Multiphoton Ionization Studies of Clusters of Immiscible Liquids

在化学部物理化学计划的这个项目中，Zwier将使用多光子光谱技术研究苯-水团簇及其离子的单分子分解动力学。所获得的数据将允许从转动包络和关于范德华模的振动信息确定结构信息。主要的努力将集中在附着了1到50个水分子的中性星团上。我们还将探索电离苯-水团簇的光碎裂和光化学研究。非极性碳氢化合物与水之间疏水作用的研究是自然界中最重要的作用力之一，它对蛋白质的构象起着作用。它也是胶束和生物膜形成的中心。目前对由苯和水分子组成的团簇的研究将提供对所涉及的疏水作用力的一些了解，并将提供对决定生物系统构象变化的作用力的更好理解。

In this project in the Physical Chemistry program of the Chemistry Division, Zwier will use multiphoton spectroscopic techniques to study the unimolecular decomposition dynamics of benzene-water clusters and their ions. The data obtained will allow determination of structural information from the rotational envelopes and vibrational information about van der Waals modes. The main effort will focus on neutral clusters with from one to fifty water molecules attached. Photofragmentation and photochemical studies of ionized benzene-water clusters will also be explored. %%% A study of the hydrophobic interaction between non-polar hydrocarbons and water is one of the most important forces in nature which plays a role in the conformations of proteins. It is also central to the formation of micelles and biological membranes. The current study of clusters composed of benzene and water molecules will provide some understanding of the hydrophobic forces involved and will provide a better understanding of forces which determine conformational changes in biological systems.