We are very grateful to Ling Qi, Jean-Paul Chapel and Jean-Christophe Castaing from the Complex Fluids Laboratory (CRTB Rhodia, Bristol, Pa) for discussions and comments during the course of this study; to Christophe Lavelle and Eric Le Cam from the Institut Gustave Roussy (Université Paris-Sud) for complementary TEM experiments and helpful discussions; to Benoit Ladoux from the Laboratoire Matière et Systèmes Complexes (Université Paris-Denis Diderot) for access to microscopy and imaging facility and to Andrejs Cebers (Riga University, Latvia) for helpful discussions. Aude Michèle (LI2C-UPMC-Université Paris 6) is kindly acknowledged for the TEM and micro-diffraction experiments. This research is supported in part by Rhodia. Supporting Information is available online from Wiley InterScience or from the authors.
Electrostatic Co-Assembly of Iron Oxide Nanoparticles and Polymers: Towards the Generation of Highly Persistent Superparamagnetic Nanorods†
Article first published online: 5 SEP 2008
Copyright © 2008 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Volume 20, Issue 20, pages 3877–3881, October 17, 2008
How to Cite
Fresnais, J., Berret, J.-F., Frka-Petesic, B., Sandre, O. and Perzynski, R. (2008), Electrostatic Co-Assembly of Iron Oxide Nanoparticles and Polymers: Towards the Generation of Highly Persistent Superparamagnetic Nanorods. Adv. Mater., 20: 3877–3881. doi: 10.1002/adma.200800846
- Issue published online: 17 OCT 2008
- Article first published online: 5 SEP 2008
- Manuscript Received: 27 MAR 2008
- colloidal assemblies;
- iron oxide nanoparticles;
- superparametric nanorods
We report a protocol that allowed us to fabricate nanoparticle aggregates from anionically coated 7 nm iron oxide nanocrystals and cationic-neutral block copolymers. The control of electrostatics resulted in the elaboration of spherical clusters or of highly persistent nanostructured rods, with lengths between 1 and 50 µm (see figure). The rods were shown to be superparamagnetic.