N-(4'-(9H-carbazol-9-yl)-[1,1'-biphenyl]-4-yl)-N-(3-(8-phenylnaphthalen-1-yl)phenyl)-[1,1':4',1''-terphenyl]-4-amine

N-(4'-(9H-carbazol-9-yl)-[1,1'-biphenyl]-4-yl)-N-([1,1':3',1''-terphenyl]-3-yl)-9,9'-spirobi[fluoren]-2-amine

N-(4'-(9H-carbazol-9-yl)-[1,1'-biphenyl]-4-yl)-N-([1,1':3',1''-terphenyl]-5'-yl)triphenylen-2-amine

N-(4'-(9H-carbazol-9-yl)-[1,1'-biphenyl]-4-yl)-8-(naphthalen-1-yl)-N-phenyl-8H-naphtho[1,2,3-kl]acridin-3-amine

N-(4'-(9H-carbazol-9-yl)-[1,1'-biphenyl]-4-yl)-8-(naphthalen-1-yl)-N-phenyl-8H-naphtho[1,2,3-kl]acridin-1-amine

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

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

N-(4'-(9-(dibenzo[b,d]furan-1-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)-N-phenyl-[1,1':3',1''-terphenyl]-5'-amine

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)-N-phenyltriphenylen-2-amine

N-(4'-(9-([1,1'-biphenyl]-3-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)-N-([1,1'-biphenyl]-4-yl)phenanthren-9-amine

N-(4'-(9-([1,1'-biphenyl]-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)-N-phenylphenanthren-9-amine

N-(4'-(9H-carbazol-9-yl)-[1,1'-biphenyl]-4-yl)-10,10-dimethyl-N-(4'-(trimethylsilyl)-[1,1'-biphenyl]-4-yl)-10H-spiro[anthracene-9,9'-fluoren]-2'-amine

N-(4'-(9H-carbazol-9-yl)-[1,1'-biphenyl]-4-yl)-N-phenyl-7,8,9,10-tetrahydrospiro[benzo[a]fluorene-11,9'-fluoren]-5-amine

N-(4'-(9H-carbazol-9-yl)-[1,1'-biphenyl]-4-yl)-N-phenyl-7,8,9,10-tetrahydronaphtho[1,2-b]benzofuran-5-amine

N-(4'-(9H-carbazol-9-yl)-[1,1'-biphenyl]-4-yl)-N-phenyl-4,8,12-trithia-3a2-azadibenzo[cd,mn]pyren-6-amine

N-(4'-(9-([1,1'-biphenyl]-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)-N-phenyltriphenylen-2-amine

N-(4'-(5'H-spiro[dibenzo[b,d]silole-5,10'-dibenzo[b,e][1,4]azasilin]-5'-yl)-[1,1'-biphenyl]-4-yl)-N-(dibenzo[b,d]thiophen-3-yl)dibenzo[b,d]thiophen-3-amine

N-(4'-(5'H-spiro[dibenzo[b,d]silole-5,10'-dibenzo[b,e][1,4]azasilin]-5'-yl)-[1,1'-biphenyl]-4-yl)-N-(naphthalen-2-yl)naphthalen-2-amine

N-(4'-(6,6-dimethyl-12-aza-6-silaindeno[2,1,7,6-ghij]pleiaden-12(6H)-yl)-[1,1'-biphenyl]-4-yl)-N-(2,2'-dimethyl-[1,1'-biphenyl]-4-yl)-2,2'-dimethyl-[1,1'-biphenyl]-4-amine

N-(4'-(8,9-dihydro-4H-benzo[def]carbazol-4-yl)-[1,1'-biphenyl]-4-yl)-N-(naphthalen-2-yl)dibenzo[b,d]furan-3-amine