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Colloidal synthesis and characterization of monocrystalline apatite nanophosphors

Chane-Ching, Jean-Yves and Lebugle, Albert and Rousselot, I. and Pourpoint, A. and Pellé, F. Colloidal synthesis and characterization of monocrystalline apatite nanophosphors. (2007) Journal of Materials Chemistry, vol. 17 . pp. 2904-2913. ISSN 0959-9428

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Official URL: http://dx.doi.org/10.1039/b701194f

Abstract

Here, we report the synthesis and characterization of 12 nm long, ultrafine, individualized calcium phosphate nanorods. Synthesis of these nanobuilding blocks involved the preparation of a calcium phosphate hybrid precursor containing an aminophosphate ligand. Colloidal calcium phosphate nanoparticles were achieved through the reorganization of an amorphous hybrid precursor at high temperature during a post-ageing step. These nanoparticles can be described as monocrystalline deficient calcium hydroxyapatite Ca102x(PO4)62x(HPO4)x(OH)22x, with surfaces stabilized by [PO3 22–O(CH2)2NH3 +] groups. A model is proposed in which the [ab] plane of the nanoparticles is formed by 9 unit cells surrounded by a peripheral layer composed of twelve aminoethyl phosphate (AEP)-calcium phosphate (xCa9(PO4)6 2 yCa-(AEP)2) hybrid units. Our ultrafine individualized calcium phosphate nanophosphors, synthesized in aqueous medium and displaying amino groups on their surface, are good candidates for use as fluorescent probes in biological imaging.

Item Type:Article
Additional Information:Thanks to Royal Society of Chemistry editor. The definitive version is available at http://www.rsc.org The original PDF of the article can be found at Journal of Materials Chemistry website : http://www.rsc.org/publishing/journals/JM/
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution: Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Other partners > Rhodia (FRANCE)
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
Other partners > Ecole Nationale Supérieure de Chimie de Paris - ENSCP (FRANCE)
French research institutions > Centre National de la Recherche Scientifique - CNRS
Laboratory name:
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Deposited By:Celine Cabaup

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