Electrode Reactions

本研究项目在分析和表面化学计划的支持下，致力于进一步发展扫描电化学显微镜，以研究液/液界面以及新的有机和无机材料表面的电子转移动力学。德克萨斯大学奥斯汀分校的巴德教授和他的学生最先开发了这种方法。在本项目中，还将使用近场扫描光学显微镜和石英晶体微天平测量来同时研究高空间和时间分辨率的光化学反应和电化学反应。一个新的推力将集中在应用这些方法来表征发生在膜上的电子转移反应。需要能够表征发生在表面上空间隔离位置的电子转移过程的动力学。德克萨斯大学奥斯汀分校的巴德教授和他的学生开创了扫描电化学显微镜的发展，并用它来解决这个问题和其他问题。该项目的一个重点是开发这项技术，用于检测界面和表面的单分子。已经为这些实验准备了纳米尺寸的电极，由于如此小尺寸的电极探测到的尺寸非常小，所以揭示了离散的电子能级。这项工作有一个有价值的基本组成部分，在需要分子尺度分辨率的测量中具有令人兴奋的潜在应用。

This research project supported by the Analytical and Surface Chemistry Program, focuses on the further development of the scanning electrochemical microscope for studying electron transfer kinetics at liquid/liquid interfaces and at the surfaces of new organic and inorganic materials. Professor Bard and his students at the University of Texas at Austin first developed this method. In this project near-field scanning optical microscopy and quartz crystal microbalance measurements will also be employed to simultaneously study photochemical and electrochemical reactions with high spatial and temporal resolution. A new thrust will focus on applying these methods to characterize electron transfer reactions occurring at membranes. There is a need to be able to characterize the kinetics of electron transfer processes that occur at spatially isolated sites on surfaces. Professor Bard and his students at the University of Texas at Austin have pioneered the development of scanning electrochemical microscopy and used it to address this and other problems. One focus of this project is developing this technique for the detection of single molecules at interfaces and surfaces. Electrodes of nanometer dimension have been prepared for these experiments revealing discrete electronic energy levels due to the extremely small dimensions probed by electrodes of such small size. This work has a valuable fundamental component with exciting potential applications in measurements that require molecular scale resolution.