1. Characterization, Tuning and Application of Fluorinated Mixed Cationic/Anionic Surfactant Vesicles
Barbara Knutson, University of Kentucky, Dept. of Chemical and Materials Engineering
Fluorinated surfactants are more hydrophobic, rigid, and self assemble more readily than their hydrocarbon counterparts. This research investigates the formation of spontaneous vesicles of cationic/anionic surfactants comprising fluorinated and mixed fluorinated/hydrocarbon surfactants and explores the potential to tailor the properties of fluorinated vesicle bilayers.
Phase behavior has been determined for the fluorinated/fluorinated cationic-anionic surfactants HFDPC(+)/SPFO(-) and the mixed hydrocarbon-fluorocarbon surfactant pair, CPB(+)/SPFO(-).
Synthesis of hollow silica particles through transcriptive templating of catanionic vesicles
(CPB)
(HFDPC)
(SPFO) N B r - + C H 2 3 N C l - + H 2 F N a + O - C F 2 3
CPB/SPFO vesicles
The robustness of fluorinated/fluorinated bilayers is suggested by two applications: the success of transcriptive templating at a higher precursor to surfactant ratios than in mixed fluorinated vesicles and the improved retention of a model cationic dye (R6G) encapsulated by fully fluorinated catanionic vesicles.