期刊
EUROPEAN JOURNAL OF INORGANIC CHEMISTRY
卷 -, 期 27, 页码 4546-4554出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/ejic.201500265
关键词
Nanoparticles; Luminescence; Lanthanum; Europium; Neodymium; Biomarkers
资金
- Junta de Andalucia [FQM6090]
- Spanish Ministry of Economy and Competitiveness (MINECO) [MAT2011-23593, MAT2012-34919]
- European Research Council [239931-NANOPUZZLE]
- European Regional and Social Development Funds
- Aragon Autonomous Government (DGA, Consolidated Research Groups)
Ln-doped (Ln = Eu or Nd) LaVO4 nanoparticles functionalized with poly(acrylic acid) (PAA) were prepared from lanthanide and vanadate precursors in the presence of PAA by a simple one-pot method that consists of a homogeneous precipitation reaction in ethylene glycol/water at a moderate temperature (120 degrees C). The size of the nanoparticles could be modified in the 40-70 nm range by adjusting the amount of PAA added. The effects of the Eu and Nd contents of these nanomaterials on theirs optical properties (emission intensity and lifetime) were also analyzed to find the optimum nanophosphors. Finally, the nanoparticles showed negligible cytotoxicity for Vero cells at concentrations up to 0.05 mgmL(-1) and a high colloidal stability in physiological buffer solutions; therefore, they satisfy the most important requirements for in vitro biotechnological applications.
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