Skip to main content
. Author manuscript; available in PMC: 2017 Aug 17.
Published in final edited form as: Angew Chem Int Ed Engl. 2017 Mar 13;56(15):4314–4319. doi: 10.1002/anie.201612647

Figure 1.

Figure 1

Renal-clearable AuNPs coated with both glutathione and cysteamine (GC-AuNPs) were designed for targeting tumor acidity. A) TEM image (scale bar: 5 nm) and core size and hydrodynamic diameter (HD) distributions of the GC-AuNPs. Core size: 2.3 ± 0.4 nm; HD: 2.9 ± 0.3 nm. B) Absorption, excitation, and emission spectra of GC-AuNPs in aqueous solution. C) Bright-field and fluorescence images of live HeLa cells incubated with GC-AuNPs at pH 7.4 and 6.5 in PBS at 25°C for 10 min (scale bar: 20 μm). D) Luminescence intensity of cell membranes incubated with GC-AuNPs at different pH values in PBS.