%0 journal article
%@ 1022-1352
%A Roeder, J., Gomes, D., Ponce, M.L., Abetz, V., Pereira Nunes, S.

%D 2007
%J Macromolecular Chemistry and Physics

%P 467-473 
%R doi:10.1002/macp.200600515
%T Protonation of Sulfonated Poly(4,4’-diphenylether-1,3,4-oxadiazole) Membranes
%U https://doi.org/10.1002/macp.200600515
 
%X band shifts are associated to the interaction between acid groups and oxadiazole ring nitrogen atoms. The IR spectra evidenced the presence of three absorption species (HSO4, SO2 4 and free H2SO4) depending on the sulfuric acid concentration. For the protonated SPOD-DPE membranes, a proton conductivity around 10 mScm1 was reached at 50 8C.