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Titolo:
INVESTIGATION OF SURFACTANT CONFORMATION AND ORDER AT THE LIQUID-LIQUID INTERFACE BY TOTAL INTERNAL-REFLECTION SUM-FREQUENCY VIBRATIONAL SPECTROSCOPY
Autore:
CONBOY JC; MESSMER MC; RICHMOND GL;
Indirizzi:
UNIV OREGON,DEPT CHEM EUGENE OR 97403 UNIV OREGON,DEPT CHEM EUGENE OR 97403
Titolo Testata:
Journal of physical chemistry
fascicolo: 18, volume: 100, anno: 1996,
pagine: 7617 - 7622
SICI:
0022-3654(1996)100:18<7617:IOSCAO>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
RESONANCE RAMAN-SPECTRA; 2ND HARMONIC-GENERATION; LANGMUIR-BLODGETT-FILMS; H STRETCHING REGION; NORMAL-ALKYL CHAINS; MOLECULAR-ORIENTATION; POLYMETHYLENE CHAIN; ENERGY RELAXATION; SOLID INTERFACES; ACRIDINE-ORANGE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
52
Recensione:
Indirizzi per estratti:
Citazione:
J.C. Conboy et al., "INVESTIGATION OF SURFACTANT CONFORMATION AND ORDER AT THE LIQUID-LIQUID INTERFACE BY TOTAL INTERNAL-REFLECTION SUM-FREQUENCY VIBRATIONAL SPECTROSCOPY", Journal of physical chemistry, 100(18), 1996, pp. 7617-7622

Abstract

The conformational order of sodium dodecyl sulfate (SDS) adsorbed at the D2O-CCl4 interface has been examined by total internal reflection sum-frequency vibrational spectroscopy. A change in conformation of the alkyl chain with increased surface coverage at the liquid-liquid interface is observed. A series of aqueous surfactant concentrations havebeen examined in order to determine the effect of surface coverage onthe conformation of the alkyl chains at the interface. Polarization studies indicate that, for the concentration range examined, the symmetry axis of the terminal methyl group on the alkyl chain is oriented primarily along the surface normal. Identification of spectral features in the C-H region of the infrared region is facilitated by examinationof the sum-frequency spectrum from an analogous deuterated compound.

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Documento generato il 02/04/20 alle ore 08:26:35