POLYNUCLEAR AROMATIC SULFONIC ACID DERIVATIVE, SULFONATED POLYMER, POLYMERIC SOLID ELECTROLYTE AND PROTON-CONDUCTIVE FILM

摘要

PROBLEM TO BE SOLVED: To provide a sulfonated polymer exhibiting excellent hot-water resistance and mechanical properties, a polymeric solid electrolyte that is composed of the polymer and has a high proton conductivity, and a proton-conductive film.

SOLUTION: The sulfonated polymer has a constitutional unit represented by formula (A'). In formula (A'), t is an integer of 1-4; A is a direct bond, -CO-, -SO2- or -C(CF3)2-, or the like; and at least one of R1-R4is a substituent group represented by formula (B'). In formula (B'), Y is -CO- or -SO2-; Z is -O-, -S- or a direct bond; and Ar' is a phenyl or naphthyl group bearing an SO3H group.

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