| abstract |
A method for producing a polyarylene having a sulfonic acid group and a polyarylene having a sulfonic acid group, wherein the amount and position of the sulfonic acid group to be introduced into the polymer can be easily controlled, are preferably used in the production method. To provide polyarylene and aromatic sulfonic acid ester derivatives. To provide a solid polymer electrolyte and a proton conductive membrane comprising the above-mentioned polyarylene having a sulfonic acid group. The aromatic sulfonic acid ester derivative is represented by the following formula (1); Embedded image (X is a halogen atom except fluorine, —OSO 3 CH 3 or —OSO 3 CF 3 , A and B are divalent organic groups, Ra is a hydrocarbon group having 4 to 20 carbon atoms, and Ar is a substituent —SO 3 R b (R b is a C 4-20 hydrocarbon group) aromatic group, m and n are 0-10, m + n ≧ 1, and k is 1-4.) In a method for producing a polyarylene having a sulfonic acid group, an aromatic compound containing at least a derivative of the formula (1) is subjected to coupling polymerization, and the obtained polyarylene is hydrolyzed. [Selection diagram] None |