Fig. 1
From: NIR-IIb fluorescence antiangiogenesis copper nano-reaper for enhanced synergistic cancer therapy
(A) Structure of the LDNP and the proposed energy transfer mechanisms in the multi-layer core/shell nanocrystal. (B) Transmission electron microscopy (TEM) images of NaYF4:Yb,Er, NaYF4:Yb,Er@NaGdF4, NaYF4:Yb,Er@NaGdF4@NaNdF4, NaYF4:Yb,Er@NaGdF4@NaNdF4@mSiO2. (Scale bar: 200Â nm). (C) HAADF-STEM image with corresponding EDS elemental mapping images. (D) The N2 sorption isotherms and the corresponding pore size distribution curve before and after coating FA-PEG. (E) Photothermal/downshifting emission spectra of LDNPs under 808 and 980Â nm excitation, respectively. (F) Zeta potential of LM, LMD, and LMDFP. (G) Thermogravimetric analysis of LM, LMD and LMDFP. (H) The chelating capacity of DPA to different metal ions