Presidential Young Investigator: Surface Organometallic Chemistry in Catalysis and Microelectronics

研究了金属团簇的化学和物理性质，特别是它们与非均相催化、陶瓷粉末的合成和金属-半导体界面的形成有关。涉及三个方面。研究了有机钨配合物对一氧化碳加氢反应的催化活性及其载体和促进剂的作用。氢和一氧化碳在极小的（5-50个原子）金属簇簇上的化学吸附研究了簇簇大小和形状的函数。反应性有机金属配合物在磷化铟清洁表面上的反应将作为微电子应用中低缺陷界面的途径进行研究。使用了多种技术，包括温度程序反应（TPR）和扩展x射线吸收精细结构（EXAFS）。这项研究与高科技陶瓷的生产、新催化工艺的开发以及高质量微电子器件的生产有关。它也与非常小的有组织的簇（有时称为纳米结构）的生产和应用的更普遍的问题有关。

The chemistry and physics of metal clusters are studied, especially as they relate to heterogeneous catalysis, synthesis of ceramic powders, and genesis of metal- semiconductor interfaces. Three areas are addressed. The catalytic activity of organotungsten complexes toward hydrogenation of carbon monoxide is studied as a function of support and promoter. Chemisorption of hydrogen and of carbon monoxide on very small (5-50 atoms) clusters of Group VIII metals is investigated as a function of cluster size and shape. The reactions of reactive organometallic complexes on clean surfaces of indium phosphide will be investigated as a route to low-defect interfaces for microelectronic applications. A variety of techniques are used including temperature-programmed reaction (TPR) and extended X-ray absorption fine structure (EXAFS). This research is relevant to the production of high-technology ceramics, the development of new catalytic processes, and the production of high-quality microelectronic devices. It is also pertinent to the more general problem of the production and application of very small organized clusters, sometimes called nanostructures.