A summary of the characterization data obtained for the homopolymer PS and block copolymer PS-b-PDMAEA are shown in the table S2 below. DPn gives the degree of polymerisation (block length) as calculated via 1 H NMR measurements. Monomer conversion was determined via 1 H NMR. Mn,T shows the theoretical molecular weight calculated via 1 H NMR monomer conversion. Mn shows the number average molecular weight determined via SEC analysis. Ð represents the dispersity of the molecular weight distribution obtained via SEC analysis. Since SEC is inherently incorrect with regards to absolute molecular weights, the individual block lengths were determined via NMR. In Figure , from the 1 H NMR for PS, after integrating the peaks with reference to the end group protons associated with the DoPAT RAFT agent (d),