title: Binding of Sulfonamide Antibiotics to CTABr Micelles Characterized Using (1)H NMR Spectroscopy.
abstract: Interactions of nine sulfonamide antibiotics (sulfadoxine, sulfathiazole, sulfamethoxazole, sulfamerazine, sulfadiazine, sulfamethazine, sulfacetamide, sulfaguanidine, and sulfanilamide) with cetyltrimethylamonium bromide (CTABr) micelles were examined using (1)H NMR spectroscopy. Seven of the nine provided a significant change in the (1)H NMR chemical shift such that the magnitude and direction (upfield vs downfield) of the chemical shift could be used to propose a locus and orientation of the sulfonamide within the micelle structure. The magnitude of the chemical shift was used to estimate the binding constant for seven sulfonamides with CTABr micelles, providing values and an overall pattern consistent with previous studies of these sulfonamides.
authors.affiliation: Department of Chemistry, Queen's University , Kingston, Ontario, Canada K7L 3N6.
authors.forename: Ashish K
authors.initials: AK
authors.lastname: Sarker
authors.affiliation: Department of Chemistry, Queen's University , Kingston, Ontario, Canada K7L 3N6.
authors.forename: Patrick J
authors.initials: PJ
authors.lastname: Cashin
authors.affiliation: Water Science and Technology Directorate, Environment and Climate Change Canada, 867 Lakeshore Road, Burlington, Ontario, Canada L7S 1A1.
authors.forename: Vimal K
authors.initials: VK
authors.lastname: Balakrishnan
authors.affiliation: Water Science and Technology Directorate, Environment and Climate Change Canada, 867 Lakeshore Road, Burlington, Ontario, Canada L7S 1A1.
authors.forename: Kirsten
authors.initials: K
authors.lastname: Exall
authors.affiliation: Department of Chemistry, Queen's University , Kingston, Ontario, Canada K7L 3N6.
authors.forename: Erwin
authors.initials: E
authors.lastname: Buncel
authors.affiliation: Department of Chemistry, Queen's University , Kingston, Ontario, Canada K7L 3N6.
authors.forename: R Stephen
authors.initials: RS
authors.lastname: Brown
mesh_terms: D000900:Anti-Bacterial Agents / Q000737:chemistry*; D000077286:Cetrimonium; D002593:Cetrimonium Compounds / Q000737:chemistry*; D009682:Magnetic Resonance Spectroscopy; D008823:Micelles; D013449:Sulfonamides / Q000737:chemistry*
chemical_list: D000900:Anti-Bacterial Agents; D002593:Cetrimonium Compounds; D008823:Micelles; D013449:Sulfonamides; D000077286:Cetrimonium