Photodetachment and Photodissociation of Gas-Phase Cluster Anions

气相团簇阴离子的光脱离和光解离

• 批准号: 9007445
• 负责人: Kit Bowen
• 金额: $ 40.85万
• 依托单位: Johns Hopkins University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-08-15 至 1995-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9007445&HistoricalAwards=false
• 关键词: Photodetachment; Photodissociation; Gas; Phase; Cluster

Dr. Kit Bowen is supported by a grant from the Experimental Physical Chemistry Program to study photodissociation and photodetachment spectroscopy in size-selected gas-phase cluster anions. Chosen clusters are representative, on a microscopic scale, of real macroscopic solvent-solute systems. These studies will provide a wealth of useful information regarding the chemical physics of the solvation process. Bowen plans to apply various spectroscopic tools including photoelectron, photodissociation and photodestruction spectroscopy to probe size-selected gas-phase cluster anions which include anion-neutral complexes, solvated electron-like cluster anions, and metal cluster anions. The planned experiments will map the variation of sequential solvation energies and electron affinities as a function of cluster size as well as the evolution of anionic basicity with increasing degrees of solvation. One emphasis of these studies will be to compare various solvent systems, with water and ammonia cluster anions receiving continued attention and with cluster anions of alcohols, amines, ethers, and xenon being studied spectroscopically for the first time.

Kit Bowen博士得到了实验基金会的资助。 物理化学课程，研究光解离和 尺寸选择气相团簇的光剥离光谱 阴离子。 选择的簇在显微镜下具有代表性。 规模，真实的宏观溶剂溶质系统。 这些 研究将提供大量有用的信息， 溶剂化过程的化学物理学。 Bowen计划应用各种光谱工具，包括 光电子、光解离和光破坏 探测尺寸选择气相团簇阴离子的光谱学 其包括阴离子中性络合物、溶剂化的类电子 簇阴离子和金属簇阴离子。 计划 实验将绘制顺序溶剂化的变化 能量和电子亲合能随团簇大小的变化 以及阴离子碱度随温度升高而变化， 溶剂化的程度。 这些研究的重点之一是 比较各种溶剂系统，与水和氨簇 阴离子继续受到关注， 醇、胺、醚和氙正在研究中 第一次在光谱上。