Studies of Molecular Orientation and Conformation of Mixed Monolayers at Electrode Surfaces by Nonlinear Optics and Vibrational Spectroscopy

这项补助金是在一般领域的分析和表面 化学和液体激光光谱学领域 固体界面。 罗伯特·科恩教授将开发 单分子膜的理论和实验描述 金属电极界面的分子种类。 第二 谐波和和频产生法 由科恩教授开发的将与红外线相结合 分子混合单分子膜的光谱测量 金属上受电化学势控制的物种 电极上 这些研究将有助于更全面地了解 界面分子结构对电子作用 在这些接口上发生的传输过程。 在 此外，该方法将允许更完整的描述 其他液体固体界面的进口在各种 化学和技术过程。 通过结合二次谐波产生（SHG）的开和关 共振分析和响应的理论描述 使用Pople-Pariser-Parr形式主义来描述分子 极化率张量，第一次测量分子 在SHG中进行了定向反应。 科恩教授 将结合红外线来扩展这些测量 反射吸收和和频产生， 表征分子种类的混合单分子层， 晶体电极液体界面。

This grant is in the general area of analytical and surface chemistry and in the subfield of laser spectroscopy of liquid solid interfaces. Professor Robert Corn will develop the theoretical and experimental description of monolayers of mixed molecular species at metal electrode interfaces. The second harmonic generation and sum frequency generation methods developed by Professor Corn will be combined with infrared spectroscopic measurements of mixed monolayers of molecular species controlled by electrochemical potential on a metal electrode. These studies will allow fuller understanding of the role of interfacial molecular structure on electron transfer processes which occur at these interfaces. In addition, the methodology will allow more complete description of other liquid solid interfaces of import in a variety of chemical and technological processes. By combining second harmonic generation (SHG) on and off resonance analysis and theoretical description of the response using Pople-Pariser-Parr formalism to describe the molecular polarizability tensors, the first measurements of molecular orientation response in SHG have been made. Professor Corn will extend these measurements in combination with infrared reflection absorption and sum frequency generation to fully characterize mixed monolayers of molecular species at single crystal electrode liquid interfaces.