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Sum Frequency Generation Spectroscopy and Double-Layer Capacitance Studies of the 1-butyl-3-methylimidazolium Dicyanamide-Platinum Interface

Sum Frequency Generation Spectroscopy and Double-Layer Capacitance Studies of the 1-butyl-3-methylimidazolium Dicyanamide-Platinum Interface

Cesar Aliaga, Steven Baldelli

J Phys Chem B. 2006 Sep 21;110(37):18481-91.

PMID: 16970475

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.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP448245521	1-Butyl-3-methylimidazolium dicyanamide		448245-52-1	Price

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