Abstract
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.
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Härmä, H., Graf, C. & Hänninen, P. Synthesis and characterization of core-shell europium(III)-silica nanoparticles. J Nanopart Res 10, 1221–1224 (2008). https://doi.org/10.1007/s11051-008-9380-5
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DOI: https://doi.org/10.1007/s11051-008-9380-5