The present invention provides a fluoroalkane derivative represented by the following general formula (1): R-SO-Ar-O-R (1) wherein Ar denotes a substituted or nonsubstituted divalent aromatic group having 8 to 30 atoms of the nucleus(es), Rdenotes a satura...

A polymer which has a flexible structure in its main chain and thus exhibits a high toughness and can difficultly be deteriorated in its mechanical properties and thermal properties even when sulfonated, a sulfonic acid group-containing polymer obtained by...