| Issue |
Europhys. Lett.
Volume 69, Number 2, January 2005
|
|
|---|---|---|
| Page(s) | 284 - 290 | |
| Section | Interdisciplinary physics and related areas of science and technology | |
| DOI | https://doi.org/10.1209/epl/i2004-10338-7 | |
| Published online | 22 December 2004 | |
Stabilization and controlled association of inorganic nanoparticles using block copolymers
1
Complex Fluids Laboratory, UMR CNRS - Rhodia no. 166 Cranbury Research Center Rhodia, 259 Prospect Plains Road Cranbury NJ 08512, USA
2
Groupe de Dynamique des Phases Condensées, UMR CNRS Université de Montpellier II no. 5581 - F-34095 Montpellier, France
Corresponding author: jeanfrancois.berret@us.rhodia.com
Received:
7
June
2004
Accepted:
12
November
2004
We report on the structural properties of mixed aggregates made
from rare-earth inorganic nanoparticles (radius 20
) and
polyelectrolyte-neutral block copolymers in aqueous solutions.
Using scattering experiments and Monte Carlo simulations, we show
that these mixed aggregates have a hierarchical core-shell
microstructure. The core is made of densely packed nanoparticles
and it is surrounded by a corona of neutral chains. This
microstructure results from a process of controlled association
and confers to the hybrid aggregates a remarkable colloidal
stability.
PACS: 82.70.-y – Disperse systems; complex fluids / 81.07.-b – Nanoscale materials and structures: fabrication and characterization / 61.10.-i – X-ray diffraction and scattering
© EDP Sciences, 2005
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