| abstract |
Proton-conducting material having a degree of crystallinity of at least 30%, which comprises: ni) at least one organic compound having the formula (I), n n R 1 (R 2 ) m (R 3 ) n (I) n nwherein n- R 1 is an optionally fused aromatic, cyclic or polycyclic moiety comprising 1 to 200 carbon atoms, able to have 3 to 60 substituents; n- the substituents R 2 are identical or different and are each a group comprising at least one phosphonic acid moiety; n- the substituents R 3 are identical or different and are each hydrogen, a halogen atom, or a group having 1 to 60 carbon atoms; n- m is a number within the range 3 to 60; n- n is a number within the range 0 to 57; n- m+n is within the range of 3 to 60; n- said compound comprises at least 4, optionally fused, aromatic moieties, and n nii) crystal water. |