Magnetic Multilamellar Liposomes Produced by In Situ Synthesis of Iron Oxide Nanoparticles: "Magnetonions" - Centre de recherches Paul Pascal Accéder directement au contenu
Article Dans Une Revue Journal of Physical Chemistry B Année : 2009

Magnetic Multilamellar Liposomes Produced by In Situ Synthesis of Iron Oxide Nanoparticles: "Magnetonions"

Résumé

We report the formation of magnetic onion-type multilamellar vesicles. Iron oxide nanoparticles (np's) were synthesized inside lipidic multilamellar vesicles by coprecipitation of vesicle-encapsulated Fe2+ and Fe3+ ions induced by HO- diffusion through vesicle lamellae. The iron ion encapsulation efficiency of onions was measured by potentiometry and UV-vis absorbance spectroscopy. Its high value (75 ( 5% for both Fe2+ and Fe3+) ensures an intravesicular synthesis, as confirmed by cryo-transmission electron microscopy (TEM) imaging. The as-grown nanoparticles are characterized by X-ray diffraction analysis and TEM, and magnetic onions are imaged by cryo-TEM. The np size, controlled by temperature and time, ranges from 3 to 6 nm and is shown to be a key parameter for onion stability.
Fichier non déposé

Dates et versions

hal-00506254 , version 1 (27-07-2010)

Identifiants

Citer

Chrystel Faure, Marie-Edith Meyre, Sylvain Trépout, Olivier Lambert, Eric Lebraud. Magnetic Multilamellar Liposomes Produced by In Situ Synthesis of Iron Oxide Nanoparticles: "Magnetonions". Journal of Physical Chemistry B, 2009, 113 (25), pp. 8552-8559. ⟨10.1021/jp901105c⟩. ⟨hal-00506254⟩

Collections

CNRS ICMCB CRPP
36 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More