1-ethyl-9-(4'-(1-(2,2,2-trifluoroethyl)-9H-carbazol-9-yl)-[1,1'-biphenyl]-4-yl)-9H-carbazole

7-(4'-(14-phenyldibenzo[a,c]phenazin-9(14H)-yl)-[1,1'-biphenyl]-4-yl)-7H-benzo[4,5]thieno[2,3-b]carbazole

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

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

3-octyl-9-(4'-(3-(6-(3-(pyridin-2-yl)phenyl)hexyl)-9H-carbazol-9-yl)-[1,1'-biphenyl]-4-yl)-9H-carbazole

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-1-amine

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

9,9-dimethyl-N-(naphthalen-1-yl)-N-(4'-(1-phenylpyrrolo[3,2-b]carbazol-5(1H)-yl)-[1,1'-biphenyl]-4-yl)-9H-fluoren-2-amine

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

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

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

4,4'-bis(9H-dibenzo[a,c]carbazol-9-yl)-1,1'-biphenyl

4,4'-bis(3-(2-(4-vinylphenyl)propan-2-yl)-9H-carbazol-9-yl)-1,1'-biphenyl

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