Triphenylene-Enchained Perfluorocyclobutyl Aryl Ether Polymers: A Modular Synthetic Route to Processable Thermoplastics Approaching Upper Limit T_g and Photostability

Triphenylene-containing trifluorovinyl ether monomers prepared from 2,3-disubstituted-bis-1,4-(p-bromophenyl)triphenylene core building blocks undergo thermal step-growth polymerization (Ph2O, 180 °C), affording perfluorocyclobutyl polymers with unprecedented glass-transition temperatures (up to 295 °C), excellent high thermal-oxidative stabilities, and solution processability. The modular synthetic route provides access to a series of...