Volume 69, Number 2, January 2005
|Page(s)||284 - 290|
|Section||Interdisciplinary physics and related areas of science and technology|
|Published online||22 December 2004|
Stabilization and controlled association of inorganic nanoparticles using block copolymers
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: email@example.com
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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