Structure, dynamics and reactivity at surfaces and interfaces

我们研究计划的重点是提供表面和界面结构、动力学和化学反应的微观视图。表面和界面为化学提供了一个独特的环境。表面过程的反应速度和机理通常与其他环境中非常不同。但不幸的是，表面和界面天生就很难研究，因此在分子水平上对表面过程的细节知之甚少。我们的方法一直在利用现有的和发展中的新的非线性光学技术来探测界面环境。这些方法的补充是使用扫描探针显微镜和其他表征方法，以提供分子水平和宏观表面属性之间的联系。我们的研究工作一直集中在理解与界面科学相关的基本问题，以及它们在更广泛的表面和材料科学界感兴趣和重要的问题上的应用。我们建议(I)在一系列表面和界面上进行基础光谱和动力学实验，以帮助更多地了解环境及其如何影响分子取向、相互作用和反应(Ii)开发新的非线性光学技术，以提供关于这些环境的新信息，以及(Iii)应用这些技术和其他技术来帮助我们了解聚合物薄膜的性质，并深入了解高有序聚合物薄膜中的载流子注入和迁移率过程。这一认识将有助于提高有机电子、发光二极管和光伏的性能。

The focus of our research program is to provide a microscopic view of surface and interface structure, dynamics and chemical reactivity.  Surfaces and interfaces provide a unique environment for chemistry.  Reaction rates and mechanisms for surface processes are typically very different than in other environments.  Unfortunately, surfaces and interfaces are inherently difficult to investigate, so comparatively little is known about the details of surface processes on the molecular level. Our approach has been in the use of existing and the development of new nonlinear optical techniques to probe interface environments. These methods are complemented by the use of scanning probe microscopies and other characterization methods to provide a link between the molecular level and macroscopic surface properties. Our research efforts have been focused on the understanding of fundamental issues associated with interface science, as well as their application to problems of interest and importance to the broader surface and materials science communities. We propose to (i) perform fundamental spectroscopy and dynamics experiments on a range of surfaces and interfaces to help understand more about the environment and how it affects molecular orientation, interaction and reaction(ii) develop new nonlinear optical techniques to provide new information about these environments and (iii) Apply these and other techniques to help us understand the properties of polymer thin films and to provide insight into the processes of charge carrier injection and mobility in highly ordered polymer films. This understanding will help to improve the performance of organic-based electronics,light emitting diodes,and photovoltaics.