Sum Frequency Generation Spectroscopy and Double-Layer Capacitance Studies of the 1-Butyl-3-Methylimidazolium Dicyanamide−Platinum Interface
The Journal of Physical Chemistry B2006Vol. 110(37), pp. 18481–18491
Citations Over TimeTop 11% of 2006 papers
Abstract
The orientation of the cation and the anion of 1-butyl-3-methylimidazolium dicyanamide at the platinum-liquid interface, using sum frequency generation (SFG) spectroscopy is reported. Sum frequency spectra at two different polarizations and different potentials are recorded, and analysis of polarization-dependent spectra is performed to estimate the orientation of the dicyanamide anion and the alkyl and ring moieties in the cation as a function of the potential applied to the platinum electrode. In addition, cyclic voltammetry and electrochemical impedance spectroscopy are conducted. A model of the double-layer structure at the electrified interface is presented from the analysis of capacitance and SFG data.
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