表面等离子体共振技术在电化学反应过程研究中的应用

Surface Plasmon Resonance Spectroscopy and Its Applications for the Studies on Electrochemical Processes

简述了表面等离子体共振(SPR)的基本原理,并综述了表面等离子体共振技术在电化学反应过程中的应用。SPR技术可以无需任何标记原位实时地检测分子间的相互作用,也可用于连续监测吸附/脱附和缔合/解离过程。表面等离子共振光谱(SPRS)与电化学技术结合可用来同时表征和处理电极/溶液的界面,在电化学掺杂/去掺杂过程、吸附/脱附反应的研究、痕量物质的检测、薄膜厚度、介电常数的测定等方面的应用已取得了很大的进展。

The principle of surface plasmon resonance （SPR） is briefly introduced and its applications for the studies on electrochemical processes are reviewed. The molecular interaction can be monitored by SPR in real time and in situ, without assistance of any labels. It can be used to monitor continuously adsorption and desorption as well as association and dissociation. Surface plasmon resonance spectroscopy （SPRS） has been shown to be a technique of high sensitivity for characterizing ultrathin films at nanoscale. The combination of SPRS with electrochemical techniques for the simultaneous characterization and manipulation of electrode/electrolyte interfaces has been demonstrated. The applications of the SPRS for the studies on electrochemical processes, such as electrochemical doping/dedoping processes, adsorption and diffusion reactions, detection of trace materials, determination of film thickness and dielectric constants, etc, have made great progresses, showing more advantages than the routine techniques.