Magnetic Multilamellar Liposomes Produced by In Situ Synthesis of Iron Oxide Nanoparticles: 'Magnetonions'
| Autor: | Eric Lebraud, Marie-Edith Meyre, Chrystel Faure, Olivier Lambert, Sylvain Trépout |
|---|---|
| Přispěvatelé: | Centre de recherches Paul Pascal (CRPP), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Université Sciences et Technologies - Bordeaux 1, Chimie et Biologie des Membranes et des Nanoobjets (CBMN), Université de Bordeaux (UB)-École Nationale d'Ingénieurs des Travaux Agricoles - Bordeaux (ENITAB)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Université de Bordeaux (UB) |
| Jazyk: | angličtina |
| Rok vydání: | 2009 |
| Předmět: |
inorganic chemicals
Materials science [SDV.BIO]Life Sciences [q-bio]/Biotechnology Time Factors Absorption spectroscopy Coprecipitation Iron Analytical chemistry Nanoparticle 02 engineering and technology 010402 general chemistry 01 natural sciences Ferric Compounds law.invention Ion Diffusion chemistry.chemical_compound Magnetics X-Ray Diffraction law Materials Chemistry Synthesis of Iron Oxide Physical and Theoretical Chemistry [INFO.INFO-BT]Computer Science [cs]/Biotechnology Organic Chemicals Particle Size Liposome Vesicle fungi Temperature food and beverages 021001 nanoscience & nanotechnology 0104 chemical sciences Surfaces Coatings and Films chemistry Liposomes Nanoparticles Electron microscope 0210 nano-technology Iron oxide nanoparticles Nuclear chemistry |
| Zdroj: | Journal of Physical Chemistry B Journal of Physical Chemistry B, American Chemical Society, 2009, 113 (25), pp. 8552-8559. ⟨10.1021/jp901105c⟩ |
| ISSN: | 1520-6106 1520-5207 |
| DOI: | 10.1021/jp901105c⟩ |
| Popis: | 8 pages; International audience; 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. |
| Databáze: | OpenAIRE |
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