N-(4'-(9H-carbazol-9-yl)-[1,1'-biphenyl]-4-yl)-N-(4-(benzo[d]oxazol-2-yl)phenyl)-4'-(9H-carbazol-9-yl)-[1,1'-biphenyl]-4-amine

N-(4-(1-(benzo[c]phenanthren-5-yl)dibenzo[b,d]thiophen-4-yl)phenyl)-4'-(9H-carbazol-9-yl)-N-phenyl-[1,1'-biphenyl]-4-amine

N-(4-(benzofuran-2-yl)phenyl)-4'-(3-(4-(benzofuran-2-yl)phenyl)-9H-carbazol-9-yl)-N-phenyl-[1,1'-biphenyl]-4-amine

N-(4'-((4aZ,17aZ)-17H-dibenzo[2,3:5,6][1,4]diazocino[7,8,1-jk]carbazol-17-yl)-[1,1'-biphenyl]-4-yl)-N-phenylnaphthalen-2-amine

N-([1,1'-biphenyl]-4-yl)-4'-(15H-benzo[a]benzo[5,6][1,4]dithiino[2,3-h]carbazol-15-yl)-N-phenyl-[1,1'-biphenyl]-4-amine

N-([1,1'-biphenyl]-4-yl)-N-(4-(naphthalen-1-yl)phenyl)-4'-(11-phenyl-7H-benzo[c]carbazol-7-yl)-[1,1'-biphenyl]-4-amine

N-(4'-(15,15-dimethylbenzo[5',6'][1,4]dithiino[2',3':4,5]indeno[2,1-a]carbazol-14(15H)-yl)-[1,1'-biphenyl]-4-yl)-N-phenylnaphthalen-1-amine

N-(4'-(11H-benzo[a]carbazol-11-yl)-[1,1'-biphenyl]-4-yl)-N-phenylnaphthalen-1-amine

N-(4'-(11H-benzo[a]carbazol-11-yl)-[1,1'-biphenyl]-4-yl)-N-([1,1'-biphenyl]-4-yl)dibenzo[b,d]thiophen-4-amine

N-(4'-(12,12-dimethylbenzo[f]naphtho[1,8-bc]azepin-7(12H)-yl)-[1,1'-biphenyl]-4-yl)-N-phenylnaphthalen-1-amine

N-(4'-(11H-benzofuro[3,2-b]carbazol-11-yl)-[1,1'-biphenyl]-4-yl)-11,11-dimethyl-N-phenyl-11H-benzo[b]fluoren-2-amine

N-(4'-(11H-benzo[a]carbazol-11-yl)-[1,1'-biphenyl]-4-yl)-N-([1,1'-biphenyl]-4-yl)-9-phenyl-9H-carbazol-2-amine

N-(4'-(11H-benzo[a]naphtho[2,1-c]carbazol-11-yl)-[1,1'-biphenyl]-4-yl)-9,9-dimethyl-N-phenyl-9H-fluoren-2-amine