R. Raulet et al., WATER-SURFACTANT CONTACT STUDIED BY F-19-H-1 HETERONUCLEAR OVERHAUSEREFFECT SPECTROSCOPY, Journal of magnetic resonance [1997], 133(2), 1998, pp. 324-329
Citations number
31
Categorie Soggetti
Physics, Atomic, Molecular & Chemical","Biochemical Research Methods
Intermolecular F-19-H-1 cross-relaxation is measured using heteronucle
ar Overhauser effect MMR spectroscopy (HOESY) in the micellar solution
of cesium pentadecafluorooctanoate. The results are analyzed in terms
of a weak H-1-F-19 cross-relaxation between the water protons and the
fluorines in the fluoroalkyl chain and a strong F-19-F-19 cross-relax
ation within the fluoroalkyl chain. The water-surfactant cross-relaxat
ion indicates a water approach to the first CF2 segment in the order o
f 2.0 Angstrom and a short (much less than ns) water residence time. E
vidence of fluorine hydration further inside the micelle is presented.
(C) 1998 Academic Press.