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GROUPES

Luminescent nanoparticles

• Geneviève Mialon ( PhD student), , Blaise Fleury (PhD student)
• Mélanie Poggi, Géraldine Dantelle, Thierry Gacoin, Jean-Pierre Boilot

Colloidal suspensions of LaPO₄.xH₂O : Ln³⁺ nanoparticles with Ln³⁺ = Ce³⁺, Tb³⁺ or Eu³⁺ (V. Buissette PhD)

The luminescent nanoparticles are an important research topic of the group for many years. We are particularly interested in the lanthanide or transition metal doped - oxide particles. Our activities include:

• The synthesis of nanoparticles by relatively conventional techniques of colloidal chemistry.
• The study of size and surface effects on the emission properties of particucles, especially in comparison with the reference bulk materials
• The applications of these particles as biological probes or for carrying out transparent and luminescent materials.

Our work has focused on vanadate (YVO₄: Ln = Eu, Yb, Er, Nd), phosphates (LaPO₄: Ln Ln = Tb, Ce), silicates and aluminates nanoparticles.

Collaborations

• Rhodia, centre de recherche d'Aubervilliers (T. Lemercier, V. Buissette)
• Laboratoire de Physico-chimie des Matériaux Luminescents, Lyon (C. Dujardin)
• Laboratoire d'Optique et Biosciences, Ecole Polytechnique (A. Alexandrou)

Former students : A. Huignard, V. Buissette, C. Bertail-Huré

Financial support and research programs

• Rhodia Electronics and catalysis
• C'nano ile-de France - project Dynanox
• Ecole Polytechnique (Bourse Monge)

Significant publications

• High Temperature Strategy for Oxide Nanoparticle Synthesis

G. Mialon, M. Gohin, T. Gacoin, J-P. Boilot ACS Nano 2 (12), 2505-2512(2008)

• Optical in situ size determination of single lanthanide-ion doped oxide nanoparticules

D. Casanova, D. Giaume, E. Beaurepaire, T. Gacoin, J.-P. Boilot, A. Alexandrou Appl. Phys. Lett. 89, 253103 (2006)

• Aqueous routes to lanthanide-; doped oxide nanophosphors

V. Buissette, D. Giaume, T. Gacoin and J-P. Boilot J. Mater. Chem. 16, 529–539 (2006)(feature article)

• Luminescent Core-Shell Nanocomposites with the Rhabdophane LnPO₄-xH₂O Structure : stabilization of Ce³⁺-Doped Compositions

V. Buissette, M. Moreau, T. Le Mercier, T. Gacoin, J-P. Boilot Adv. Funct. Mat. 16 (3), 351-355 (2006)

• Emission processes in YVO₄:Eu nanoparticles

A. Huignard, V. Buissette, A-C. Franville, T. Gacoin, J-P. Boilot J. Phys. Chem. B 107, 6754 (2003)

• Synthesis and luminescent properties of colloidal YVO₄:Eu phosphors

A. Huignard, T. Gacoin, J-P. Boilot Chem. Mat. 12(4), 1090-1094 (2000).