids and simple peptides. Spectroscopic studies of simple amino acids and peptides will be used to obtain the geometry of these compounds, and the energetics of the peptide bond. The rates of long-range intramolecular electron transfer in the gas phase will be measured and compared to these rates measured in solution. Laser desorption will be used as a means of generating molecular beams of large, fragile molecules that cannot be vaporized by traditional methods. This process will be studied separately, with particular attention paid to the basic mechanism of laser desorption of large polyatomic molecules.

本研究是实验物理化学的一部分， 程序，利用超声束技术和激光， 制备特定能态的多原子分子， study. 一些待研究的物种基本上 重要的生化构建模块，例如氨基酸和 简单的肽 简单氨基酸和肽的光谱研究将 可以用来获得这些化合物的几何形状， 肽键的能量学。 长期利率 气相中的分子内电子转移将是 测量并与在溶液中测量的这些速率进行比较。 激光解吸将被用作产生 由大而脆弱的分子组成的分子束， 用传统的方法蒸发。 这一进程将 单独研究，特别注意基本的 大分子多原子的激光解吸机制。