Artículos de revistas
Energetics of the phase transition in free-standing versus supported lipid membranes
Fecha
2015-07Registro en:
Mangiarotti, Agustín; Wilke, Natalia; Energetics of the phase transition in free-standing versus supported lipid membranes; American Chemical Society; Journal of Physical Chemistry B; 119; 28; 7-2015; 8718-8724
1520-6106
1520-5207
CONICET Digital
CONICET
Autor
Mangiarotti, Agustín
Wilke, Natalia
Resumen
We compared the thermodynamic behavior of supported and free-standing films of phospholipids with different chain length and showed that the change in free energy for the phase transition to a denser state was greater in free-standing than in supported membranes, with the differences being independent of the chain length. The presence of the support promoted a decrease in the energy gap between the coexisting phases of 1.7 kJ mol-1, and this was a long-range effect affecting both leaflets, probably related with the impediment of out-of-plane motion of the film by the solid surface.