Nano Science and Technology Institute
Nanotech 2012 Vol. 1
Nanotech 2012 Vol. 1
Nanotechnology 2012: Advanced Materials, CNTs, Particles, Films and Composites (Volume 1)
Chapter 4: Nanoparticle Synthesis & Applications

Luminescent Terbium/Europium chelates-based Silica Nanoparticles : Stability and Incorporation Efficiency measured by Radioactive Probe

Authors:N. Wartenberg, O. Raccurt, M. Mazzanti, D. Imbert, E. Bourgeat-Lami
Affilation:Commissariat à l’Energie Atomique, FR
Pages:488 - 490
Keywords:radioactive probe, organolanthanides, luminescent nanoparticles
Abstract:We describe an original method based on europium-chelated radioactive measurements to investigate and compare the incorporation (by a reverse microemulsion-mediated sol-gel process without covalent bond) and the stability of two different organolanthanides into silica nanoparticles. In addition, scanning transmission electron microscopy in high angle annular dark field mode was used to locate the rare earth atoms inside the silica particles. We demonstrate in the present study that the chemical nature of the ligand has a strong impact on the organolanthanide localization inside the particles , which in turns influences the final concentration and stability over leakage. Besides, we point out the reliability of the radioactive method over classical ICPMS technique.
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