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Article Dans Une Revue RSC Advances Année : 2017

Preparation of up-converting nano-biphasic calcium phosphate

Résumé

The nano-biphasic calcium phosphate co-doped with 1 mol% Er3+ and 5 mol% Yb3+ ions was prepared using Pechini's technique. The preparation of the biphasic calcium phosphate showed the removal of fluorine ions from the matrix. The structural properties and morphology of the particles were studied by means of XRD (X-ray powder diffraction), TEM (Transmission Electron Microscopy), and SEM (Scanning Electron Microscopy) techniques. The spectroscopic properties of Ca10(PO4)6F2/Ca3(PO4)2:Er3+,Yb3+ nano-biphasic calcium phosphate were investigated in detail using emission spectra, power dependence and emission kinetics. This material demonstrated intense green up-conversion depending on laser power. Additionally, the luminescence lifetimes for Er3+ ions were calculated from the measured decays. Power dependence of the green and red emissions was found to result from a temperature increase of nano-biphasic calcium phosphate that opens potential applications in theranostics.

Domaines

Chimie

Dates et versions

hal-01648724 , version 1 (27-11-2017)

Identifiants

Citer

Paulina Sobierajska, Katarzyna Zawisza, Robert m. Kowalski, Guillaume Renaudin, Jean-Marie Nedelec, et al.. Preparation of up-converting nano-biphasic calcium phosphate. RSC Advances, 2017, 7 (48), pp.30086 - 30095. ⟨10.1039/C7RA04809B⟩. ⟨hal-01648724⟩
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