Self-assembly properties of some chiral N-palmitoyl amino acid surfactants in aqueous solution
| Autor: | Jean-François Lamère, Fernanda Rodrigues, Mariana Gerova, Suzanne Fery-Forgues, A. Dobrev |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
chemistry.chemical_classification
Circular dichroism Aqueous solution Chemistry Circular Dichroism Palmitic Acid Stereoisomerism Surfaces Coatings and Films Electronic Optical and Magnetic Materials Amino acid Solutions Biomaterials Surface-Active Agents Colloid and Surface Chemistry Microscopy Electron Transmission Dynamic light scattering Polymer chemistry Scattering Radiation Organic chemistry Racemic mixture Amino Acids Threonine Enantiomer Chirality (chemistry) Nuclear Magnetic Resonance Biomolecular |
| Zdroj: | Journal of Colloid and Interface Science. 319:526-533 |
| ISSN: | 0021-9797 |
| DOI: | 10.1016/j.jcis.2007.12.004 |
| Popis: | Various chiral N-palmitoyl amino acid surfactants (AAS) derived from methionine, proline, leucine, threonine, phenylalanine and phenylglycine were prepared and converted to their sodium salt. The properties of the aggregates formed in aqueous solution were studied for both the optically-active compounds and their racemic mixture. Characterization was made by surface tensiometry, fluorimetry, dynamic light scattering, circular dichroism (CD) and transmission electron microscopy. It appeared that most of the AAS studied in this work spontaneously formed different types of aggregates, including micrometer-sized aggregates. No significant difference could be found between the critical aggregation concentration (cac) value of pure enantiomers and that of the racemic forms. CD spectra did not reveal any aggregation-induced chirality. |
| Databáze: | OpenAIRE |
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