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A series of NaYF4: Yb, Er upconversion nanorods with fixed diameter and controllable length were synthesized by the injection of sodium trifluoroacetate (CF3COONa) mixed with potassium trifluoroacetate (CF3COOK) precursor into a heated solution of ligand. We found that with the increased percentage of CF3COOK, the length of resultant nanorods was increased from ∼40 nm to ∼200 nm whilst the diameter...
By using a facile and versatile physical grinding method, poly (ethylene glycol) (PEG) was coated on oil-soluble Fe 3 O 4 and Fe 3 O 4 –CdSe nanoparticles stabilized by various ligands to render them hydrophilicity. The successful coating of PEG was not only identified by Fourier transform infrared spectroscopy and thermogravimetric analysis, but also confirmed by the...
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