Figure 1.
Schematic of the coupling reaction between folic acid (FA) and terpolymer-based nanoparticles (NPs). Activation of carboxylic groups of FA (chemical structure shown at the top right) by EDC/NHS; formation of covalent bonds among activated esters of FA and tertiary amine of DMAEMA monomer units of terpolymer-based nanoparticles.
