Gas Phase Ion Chemistry

在这个项目中，在物理化学计划的化学部，教授迈克尔T。加州大学圣巴巴拉分校化学系的鲍尔斯将在气相离子化学领域，特别是过渡金属离子的离子色谱法领域进行一系列持续的研究，并将开始新的工作确定生物分子的形状在气相中。 第一行物种的离子化学的早期工作现在将扩展到第二行，这些涉及铁，钴，镍离子与丙烷反应;过渡金属离子的集群氢;集群辅助σ键激活;和碳基集群和过渡金属复合材料的研究。 过渡金属离子化学是当代物理化学的前沿领域之一。 由于过渡金属在催化中的关键作用，这一领域的基础工作具有重要意义。 与此相关的是过渡金属碳复合材料的形成和结构的机制问题，因为它们可能在技术上有用。 许多生物分子的功能和活性程度被认为与它们的结构密切相关。 确定生物分子在气相中的结构，即，因此，不受环境影响的自由分子对于提供基准数据用于开发将其结构和活性相关联的量子力学模型是重要的。 在这个项目中所做的研究将有助于更好地了解这些问题，从而有助于将这些知识应用于技术问题。

In this project in the Physical Chemistry program of the Chemistry Division, Prof. Michael T. Bowers of the Chemistry Department of the University of California at Santa Barbara will engage in a continuing series of investigations in the field of gas phase ion chemistry, specifically ion chromatography of transition metal ions, and will start new work on the determination of the shape of bio-molecules in the gaseous phase. Earlier work on the ion chemistry of first row species will now be extended to the second row, these involving iron, cobalt, and nickel ions reacting with propane; the clustering of transition metal ions to hydrogen; cluster assisted sigma-bond activation; and studies of carbon based clusters and of transition metal composites. The chemistry of transition metal ions is one of the forefront areas of contemporary physical chemistry. Fundamental work in this field is of great importance owing to the critical role played by transition metals in catalysis. Related to this are questions of the mechanism of the formation and structure of transition metal carbon composites owing to their possible technological usefuleness. The function and the degree of activity of many biological molecules are believed to be intimately related to their structure. The determination of the structure of bio-molecules in the gas phase, i.e., free molecules unperturbed by effects of an environment, is therefore of importance for providing bench mark data for the development of quantum mechanical models that relate their structures and activities. The research done in this project will contribute to a better understanding of these issues and thereby assist in the application of this knowledge to technological problems.