Organic Monolayer Films: Structure-Reactivity Relationshipsat Liquid-Solid Interfaces

本基金资助分析化学和表面化学的一般领域以及液固界面光谱学的子领域。爱荷华州立大学的Marc Porter教授将使用固体表面的单分子薄膜来发展与表面化学反应相关的结构-性质和结构-反应性关系。使用在液固界面合成的电化学活性官能团将允许研究表面pH梯度。光谱学方法将用于探测在铂和金电极表面的自组装噻吩键。表面红外、光谱电化学和表面增强拉曼光谱将用于研究单层界面官能团的反应性和转变。探针分子将用于确定哈米特线性自由能关系。将构建垂坠反应官能团（羧酸、胺、酯和醌）的空间取向阵列，并探讨包装密度、取向和组成对反应性的影响。电化学参数也将作为控制反应性和结构的手段。

This grant is in the general field of analytical and surface chemistry and in the subfield of spectroscopy of liquid solid interfaces. Professor Marc Porter of Iowa State University will use monomolecular films at solid surfaces to develop structure-property and structure-reactivity relationships relevent to surface chemical reactions. The use of electrochemically active functional groups specifically synthesized at the liquid-solid interface will allow the study of surface pH gradients. Optical spectroscopic methods will be used to probe the self assembled thiophenyl linkages at platinum and gold electrode surfaces. Surface infrared, spectroelectrochemistry and surface enhanced Raman spectroscopy will be used to study the reactivity and transformation of functional groups at the monolayer interface. Probe molecules will be used to determine Hammett linear free energy relationships. Spatially oriented arrays of pendant reactive functional groups (carboxylic acids, amines, esters and quinones) will be constructed and the effects of packing density, orientation and composition on reactivity will be explored. Electrochemical parameters will also be explored as a means to control reactivity and structure.