Total Internal Reflection Second Harmonic Generation from the Interface Between Two Immisicible Electrolyte Solutions.

Abstract

Total internal reflection second harmonic generation (TIR SHG) is used to investigate the interface between two immisicible electrolyte solutions (ITIES) under potential control. The observed potential dependent second harmonic response is attributed to a resonance enhanced process arising from the tetraphenylborate (TPB) ion. As the aqueous phase is biased positive of he organic phase, a large increase in the SH response is observed and is attributed to the desorption of the TPB ion at the interface. The potential dependent SH data allows for the determination of the TPB anion concentration at the interface. TIR SHG compliments measurements of the surface excess and can function as a means of measuring the relative concentration of electrolyte species responsible for the potential drop across the electrochemical double layer. jg

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Document Details

Document Type
Technical Report
Publication Date
Jun 12, 1995
Accession Number
ADA295480

Entities

People

  • Geraldine L. Richmond
  • John C. Conboy

Organizations

  • University of Oregon

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Absorption
  • Absorption Spectra
  • Acetonitrile
  • Adsorption
  • Aqueous Solutions
  • Chemistry
  • Demographic Cohorts
  • Electrolytes
  • Frequency
  • Liquids
  • Materials
  • Measurement
  • Photoelectrochemical Cells
  • Reflection
  • Refractive Index
  • Second Harmonic Generation
  • Total Internal Reflection

Readers

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