Electrochemical Reactions at Ionic Liquid/Gold Interface Probed By Electrochemical Surface Plasmon Resonance
We have found that redox reactions at the IL|Au interface can also be sensitively probed using ESPR when we add redox species such as ferrocene and its derivatives in ILs. Sigmoid curves of the SPR angle are observed during electrode potential scan. We have analyzed the sigmoid curves by simultaneously using a theory and a digital simulation, and have revealed specific interaction between redox species and IL ions depending on their charges.
 N. Nishi, Y. Hirano, T. Motokawa, T. Kakiuchi, Phys. Chem. Chem. Phys. 15 (2013) 11615.