Fig. 4
In vitro photothermal conversion efficiency of PLT-PPy/Riv NPs. a In vitro thermal imaging and (b) temperature change of PBS, SDS-PPy/Riv NPs, PLT-PPy NPs and PLT-PPy/Riv NPs under 808 nm laser irradiation within 10 min (n = 3). c The photothermal stability of PLT-PPy/Riv NPs under NIR irradiation using the 808 nm laser (2.22 W/cm2, 1200 s for each cycle) for three cycles. d Natural cooling curve of PLT-PPy/Riv NPs under laser irradiation. e Linear fit of time-Inθ from the cooling period of PLT-PPy/Riv NPs. f In vitro release of Riv from PLT-PPy/Riv NPs under laser or non-laser irradiation. Statistical analysis was via one-way ANOVA with GraphPad Prism 8.0; *P < 0.05