Vibrational Dynamics & Spectroscopy in the Gas Phase and in Superfluid Helium Droplets: Molecules, Radicals, Clusters and Metal Complexes

振动动力学

• 批准号: 9987740
• 负责人: Roger Miller
• 金额: $ 58.6万
• 依托单位: University of North Carolina at Chapel Hill
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 2000
• 资助国家: 美国
• 起止时间: 2000-04-15 至 2005-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9987740&HistoricalAwards=false
• 关键词: Vibrational; Dynamics; & Spectroscopy; Gas

Professor Roger Miller of the University of North Carolina at Chapel Hill is funded by the Experimental Physical Chemistry program to perform experimental studies on clusters in superfluid helium droplets. It was recently discovered that superfluid helium is the most homogeneous condensed phase medium. Miller is among the first to utilize this knowledge to conduct spectroscopic measurements at very high resolution on molecules within this medium. Miller has discovered novel cluster structures that form from small molecules such as cyanoacetylene and water in these droplets. The present work extends the helium droplet spectroscopy for novel synthetic uses, for the study of pre-reactive free radicals such as O, H, OH, and CN, for the study of molecules bound to metal clusters, and for the study of solvation of small molecules.Continued exploration of molecular aggregation in liquid helium droplets will play an important role for assessing the opportunities to extend this new self assembly method to larger scale growth processes in bulk liquid helium. Novel cluster synthesis provides valuable data for theorists who attempt to model behavior of molecules such as water in aggregate form. Modeling water and solvation is an important goal for more accurate calculations of biological systems and drug design.

查佩尔山的北卡罗来纳州大学的罗杰米勒教授受到实验物理化学计划的资助，对超流氦液滴中的团簇进行实验研究。 最近发现超流氦是最均匀的凝聚相介质。 米勒是第一个利用这一知识进行光谱测量在非常高的分辨率上的分子在这种介质中。 米勒发现了新颖的簇结构，这些簇结构是由小分子如氰基乙炔和这些液滴中的水形成的。 目前的工作扩展了氦滴光谱的新的合成用途，用于研究预反应自由基，如O，H，OH和CN，用于研究与金属簇合物结合的分子，对液氦液滴中分子聚集的继续探索将对评估将这种新的自组装方法扩展到更大的范围的机会起重要作用。散装液氦中的尺度生长过程。 新颖的簇合成为试图模拟分子行为的理论家提供了有价值的数据，例如以聚集体形式存在的水。 模拟水和溶剂化是更精确计算生物系统和药物设计的重要目标。