Specific alkali cation effects in the transition from micelles to vesicles through salt addition
| Autor: | Markus Drechsler, Audrey Renoncourt, J. M. Verbavatz, Pierre Bauduin, Werner Kunz, Nina Vlachy, M. Dubois, Didier Touraud, Barry W. Ninham |
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| Přispěvatelé: | Protéines membranaires transductrices d'énergie (PMTE), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Centre National de la Recherche Scientifique (CNRS), Techniques of Informatics and Microelectronics for integrated systems Architecture (TIMA), Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP)-Centre National de la Recherche Scientifique (CNRS)-Université Grenoble Alpes (UGA), Techniques de l'Informatique et de la Microélectronique pour l'Architecture des systèmes intégrés (TIMA), Université Joseph Fourier - Grenoble 1 (UJF)-Institut polytechnique de Grenoble - Grenoble Institute of Technology (Grenoble INP )-Centre National de la Recherche Scientifique (CNRS), Lentz, Celine |
| Rok vydání: | 2007 |
| Předmět: |
chemistry.chemical_classification
Hofmeister series Inorganic chemistry Ionic bonding Salt (chemistry) [SDV.BBM.BP] Life Sciences [q-bio]/Biochemistry Molecular Biology/Biophysics 02 engineering and technology Surfaces and Interfaces 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics Alkali metal 01 natural sciences Micelle 0104 chemical sciences [SDV.BBM.BP]Life Sciences [q-bio]/Biochemistry Molecular Biology/Biophysics chemistry.chemical_compound Pulmonary surfactant chemistry Sodium sulfate Electrochemistry General Materials Science Counterion 0210 nano-technology Spectroscopy |
| Zdroj: | Langmuir Langmuir, American Chemical Society, 2007, pp.2376-2381 Langmuir, 2007, pp.2376-2381 |
| ISSN: | 0743-7463 1520-5827 |
| Popis: | The transition of ionic micelles to vesicles with added salts is explored in this paper. The catanionic surfactant solution was comprised of sodium dodecylsulfate (SDS) and dodecyltrimethylammonium bromide (DTAB) with an excess of SDS. The micellar size increased with concentration for all salts. No anion specificity was found, probably because of the excess of SDS. However, when the cation of the added salt was varied, large differences were observed in the hydrodynamic radii of the aggregates. A classification of the cations according to their ability to increase the measured hydrodynamic radii follows a Hofmeister series. The change in aggregate size can be explained by modified counterion binding and dehydration of the surfactant headgroups. |
| Databáze: | OpenAIRE |
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