Details of the synthesis can be found in the previous publication. In short, pMETAC was polymerized by atom-transfer radical polymerization (ATRP) in methanol with CuBr2 BiPy, AscA and EBiB as an initiator. Everything was degassed by three freeze-thawing cycles and the reaction was performed under Argon for 18hrs at 25°C. The polymer was purified by repeated Aceton precipitation, centrifugation, and redissolution in methanol cycles. The pellet after the last centrifugation cycle was dried in an oven at 40°C until constant weight. The purified pMETAC was characterized with gel-permeation chromatography (GPC) as described before. 10