Water-surfactant contact studied by 19F-1H heteronuclear overhauser effect spectroscopy

¹Laboratoire de Methodologie RMN (UPRESA 7042, FU CNRS E008-INCM), Universite Henri Poincare, Vandoeuvre les Nancy Cedex, F-54506, France.

Journal of Magnetic Resonance (San Diego, Calif. : 1997)

|August 26, 1998

Abstract:

Intermolecular 19F-1H cross-relaxation is measured using heteronuclear Overhauser effect NMR spectroscopy (HOESY) in the micellar solution of cesium pentadecafluorooctanoate. The results are analyzed in terms of a weak 1H-19F cross-relaxation between the water protons and the fluorines in the fluoroalkyl chain and a strong 19F-19F cross-relaxation within the fluoroalkyl chain. The water-surfactant cross-relaxation indicates a water approach to the first CF2 segment in the order of 2.0 A and a short (<

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Abstract:

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