Synthesis, functionalization and properties of uniform europium-doped sodium lanthanum tungstate and molybdate (NaLa(XO4)2, X = Mo,W) probes for luminescent and X-ray computed tomography bioimaging

[Display omitted] A one-pot simple procedure for the synthesis of uniform, ellipsoidal Eu3+-doped sodium lanthanum tungstate and molybdate (NaLa(XO4)2, X  = W, Mo) nanophosphors, functionalized with carboxylate groups, is described. The method is based on a homogeneous precipitation process at 120 °...

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Bibliographic Details
Published in:Journal of colloid and interface science 2019-10, Vol.554, p.520-530
Main Authors: Laguna, Mariano, Nuñez, Nuria O., Becerro, Ana I., Lozano, Gabriel, Moros, Maria, de la Fuente, Jesús M., Corral, Ariadna, Balcerzyk, Marcin, Ocaña, Manuel
Format: Article
Language:English
Subjects:
Animals
Chlorocebus aethiops
Contrast Media - chemical synthesis
Contrast Media - chemistry
Europium
Europium - chemistry
Functionalization
Lanthanum - chemistry
Luminescence
Luminescent Agents - chemical synthesis
Luminescent Agents - chemistry
Molybdenum - chemistry
NaLa(MoO4)2
NaLa(WO4)2
Nanoparticles
Tomography, X-Ray Computed
Tungsten Compounds - chemical synthesis
Tungsten Compounds - chemistry
Vero Cells
X-ray computed tomography
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Summary:[Display omitted] A one-pot simple procedure for the synthesis of uniform, ellipsoidal Eu3+-doped sodium lanthanum tungstate and molybdate (NaLa(XO4)2, X  = W, Mo) nanophosphors, functionalized with carboxylate groups, is described. The method is based on a homogeneous precipitation process at 120 °C from appropriate Na+, Ln3+ and tungstate or molybdate precursors dissolved in ethylene glycol/water mixtures containing polyacrylic acid. A comparative study of the luminescent properties of both luminescent materials as a function of the Eu3+ doping level has been performed to find the optimum nanophosphor, whose efficiency as X-ray computed tomography contrast agent is also evaluated and compared with that of a commercial probe. Finally, the cell viability and colloidal stability in physiological pH medium of the optimum samples have also been studied to assess their suitability for biomedical applications.
ISSN:0021-9797
1095-7103
DOI:10.1016/j.jcis.2019.07.031