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Figure 2 | Nanoscale Research Letters

Figure 2

From: Magnetic Iron Oxide Nanoparticles: Synthesis and Surface Functionalization Strategies

Figure 2

Scheme for the magnetic NPs functionalization procedure described in this work. Steps 1A and 1B: ligand-exchange reactions. Step 2: acylation of hydroxyl groups to prepare ATRP surface initiators. Step 3A: surface-initiated ring opening polymerization of l-lactide. Steps 3B: surface-initiated ATRP. Step 4: deprotection or additional reaction after polymerization. Step 5: graftiong of endfunctionalized PEG chains onto the nanoparticle surface using amidation chemistry. From [57]

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