Synthesis and characterization of core-shell europium(III)-silica nanoparticles



: Härmä H., Graf C., Hänninen P.

: 2008

 Journal of Nanoparticle Research

: Journal of Nanoparticle Research

: 10

: 7

: 1221

: 1224

: 4

: 1388-0764

DOI: https://doi.org/10.1007/s11051-008-9380-5

: http://api.elsevier.com/content/abstract/scopus_id:48349096425


Luminescent core-shell europium(III)-silica nanoparticles were prepared using europium(III) chelate core structure and polyvinylpyrrolidone synthesis strategy for silica shell. Europium(III):naphtoyltrifluoroacetone: trioctylphosphineoxide complex was spontaneously agglomerated from organic solvent to water. Polyvinylpyrrolidone was adsorbed onto the core structure and stable silica shell was synthesized using tetraethylorthosilicate. Nanosized particles with a diameter of 71 ± 5 nm and 11 nm shell thickness were obtained with fluorescence decay rate of 517 μs and excitation and emission wavelengths of 334 and 614 nm, respectively. © 2008 Springer Science+Business Media B.V.



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