TECHNOLOGY FOCUS - POLYMERS - Preparation (Disclosed): Preparation of the conjugated polymer and dendrimer comprises polymerizing (I) by a polymerization reaction, which leads to a C-C-bonding, based on Suzuki-, Yamamoto- or Stille coupling. Preferred Components: (I) is conjugated to the main chain of the polymer. (I) is incorporated into the side chain of the polymer. (I) is of formula (Ia)-(Ik). The structural element is fluorenylene, spirobifluorenylene, dihydrophenanthrenylene, tetrahydropyrenylene, stilbenylene, bisstyrylarylene, 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, 2,7- or 3,6-phenanthrenylene, which is present in at least 50 mol.% of the polymer. The structural element is 4,4'-biphenylylene, 4,4"-terphenylylene or 4,4'-bi-1,1'-naphthylylene, triarylamine, triarylphosphine, benzidine, tetraarylene-para-phenylene diamine, phenothiazine, phenoxazine, dihydrophenazine, thianthrene, dibenzo-p-dioxine, phenoxathiin, carbazole, azulene, thiophene, pyrrole or furan, or pyridine, pyrimidine, pyridazine, pyrazine, anthracene, triarylborane, oxadiazole, quinoline, quinoxaline or phenazine, which is present in 2-30 mol.% of the polymer. The amount of (I) is 1-10 mol.% or 0.01-1 (preferred) mol.%.V1 = a covalent compound in the polymer or dendrimer; andv = 0 or 1. Preferred Definitions:    R1-R4 = H, F, Cl, N(R)2, Si(R)3,B(R)2, linear, branched or cyclic 1-22C alkyl (optionally substituted by F, Cl, Br, I or CN), where one or more non-adjacent CH2-group is substituted by -C(R0)=C(R0)-, -C?=C-, -N(R0)-, -Si(R0)2-, -O-, -S-, -CO-, -CO-O-, -O-CO-, -S-CO-, -CO-S-, -O-CO-O- (where O- and/or S-atoms are not connected directly), or optionally R substituted 5-40C aryl, where one or more C atoms are substituted by O, S or N;    Ar1-Ar3 = phenyl or phenylene (both optionally replaced by R5); and    Ar4 = phenylene, 4,4'-biphenylene, 9,9-disubstituted fluoren-2,7-diyl, or 6,6,12,12-tetrasubstituted indenofluoren-2,8-diyl or spirobifluoren-2,7-diyl (all substituted by R5).    EXAMPLE - Phosphonate (41 g) was dissolved in dry dimethyl formamide (DMF) (400 ml) at 5degreesC, and was reacted with tert.butoxy sodium (28 g). The obtained mixture, after 30 minutes, was dissolved in triphenylamine aldehyde (49 g) in dried DMF (200 ml). The reaction mixture was worked up to give (4-bromophenyl)-(4-(2-(4-bromophenyl)-vinyl)-phenyl)-(4-tert.-butyl-phenyl)-amine (A) (43 g). (A) was polymerized by Suzuki coupling to give the polymer.