COMPARATIVE-STUDY OF THE MIXED MONOLAYERS OF VALINOMYCIN WITH DIOCTADECYLDIMETHYLAMMONIUM BROMIDE AND DIPALMITOYLPHOSPHATIDYLETHANOLAMINE

Citation
Sy. Zaitsev et al., COMPARATIVE-STUDY OF THE MIXED MONOLAYERS OF VALINOMYCIN WITH DIOCTADECYLDIMETHYLAMMONIUM BROMIDE AND DIPALMITOYLPHOSPHATIDYLETHANOLAMINE, Colloids and surfaces. A, Physicochemical and engineering aspects, 121(1), 1997, pp. 37-46
Citations number
15
Categorie Soggetti
Chemistry Physical
ISSN journal
09277757
Volume
121
Issue
1
Year of publication
1997
Pages
37 - 46
Database
ISI
SICI code
0927-7757(1997)121:1<37:COTMMO>2.0.ZU;2-A
Abstract
The surface pressure-molecular area and surface potential-molecular ar ea isotherms for mixed monolayers of valinomycin and dipalmitoylphosph atidylethanolamine (DPPE) or dioctadecyldimethylammonium bromide (DOMA ) at various aqueous salt subphases were measured. Specific interactio n of valinomycin in the monolayers of both lipids with K+ as compared to Na+ from the aqueous subphase was found. The head groups, positivel y charged (DOMA) and zwitterionic (DPPE), respectively, of the lipids influence the cation binding ability of valinomycin at the interfaces.