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Molecular structure of the dioctadecyldimethylammonium bromide (DODAB) bilayer.
- Source :
-
Langmuir : the ACS journal of surfaces and colloids [Langmuir] 2010 Oct 05; Vol. 26 (19), pp. 15076-9. - Publication Year :
- 2010
-
Abstract
- Dioctadecyldimethylammonium bromide (DODAB) is a double-chained quaternary ammonium surfactant that assembles in water into bilayer structures. This letter reports the molecular dynamics (MD) computer simulations of the DODAB bilayer at 25 °C. The simulations show that the surfactant membrane arranges spontaneously into the rippled phase (P(β)(')) at that temperature. The ordering within the chain fragment closest to the hydrophilic head (carbon atoms 1-5) is relatively low. It grows significantly for the carbon atoms located in the center of the membrane (atoms 6-17). The C6-C17 chain fragments are well aligned and tilted by ca. 15° with respect to the bilayer normal.
Details
- Language :
- English
- ISSN :
- 1520-5827
- Volume :
- 26
- Issue :
- 19
- Database :
- MEDLINE
- Journal :
- Langmuir : the ACS journal of surfaces and colloids
- Publication Type :
- Academic Journal
- Accession number :
- 20804190
- Full Text :
- https://doi.org/10.1021/la102324p