Laser Spectroscopy of Ions and Clusters

离子和团簇的激光光谱

• 批准号: 9424482
• 负责人: Richard Saykally
• 金额: $ 90.25万
• 依托单位: University of California-Berkeley
• 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: 1995-02-01 至 1998-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9424482&HistoricalAwards=false
• 关键词: Laser; Spectroscopy; Ions; Clusters

In this project in the Physical Chemistry program of the Chemistry Division, Prof. Richard Saykally of the Department of Chemistry of the University of California at Berkeley will engage in continuing studies of the structure and dynamics of weakly bound molecular complexes. Special emphasis is paid to the dynamical aspects. The experimental data will be obtained by ultra high resolution laser spectroscopy and their analysis will be accompanied by rigorous theoretical modeling in order to obtain highly detailed intermolecular potential energy surfaces. Specifically, the data from which this information is extracted are vibration-rotation-tunneling (VRT) spectra. Extensions to hydrated proton complexes and amino acid complexes will be made possible by continued developments in the technology of VRT spectroscopy. Since intramolecular interactions are known to be non-additive, the emphasis will be on trimer and higher order complexes. The structure and dynamics of condensed phase matter, other than metals and semiconductors, is largely determined by the weak interactions between strongly bound molecules. This research serves to obtain a better molecular level understanding of the intermolecular interactions that govern the behavior of condensed phase systems, including those of biological importance.

在化学系物理化学项目中，加州大学伯克利分校化学系的Richard Saykally教授将继续研究弱结合分子络合物的结构和动力学。特别强调了动力学方面。实验数据将由超高分辨率激光光谱学获得，其分析将伴随着严格的理论建模，以获得非常详细的分子间势能面。具体地说，从中提取该信息的数据是振动-旋转-隧道(VRT)谱。随着VRT光谱技术的不断发展，水合质子复合体和氨基酸复合体的扩展将成为可能。由于分子内相互作用是已知的非加性作用，因此重点将放在三聚体和更高阶络合物上。除了金属和半导体之外，凝聚相物质的结构和动力学在很大程度上是由强结合分子之间的弱相互作用决定的。这项研究旨在更好地在分子水平上了解控制凝聚相系统行为的分子间相互作用，包括那些具有生物重要性的系统。