Poly(arylene ether sulfone)s ionomers with pendant quaternary ammonium groups for alkaline anion exchange membranes: Preparation and stability issues

▶ A modified reaction procedure is developed for the polycondensation of DABP. ▶ QNPS-OHs demonstrate excellent solubility and high ionic conductivity. ▶ QNPS-OHs show more alkaline stable than our previous reported F-QNPS-OHs.