TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: (III) exhibiting: hole injection- and/or hole transport properties comprise triarylamine-, benzidine-, tetraaryl-para-phenylenediamine-, triarylphosphine-, phenothiazine-, phenoxazine-, dihydrophenazine-, thianthrene-, dibenzo-para-dioxin-, phenoxathiin-, carbazole, azulene-, thiophene-, pyrrole- and furan derivatives, and another oxygen, sulfur or nitrogen-containing heterocycles with high-lying highest occupied molecular orbital; or electron injection- and/or electron transport properties comprises pyridine-, pyrimidine-, pyridazine-, pyrazine-, oxadiazole-, quinoline-, quinoxaline-, anthracene-, benzanthracene-, pyrene-, perylene-, benzimidazole-, triazine-, ketone-, phosphine- and phenazine derivatives, triarylborane and another oxygen, sulfur or nitrogen-containing heterocyclic compounds with low lying lowest unoccupied molecular orbital. (III) exhibit combination of individual elements. (III) modify the emission characteristics to such an extent that electrophosphorescence can be obtained instead of electrofluorescence. (III), that improve the transition from singlet state to triplet state, is class of carbazole- and bridged carbazole dimer unit, ketones, phosphine oxides, sulfoxides, sulfones or silane derivatives. The another structural element that influence the emission color of the polymer, is class of 1,4-phenylene-, 1,4-naphthylene-, 1,4- or 9,10-anthrylene-, 1,6-, 2,7- or 4,9-pyrenylene-, 3,9- or 3,10-perylenylene-, 4,4'-biphenylylene-, 4,4''-terphenylylene-, 4,4'-bi-1,1'-naphthylylene-, 4,4'-toluylene-, 4,4'-stilbenylene-, 4,4''-bisstyrylarylene-, benzothiadiazole- and corresponding oxygen derivatives, quinoxaline-, phenothiazine-, phenoxazine-, dihydrophenazine-, bis(thiophenyl)arylene-, oligo(thiophene-ylene)-, phenazine-, rubrene-, pentacene- and perylene derivatives. (III), that are typically used as a backbone, is class of 4,5-dihydropyrene-, 4,5,9,10-tetrahydro-pyrene-, fluorene-, 9,9'-spirobifluorene-, phenanthrene-, 9,10-dihydrophenanthrene-, 5,7-dihydrodibenzooxepin- and cis- and trans-indenofluorene derivatives. (I) and/or (II) are present at 0.01-50 mol.%. The CC-linking reaction is Suzuki coupling, Yamamoto coupling and Stille-coupling and the CN-linking reaction is Hartwig-Buchwald coupling.    TECHNOLOGY FOCUS - POLYMERS - Preparation (Disclosed): (A) is prepared by polymerization according to Suzuki, polymerization according Yamamoto, polymerization according to Stille or polymerization according to Hartwig-Buchwald. Preferred Components: (A) comprises structural unit (I). (A) is conjugated or partially conjugated polymer. (A) comprises another structural units (III), in addition to the units (I) and/or (II). (A) contains at least two structural units from above different classes, apart from structural units (I) and/or (II), where one of these structural units is hole-conducting units and the other group is an emitting unit. EXAMPLE - Polymer can be synthesized using 2,2'-(2',7'-bis(3-methylnonan-3-yl)-9,9'-spirobi(fluorene)-2,7-diyl)bis(1,3,2-dioxaborolane) (50 mol.%), 2,8-dibromo-6,6-bis-(4-tert-butyl-phenyl)-12,12-dioctyl-6,12-dihydro-indeno(1,2-b)fluorene (46 mol.%), N,N'-bis-(4-bromo-phenyl)-N,N'-bis-(4-butyl-phenyl)-benzene-1,4-diamine (2 mol.%) and 2-bromo-5-((E)-2-(4-bromo-phenyl)-vinyl)-thiophene (2 mol.%) by Suzuki coupling according to WO03/048225A2.