Gas-Phase Ionic Chemistry and Spectroscopy

在有机化学和高分子化学项目的支持下，斯坦福大学化学系的John I.Brauman教授开展了气相离子化学和光谱学的研究。通过热力学、反应动力学、电子光分离光谱、红外多光子诱导反应和光学光化学的研究，结合传统光源和激光光源，Brauman教授研究了气相离子性质和反应的光谱、化学和物理方面。通过这些研究，我们了解了离子和高活性中间体的结构和反应性之间的关系，从而能够评估本征效应和溶剂效应对这些物种化学的不同贡献。化学中的一个中心需求是能够理解和预测在化学反应过程中形成的活性中间体的性质和化学。虽然带电荷的分子基团(离子)在许多反应中作为关键中间体发挥着重要作用，但它们的性质受到它们与通常产生它们的介质的相互作用的显著影响，这使得探索它们的化学的实验尝试变得复杂。斯坦福大学化学系的John I.Brauman教授因研究气相离子的结构和反应性而得到有机化学和高分子化学计划的支持，使他能够评估反应介质和它们的内在性质对它们化学的不同贡献。

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.