Molecular Level Effects for Simple Electrode Reactions at Well Defined Polarizable Electrodes

加州大学戴维斯分校的w·罗纳德·福塞特教授正在进行实验工作，以阐明界面电化学中的分子效应。他的项目是开发微米尺度单晶表面生长和分离的新方法，使研究非常快的电子转移反应的双层效应成为可能，这些反应的动力学可能无法在宏观尺度的电极上测量。高频伏安技术被应用于研究与界面结构和溶剂的电荷和重组有关的电子转移的限制。强调了溶液中复杂离子的反应和欠电位沉积过程。此外，正在进行量子化学计算来评估多原子反应物内的电荷分布，以改进对双层校正幅度的评估。其他正在研究的领域包括在二价离子存在下的双层结构和自组装单层修饰电极的扩散层特性。福西特小组取得的进展为支持多相电子转移的研究贡献了新技术。这些反应影响了广泛的过程，包括腐蚀、金属沉积、能量转换和化学传感器的操作。

Professor W. Ronald Fawcett of the University of California-Davis is performing experimental work to elucidate molecular effects in interfacial electrochemistry. His project is developing new methods for the growth and isolation of micron-scale single crystal surfaces that are enabling the study of double layer effects on very fast electron transfer reactions whose kinetics may not be measured at electrodes of macroscale dimensions. High frequency voltammetry techniques are being applied to investigate limitations to electron transfer related to interfacial structure and charge and reorganization of solvent. Reactions involving complex ions in solution and underpotential deposition processes are emphasized. In addition, quantum chemical calculations are being performed to evaluate the charge distribution within polyatomic reactants for improved assessment of the magnitude of double layer corrections. Other areas under study include double layer structure in the presence of divalent ions and diffuse layer properties at self assembled monolayer modified electrodes. Advances being made by the Fawcett group are contributing new techniques to support investigations of heterogeneous electron transfer. These reactions impact a broad range of processes, including corrosion, metal deposition, energy conversion and the operation of chemical sensors.