Figure 2
From: All organic nanomedicine for PDT–PTT combination therapy of cancer cells in hypoxia
Characteristics of PTA NPs. (a) Photographs showcasing the dark blue PcBu4 PTA and dark brown OBNC PTA suspensions. (b) Normalized absorbance spectra of PcBu4 PTA and OBNC PTA suspensions. (c) TEM images of PcBu4 NPs with a scale bar representing 50 nm. (d) Photothermal properties of PcBu4 PTA when illuminated with a 671 nm laser at 6.4 W/cm2 for 15 min.
