TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation (Claimed): Preparation of (I) comprises: reacting (hetero)aryl compounds of formula (Ar1-A) (aa) with (hetero)aryl compounds of formula (A-Ar2-A) (bb) in an organometallic coupling reaction to give (hetero)aryl compounds of formula (Ar1-Ar2-A) (cc); and reacting (cc) with fused (hetero)aryl compounds of formula (dd) in a further organometallic coupling reaction.A = reactive group comprising I, Br, Cl, F, O-tosylate, O-triflate, O-sulfonates, boric acid, boric acid esters, partially fluorinated silyl groups, diazonium groups or organotin compounds. SPECIFIC COMPOUNDS - 290 Compounds (I) are disclosed e.g. 5-(10-(3-benzo(a)anthracen-4-yl-phenyl)-anthracen-9-yl)-N,N,N',N'-tetra-p-tolyl-benzen-1,3-diamine of formula (Ia), 5-(10-(4-benzo(a)anthracen-4-yl-phenyl)-anthracen-9-yl)-pyrimidine, 4-(4-(10-phenyl-anthracen-9-yl)-phenyl)-benzo(a)anthracene, 4-(3-(10-phenyl-anthracen-9-yl)-phenyl)-benzo(a)anthracene and 2-(chrysen-6-yl)-5-(10-(pyridin-2-yl)anthracen-9-yl)pyridine.    EXAMPLE - 5-Anthracen-9-yl-N,N,N',N'-tetra-p-tolyl-benzen-1,3-diamine (130 mmole) was dissolved in dichloromethane (350 ml) in a flask (2 l) and the solution was degassed by passing nitrogen gas. Then N-bromosuccinimide (136 mmole) was added and the suspension was stirred overnight at room temperature under exclusion of light. The reaction mixture was then concentrated on a rotary evaporator to dryness and the residue was mixed with ethanol (300 ml), stirred at room temperature for 30 minutes, and worked up to give 5-(10-bromo-anthracen-9-yl)-N,N,N',N'-tetra-p-tolyl-benzen-1,3-diamine as a yellow solid. 5-(10-Bromo-anthracen-9-yl)-N,N,N',N'-tetra-p-tolyl-benzen-1,3-diamine (100 mmole) was dissolved in anhydrous diethyl ether (500 ml) in a flask (2000 ml), and cooled to 0-5 degrees C. Then n-butyl lithium (2.5 M, 110 mmole) was added dropwise. The mixture was stirred at room temperature for 2 hours. Then, the reaction mixture was cooled to -75 degrees C and trimethyl borate (130 mmole), diluted with diethyl ether (25 ml) was added in 1 minute under stirring. The mixture was stirred at -75 degrees C for 1 hour, and heated to 10 degrees C. Then the mixture was added to water (250 ml) and the phases were separated, and the organic phase was concentrated. The obtained solid was washed with hexane and dried to give 5-(10-boronic acid-anthracen-9-yl)-N,N,N',N'-tetra-p-tolyl-benzen-1,3-diamine. 4-(3-Bromo-phenyl)-benzo(a)anthracene (85 mmole), 5-(10-boronic acid-anthracen-9-yl)-N,N,N',N'-tetra-p-tolyl-benzen-1,3-diamine (89.6 mmole) and potassium phosphate (160 mmole) were added in a flask (1 l), and then toluene (200 ml), water (200 ml) and dioxane (75 ml) were added. The obtained mixture was stirred under argon for 30 minutes. Then, tris-o-tolylphosphine (4.8 mmole) was added, stirred and then palladium(II) acetate (0.8 mmole) was added. The mixture was heated under reflux (oil bath 120 degrees C) for 20 hours, and worked up to give 5-(10-(3-benzo(a)anthracen-4-yl-phenyl)-anthracen-9-yl)-N,N,N',N'-tetra-p-tolyl-benzen-1,3-diamine (yield 37 g (46%)).