US-Turkey Cooperative Research: Synchrotron X-Ray Photoemission Studies of Spherosiloxanes and Alkylsilanes on Gold

0096583Banaszak Holl描述：该奖项是为了支持密歇根州安娜堡市密歇根大学化学系Mark M Banaszak Holl教授和土耳其安卡拉比尔肯特大学化学系Sefik Suzer博士的合作项目。他们计划通过同步加速器x射线光电发射光谱（SXPS）实验，探索金表面上H8Si8O12和H10Si10O15簇单层的结构和反应性。发现这些团簇可以在金表面形成单层，显然是通过20℃下温和的Si-H活化途径形成的，这是一个令人惊讶的结果。高分辨率、高表面灵敏度的同步加速器表征与完全可以在超高真空条件下制备的系统相结合，为获得这种基于簇的单层系统的详细结构信息提供了独特的机会。两位科学家最近还发现，在这些条件下，其他的Si-H键，特别是烷基硅烷的Si-H键，也很容易与金表面发生反应。这使得烷基硅烷基单分子膜的制备与近年来广泛研究和应用的重要的烷硫醇基体系密切相关。这些系统的SXPS特性是至关重要的。在这个项目中，合作者计划将他们的专业知识结合到一项重要的科学研究中。两位科学家的专业知识是互补的，将在国家同步加速器光源（NSLS）和布鲁克海文国家实验室使用设备。密歇根大学有一个强大的SXPS项目。土耳其PI是一位国际上杰出的表面科学家，密歇根大学的研究生将从他在光束线和密歇根实验室的工作中受益。美国PI将由DMR和CHE推荐的单独拨款DMR-0093641支持。该项目符合国际情报机构支持互利合作项目的标准。

0096583Banaszak Holl Description: This award is for support of a cooperative project by Professor Mark M Banaszak Holl, Department of Chemistry, the University of Michigan, Ann Arbor, Michigan and Dr. Sefik Suzer, Chemistry Department, Bilkent University, Ankara, Turkey. They plan to explore the structure and reactivity of H8Si8O12 and H10Si10O15 Cluster monolayers on gold surfaces, by conducting synchrotron X-ray Photoemission Spectroscopy (SXPS) experiments. The discovery that these clusters can form monolayers on gold surface, apparently via a mild Si-H activation route at 20-degree C was a surprising result. The combination of high-resolution, high surface sensitivity synchrotron characterization and a system, which can be prepared entirely under ultrahigh vacuum conditions, provides a unique opportunity to obtain detailed structural information about this type of cluster-based monolayer system. The two scientists have also recently discovered that other Si-H bonds, particularly those of alkylsilanes, also react readily with gold surfaces under these conditions. This allows the preparation of alkylsilane-based monolayers that are closely related to the important alkanethiol-based systems that have seen such extensive study and application in recent years. SXPS characterization of these systems is critical.Scope: In this project the collaborators plan to combine their expertise in an important scientific research. The expertise of the two scientists are complementary and the facilities to be used will be at the National Synchrotron Light Source (NSLS) and at the Brookhaven National Laboratory. The U. of Michigan has a strong SXPS program. The Turkish PI is an internationally prominent surface scientist, and the graduate students from the U. of Michigan will benefit from working with him at the beamline and in the Michigan laboratories. The US PI will be supported under a separate grant, DMR-0093641, being recommended by DMR and CHE. The project meets INT criteria for support of cooperative projects that are mutually beneficial.