Fig. 7. (a) Fluorescence spectra and (b) normalized intensity of P-ICG after different incubation time; optical microscopy image of P-ICG under white light (c) and NIR channel (d), where red fluorescence was generated from ICG; (e) fluorescent imaging of P-ICG with different concentrations (f) the corresponding standard curve of fluorescent signal intensities as a function of P-ICG with different concentrations.
