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(A) Synthesis of the diblock polymer pDbB via a two step RAFT polymerization. (B) A pH-sensitive derivative of pSMA was obtained by RAFT polymerization followed by subsequent reactions to modify 60% of the anhydride groups with pentylamine. R = CCNCH3C2H4CO2H, Z = SCSSC12H25, x ∼ 46, y ∼ 15 (∼ 31 for Figure 5), Z’ = SCSC6H5 n ∼ 190.
