Photodissociation Studies of Mass-Selected Solvated Cluster Ions

质量选择的溶剂化簇离子的光解离研究

• 批准号: 9122170
• 负责人: James Farrar
• 金额: $ 33.5万
• 依托单位: University of Rochester
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1992
• 资助国家: 美国
• 起止时间: 1992-04-15 至 1995-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9122170&HistoricalAwards=false
• 关键词: Photodissociation; Studies; Mass; Selected; Solvated

In this Experimental Physical Chemistry project, funded by the Chemistry Division, Prof. James Farrar (University of Rochester) will conduct spectroscopic studies of singly and doubly charged ions, prepared by a novel laser vaporization method in clusters with controlled numbers of polar solvent molecules. Combined with ab initio quantum calculations, these experiments will reveal specific features of solvent dependent charge transfer processes. %%% Clusters, in which a molecule is surrounded by only a few weakly associated neighbors, represent a unique state of matter with properties between those of gases and liquids. Prof. Farrar (University of Rochester) has developed a new method of preparing clusters with an electric charge and a closely controlled cluster size, and will use lasers to study how the properties of the cluster change as the number of molecules in the cluster increases. This will provide a beautifully detailed, step-by-step picture of how solvents affect properties of the dissolved material. The results are of fundamental importance to our understanding of how and why solvents influence chemical reactivity.

在这个由化学部资助的实验物理化学项目中，James Farrar教授（罗切斯特大学）将通过一种新的激光汽化方法在极性溶剂分子数量可控的集群中制备单电荷和双电荷离子，并对其进行光谱研究。结合从头算量子计算，这些实验将揭示溶剂相关电荷转移过程的具体特征。在星系团中，一个分子周围只有几个弱关联的邻居，它代表了一种介于气体和液体之间的物质的独特状态。Farrar教授（罗彻斯特大学）已经开发了一种新的方法来制备带有电荷的团簇，并严格控制团簇的大小，并将使用激光来研究团簇的性质如何随着团簇中分子数量的增加而变化。这将提供一个精美的详细，一步一步的图片，溶剂如何影响溶解材料的性质。这些结果对我们理解溶剂如何以及为什么影响化学反应性具有重要意义。