Controlling and Measuring the Local Chemical Environment

宾夕法尼亚州立大学的保罗·S·韦斯教授正在使用一种超稳定的低温扫描隧道显微镜，研究当地化学环境对吸附分子化学的影响。在分析和表面化学计划的支持下，Weiss的团队正在成像和分析表面电子结构在吸附和表面缺陷处的空间相关扰动。利用表征和控制单层膜缺陷的能力，选定的分子被插入到这些缺陷中，以便在这个局部环境中探索这些物种的化学成分。用非弹性电子隧道谱研究了吸附分子的单分子振动光谱，并用扫描探针显微镜和非弹性电子隧道谱研究了吸附分子之间的相互作用。宾夕法尼亚州立大学的维斯教授和他的团队正在使用这些方法来研究当地化学环境对吸附分子化学的影响。这些信息对它为许多重要技术提供的基本见解是有用的，包括分子电子器件、微型传感器和多相催化。

Using an ultrastable low temperature scanning tunneling microscope, Professor Paul S. Weiss of Pennsylvania State University is examining the effects of local chemical environment on the chemistry of adsorbed molecules. With the support of the Analytical and Surface Chemistry Program, Weiss's group is imaging and analyzing spatially dependent perturbations of the surface electronic structure at adsorbates and surface defects. Using the ability to characterize and control defects in monolayer films, selected molecules are inserted into these defects in order to probe the chemistry of these species in this local environment. Single molecule vibrational spectroscopy of the adsorbed molecule is carried out as well, using inelastic electron tunneling spectroscopy.The detailed interactions of adsorbed molecules can be examined using scanning probe microscopy and inelastic electron tunneling spectroscopy. Professor Weiss and his group at the Pennsylvania State University are using these methods to examine the effect of the local chemical environment on the chemistry of adsorbed molecules. This information is useful for the fundamental insights it provides for a number of important technologies, including molecular electronic devices, micro-sensors, and heterogeneous catalysis.