Gas-Phase Ionic Chemistry and Spectroscopy

气相离子化学和光谱学

• 批准号: 9714011
• 负责人: John Brauman
• 金额: $ 83.5万
• 依托单位: Stanford University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1998
• 资助国家: 美国
• 起止时间: 1998-01-01 至 2001-12-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9714011&HistoricalAwards=false
• 关键词: Gas; Phase; Ionic; Chemistry; Spectroscopy

With the support of the Organic and Macromolecular Chemistry Program, Professor John I. Brauman, of the Department of Chemistry at Stanford University, carries out studies of gas-phase ionic chemistry and spectroscopy. Through studies of thermodynamics, reaction dynamics, electron photodetachment spectroscopy, infrared multiple photon induced reactions, and optical photochemistry, using ion cyclotron resonance spectroscopy combined with conventional and laser light sources, Professor Brauman examines the spectroscopic, chemical, and physical aspects of the properties and reactions of ions in the gas phase. Through these studies is gained an understanding of the relationship between structure and reactivity for ions and highly reactive intermediates, permitting an assessment of the separate contributions of intrinsic and solvent effects to the chemistry of these species. A central need in chemistry is the ability to understand and predict the properties and chemistry of reactive intermediates formed in the course of chemical reactions. While molecular groupings bearing charges (`ions`) play an important role as critical intermediates in numerous reactions, their properties are dramatically affected by their interaction with the media in which they are usually generated, complicating experimental attempts to probe their chemistry. Professor John I. Brauman, of the Department of Chemistry at Stanford University, is supported by the Organic and Macromolecular Chemistry Program for his studies of the structures and reactivity of ions in the gas phase, allowing him to assess the separate contributions to their chemistry of the reaction medium and their intrinsic properties.

在有机和高分子化学计划的支持下， 约翰教授斯坦福大学化学系的布劳曼说， 大学，进行气相离子化学的研究， 谱 通过热力学、反应动力学、 电子光剥离光谱，红外多光子诱导 反应和光化学，使用离子回旋共振 光谱学与常规和激光光源相结合， 教授布劳曼审查光谱，化学，和物理 离子在气相中的性质和反应方面。 通过这些研究，我们了解了 离子的结构和反应性之间的关系， 中间体，允许评估单独的贡献， 对这些物质的化学性质的内在和溶剂效应。 化学中的一个核心需求是理解和预测化学反应的能力。 反应过程中形成的活性中间体的性质和化学性质 的化学反应。 当带电荷的分子群 离子（“离子”）在许多化学反应中作为关键中间体发挥着重要作用。 反应，它们的性质受到它们的 与媒体的互动，他们通常产生， 使探索其化学性质的实验变得复杂。 教授 约翰岛斯坦福大学化学系的布劳曼说， 由有机和高分子化学计划支持， 研究气相中离子的结构和反应性， 让他能够评估它们对化学的贡献， 反应介质及其固有性质。