Admicelle formation of the fluorocarbon hybrid surfactant 1-oxo-1-[4-(fluor
oalkyl)phenyl]-2-alkanesulfonate (FCm-HCn) on the aluminum oxide particle s
urface has been studied by the adsorption isotherm, zeta-potential of the p
article surface, degree of counterion dissociation, contact angle, and pyre
ne fluorescence probe measurement. Solution properties of FCm-HCn have been
compared with a dialkyl hydrocarbon surfactant, sodium 1-4-alkylphenyl-1-o
xo-2-alkanesulfonate (HCm-HCn). Adsorption isotherm study and zeta-potentia
l measurement indicate that the fluorocarbon hybrid surfactant can adsorb o
n the aluminum oxide surface at lower concentrations than the hydrocarbon s
urfactant. Furthermore, the total amount of surfactant adsorbed on the alum
inum oxide surface is higher than that of the hydrocarbon surfactant. A pyr
ene fluorescence probe study shows that pyrene molecules are solubilized ne
ar the hydrocarbon chain of the surfactant molecules, indicating that the h
ydrocarbon domain exists in the fluorocarbon hybrid surfactant admicelle. N
o pyrene excimer formation is observed in the hybrid surfactant admicelle b
ut in the hydrocarbon surfactant, implying the hybrid surfactant molecules
are packed tightly in the admicelle. In addition, the admicelle of the hybr
id surfactant is capable of solubilizing both 2-naphthol and 1-trifluoromet
hyl-2-naphthol and the total amount of solubilized solute increases with in
creasing surfactant concentration.