Fig. 3
Photothermal characterization of the IBC-PB composites: (a) absorbance spectra scanning and (b) photothermal effect of the IBC-PB composites in the series of K4[Fe(CN)6] concentrations (0, 0.25, 0.5, 0.75, and 1 mmol of K4[Fe(CN)6] at an intensity level of 1 W cm−2 for five minutes. c Validation of the photothermal ability of the IBC-PB composites during five cycles of laser irradiation at an intensity level of 1 W cm−2 for 200 min. d Absorbance spectra comparison of IBC-PB composites with 0.75 mmol of K4[Fe(CN)6] before and after five repeated laser irradiation cycles. (IBC-PB IBC-PB composites)