Planar, cylindrical and spherical electrical double layers in biological systems. The effect of counterion size

• Autorzy: Bohinc K , Iglic A. , Slivnik T. , Kralj-Iglic V.
• Języki publikacji: EN

Abstrakty

EN

The effect of counterion size on the electrical properties of an electrolyte solution in contact with charged planar, cylindrical and spherical surfaces is considered. Electrostatic interaction is considered by means of the mean electrostatic field, while the finite size of particles constituting the electrolyte solution is considered via the excluded volume effect within the lattice statistics. Different sizes of counterion are described by different values of the lattice constant. It is shown that the excluded volume effect considerably decreases the calculated number density of counterions near the charged surface. This effect is more pronounced in cylindrical geometry than in spherical geometry, and less pronounced than in planar geometry.

Słowa kluczowe

EN

micelle; excluded volume effect; counterion; biological membrane; membrane; electrostatic interaction; biological system; electrical double layer; electrical property; polyelektrolyte

• Wydawca: -
• Czasopismo: Cellular and Molecular Biology Letters
• Rocznik: 2002
• Tom: 07
• Numer: 3
• Opis fizyczny: p.839-843,fig.

Twórcy

autor

Bohinc K

autor

Iglic A.

autor

Slivnik T.

autor

Kralj-Iglic V.

Bibliografia

• 1. McLaughlin, S. The electrostatic properties of membranes. Ann. Rev. Biophys. Biophys. Chem. 18 (1989) 113-136.
• 2. Kralj-Iglič, V., Iglič, A., Gomišček, G., Sevšek, F., Arrigler, V. and Haegerstrand, H. Microtubes and nanotubes of a phospholipid bilayer membrane. J. Phys. A. Math. Gen. 35 (2002) 1533-1549.
• 3. Klein, B. J. and Pack, G. R. Density in the Enviroment of DNA. Biopolymers 22 (1983) 2331-2352.
• 4. Schmitz, K. S. Macroions in Solution and Colloidal Suspension, VCH Publishers, New York, 1993.
• 5. Granot, J. Effect of finite size on the solution of the Poisson-Boltzmann equation: Application to the binding of divalent metal ions to DNA. Biopolymers 22 (1983) 1831-1841.
• 6. Das, T., Bratko, D., Bhuiyan, L. B. and Outhwaite, C. W. Polyelectrolyte solutions containing mixed valency ions in the cell model. A simulation and modified Poisson-Boltzmann theory. J. Phys. Chem. 107 (1997) 9197-9207.
• 7. Kralj-Iglič, V. and lglic, A. A simple statistical mechanical approach to the free energy of the electric double layer including the excluded volume effect. J. Phys. II (France) 6 (1996) 477-491.
• 8. Wicke, E. and Eigen, Z. Über den Einflß des Raumbedarfs von Ionen in wäßriger Lösung auf ihre Verteilung im elektrischem Feld und ihre Aktivitätskoeffizienten, Z. Elektrochem. 56 (1952) 551.
• 9. Bohinc, K., Kralj-Iglič, V., Iglič, A. and Slivnik, T. Charged cylindrical surfaces: effect of finite ion size. Bioelectrochemistry 57 (2002) 73-81.
• 10. Cuvillier, N. Breakdown of the Poisson-Boltzmann description for electrical double layers involving large multivalent ions. Thin Solid Films 327-329 (1998) 19-23.