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)