Fig. 3From: Core–shell polymeric nanoparticles co-loaded with photosensitizer and organic dye for photodynamic therapy guided by fluorescence imaging in near and short-wave infrared spectral regionsFluorescence spectra of polySt-poly(NIPAM-co-AA) NPs post-loaded with HPPH and dyes. a HPPH fluorescence emission (excitation at 400 nm). b Fluorescence decays for HPPH in organic solvent (DMF) or in NF, post-loaded alone or with two different NIRFDs. c fluorescence of NIRFDs post-loaded to NF alone or in combination with HPPH (excitation at 808 nm)Back to article page