Figure 1.

Synthesis and characterization of MFLs@5-ALA/DFO. Transmission electron microscopy images of MFLs (A) (scale bar = 200 nm) and MFLs@5-ALA/DFO (B) (scale bar = 100 nm), and the appearance picture (the inset). (C, D) Size and zeta potential of the MFLs analyzed by DLS, respectively. (E) The stability of MFLs@5-ALA/DFO (F) The encapsulation efficiency (EE, %) and polymer dispersity index (PDI) of MFLs@5-ALA/DFO. (G, H, I) The UV–Vis spectra of DFO complex Fe²⁺ at 430 nm and picture of complexing appearance (the inset). Data are presented as means ± SD (n = 3).