Hierarchical Structures with Double Lower Disorder-to-Order Transition and Closed-Loop Phase Behaviors in Charged Block Copolymers Bearing Long Alkyl Side Groups

In this work, poly(ionic liquid) (PIL)-containing block copolymers (BCPs), poly(ethylene oxide)-b-poly(1-((2-acryloyloxy)ethyl)-3-docosylimidazolium) with different counterions (PEO-b-P(AOEDIm-X), X = Br or PF6), were synthesized. Hierarchical structures, including the microphase-separated structure between the PEO and PIL blocks at the first level, the segregated substructure between the long alkyl side groups and the other parts of the PIL...