TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Components: The organic layer is composed of at least one of 143 compounds (I) e.g. 2-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-pyridine, 2-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-quinoline, 1-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-isoquinoline, 4-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-quinoline, 6-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-quinoline, 2-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-6-phenyl-pyridine, 6-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-(2,2')bipyridinyl, 2-(3-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-phenyl)-pyridine, 2-(3-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-phenyl)-quinoline, 2-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-4,6-diphenyl-pyrimidine, 2-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-4,6-diphenyl-(1,3,5)triazine, 2,2'-(5-(14-(phenanthren-9-yl)benzo(f)tetraphen-9-yl)-1,3-phenylene)dipyridine, 2-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-5-phenyl-thiophene, 2-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-5-phenyl-thieno(3,2-b)thiophene, 2-(3-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-phenyl)-thieno(3,2-b)thiophene, 2-(4-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-phenyl)-thieno(3,2-b)thiophene, 2-(4-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-phenyl)-dithieno(3,2-b;2',3'-d)thiophene, 2-(4-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-phenyl)-6-phenyl-dithieno(3,2-b;2',3'-d)thiophene, 6-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-phenanthridine, 5-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-(1,10)phenanthroline, 3-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-(1,10)phenanthroline, 2-(4-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-phenyl)-4-phenyl-quinazoline, 2-(3-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-phenyl)-4-phenyl-quinazoline, 2-(3-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-phenyl)-4,6-diphenyl-pyrimidine, 2-(4-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-phenyl)-4,6-diphenyl-pyrimidine, 2-(3-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-phenyl)-4,6-diphenyl-(1,3,5)triazine, 2-(4-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-phenyl)-4,6-diphenyl-(1,3,5)triazine, 6-(4-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-phenyl)-phenanthridine, 6-(3-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-phenyl)-phenanthridine, 5-(4-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-phenyl)-(1,10)phenanthroline, 5-(3-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-phenyl)-(1,10)phenanthroline, 9-(4-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-phenyl)-9H-carbazole, 9-(3-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-phenyl)-9H-carbazole, 3-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-9-phenyl-9H-carbazole, 2-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-1-phenyl-1H-benzoimidazole, 2-(4-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-phenyl)-1-phenyl-1H-benzoimidazole, 2-(3-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-phenyl)-1-phenyl-1H-benzoimidazole, 1-(4-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-phenyl)-2-phenyl-1H-benzoimidazole, 1-(3-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-phenyl)-2-phenyl-1H-benzoimidazole, 2-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-benzothiazole, 2-(4-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-phenyl)-benzothiazole, 2-(3-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-phenyl)-benzothiazole, 2-(4-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-phenyl)-benzoxazole, 2-(3-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-phenyl)-benzoxazole, 2-(4-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-phenyl)-3-phenyl-imidazo(1,2-a)pyridine, 2-(3-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-phenyl)-3-phenyl-imidazo(1,2-a)pyridine, 3-(4-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-phenyl)-2-phenyl-imidazo(1,2-a)pyridine, 3-(3-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-phenyl)-2-phenyl-imidazo(1,2-a)pyridine, 3-methyl-2-(4-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-phenyl)-imidazo(1,2-a)pyridine and 3-methyl-2-(3-(9-phenanthren-9-yl-benzo(b)triphenylen-14-yl)-phenyl)-imidazo(1,2-a)pyridine.