Conjugated polymers containing heterospiro atoms and their use as electroluminescence materials

A conjugated polymer comprising repeating units of the formula (I), ##STR18## where the symbols and indices have the following meanings:

• .PSI. is an element selected from the group consisting of Si, Ge, Sn and Pb;
• D, E, F.sup.1, G are identical or different and are --CR.sup.1 R.sup.2 --, --O--, --S--, --NR.sup.3 -- or a chemical bond;
• where R.sup.1, R.sup.2, R.sup.3 are identical or different and are each a C.sub.1 -C.sub.20 -hydrocarbon radical or H or R.sup.1 and R.sup.2 can together form an unsubstituted or substituted ring;
• U.sup.1 is --CR.sup.4 .dbd.CR.sup.5 -- or a chemical bond;
• where R.sup.4, R.sup.5 are identical or different and are as defined for R.sup.1, R.sup.2, R.sup.3 or are fluorine or CF.sub.3 ;
• V.sup.1 is as defined for U.sup.1 or is --CR.sup.1 R.sup.2 --, --O--, --S--, --NR.sup.3 --, --SiR.sup.1 R.sup.2 --, SO.sub.2 --, --SO--, --CO--, where R.sup.1, R.sup.2, R.sup.3, R.sup.4, and R.sup.5 are as defined above;
• A is identical or different and is H or a C.sub.1 -C.sub.20 -hydrocarbon radical, which can also contain heteroatoms;
• T is --O--, --S--, --NR.sup.3 --, --CR.sup.1 R.sup.2 --, --CH.dbd.N--, --CA.dbd.CA--, --CH.dbd.CA--, --CH.dbd.CF-- or --CF.dbd.CF--, where R.sup.1, R.sup.2, R.sup.3 and A are as defined above;
• K.sup.1, Q are identical or different hydrocarbon radicals which may contain heteroatoms and have conjugated electron systems;
• where K.sup.1, L, M, and Q can also be joined to the groups A in the respective ortho positions to form a ring which is saturated, partially unsaturated or fully unsaturated;
• M, L are H, Br, Cl, F, CN, NO.sub.2 or CF.sub.3, or a straight-chain or branched alkyl group having from 1 to 22 carbon atoms, where one or more --CH.sub.2 -- groups can be replaced by --O--, --CO--O--, --O--CO-- and one or more hydrogen atoms can be replaced by F;
• or
• m, n are identical or different and are 0, 1, 2, 3 or 4;
• with the following polymers being excepted:
• ##STR19## wherein:
• .PSI..dbd.Si,
• V.sup.1 .dbd.CO.