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Nano Convergence
Fig. 4 | Nano Convergence

Fig. 4

From: Metal complexation-mediated stable and biocompatible nanoformulation of clinically approved near-infrared absorber for improved tumor targeting and photonic theranostics

Fig. 4

a-c Photostability of ICG-Fe NPs. UV/Vis absorption spectra of a) free ICG and (b ICG-Fe NPs (containing the same ICG content) depending on the laser irradiation time (785 nm, 1 W), normalized with the initial maximum absorbance; the insets present the representative photographs of free ICG and ICG-Fe NPs solution at each irradiation time. c PL intensity (at 820 nm) of free ICG and ICG-Fe NPs as a function of laser irradiation time (785 nm, 1 W). d Effect of FBS on the fluorescence intensity of free ICG and ICG-Fe NPs at 820 nm. e In vitro PA images and f mean PA intensities of free ICG and ICG-Fe NPs at different concentrations

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