Synthesis of a Macromolecular RAFT Agent Based on an Aromatic Polyamide

An aromatic polyamide with terminal amino groups was synthesized by the polycondensation of terephthaloyl chloride with excess 9,9-bis(4-aminophenyl)fluorene. Its modification yielded a macromolecular bifunctional reversible addition–fragmentation chain-transfer (RAFT) agent capable of participating in the controlled polymerization for the formation of symmetrical B–A–B block copolymers.