Centre National De La Recherche Scientifique

Universite Paul Sabatier

Cpe Lyon Formation Continue Et Recherche

Christophe Mingotaud

Bruno Chaudret

Myrtil Kahn

Javier Rubio-Garcia

Serge Ravaine

Etienne Duguet

Elodie Bourgeat-Lami

Fabienne Gauffre-Guirardel

Sarmenio Saliba

Fabienne Gauffre Guirardel

Céline Poncet-Legrand

Stéphane Reculusa

A method for preparing a composition of metal nanocrystals from at least one organometallic precursor in a solvent medium in the presence of a PEG ligand, including a carbon chain, at least one end of which is functionalized by a coordination grouping including at least one hetero atom, and having at least one [OCHCH]grouping, n being an integer higher than 1, so as to be soluble both in the solvent medium and in water. The water-compatible and organic-compatible composition of metal nanocrystals thus obtained is also described.

Method for preparing an organic-compatible and water-compatible composition of metal nanocrystals, and resulting composition

A method for preparing a composition of metal oxide nanocrystals from at least one organometallic precursor in an aprotic solvent in the presence of at least one PEG ligand including a carbon chain having at least one end functionalized by a coordinating group containing at least one heteroatom, and at least one [&#x2014;OCHCH], group, such that it is soluble in both the aprotic solvent medium and in water. The resulting water-compatible and organocompatible composition of metal oxide nanocrystals is also described.

Method for preparing a water-compatible composition of metal oxide nanocrystals and the water-compatible composition obtained

The invention relates to nanometric or mesoscopic dissymmetric particles, and to a method for preparing the same. The particles have an inorganic part A and a spherical organic part B bound by physicochemical or covalent interactions. Material A is a metal oxide, a metal or a metal chalcogenide. Material B is a polymer consisting of recurrent units derived from a vinyl compound. The particles are obtained by modifying the surface of material A particles with a coupling agent C having a function Fwhich exhibits affinity for the polymer, and contacting the modified inorganic particles with the precursor(s) of the polymer B, in the presence of a free radical initiator and of a surfactant in solution in a solvent.

Nanometric or mesoscopic dissymetric particles, and method for preparing same

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Toulouse, France

Christophe Mingotaud