▎ 摘　　要

A simple method of producing high quality few-layer graphene (FLG) electrodes (< 5 nm thick) has been described and the in situ infrared measurements of the FLG/1-ethyl-3-methylimidazolium tetrafluoroborate system have been reported. Ideal polarizability of the system has been established and three different spectral modes have been discussed in order to provide a varied understanding of both the electronic and structural effects at the interface. The method of in situ electroreflectance spectroscopy has been extended to the study of FLG vertical bar ionic liquid interface, providing new information about the method and possibilities for future studies of specific adsorption and electronic structure of the interface. Plasmonic enhancement of the spectra has been demonstrated, providing excellent opportunities for the study of the electric double layer and infrared sensors. (C) 2014 Elsevier B.V. All rights reserved.