A novel guanidinium grafted poly(aryl ether sulfone) for high-performance hydroxide exchange membranes

Abstract
A novel poly(aryl ether sulfone) ionomer containing hexaalkylguanidinium groups was synthesized, and membranes formed from this polymer displayed large ionic clusters, high hydroxide conductivity, and excellent solubility in low boiling point water-soluble solvents such as ethanol and methanol.