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

Figure 6

Comparative cell viability (%) of PS1 (3.2 μg/mL) and the PS-GNPs conjugates 2a–2e against A549 cells by photo irradiation after 3 h, 24 h, and 48 h incubation times.