9-(4'-(12,12-dimethylindeno[2,1-a]carbazol-11(12H)-yl)-[1,1'-biphenyl]-4-yl)-14-phenyl-9,14-dihydrodibenzo[a,c]phenazine

9-(4'-(1H-indeno[6,7,1-mna]phenanthro[9,10-i]acridin-5(2H)-yl)-[1,1'-biphenyl]-4-yl)-9H-naphtho[3,2,1-kl]phenanthro[9,10-b]acridine

9-(4'-(11H-benzo[a]carbazol-11-yl)-[1,1'-biphenyl]-4-yl)-11,11-dimethyl-9,11-dihydroindeno[2,1-b]naphtho[1,2-g]carbazole

12-(4'-(14-phenyldibenzo[a,c]phenazin-9(14H)-yl)-[1,1'-biphenyl]-4-yl)-12H-benzofuro[2,3-a]carbazole

9-(4'-(9H-carbazol-9-yl)-[1,1'-biphenyl]-4-yl)-1-(4-(4-phenyl-6-(4-phenylnaphthalen-1-yl)-1,3,5-triazin-2-yl)phenyl)-9H-carbazole

9-(4'-(9,9-dimethylacridin-10(9H)-yl)-[1,1'-biphenyl]-4-yl)-9H-carbazole-3,6-dicarbonitrile

9-(4'-(9H-carbazol-9-yl)-[1,1'-biphenyl]-4-yl)-1-(4-(4,6-diphenyl-1,3,5-triazin-2-yl)phenyl)-9H-carbazole

9-(4'-(9H-carbazol-9-yl)-[1,1'-biphenyl]-4-yl)-1,2,3,4,5,6,7,8-octafluoro-9H-carbazole

4-(9-(4'-(9H-carbazol-9-yl)-[1,1'-biphenyl]-4-yl)-9H-carbazol-3-yl)pyridine 1-oxide

N-(4'-(4H-naphtho[1',8':5,6,7][1,4]diazepino[3,2,1-jk]carbazol-7-yl)-[1,1'-biphenyl]-4-yl)-9,9-dimethyl-N-(naphthalen-1-yl)-9H-fluoren-2-amine

N-(4'-(6H-8-oxa-6-azabenzo[6,7]naphtho[2',1',8':3,4,5]azuleno[1,8-bc]fluoren-6-yl)-[1,1'-biphenyl]-4-yl)-9,9-dimethyl-N-phenyl-9H-fluoren-2-amine

(1E,1'E)-9-(4'-(3-((E)-(acetoxyimino)methyl)-9H-carbazol-9-yl)-[1,1'-biphenyl]-4-yl)-9H-carbazole-3-carbaldehyde O-acetyl oxime

4,4'-bis(3-(((4-vinylbenzyl)oxy)methyl)-9H-carbazol-9-yl)-1,1'-biphenyl

4,4'-bis(3,6-di(thiophen-2-yl)-9H-carbazol-9-yl)-1,1'-biphenyl

4,4'-bis(3,6-diethyl-9H-carbazol-9-yl)-1,1'-biphenyl

9,9'-([1,1'-biphenyl]-4,4'-diyl)bis(9H-carbazole-3-carbonitrile)

4,4'-bis(2-(naphthalen-1-yl)-9H-carbazol-9-yl)-1,1'-biphenyl

9,9'-([1,1'-biphenyl]-4,4'-diyl)bis(9H-carbazol-3-amine)

9,9'-([1,1'-biphenyl]-4,4'-diyl)bis(9H-carbazol-4-ol)

4,4'-di(9H-[2,9'-bicarbazol]-9-yl)-1,1'-biphenyl