TECHNOLOGY FOCUS - ELECTRONICS - Preferred Device: The device (D1) is an organic thin-film transistor comprising a substrate; an insulating layer; a gate electrode; a source electrode; a drain electrode; and an organic semiconductor layer containing an electroactive compound (C1), where the insulating layer, the gate electrode, the semiconductor layer, the source electrode and the drain electrode can be arranged in any sequence provided that the gate electrode and the semiconductor layer both contact the insulating layer, the source electrode and the drain electrode both contact the semiconductor layer and the electrodes are not in contact with each other. The device (D1) comprises at least one electroactive layer positioned between two electrical contact layers, where the electroactive layer of the device includes the compound (C1). The device (D1) comprises anode, hole injection layer, photoactive layer, electron transport layer, and cathode, where at least one of the photoactive layer and the electron transport layer comprises the compound (C1), where the photoactive layer comprises a host material having unit (I) and an organometallic electroluminescent dopant. In the device (D1), the electron transport layer comprises the compound (C1).    TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preparation: No general method for the preparation of the compound (C1) is given.    TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The hole injection layer comprises electrically conductive polymer or fluorinated acid polymer. Preferred Definitions:    c=greater than 0;    Q'=pyridine, pyrimidine, triazine, carbazolyl, dibenzopyran, dibenzofuran, dibenzothiophene, phenyl, naphthyl, diphenylcarbazolyl, triphenylsilyl, pyridyl or their deuterated analogs.    SPECIFIC COMPOUNDS - 17 Compounds are disclosed as compound (C1) e.g. 9-(3-(4,6-diphenyl-(1,3,5)triazin-2-yl)-phenyl)-3,6-diphenyl-9H-carbazole of formula (Ia), 2,4-bis-biphenyl-4-yl-6-(4-naphthalen-1-yl-phenyl)-(1,3,5)triazine, 2,4-bis-biphenyl-4-yl-6-(4'-naphthalen-1-yl-biphenyl-3-yl)-(1,3,5)triazine, 2,4-bis-biphenyl-4-yl-6-(4-triphenylsilanyl-phenyl)-(1,3,5)triazine, and 2,4-bis-biphenyl-4-yl-6-(4'-(5-methyl-pyridin-2-yl)-biphenyl-4-yl)-(1,3,5)triazine.    EXAMPLE - 2-Chloro-4,6-diphenyl-1,3,5-triazine (5.5 g), 3,6-diphenyl-9-(3-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)-9H-carbazole (11.249 g), sodium carbonate (10.888 g), quaternary ammonium salt (0.570 g), toluene (114 ml) and water (114 ml) were added to a 500 ml two necked flask. The resulting solution was sparged with N2 for 30 minutes. After sparging, tetrakis(triphenylphosphine)Pd(0) (1.187 g) was added as a solid to the reaction mixture which was further sparged for 10 minutes. The mixture was then heated to 100 degrees C for 16 hours. After cooling to room temperature the reaction mixture was diluted with dichloromethane and the two layers were separated. The organic layer was dried over MgSO4 and then purified to obtain 9-(3-(4,6-diphenyl-(1,3,5)triazin-2-yl)-phenyl)-3,6-diphenyl-9H-carbazole (9.7 g, yield 75%, purity 99.9%).