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

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

N-(4'-(12H-benzofuro[2,3-a]carbazol-12-yl)-[1,1'-biphenyl]-4-yl)-N-([1,1'-biphenyl]-4-yl)-9,9-dimethyl-9H-fluoren-2-amine

N,N-di([1,1'-biphenyl]-4-yl)-4'-(9-(dibenzo[b,d]furan-4-yl)-13c-methyl-9,13c-dihydro-5H-indolo[3',2':4,5]cyclopenta[1,2,3-kl]acridin-5-yl)-[1,1'-biphenyl]-4-amine

N-([1,1'-biphenyl]-4-yl)-N-phenyl-4'-(2-phenyl-8H-oxazolo[5',4':3,4]benzo[1,2-c]carbazol-8-yl)-[1,1'-biphenyl]-4-amine

N-([1,1'-biphenyl]-4-yl)-N-(4'-(1,3,3-trimethyl-14-azafluoreno[3',4',5':3,4,5,6]azuleno[7,8,1-mna]phenanthren-14(3H)-yl)-[1,1'-biphenyl]-4-yl)naphthalen-2-amine

N-([1,1'-biphenyl]-4-yl)-N-(4'-(3-(8-phenyl-8H-fluoreno[4,5-bcd]thiophen-8-yl)-9H-carbazol-9-yl)-[1,1'-biphenyl]-4-yl)-[1,1'-biphenyl]-2-amine

N-([1,1'-biphenyl]-4-yl)-N-(4'-(13c-methyl-9-(phenanthren-9-yl)-9,13c-dihydro-5H-indolo[3',2':4,5]cyclopenta[1,2,3-kl]acridin-5-yl)-[1,1'-biphenyl]-4-yl)phenanthren-9-amine

N-([1,1'-biphenyl]-4-yl)-N-(4'-(9-(4,6-diphenyl-1,3,5-triazin-2-yl)-13c-methyl-9,13c-dihydro-5H-indolo[3',2':4,5]cyclopenta[1,2,3-kl]acridin-5-yl)-[1,1'-biphenyl]-4-yl)naphthalen-1-amine

N-([1,1'-biphenyl]-4-yl)-N-(4'-(9-(dibenzo[b,d]thiophen-4-yl)-13c-methyl-9,13c-dihydro-5H-indolo[3',2':4,5]cyclopenta[1,2,3-kl]acridin-5-yl)-[1,1'-biphenyl]-4-yl)naphthalen-1-amine

N-([1,1'-biphenyl]-4-yl)-N-(4'-(13c-methylspiro[benzo[4,5]pentaleno[1,2,3-kl]acridine-9,9'-xanthene]-5(13cH)-yl)-[1,1'-biphenyl]-4-yl)phenanthren-9-amine

N-([1,1'-biphenyl]-4-yl)-N-(4'-(9-(dibenzo[b,d]furan-2-yl)-13c-methyl-9,13c-dihydro-5H-indolo[3',2':4,5]cyclopenta[1,2,3-kl]acridin-5-yl)-[1,1'-biphenyl]-4-yl)phenanthren-9-amine

N-([1,1'-biphenyl]-4-yl)-N-(4'-(13c-methyl-9-(naphthalen-1-yl)-9,13c-dihydro-5H-indolo[3',2':4,5]cyclopenta[1,2,3-kl]acridin-5-yl)-[1,1'-biphenyl]-4-yl)naphthalen-1-amine