Size-Dependent Photodynamic Activity of Gold Nanoparticles Conjugate of Water Soluble Purpurin-18-N-Methyl-D-Glucamine

Figure 4

TEM images of the PS-GNPs conjugates 2a–2e. The scale bars are 50 nm and the inset scale bars are 10 nm.

(a)

(b)

(c)

(d)

(e)