N4,N4'-di(naphthalen-2-yl)-N4,N4'-bis(7-phenyl-2,3-dihydro-1H-inden-4-yl)-[1,1'-biphenyl]-4,4'-diamine

N4-(naphthalen-1-yl)-N4-phenyl-N4',N4'-bis(7-phenyl-2,3-dihydro-1H-inden-4-yl)-[1,1'-biphenyl]-4,4'-diamine

N4,N4'-bis(2,4-dimethylphenyl)-N4-(4-(2,2-diphenylvinyl)phenyl)-N4'-phenyl-[1,1'-biphenyl]-4,4'-diamine

N4,N4'-bis(2,3-dihydro-1H-inden-4-yl)-N4,N4'-bis(3-(naphthalen-1-yl)phenyl)-[1,1'-biphenyl]-4,4'-diamine

N4,N4'-bis(2,3-dihydro-1H-inden-4-yl)-N4-(naphthalen-1-yl)-N4'-(naphthalen-2-yl)-[1,1'-biphenyl]-4,4'-diamine

N4,N4'-bis(2,4-dimethylphenyl)-N4,N4'-di(phenanthren-9-yl)-[1,1'-biphenyl]-4,4'-diamine

N4,N4'-bis(2,4-dimethylphenyl)-N4,N4'-bis(4-methoxyphenyl)-[1,1'-biphenyl]-4,4'-diamine

N4,N4'-bis(2,4-dimethylphenyl)-N4,N4'-di-p-tolyl-[1,1'-biphenyl]-4,4'-diamine

N4,N4'-bis(2,3-dihydro-1H-inden-4-yl)-N4,N4'-bis(3'-(naphthalen-1-yl)-[1,1'-biphenyl]-3-yl)-[1,1'-biphenyl]-4,4'-diamine

N4,N4'-bis(2,3-dihydrobenzo[b][1,4]dioxin-6-yl)-N4,N4'-bis(4-methoxyphenyl)-[1,1'-biphenyl]-4,4'-diamine

N4,N4-bis(benzo[5,6][1,4]thiazino[2,3,4-kl]phenothiazin-3-yl)-N4',N4'-diphenyl-[1,1'-biphenyl]-4,4'-diamine

N4,N4'-diphenyl-N4,N4'-bis(1,1,3,3-tetramethyl-2,3-dihydro-1H-inden-5-yl)-[1,1'-biphenyl]-4,4'-diamine

N4,N4'-bis(11,11-dimethyl-11H-benzo[a]fluoren-3-yl)-N4,N4'-diphenyl-[1,1'-biphenyl]-4,4'-diamine

N4,N4'-bis(10-methylphenanthren-9-yl)-N4,N4'-diphenyl-[1,1'-biphenyl]-4,4'-diamine

N4,N4'-di([1,2'-binaphthalen]-7-yl)-N4,N4'-diphenyl-[1,1'-biphenyl]-4,4'-diamine

N4,N4-di([1,1':3',1''-terphenyl]-5'-yl)-N4'-(9-methyl-9-phenyl-9H-fluoren-2-yl)-N4'-phenyl-[1,1'-biphenyl]-4,4'-diamine

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

N4,N4'-di([1,2'-binaphthalen]-6'-yl)-N4,N4'-diphenyl-[1,1'-biphenyl]-4,4'-diamine

N4,N4'-(1,2-phenylene)bis(N4,N4',N4'-triphenyl-[1,1'-biphenyl]-4,4'-diamine)

N4-(9,9-diphenyl-9H-fluoren-3-yl)-N4,N4',N4'-triphenyl-[1,1'-biphenyl]-4,4'-diamine