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Beilstein J. Nanotechnol. 2017, 8, 1815–1824, doi:10.3762/bjnano.8.183
Figure 1: SEM images of the core NaGdF4:Yb,Er (A) and core@shell NaGdF4:Yb,Er@NaGdF4 (B) nanoparticles. The i...
Figure 2: XRD pattern of NaGdF4:Yb,Er core only (a), and NaGdF4:Yb,Er@NaGdF4 core–shell (b) nanoparticles.
Figure 3: The structure of (a) oleic acid (OA) and (b) Tween 80. FTIR spectra of (c) pure Tween 80, (d) NaGdF4...
Figure 4: (a) Upconversion luminescence spectra of Tween 80-coated UCNPs upon 980 nm excitation [28] and (b) ener...
Figure 5: Magnetic resonance (MR) signal intensity (SI) plot of core (red dots) and core–shell (black squares...
Figure 6: A) Confocal images of MDA-MB-231 cells after 24 h treatment with Tween 80-coated core–shell UCNPs (...
Figure 7: Formation of water-soluble core and core–shell UCNPs by coating with Tween 80.