Ionic permeability of synthetic vesicles

Robert T. Hamilton, Eric W. Kaler

Research output: Contribution to journalArticle

12 Scopus citations


The permeability of vesicles of the synthetic surfactant sodium 4-(1′-heptylnonyl)benzenesulfonate changes when the crown ether ionophore dicyclohexano-18-crown-6 is added to the vesicle wall. The permeabilities of both potassium and sodium increase, with the potassium increase being much larger. The increase is not the result of defects introduced by the crown ether. Two structural models are proposed to account for the observed selective transport. The addition of crown ether also results in an increase in the concentration of small nonvesicular aggregates present in equilibrium with the surfactant vesicles, but does not change the vesicle size.

Original languageEnglish (US)
Pages (from-to)248-255
Number of pages8
JournalJournal of Colloid And Interface Science
Issue number1
StatePublished - Mar 1987

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