Preparation of novel membranes with multiple hydrogen bonding sites and π-conjugated structure for high temperature proton exchange membrane fuel cells

Abstract

A novel poly(dibenzofuran isatin) (PBFI) with π conjugated strucutre was synthesized. Through the facile ring-opening reaction, flexible and hydrophilic side chains with hydroxyl and quaternary ammounium groups were grafted into...

Spacer-engineering construction of continuous proton transport networks for cardo poly(biphenyl indole) high-temperature proton exchange membranes

“…Recently, superacid-catalyzed polyhydroxyalkylation reactions that facilitate the synthesis of high-molecular-weight indole-based polymers with high glass transition temperatures under mild conditions have been reported. 22–27 These polyelectrolytes exhibit high ionic conductivity and stability. Owing to the manipulability and predesigned nature of the indole side chains, they are expected to serve as promising candidates for establishing structure–property relationships in HT-PEMs.…”