Probing Proton Mobility in Polyvinazene and its Sulfonated Derivatives Using 1H Solid‐State NMR

Abstract The proton dynamics of PV and its sulfonated derivatives have been studied using high‐resolution solid state 1 H MAS NMR. Variable temperature experiments were used to determine the activation energy for transportation of hydrogen bonded protons, found to be 22 ± 1 kJ · mol −1 for PV and 13 ± 1 kJ · mol −1 for PV–B25. The proton exchange between sulfonic acid group and vinazene ring observed from both variable temperature experiments …