| abstract |
The present invention provides a method for producing polyarylene having a sulfonic acid group which can safely control the amount of sulfonic acid group introduced into the polymer and the introduction position thereof, and polyarylene having a sulfonic acid group, and polyarylene suitably used in the production method. And it provides an aromatic sulfonic acid ester derivative represented by the formula (1). The present invention also provides a polymer solid electrolyte and a proton conductive membrane including the polyarylene having the sulfonic acid group.n n n In the method for producing a polyarylene having a sulfonic acid group, the aromatic compound including at least the derivative of the formula (1) is subjected to coupling polymerization to hydrolyze the obtained polyarylene.n n n n n n n n n n Wherein X is a halogen atom excluding fluorine, -OSO 3 CH 3 Or-OSO 3 CF 3 , A and B are divalent organic groups, R a Is a hydrocarbon group of 4 to 20 carbon atoms, Ar is a substituent -SO 3 R b Where R b Is An aromatic group having 4 to 20 carbon atoms, m and n are 0 to 10, m + n is 1, and k is 1 to 4. |