Electrogenerated Chemiluminescence Imaging for Spatially- Resolved in-situ Surface Analysis

本科生研究所(RUI)项目是在分析和表面化学的一般领域和子领域的电化学。这一创新实验计划的目标是开发和实施一种技术，利用该技术可以在空间上绘制电极反应图，并更充分地了解这些过程的效率。恩斯特罗姆教授和他的本科生将使用显微镜收集发光电极反应产生的图像，用位置敏感探测器检测该图像，并使用成像系统绘制电极表面的活动图。这项技术将被用来研究困扰电分析和电镀技术的微电极和大电极上的电流密度不均匀问题，对化学传感器发展至关重要的微电极阵列中的不均匀电流密度，电极表面的微观不均匀，以及导电聚合物膜中的缺陷。该项目的成果应有助于优化电分析装置，并有助于在微观层面上了解电极过程的基本知识。

This Research in Undergraduate Institutions (RUI) project is in the general area of analytical and surface chemistry and in the subfield of electrochemistry. The goal of this innovative experimental program is the development and implementation of a technique with which electrode reactions can be spatially mapped and the efficiency of these processes more fully understood. Professor Engstrom and his undergraduate research students will use a microscope to collect the image produced by a light- emitting electrode reaction, detect this image with a position- sensitive detector, and use an imaging system to map the activity of the electrode surface. This technique will be used to study problems of non-uniform current densities at both micro- and macroelectrodes that plague both electroanalysis and electroplating technologies, non-uniform current densities in microelectrode arrays that are important to the development of chemical sensors, microheterogeniety of electrode surfaces, and defects in conducting polymer films. The results of this project should contribute to the optimization of electroanalytical devices and to fundamental knowledge of electrode processes at the microscopic level.