Observation and Molecular Ordering at the Liquid-Liquid Interface by Resonant Sum Frequency Generation.

Abstract

The vibrational spectrum of an amphiphilic surfactant, sodium dodecyl sulfate (SDS) at the interface between two immisicible liquids, D2O/CCl4, has been obtained for the first time by resonant sum frequency generation. The vibrational spectra obtained offer spectroscopic evidence for interfacial ordering of the alkyl chain as a function of surface coverage. Analysis of the ratio of the methyl/methylene peak intensities as a function of bulk aqueous phase concentration of SDS suggests that unlike the liquid-air and solid-liquid interfaces SDS is considerably more disordered at the liquid-liquid interface. jg

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Document Details

Document Type
Technical Report
Publication Date
Jun 12, 1995
Accession Number
ADA295484

Entities

People

  • Geraldine L. Richmond
  • John C. Conboy
  • Marie C. Messmer

Organizations

  • University of Oregon

Tags

DTIC Thesaurus Topics

  • Carbon Tetrachloride
  • Chemical Compounds
  • Chemistry
  • Demographic Cohorts
  • Diffraction
  • Frequency
  • Information Operations
  • Intensity
  • Methylenes
  • Military Research
  • Molecules
  • Monomolecular Films
  • Observation
  • Resonance
  • Spectra
  • Surface Active Substances
  • Vibrational Spectra

Fields of Study

  • Chemistry

Readers

  • Analytical Chemistry
  • Materials Science and Engineering.
  • Quantum Chemistry