The synthesis of rare earth fluoride based nanoparticles

In the present work, flame pyrolysis is used to prepare nanoparticles of non-oxidic, doped rare earth fluorides. The upconversion emission during excitation with NIR laser and the thermal behavior of the derived phosphors are analyzed. The cubic-to-hexagonal phase transition of NaYF4 will be examined for various syntheses and thermal treatment conditions.

26-6-2006 · Synthesis of complex rare earth fluoride ..

In the past decade, many efforts have been dedicated to prepare the RE-doped fluoride UCNPs with high quality in order to meet the requirement of various bio-related applications, in particular, smaller UCNPs with size compatible to biomolecules or protein. Up to date, the established preparation methods encompass thermal decomposition, hydro(solvo)thermal, ionic liquids-based synthesis, co-precipitation, combustion, and sol-gel. Among them, the thermal decomposition method and the hydro(solvo) thermal method are two general and important approaches for controlled synthesis of uniform fluoride NPs. Up to now, most of sensing applications are based on nanoparticles prepared using these two approaches. Hence, we will discuss their synthetic chemistry first in this section, and then discuss the use of them for sensing applications in .


the synthesis of complex rare earth fluoride ..

The synthesis of rare earth fluoride based nanoparticles

In this paper, a hydrothermal synthetic route has been developed to prepare a class of rare-earth fluoride nanocrystals, which have shown gradual changes in growth modes with decreasing ionic radii and may serve as a model system for studying the underlying principle in the controlled growth of rare-earth nanocrystals. Furthermore, we demonstrate the functionalization of these nanocrystals by means of doping, which have shown visible-to-the-naked-eye green up-conversion emissions and may find application in biological labeling fields.


Rare-Earth-Compound Nanowires, Nanotubes, and …

N2 - Rare-earth-based nanoparticles have attracted increasing attention for their unique optical and magnetic properties. However, their application in bioimaging has been limited to photoluminescence bioimaging and magnetic resonance imaging. To facilitate their use in other bioimaging techniques, we developed a simple, rapid, efficient and general synthesis strategy for 18F-labeled rare-earth nanoparticles through a facile inorganic reaction between rare-earth cations and fluoride ions. The 18F-labeling process based on rare-earth elements was achieved efficiently in water at room temperature with an 18F-labeling yield of >90% and completed within 5 min, with only simple purification by aqueous washing and centrifugation, and without the use of organic agents. The effectiveness of 18F-labeled rare-earth nanoparticles was further evaluated by positron emission tomography (PET) imaging of their in vivo distribution and application in lymph monitoring. In addition, this strategy is proposed for the creation of a dual-model bioimaging technique, combining upconversion luminescence bioimaging and PET imaging.

and Fullerene-Like Nanoparticles: Synthesis, Characterization, ..

Rare-earth-based nanoparticles have attracted increasing attention for their unique optical and magnetic properties. However, their application in bioimaging has been limited to photoluminescence bioimaging and magnetic resonance imaging. To facilitate their use in other bioimaging techniques, we developed a simple, rapid, efficient and general synthesis strategy for 18F-labeled rare-earth nanoparticles through a facile inorganic reaction between rare-earth cations and fluoride ions. The 18F-labeling process based on rare-earth elements was achieved efficiently in water at room temperature with an 18F-labeling yield of >90% and completed within 5 min, with only simple purification by aqueous washing and centrifugation, and without the use of organic agents. The effectiveness of 18F-labeled rare-earth nanoparticles was further evaluated by positron emission tomography (PET) imaging of their in vivo distribution and application in lymph monitoring. In addition, this strategy is proposed for the creation of a dual-model bioimaging technique, combining upconversion luminescence bioimaging and PET imaging.