Interaction of magnetic nanoparticles with phospholipid films adsorbed at a liquid/liquid interface
The interaction of Co hexagonal magnetic nanoparticles (MNPs) with distearoyl phosphatidyl glycerol(DSPG) and distearoyl phosphatidic acid (DSPA) films adsorbed at a water/1,2-dichloroethane interface isstudied employing cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), capacity...
| Autores: | , , , |
|---|---|
| Formato: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2014 |
| País: | Argentina |
| Recursos: | Consejo Nacional de Investigaciones Científicas y Técnicas |
| Repositorio: | CONICET Digital (CONICET) |
| Idioma: | inglés |
| OAI Identifier: | oai:ri.conicet.gov.ar:11336/31502 |
| Acesso em linha: | http://hdl.handle.net/11336/31502 |
| Access Level: | acceso abierto |
| Palavra-chave: | Cobalt Magnetic Nanoparticles Phospholipids Monolayers Liquid/Liquid Interfaces Ion Transfer https://purl.org/becyt/ford/1.4 https://purl.org/becyt/ford/1 |
| Resumo: | The interaction of Co hexagonal magnetic nanoparticles (MNPs) with distearoyl phosphatidyl glycerol(DSPG) and distearoyl phosphatidic acid (DSPA) films adsorbed at a water/1,2-dichloroethane interface isstudied employing cyclic voltammetry (CV), electrochemical impedance spectroscopy (EIS), capacitycurves and interfacial pressure–area isotherms. DSPA and DSPG adsorb at the interface forming homo-genous films and producing a blocking effect on the transfer process of tetraethyl ammonium (TEA+),used as a probe cation. In the presence of Co NPs this effect is reversed and the reversible transferprocess for TEA+is reestablished, to a greater or lesser extent depending on the structuration of the film.Co–DSPA hybrid films have a homogeneous structure while Co-DSPG films present different domains.Moreover, the presence of Co on DSPA film modifies the partition coefficient of the organic electrolyteinto the hydrocarbon layer. |
|---|