Fig. 2
Characterization of BSA-templated NPs. a TEM images of BSA-Au, BSA-CuS, and BSA-Gd2O3 NPs. b Hydrodynamic sizes of BSA-Au, BSA-CuS, and BSA-Gd2O3 NPs. Inset: The photographs of obtained BSA-templated NPs dispersed in water (4 mg/mL). c Fluorescence spectra of BSA-Au NPs with different concentrations. Inset: The photographs of BSA-Au NPs solution (4 mg/mL) under ultraviolet light. d Absorption spectra of BSA-CuS NPs with different concentrations. e T1-weighted magnetic resonance images of BSA-Gd2O3 NPs and Gd-DTPA aqueous solutions with different concentrations of Gd