Acid-base equilibria at interface separating electrolyte solution and lipid bilayer formed from phosphatidylcholine.
The dependence of the interfacial tension of a lipid membrane formed from phosphatidylcholine on the pH of the aqueous solution has been studied. The model describing the H(+) and OH(-) ions adsorption in the bilayer lipid surface has been presented in this work. We take suitable equations to describe the dependence of interfacial tension of a lipid bilayer membrane on H(+) and OH(-) ion concentrations. A theoretical equation is derived to describe this dependence in the whole pH range.
Petelska
Aneta D
AD
Laboratory of Interfacial Electrochemistry, Faculty of Chemistry, University of Warsaw, Pasteur St. 1, 02-093 Warsaw, Poland.
Figaszewski
Zbigniew A
ZA
D000136:Acid-Base Equilibrium; D004573:Electrolytes / Q000737:chemistry*; D006878:Hydroxides / Q000737:chemistry; D008051:Lipid Bilayers / Q000737:chemistry*; D008563:Membrane Lipids / Q000737:chemistry; D008962:Models, Theoretical; D010713:Phosphatidylcholines / Q000737:chemistry*; D013500:Surface Tension; D014867:Water / Q000737:chemistry
D004573:Electrolytes; D006878:Hydroxides; D008051:Lipid Bilayers; D008563:Membrane Lipids; D010713:Phosphatidylcholines; D014867:Water; C031356:hydroxide ion