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. 2016 Feb 18;116(18):10852–10887. doi: 10.1021/acs.chemrev.5b00739

Figure 27.

Figure 27

(A) Sketch representing the CE transformation of NaYF4:Yb,Tm NCs exposed to Gd3+ ions. (B) HAADF image, and (C) EELS 2D elemental maps and line profiles of Gd3+ in NaYF4:Yb,Tm|NaGdF4 core|shell NCs prepared by CE of NaYF4:Yb,Tm nanoparticles with 10-fold Gd3+ ions at 75 °C. Reproduced from [Dong, C.; Korinek, A.; Blasiak, B.; Tomanek, B.; van Veggel, F. C. J. M. Cation Exchange: A Facile Method To Make NaYF4:Yb,Tm-NaGdF4 Core–Shell Nanoparticles with a Thin, Tunable, and Uniform Shell Chem. Mater. 2012, 24, 1297–1305]. Copyright 2012 American Chemical Society.