Electrical phenomena at the surface of phospholipid membranes relevant to the sorption of ionic compounds.
The change in electrostatical potential-profile across the phospholipid membranes caused by the binding or sorption of ionic compounds (metal cations, ionic surfactants, lipid-soluble ions, and ionophore-metal complexes) can be estimated by the direct measuring method (combination of zeta potential of lipid vesicles and surface potential of lipid monolayer). The analysis of the data by a simple electrical double layer theory reveals the binding/sorption location of these ions. The coexistent effect of metal ions and lipid-soluble ions on the sorption behavior is described from the interfacial electrochemical view point. The coagulation of lipid vesicles caused by those ionic compounds is also discussed.
Matsumura
H
H
Electrotechnical Laboratory, AIST, Tsukuba-City, Ibaraki, Japan.
Furusawa
K
K
D007477:Ions; D008433:Mathematics; D008564:Membrane Potentials; D008567:Membranes, Artificial; D008962:Models, Theoretical; D010743:Phospholipids
D007477:Ions; D008567:Membranes, Artificial; D010743:Phospholipids