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<p>The use of ionic liquid-based colloids at elevated temperatures is one of their most promising fields
of application. However long term stability on the whole range of temperature is mandatory. First
a detailed study on colloidal dispersions of iron oxide nanoparticles in EMIM TFSI is performed at
room temperature in order to determine the best solid/liquid interface. The previously identified
key parameters are tuned: the surface charge density and the nature of the counterions. Here a
sulfonate based imidazolium ion is chosen. In a second step, the thermal stability of these nanoparticle
dispersions is analysed on the short and long term up to 473 K (200◦C) combining dynamic light scattering
(DLS), small angle X-ray/neutron scattering (SAXS/SANS) and thermogravimetric analysis (TGA).
Ionic liquid-based colloidal dispersions of iron oxide nanoparticles in EMIM TFSI stable in the long
term can be obtained at least up to 473 K and nanoparticle concentrations of 12 vol% (≈30wt%)
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Effect of Surface Chemistry and Associated Protein Corona on the Long-Term Biodegradation of Iron Oxide Nanoparticles In Vivo
