title: Structure of DNA-CTAB-hexanol complexes.
abstract: We have probed structures of the complexes formed by DNA with the cationic surfactant cetyltrimethylammonium bromide in the presence of the cosurfactant hexanol, using small angle x-ray diffraction techniques. They are found to exhibit a hexagonal-->lamellar-->hexagonal transition with increasing hexanol content. Quantitative analysis of the diffraction data shows that the complexes formed at low hexanol concentrations have an intercalated hexagonal (HI) structure, whereas those formed at higher hexanol content have an inverted hexagonal (HII) structure.
authors.affiliation: Raman Research Institute, Bangalore 560 080, India.
authors.forename: Rema
authors.initials: R
authors.lastname: Krishnaswamy
authors.forename: Georg
authors.initials: G
authors.lastname: Pabst
authors.forename: Michael
authors.initials: M
authors.lastname: Rappolt
authors.forename: V A
authors.initials: VA
authors.lastname: Raghunathan
authors.forename: A K
authors.initials: AK
authors.lastname: Sood
mesh_terms: D001665:Binding Sites; D000077286:Cetrimonium; D002593:Cetrimonium Compounds / Q000737:chemistry*; D003102:Colloids / Q000737:chemistry*; D003198:Computer Simulation; D004247:DNA / Q000737:chemistry* / Q000648:ultrastructure*; D000441:Hexanols / Q000737:chemistry*; D008956:Models, Chemical; D008958:Models, Molecular; D009690:Nucleic Acid Conformation; D012997:Solvents / Q000737:chemistry; D013501:Surface-Active Agents / Q000737:chemistry
chemical_list: D002593:Cetrimonium Compounds; D003102:Colloids; D000441:Hexanols; D012997:Solvents; D013501:Surface-Active Agents; D004247:DNA; D000077286:Cetrimonium