Fig. 4
Antibacterial effects of sPDMA@ICG NPs with laser irradiation in Pg. a Infrared thermal images and b temperature changes of bacterial suspensions incubated with PBS, sPDMA, free ICG and sPDMA@ICG NPs for 3 h, followed by laser irradiation. c Mean fluorescence intensities (MFI) of DCF in bacterial suspensions after various processions. d Antibacterial activities of free ICG and sPDMA@ICG NPs with and without laser irradiation at different ICG concentrations. e TEM images of bacteria after processions of PBS (the control), sPDMA@ICG NPs with and without laser irradiation. F Photos of bacterial colonies after various processions. In the experiments for (a, b, c, e and f), the ICG concentration was 10 μg/mL and the laser irradiation was carried at 808 nm at 2 W/cm2 for 10 min. ## indicates p < 0.01 for comparison between two groups