N4-(3-(ethyl(3-methylbenzyl)amino)phenyl)-N4'-(pyren-1-yl)-N4,N4'-di-m-tolyl-[1,1'-biphenyl]-4,4'-diamine

N4-(3-(dibenzo[b,d]furan-4-yl)phenyl)-N4'-(dibenzo[b,d]thiophen-4-yl)-N4,N4'-diphenyl-[1,1'-biphenyl]-4,4'-diamine

N4-(3-(dibenzo[b,d]furan-3-yl)phenyl)-N4,N4'-diphenyl-N4'-(5,5,8,8-tetramethyl-5,6,7,8-tetrahydronaphthalen-2-yl)-[1,1'-biphenyl]-4,4'-diamine

N4,N4,N4'-triphenyl-N4'-(3-(((4-vinylbenzyl)oxy)methyl)phenyl)-[1,1'-biphenyl]-4,4'-diamine

N4-(3,5-di-tert-butylphenyl)-N4'-(9,9-dimethyl-9H-fluoren-2-yl)-N4,N4'-diphenyl-[1,1'-biphenyl]-4,4'-diamine

N4-(3-(4H-benzo[def]carbazol-4-yl)phenyl)-N4',N4'-di([1,1'-biphenyl]-4-yl)-N4-(9,9-dimethyl-9H-fluoren-2-yl)-[1,1'-biphenyl]-4,4'-diamine

N4-(3-(7bH-indeno[1,2,3-jk]fluoren-7b-yl)phenyl)-N4,N4',N4'-triphenyl-[1,1'-biphenyl]-4,4'-diamine

N4,N4-diphenyl-N4',N4'-bis(4-(5-phenyl-1,3,4-thiadiazol-2-yl)phenyl)-[1,1'-biphenyl]-4,4'-diamine

N4,N4'-diphenyl-N4,N4'-bis(4-(2-phenylimidazo[1,2-a]pyridin-3-yl)phenyl)-[1,1'-biphenyl]-4,4'-diamine

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

N4-(dibenzo[b,d]thiophen-4-yl)-N4-(4-(dibenzo[b,d]thiophen-4-yl)phenyl)-N4',N4'-diphenyl-[1,1'-biphenyl]-4,4'-diamine

N4,N4'-bis(4-mesitylnaphthalen-2-yl)-N4,N4'-diphenyl-[1,1'-biphenyl]-4,4'-diamine

N4,N4'-diphenyl-N4,N4'-bis(4-(pyridin-2-yl)phenyl)-[1,1'-biphenyl]-4,4'-diamine

N4,N4-diphenyl-N4',N4'-bis(4-(2-phenyloxazol-5-yl)phenyl)-[1,1'-biphenyl]-4,4'-diamine

N4,N4'-diphenyl-N4,N4'-bis(3-(3-phenyl-1H-indol-1-yl)naphthalen-1-yl)-[1,1'-biphenyl]-4,4'-diamine

N4,N4'-diphenyl-N4,N4'-bis(4-(1-phenylindolizin-2-yl)phenyl)-[1,1'-biphenyl]-4,4'-diamine

N4,N4'-bis(3-(1,1,1,3,5,5,5-heptamethyltrisiloxan-3-yl)phenyl)-N4,N4'-diphenyl-[1,1'-biphenyl]-4,4'-diamine

N4,N4'-diphenyl-N4,N4'-bis(3-(pyridin-4-yl)naphthalen-1-yl)-[1,1'-biphenyl]-4,4'-diamine

N4,N4'-diphenyl-N4,N4'-bis(4-(5-phenyl-1,2,4-oxadiazol-3-yl)phenyl)-[1,1'-biphenyl]-4,4'-diamine

N4,N4'-diphenyl-N4,N4'-bis(4-(1-phenyl-1H-imidazol-4-yl)phenyl)-[1,1'-biphenyl]-4,4'-diamine