POLYARYLENE ETHER COMPOUND CONTAINING SULFONIC ACID GROUP, COMPOSITION CONTAINING SAME, AND METHOD FOR MANUFACTURING THOSE

A polyarylene ether-based compound according to the present invention includes polymer components represented in general formula (1) and general formula (2): wherein Ar indicates a divalent aromatic group, Y indicates a sulfone group or a ketone group, X indicates H or a monovalent cation species, and Ar' indicates a divalent aromatic group.