Object of research - the mechanisms of interaction ordinary metal(II) salts, carboxylic acids and complex compounds Cu(II), Ni(II) and Zn(II) with the BLM. Purpose of the research - to establish a dependence of electrochemical properties of the BLM on the nature and structure of complex ions Cu(II), Ni(II) and Zn(II) for their interaction in aqueous solutions. Research methods - cyclic voltammetry, the measurement of membrane potential, pH-metry, electron spectrophotometry. Theoretical and practical results - the influence of the amino- and carboxylate coordination compounds on the conductivity and the potential of bilayer lipid membranes (BLM) and show that the processes of complexation of metal(II) (nickel, copper, zinc) ions in solution with 2,2 '-dipyridyl , ethylenediamine, hydrazine, formate, acetate, propionate ligands leads to the formation of complex ions, that increase the conductivity of model membranes due to of penetration through the lipid matrix and shift the membrane potential to positive values. The protonophore ability lower carboxylic acids (formic, acetic, propionic) was shown, which increases with the length of the hydrocarbon radical of a carboxylic acid. It was determined that aquacomplexes Ni (II), Cu (II) and Zn (II) shift membrane potential to positive values due to the interaction with the surface of lipid bilayer membranes. The novelty of the regulations and the results - the first time on the basis of determination of conductivity and capacity of the BLM by the action of aqua- and hydroxocomplexes of Ni(II), Cu(II) and Zn(II), lower carboxylic acids, carboxylate and aminocomplexes of metal(II) determined the relationship between structure complex ion and the ability of complex compounds to penetrate through model membranes.Field of fpplication - results in the definition of the characteristic features of the influence of complex compounds of metal(II) studied the structural types of electrochemical properties in model membranes and mechanisms of transport of substances through the BLM are important for the development of the electrochemistry of biological objects.
