Microviscosity in Diisooctyl Sulfosuccinate (Aerosol OT) Reversed Miceele Solutions

Abstract

The degree of polarization around the water pool generated in aerosol-OT/hexane/water reversed micelle solutions was studied by monitoring the depolarization of solubilized probe fluorescence. The 5(E)-styryl-1,3-dimethyl uracil (SDU) used in this study was moderately polar and proved to be solubilized between the interface and hydrocarbon phases in reversed micelle solution by a fluorescence quenching study with hydrophilic and hydrophobic quenchers. The degree of polarization monitored by SDU was parallel with that obtained from the fluorescence depolarization study of hydrophilic probes solubilized in the water pool and interface. A dramatic increase in microviscosity was observed when omega-value became small.