radicals have the following meanings x y and z denote identical or different divalent radicals o s n or c u2550 c with the proviso that at least one of the radicals x y and z is not a radical of the formula c u2550 c and wherein r 9 is a hydrogen atom a branched or unbranched c 1 to c 8 alkyl radical or an optionally substituted phenyl radical and r 10 and r 11 are in each case identical or different radicals which have one of the meanings of r 1 r 7 and r 8 denote identical or different radicals that is to say hydrogen atoms or c 1 to c 6 alkyl or phenyl radicals and n m and o denote identical or different integers with a value of from 1 to 10 also provided are a process for the preparation of these compounds processes for their polymerization novel polymers which can be prepared in this manner and the use of the polymers application_number US 74693291 A description the polarization according to formula 1 of the rings containing the radicals x y and z has an effect on the optical and electrical properties if the highest possible electrical conductivities are required compounds.