Synthesis of nanoparticles

Details Synthesis of nanoparticles Synthesis of nanoparticles

C - Chemistry, Metallurgy

30

B

C30B 29/60 (2006.01) A61B 5/117 (2006.01) C01B 25/26 (2006.01) C01F 17/00 (2006.01) C08K 7/18 (2006.01) C09D 7/12 (2006.01) C09K 11/81 (2006.01) C30B 29/14 (2006.01) G01N 21/64 (2006.01) G01N 21/66 (2006.01) G01N 21/87 (2006.01) B42D 15/10 (2006.01) B44F 1/12 (2006.01) F21K 2/00 (2006.01) G06K 1/12 (2006.01)

Patent

CA 2388094

The present invention relates to methods for the preparation of inorganic nanoparticles capable of fluorescence, wherein the nanoparticles consist of a host material that comprises at least one dopant. The synthesis of the invention in organic solvents allows to gain a considerably higher yield compared to the prior art synthesis in water. The nanoparticles obtained by the method of the present invention can be used to advantageously mark and reliably authenticate all kinds of objects by using an automated method on the basis of a characteristic emission. Further, the size distribution of the prepared nanoparticles is narrower which renders a subsequent size-selected separation process superfluous.

L'invention concerne des procédés pour produire des nanoparticules inorganiques fluorescentes, constituées d'un matériau hôte contenant au moins un dopant. Elle concerne en particulier un procédé de synthèse avec des solvants organiques, permettant d'obtenir un rendement nettement amélioré par rapport au rendement obtenu lors de la synthèse de l'eau, procédé de la technique antérieure. Des articles de tous types peuvent être marquées de manière avantageuse et authentifiés de manière sûre au moyen de procédés automatisés sur la base d'une émission caractéristique. D'autre part, une séparation ultérieure, en fonction de la taille, est superflue ca la répartition des nanoparticules produites est étroite.

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