Engineering Upconversion Nanoparticles for Biomedical Imaging and Therapy
Fig. 22.1 a TEM image of ~8 nm-sized β-NaLuF4:Gd/Yb/Tm. b In vivo imaging of a black mouse after subcutaneous injection of citric acid-modified sub-10 nm-sized β-NaLuF4:Gd3+/Yb3+/Tm3+ and citric acid-modified β-NaYF4:Yb/Tm when detected from…