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Erschienen in: Colloid and Polymer Science 6/2014

01.06.2014 | Original Contribution

Luminescent nanoparticles prepared by encapsulating lanthanide chelates to silica sphere

verfasst von: Qiu-Ping Li, Bing Yan

Erschienen in: Colloid and Polymer Science | Ausgabe 6/2014

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Abstract

The luminescent nanoparticles were prepared by encapsulating the [LnL4] (Ln = Eu, Tb; L = BTFA, HFAA, TTFA, TFAA) complexes anion into the silicon framework. We firstly synthesized a series of novel siloxy-bearing lanthanide complex precursor, and then encapsulated them into the silica sphere by a modified Stöber process. As a result, four europium and two terbium tetrakis β-diketonate complexes functionalized silica sphere nanoparticles were obtained and characterized in detail using Fourier transform infrared spectra, X-ray diffraction, scanning electronic microscope, thermogravimetric analysis, luminescence excitation and emission spectroscopy, luminescence lifetime measurements, and diffuse reflectance UV–Vis spectroscopy. The result shows that these luminescent nanoparticles maintain the distinctive luminescence character of lanthanide chelate including broad excitation spectra, line-like emission spectra, high quantum efficiency, and long luminescent lifetime, which makes them great potential application in the synthesis of luminescent nanoparticle.

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Metadaten
Titel
Luminescent nanoparticles prepared by encapsulating lanthanide chelates to silica sphere
verfasst von
Qiu-Ping Li
Bing Yan
Publikationsdatum
01.06.2014
Verlag
Springer Berlin Heidelberg
Erschienen in
Colloid and Polymer Science / Ausgabe 6/2014
Print ISSN: 0303-402X
Elektronische ISSN: 1435-1536
DOI
https://doi.org/10.1007/s00396-014-3196-x

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