The Ytterbium/ Thulium doped NaYF4 nanoparticles were synthesized by a modified thermal-decomposition method. Currently this product is spherical with a diameter from 10-15nm. The particles were chemically stabilized with hydrophobic properties and can be dispersed in hexane or any other non-polar solvents, such as toluene and cyclohexane, to form a stable single phase colloidal solution. The emission intensity is higher than most of the fluorescence dye and could be noticed by naked eyes under regular in-door environment. The life time of the particles are close to unlimited due to the special mechanism. The fluorescence can’t be quenched by heat, surface modification, UV exposure, acid/base or aggregation. The particles can be easily modified to hydrophilic surface.
Size: 10-15 nm
Surface Modification: hydrophobic
Dispersion: Hexane, or other non-polar solvents
Excitation: 980 nm
Emission(duel): 450 nm, 635 nm