Structure and Dynamics in Surface Reactions

这个项目致力于在分子水平上理解固体表面上的化学反应过程，主要主题是无机表面上的有机部分。本课程将利用扫描隧道显微镜系统地研究有机单层结构的形成，特别是手性单层结构的形成。吸附温度、吸附链长和官能度的变化，以及混合吸附的溶剂共吸附和竞争共吸附的影响，将被用来探索结构形成的能量学。分子在矿物表面的吸附与生命系统中的分子进化和同质性问题有关。硅表面多层结构的研究将扩大，使用有机金属和有机耦合路线来构建这些层。多层结构将通过振动光谱(高分辨率电子能量损失光谱和红外椭圆偏振光谱)在超高电压和环境条件下进行检测。最后，有机单层缓蚀剂在铁表面的热稳定性和分解机理将使用超高真空光谱分析和电化学分析相结合的方法进行研究。普林斯顿大学的安德鲁·博卡斯利和史蒂文·贝尔纳塞克教授得到了有机化学和高分子化学项目的支持，目的是从分子水平上了解固体表面的化学反应过程，主要主题是无机表面的有机部分。功能化的硅和金属表面对于微电子和分子电子学的应用越来越重要。这项工作将提供有关有机单分子膜和薄膜的结构和反应性的基本信息。这些结果可能有助于回答有关生命系统手性发育的问题。这项工作的信息可能对手性分离介质和手性活性催化剂的设计有用。对半导体表面修饰的基本了解将有助于分子电子器件的发展。了解缓蚀剂的吸附和分解化学有助于设计在电子材料和结构材料中应用的改进型缓蚀剂分子。除了通过这项基础研究获得的基本知识外，从高中到博士后研究员的学生将通过参与这项工作的各个方面来接受研究艺术方面的培训。

This project addresses the development of a molecular-level understanding of chemical reaction processes on solid surfaces, with a major theme being organic moieties on inorganic surfaces. The formation of organic monolayer structures will be systematically studied, with particular emphasis on the formation of chiral monolayers, using STM. Variations in adsorption temperature, adsorbate chain length and functionality, and the effect of solvent coadsorption and competitive coadsorption of mixed adsorbates, will be used to probe the energetics of structure formation. Adsorption of molecules on mineral surfaces relevant to the questions of molecular evolution and homochirality in living systems will be addressed. Studies of multilayer architectures on silicon surfaces will be expanded, using organometallic and organic coupling routes to construct these layers. Multilayer architectures will be examined by vibrational spectroscopy (high resolution electron energy loss spectroscopy and infrared spectroscopic ellipsometry), both in UHV and under ambient conditions. Finally, the thermal stability and decomposition mechanisms of organic monolayer corrosion inhibitors on iron surfaces, will be studied using a combination of UHV spectroscopic and electrochemical analysis methods.Professors Andrew Bocarsly and Steven Bernasek of Princeton University are supported by the Organic and Macromolecular Chemistry Program for studies with the goal of obtaining a molecular-level understanding of chemical reaction processes on solid surfaces, with a major theme being organic moieties on inorganic surfaces. Functionalized silicon and metal surfaces are of growing importance for micro- and molecular-electronics applications. This work will provide fundamental information about the structure and reactivity of organic monolayers and thin films. These results may help to answer questions about the development of chirality in living systems. Information from this work may be useful in the design of chiral separations media and chirally active catalysts. A fundamental understanding of semiconductor surface modification will be useful in the development of molecular electronic devices. An understanding of corrosion inhibitor adsorption and decomposition chemistry may be useful in designing improved inhibitor molecules with applications in electronic materials and structural materials corrosion inhibition. In addition to fundamental knowledge gained by this basic research, students ranging from high school to postdoctoral fellows will be trained in the art of research by involvement in various aspects of this work.