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Ionic liquid mediated synthesis and surface modification of multifunctional mesoporous Eu:GdF3 nanoparticles for
Sonia Rodriguez-Liviano1, Nuria O Nuñez, Sara Rivera-Fernández
1Instituto de Ciencia de Materiales de Sevilla (CSIC-US), Isla de La Cartuja, 41092 Sevilla, Spain.
Langmuir : the ACS Journal of Surfaces and Colloids
|February 14, 2013
Summary
Researchers developed novel europium(III)-doped gadolinium(III) fluoride (Eu:GdF3) nanoparticles. These mesoporous nanoparticles exhibit unique luminescent and magnetic properties, showing potential for advanced biotechnological applications.
Area of Science:
- Materials Science
- Nanotechnology
- Inorganic Chemistry
Background:
- Gadolinium fluoride (GdF3) nanoparticles are explored for biomedical applications.
- Developing multifunctional nanoparticles with tailored magnetic and luminescent properties is crucial.
Purpose of the Study:
- To synthesize multifunctional europium(III)-doped gadolinium(III) fluoride (Eu:GdF3) nanoparticles.
- To characterize their structural, magnetic, and luminescent properties.
- To evaluate their potential as in vitro biolabels and MRI contrast agents.
Main Methods:
- Precipitation synthesis of Eu:GdF3 nanoparticles at 120 °C using lanthanide chlorides and an ionic liquid as fluoride source.
- Characterization of nanoparticle structure, porosity (BET surface area), and size (~85 nm).
- Evaluation of luminescent and magnetic relaxivity properties, followed by functionalization with aspartic-dextran polymers.
Main Results:
- Quasispherical, polycrystalline Eu:GdF3 nanoparticles (~85 nm) with a hexagonal structure were synthesized.
- The nanoparticles exhibited mesoporosity (3.5 Å pores) and a high BET surface area (75 m²/g).
- Eu:GdF3 nanoparticles demonstrated promising luminescent and magnetic relaxivity, with functionalized versions showing negligible toxicity to Vero cells.
Conclusions:
- A novel synthesis route for multifunctional Eu:GdF3 nanoparticles was established.
- These nanoparticles possess desirable properties for in vitro optical biolabeling and MRI contrast agents.
- The biocompatibility of functionalized nanoparticles supports their suitability for biotechnological applications.