Figure 1

Steps of SPIONs functionalization with DHP. (A) Upper phase: hexane, DHP, iron oxide nanoparticles. Lower phase: water. (B) Solution after phase transfer of DHP from hexane to water. (C) Solution after functionalization. (D) 12 h after functionalization. (E) Functionalized iron oxide nanoparticles after purification. (F) molecular structure of dihexadecyl phosphate (DHP).