Spin-Resolved Studies of Electron Transfer at Electrode Surfaces

本研究的重点是研究电子自旋在电极表面电子转移中的作用。Klebanoff教授是在分析和表面化学计划赞助的探索研究小额赠款(SGER)下进行这项研究的，他正在努力确定是否可以测量电子自旋效应。均匀磁化的镍单晶电极作为电子的自旋极化源和接受者。顺磁性过渡金属络合离子在酸性溶液中的还原是通过电极的振荡磁化进行的。利用锁定放大器技术，在磁化频率处检测交流分量的还原电流。理解电子在溶液和导电固体中的物种之间转移的机制具有重要的基础和技术意义。在这个项目中，Klebanoff教授正在研究电子自旋的作用，以此作为研究电解过程的可能的新探测器。这种新的探测可能会影响电池和燃料电池作为能源的实际发展。

The focus of this research project is to study the role of electron spin in electron transfer at electrode surfaces. Professor Klebanoff, who is doing the research under a Small Grant for Exploratory Research (SGER) sponsored by the Analytical and Surface Chemistry Program, is working to determine if electron spin effects can be measured. A uniformly magnetized nickel single-crystal electrode serves as a spin polarized source and acceptor of electrons. The reduction of a paramagnetic transition metal complex ion in acidic solution proceeds with an oscillatory magnetization of the electrode. Using lock-in amplifier technology, the reduction current is examined for an alternating current component at the frequency of the magnetization. An understanding of the mechanisms by which electrons are transferred between species in solution and electrically conducting solids is of both fundamental and technological importance. In this project, Professor Klebanoff is investigating the role of electron spin as a possible new probe for the study of electrolytic processes. Such a new probe might impact on the practical development of batteries and fuel cells as energy sources.