N4-(4-(tert-butyl)phenyl)-N4-(9,9-dimethyl-9H-fluoren-1-yl)-N4'-phenyl-N4'-(triphenyleno[2,3-b]benzofuran-14-yl)-[1,1'-biphenyl]-4,4'-diamine

N4-(4,4-dimethyl-4H-cyclopenta[def]phenanthren-2-yl)-N4,N4'-diphenyl-N4'-(7b-phenyl-7bH-indeno[1,2,3-jk]fluoren-6-yl)-[1,1'-biphenyl]-4,4'-diamine

N4-([1,1'-biphenyl]-4-yl)-N4-(4-(benzo[b]thiophen-6-yl)phenyl)-N4'-(naphthalen-1-yl)-N4'-phenyl-[1,1'-biphenyl]-4,4'-diamine

N4-([1,1':3',1''-terphenyl]-5'-yl)-N4'-(4'-bromo-[1,1'-biphenyl]-4-yl)-N4'-(9,9-dimethyl-7-vinyl-9H-fluoren-2-yl)-N4-(naphthalen-1-yl)-[1,1'-biphenyl]-4,4'-diamine

N4-(4-methoxyphenyl)-N4'-(4'-((4-methoxyphenyl)(p-tolyl)amino)-[1,1'-biphenyl]-4-yl)-N4'-(pyren-4-yl)-N4-(p-tolyl)-[1,1'-biphenyl]-4,4'-diamine

N4-(4-(dimesitylboryl)phenyl)-N4,N4',N4'-tris(4-methoxyphenyl)-[1,1'-biphenyl]-4,4'-diamine

N4-(4-(1,6-dihydropyreno[4,5-d]oxazol-10-yl)phenyl)-N4'-(4-(naphtho[2,3-d]oxazol-2-yl)phenyl)-N4,N4'-diphenyl-[1,1'-biphenyl]-4,4'-diamine

N4-(4-(naphthalen-1-yl)phenyl)-N4,N4'-diphenyl-N4'-(6-phenylnaphthalen-2-yl)-[1,1'-biphenyl]-4,4'-diamine

N4-(4-(4-((4'-(diphenylamino)-[1,1'-biphenyl]-4-yl)(ethyl)amino)phenoxy)phenyl)-N4,N4',N4'-triphenyl-[1,1'-biphenyl]-4,4'-diamine

N4-(4-(naphthalen-2-yl)phenyl)-N4',N4'-diphenyl-N4-(4-(quinolin-6-yl)phenyl)-[1,1'-biphenyl]-4,4'-diamine

N4-(2,3-dihydro-1H-inden-5-yl)-N4'-(naphtho[2,1-b]benzofuran-10-yl)-N4,N4'-di(phenanthren-9-yl)-[1,1'-biphenyl]-4,4'-diamine

N4-(9,9-dimethyl-9H-fluoren-2-yl)-N4-(4-methyl-4H-benzo[def]carbazol-2-yl)-N4',N4'-di(naphthalen-1-yl)-[1,1'-biphenyl]-4,4'-diamine

N4-(3-(tert-butyl)phenyl)-N4-(9,9-dimethyl-9H-fluoren-2-yl)-N4'-phenyl-N4'-(triphenyleno[2,3-b]benzofuran-11-yl)-[1,1'-biphenyl]-4,4'-diamine

N4-(2-(9H-carbazol-9-yl)-[1,1'-biphenyl]-4-yl)-N4-([1,1'-biphenyl]-4-yl)-N4'-([1,1':2',1''-terphenyl]-4'-yl)-N4'-phenyl-[1,1'-biphenyl]-4,4'-diamine

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

N-(4'-(9H-carbazol-9-yl)-[1,1'-biphenyl]-4-yl)-N-(4-(quinazolin-8-yl)phenyl)dibenzo[b,d]furan-3-amine

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

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

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

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