For the chain extension of PS with PDMA involving P5 and P6, and P7 analogously but with different molar equivalencies, the following components were added to a RBF: PS-based macro-RAFT agent (1 eq., 11.4 g), AIBN initiator (0.1 eq., 34.6 mg), DMA (25 eq., 5.6 mL), and anyhdrous dioxane (15 ml) with an internal standard of DMF (10 drops). Similarly, the solution was deoxygenated by performing Argon degassing for 25 min and protected with a Parafilm afterwards preventing any oxygen leaking. The flask was immersed in an oil bath at 70 °C for 24 hours. The polymerization reaction was stopped by removing the septum from the RBF and exposing it to an oxygen atmosphere. The block copolymer was isolated by repeating precipitation using cold Hexane (50 mL) until 5 % or less of monomer signals were remaining from the NMR spectrum (see 18). The resulting polymer was dried under high vacuum pump for 24 hours and further with a high vacuum oven at 40 °C over 24 hours and characterized by SEC and 1 H NMR analysis (see 18 and 10).