Schematic illustration of polymerization-induced microphase separation process: a macroCTA (PBA-CTA) is chain extended withN,N-diethylacrylamide (DEAm) and pentaerythritol tetraacrylate (PETA) to form PBA-b-P(DEAm-stat-PETA) network with nanodomains due to the thermodynamic incompatibility between PBA-CTA and P(DEAm-stat-PETA) blocks.