Adsorption of Monovalent Cations on Negatively Charged Liposomes Evalusted from the Spectral Change of Methylene Blue

Abstract

The adsorption of monovalent cations on negatively charged liposomes (membranes) was studied by the following the spectral changes of methylene blue. The strength of adsorption of inorganie monovalent cations (as chlorides) was in the order lithium>sodium>ammonium>potassium>rubidium>cesium ions, and that of organic monovalent cations (alkylammonium ions as hydrochlorides) was in the order n-octyl>n-heptyl>methyl>n-hexyl>ethyl>n-propyl>n-butyl>n-amylammonium ions.