9-(4'-(5H-benzo[b]carbazol-5-yl)-[1,1'-biphenyl]-4-yl)-9H-dibenzo[b,f]naphtho[1,2-d]azepine

5-(4'-(9H-dibenzo[a,c]carbazol-9-yl)-[1,1'-biphenyl]-4-yl)-5H-benzo[4,5]thieno[3,2-c]carbazole

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

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

N-(4'-(10H-phenoxazin-10-yl)-[1,1'-biphenyl]-4-yl)-9,9-diethyl-N-phenyl-9H-fluoren-2-amine

9-(4'-(11H-benzo[a]carbazol-11-yl)-[1,1'-biphenyl]-4-yl)-9H-carbazole-2,7-dicarbonitrile

9,9-dimethyl-N-phenyl-N-(4'-(4-phenyl-1H-dibenzo[3,4:5,6]azuleno[1,8,7-hij]isoquinolin-1-yl)-[1,1'-biphenyl]-4-yl)-9H-fluoren-2-amine

N-(4'-(10H-phenothiazin-10-yl)-[1,1'-biphenyl]-4-yl)-9,9-dimethyl-N-(naphthalen-1-yl)-9H-fluoren-2-amine

9-(4'-(12,12-dimethylindeno[1,2-c]carbazol-5(12H)-yl)-[1,1'-biphenyl]-4-yl)-14-phenyl-9,14-dihydrodibenzo[a,c]phenazine

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-phenyl-9H-fluoren-3-amine

9,9-dimethyl-N-phenyl-N-(4'-(12-phenylbenzo[b]naphtho[1,8-ef][1,4]diazepin-7(12H)-yl)-[1,1'-biphenyl]-4-yl)-9H-fluoren-3-amine

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-4-amine

9,9'-([1,1'-biphenyl]-4,4'-diyl)bis(N,N-diphenyl-9H-carbazol-2-amine)

4,4'-bis(9H-tribenzo[b,d,f]azepin-9-yl)-1,1'-biphenyl

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

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

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