Catalysis and Separations with One Hand

本项目的目标是探索手性金属表面对映选择性化学的基本方面。调查的重点是自然手性表面形成的高米勒指数平面的金属，如铜和铂。这些表面的手性来自于由三个低米勒指数微面相交形成的扭结台阶结构。在这个意义上，这种类型的表面手性不同于通过用手性配体模板化表面的传统方法所赋予的手性。 过去的工作已经探讨了天然手性表面的结构，对映体特异性吸附物的几何形状和对映体特异性表面反应的能量学。手性表面的这些性质决定了催化反应和色谱分离的对映选择性。 所提出的工作侧重于探索自然手性表面的各种结构，使用实验和理论相结合的方法。虽然有无数的手征高米勒指数表面，他们是由有限数量的类型的扭结台阶平台结构。拟议的调查将探讨这组结构的对映体特异性Cu单晶表面上使用手性吸附物，以前表现出对映体特异性的表面化学。教育活动预计将是传统的指导研究生。 拟议的工作的基本目标是提供一个基本的了解的根源对映体选择性的一组高度特征化的，天然手性表面。

The objective of this project is to explore the fundamental aspects of enantioselectivechemistry on chiral metal surfaces. The investigation is focused on naturally chiral surfaces formed from high Miller index planes of metals such as Cu and Pt. The chirality of these surfaces arises from the kink-step-terrace structures that are formed by the intersections of three low Miller index microfacets. In this sense this type of surface chirality is distinct from the chirality imparted by the traditional approach of templating a surface with chiral ligands. Past work has probed the structure of naturally chiral surfaces, enantiospecific adsorbate geometries, and enantiospecific surface reaction energetics. These properties of chiral surfaces determine the enantioselectivities of catalytic reactions and chromatographic separations. The work proposed focuses on the exploration of naturally chiral surfaces of various structures using a combination of experimental and theoretical methods. Although there are an infinite number of chiral high Miller index surfaces, they are composed of a finite number of types of kink-step-terrace structures. The proposed investigation will explore the enantiospecificity of this set of structures on Cu single crystal surfaces by using chiral adsorbates that have previously exhibited enantiospecific surface chemistry. The educational activities are expected to be the traditional mentoring of graduate students. The fundamental goal of the proposed work is to provide a basic understanding of the roots of enantioselectivity on a set of highly characterized, naturally chiral surfaces.