Proton‐Conducting Properties of Acid‐Doped Poly(glycidyl methacrylate)‐1,2,4‐Triazole Systems

Abstract 1,2,4‐triazole‐functional PGMA polymers have been synthesized and their anhydrous proton‐conducting properties were investigated after doping with phosphoric acid and triflic acid. PGMA was prepared by solution polymerization and then modified with 1 H ‐1,2,4‐triazole (Tri) and 3‐amino‐1,2,4‐triazole (ATri). FT‐IR, 13 C NMR and elemental analysis verify the high immobilization of the triazoles in the polymer chain. Phosphoric‐acid‐doped polymers showed lower T g and higher proton conductivities. PGMA‐Tri 4 H 3 PO 4 showed a maximum water‐free proton conductivity of approximately 10 −2 S · cm −1 while that of PGMA‐ATri 2 H 3 PO 4 was 10 −3 S · cm −1 . The structure and dynamics of the polymers were explored by 1 H MAS and 13 C CP‐MAS solid‐state NMR. magnified image