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- W2081520750 abstract "The effect of amino acid order on chiral selectivity in polymeric dipeptide surfactants, as well as the physical properties of the surfactants, is investigated. An understanding of enantioselectivity of such dipeptide surfactants is crucial to the design of more efficient polymeric surfactants and has implications in other areas of research such as enantioselective interactions of amino acid based compounds (i.e., enzymes, hemoglobin, antibodies, etc.). It should be noted that such polymeric surfactants are not easily crystallized. Therefore, in a manner similar to the study of proteins, fluorescence spectroscopy is a powerful tool used to study the structure-function relationship of these polymeric surfactants. The microenvironments inside the core of 18 polymeric surfactants were characterized using the environmentally sensitive probes pyrene and 6-propionyl-2-(dimethylamino)naphthalene (Prodan). The surfactants examined in this study include all possible dipeptide combinations of the L-form of alanine, valine, and leucine and the achiral amino acid glycine (except glycine-glycine) as well as the single amino acid surfactants of alanine, valine, and leucine. The results of the fluorescent probe studies led to a proposed structure of the polymeric dipeptide surfactants in solution. The implications of the proposed structure for chiral selectivity were tested with two model atropisomers, (+/-)1,1'-bi-2-naphthol and (+/-)1,1'-bi-2-naphthyl-2,2'-diyl hydrogen phosphate, using capillary electrokinetic chromatography." @default.
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- W2081520750 date "1999-02-24" @default.
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- W2081520750 title "Amino Acid Order in Polymeric Dipeptide Surfactants: Effect on Physical Properties and Enantioselectivity" @default.
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- W2081520750 doi "https://doi.org/10.1021/ac980461r" @default.
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