LECOMMANDOUX, Sebastien; SANDRE, Olivier; CHÉCOT, Frédéric; RODRIGUEZ-HERNANDEZ, Juan; PERZYNSKI, Régine

doi:10.1016/j.jmmm.2005.10.035

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LECOMMANDOUX, Sebastien
Laboratoire de Chimie des polymères organiques [LCPO]
Team 3 LCPO : Polymer Self-Assembly & Life Sciences

SANDRE, Olivier
Liquides Ioniques et Interfaces Chargées [LI2C]
Team 3 LCPO : Polymer Self-Assembly & Life Sciences

CHÉCOT, Frédéric
Laboratoire de Chimie des polymères organiques [LCPO]

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Journal of Magnetism and Magnetic Materials. 2006, vol. 300, n° 1 Sp. Iss. SI, p. 71-74

Elsevier

Résumé en anglais

Magnetic nanocomposites are obtained by the self-assembly in water of polypeptide-based di-block copolymers polybutadiene-b-poly(glutamic acid) combined with hydrophobic gamma-Fe2O3 nanoparticles. These hybrid supramolecular objects are either-(3D) spherical micelles filled with a hydrophobic ferrofluid at a concentration as high as 45 vol% or-hollow vesicles with a (2D) magnetic membrane. In this last case, the organic amphiphile copolymers are able to confine the hydrophobic nanoparticles within the thin layer of polybutadiene blocks. We probe these objects by atomic force microscopy, by small-angle neutron scattering (SANS) and by light scattering. Furthermore, anisotropic SANS data bring the experimental evidence of the capability to modify the shape of the mineralized membranes in response to a magnetic field intensity as low as 290G.< Réduire

Mots clés en anglais

Polymersomes

Polymer vesicles

Polymer micelles

ferrofluids

self-assembly

block copolymers

magnetic particles

colloids

nano-composites

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Self-assemblies of magnetic nanoparticles and di-block copolymers: Magnetic micelles and vesicles

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