Stabilization and controlled association of superparamagnetic nanoparticles using block copolymers - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2008

Stabilization and controlled association of superparamagnetic nanoparticles using block copolymers

Résumé

Mixing in aqueous solutions polyelectrolyte-neutral block copolymers with oppositely charged species, spontaneously forms stable core-shell complexes, which are electrostatically driven. We report here on the structural and orientational properties of such mixed magnetic nanoclusters made of magnetic iron oxide nanoparticles (MNP) and polyelectrolyte-neutral block copolymers. Small Angle Neutron Scattering and Transmission Electron Microscopy experiments allows to probe the innercore nanoparticle organization, leading to an average inter-particle distance and confirming the hierarchical internal structure of the clusters. Thanks to the MNP optical anisotropy, we also probe the under-magnetic field orientational properties of the core-shell clusters and their dynamical rotational relaxation.
Fichier principal
Vignette du fichier
RPerzynski-MISM08 - JMMM2009 author ms.pdf (1.12 Mo) Télécharger le fichier
Origine : Fichiers produits par l'(les) auteur(s)
Loading...

Dates et versions

hal-00346968 , version 1 (31-05-2020)

Identifiants

Citer

Bruno Frka-Petesic, Jérôme Fresnais, Jean-François Berret, Vincent Dupuis, Régine Perzynski, et al.. Stabilization and controlled association of superparamagnetic nanoparticles using block copolymers. The 3rd Moscow International Symposium on Magnetism (MISM), Jun 2008, Moscou, Russia. pp.667-670, ⟨10.1016/j.jmmm.2008.11.021⟩. ⟨hal-00346968⟩
91 Consultations
66 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More