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

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

N-(4'-(11H-benzo[a]carbazol-11-yl)-[1,1'-biphenyl]-4-yl)-N-(4-(naphthalen-1-yl)phenyl)-[1,1'-biphenyl]-3-amine

N-(4'-(11,11-dimethylindeno[1,2-b]carbazol-5(11H)-yl)-[1,1'-biphenyl]-4-yl)-N-phenyl-6-(4-phenylpiperazin-1-yl)pyren-1-amine

N-(4'-(10H-phenoxazin-10-yl)-[1,1'-biphenyl]-4-yl)-N-(4'-(adamantan-1-yl)-[1,1'-biphenyl]-4-yl)dibenzo[b,d]furan-4-amine

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

N-([1,1'-biphenyl]-4-yl)-4'-(11H-benzo[a]carbazol-11-yl)-N-(3-(naphthalen-2-yl)phenyl)-[1,1'-biphenyl]-4-amine

N-[4′-(11H-7,15-Dioxa-11-azabenzo[1,10]phenanthro[3,4,5-mnoa]aceanthrylen-11-yl)[1,1′-biphenyl]-4-yl]-N-[1,1′:4′,1′′-terphenyl]-4-yl-9-phenanthrenamine (ACI)

N-(4-(tert-butyl)phenyl)-N-(4'-(7,7-dimethylindeno[1,2-a]carbazol-12(7H)-yl)-[1,1'-biphenyl]-4-yl)dibenzo[b,d]furan-4-amine

N-(4'-(10',11'-dihydro-10H-spiro[acridine-9,5'-dibenzo[a,d][7]annulen]-10-yl)-[1,1'-biphenyl]-4-yl)-N-phenylnaphthalen-1-amine

N-(4'-(9H-carbazol-9-yl)-[1,1'-biphenyl]-4-yl)-N-(3-(benzo[d]thiazol-5-yl)phenyl)-9,9-dimethyl-9H-fluoren-2-amine

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

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

N-(4'-(9H-carbazol-9-yl)-[1,1'-biphenyl]-4-yl)-N-(2',7'-di-tert-butyl-9,9'-spirobi[fluoren]-2-yl)dibenzo[b,d]furan-3-amine

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

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

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

N4-(10-(dimesitylboryl)anthracen-9-yl)-N4,N4',N4'-triphenyl-[1,1'-biphenyl]-4,4'-diamine

N1,N1'-([1,1'-biphenyl]-4,4'-diyl)bis(N1,N4-diphenyl-N4-(m-tolyl)benzene-1,4-diamine)

N4,N4'-bis(3,4-dimethylphenyl)-N4,N4'-diphenyl-[1,1'-biphenyl]-4,4'-diamine