4.5 Fluorescence resonance energy transfer system enhances light energy capture efficiency to enhance PDT
Fluorescence resonance energy transfer (FRET)-based drug delivery systems for indirect activation of PS drugs via donor fluorophores have been extensively investigated in the field of PDT. The transfer of excitation energy from the donor to the PS drug can significantly improve its light capture efficiency and expand the range of light sources. Thus, the efficiency of 1O2production of PS is greatly improved, which ultimately improves the photodynamic therapy effect of photosensitizers(Cao et al. 2018; Huang et al. 2020; Lovell et al. 2011). (Fig. 9)