Abstract
AbstractSummary: New hyperbranched poly(arylene ether amides) with fluorine or hydroxy end groups were synthesized from AB2 or A2B type monomers via a nucleophilic aromatic substitution (SNAr) reaction. Monomer syntheses were facilitated by chemo‐selective amidation reactions, and even a direct synthesis of hyperbranched polymer was possible without isolation of the monomer. The resulting hyperbranched poly(arylene ether amides) showed highly branched characteristics (DB = 0.43–0.53), high glass transition temperatures (Tg > 220 °C), and high thermal stability (Td10 > 420 °C). All hyperbranched polymers were readily soluble in aprotic polar solvents such as DMF, DMSO, and NMP regardless of the end groups. Such a similar solubility pattern may result from the high amide contents and longer branching distances between adjacent branching points in these hyperbranched polymer backbones.Polymerization of AB2 and A2B‐type monomers.imagePolymerization of AB2 and A2B‐type monomers.
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