摘要 |
The present invention relates to functionalized polyazoles comprising recurring imidazole units of the general formula where the radicals Ar, Ar<SUP>1 </SUP>and Ar<SUP>2 </SUP>are tetravalent, divalent or trivalent aromatic or heteroaromatic groups, Y is a bond or a group having from 1 to 20 carbon atoms, v is an integer from 1 to 10 and Z is a group of the general formula where R<SUP>1 </SUP>and R<SUP>2 </SUP>are each, independently of one another, a hydrogen atom or a group having from 1 to 20 carbon atoms, characterized in that the polyazole is soluble in organic solvents. Furthermore, the present invention relates to intermediates and to a process for preparing the polyazoles. Furthermore, the present invention describes polymer electrolyte membranes and fuel cells in which the polyazoles of the invention are present.
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