title: Enantiomeric separations using poly(L-valine) and poly(L-leucine) surfactants. Investigation of steric factors near the chiral center.
abstract: This study examined the effect of steric factors near the stereogenic center on polymerized surfactants, sodium N-undecyl-L-leucine, sodium N-undecyl-L-norleucine, sodium N-undecyl-L-tert.-butyl leucine, sodium N-undecyl-L-isoleucine. sodium N-undecyl-L-valine, sodium N-undecyl-L-norvaline. and sodium N-undecyl-L-proline. The effect of steric factors near the chiral center of the polymeric surfactants were examined using binaphthyl derivatives, aminoglutethimide, and 2,2,2-trifluoro-1-(9-anthryl)ethanol. In addition, fluorescence spectroscopy was used to determine the hydrophobicities of these surfactants using the environmentally-sensitive probe pyrene.
authors.affiliation: Department of Chemistry, Louisiana State University, Baton Rouge 70803-1804, USA.
authors.forename: Stefan J
authors.initials: SJ
authors.lastname: Thibodeaux
authors.forename: Eugene
authors.initials: E
authors.lastname: Billiot
authors.forename: Isiah M
authors.initials: IM
authors.lastname: Warner
mesh_terms: D006860:Hydrogen Bonding; D010455:Peptides / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D013237:Stereoisomerism; D013501:Surface-Active Agents / Q000737:chemistry*
chemical_list: D010455:Peptides; D013501:Surface-Active Agents; C027819:polyleucine; C036501:polyvaline