Figure 3From: Folic acid-conjugated silica capped gold nanoclusters for targeted fluorescence/X-ray computed tomography imaging Fluorescence spectrum (A), TGA curve (B), of AuNCs@SiO 2 , AuNCs@SiO 2 -HN 2 and AuNCs@SiO 2 -FA; (C) UV–vis spectra of AuNCs, AuNCs@SiO 2 and AuNCs@SiO 2 -FA; (D) Zeta potential of AuNCs, AuNCs@SiO 2 , AuNCs@SiO 2 -HN 2 and AuNCs@SiO 2 -FA. Back to article page