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Polymerization kinetics of both on-surface PET-RAFT polymerizations of HPMA. Route A3: polymerization on RAFT agent-modified surfaces that were obtained by reacting NHS-RAFT with surface-immobilized PLL (orange). Route B2: polymerization on RAFT agent-modified surfaces that were obtained by the self-assembly of a PLL–RA macroinitiator (blue). Thicknesses were measured in duplicate by ellipsometry.
