The Microenvironment Properties of the Mixed Micelle of SPFO and CTAB

The properties of the SPFO-CTAB mixed micelle microenvironment were studied by use of fluorescence probe, ESM and NMR techniques. The DPH(1,6-diphenyl-1, 3.5-hexatriene) fluorescence probe reveals a low dielectric constant in the SPFO-CTAB micellar core, and the degree of its polarization increased in SPFO-CTAB mixed micelle, referring a high microviscosity to the micellar core. Using 5NS (5-DOXYL-stearic acid) labelled technique. ESR spectroscopy also reveals the increase of microviscosity of the mixed micelle. It was shown by ¹H NMR and ¹⁹F NMR experiments that SPFO and CTAB formed mixed micelles and the fluorocarbon chain of SPFO had a strong interaction on the hydrocarban chain of CTAB, which suggested that a number of SPFO flurocarbon chains might penetrate the interior of CTAB micelle.