N4-(phenanthren-9-yl)-N4',N4'-diphenyl-N4-(spiro[fluorene-9,13'-indeno[1,2-l]phenanthren]-4-yl)-[1,1'-biphenyl]-4,4'-diamine

N4,N4'-di([1,1'-biphenyl]-4-yl)-N4-(1H-inden-6-yl)-N4'-(naphtho[2,1-b]benzofuran-10-yl)-[1,1'-biphenyl]-4,4'-diamine

N4,N4-di([1,1'-biphenyl]-4-yl)-N4'-(naphtho[2,1-b]benzofuran-8-yl)-N4'-phenyl-[1,1'-biphenyl]-4,4'-diamine

N4-([1,1'-biphenyl]-4-yl)-N4'-(naphtho[1,2-b]benzofuran-8-yl)-N4,N4'-diphenyl-[1,1'-biphenyl]-4,4'-diamine

N4-([1,1':4',1''-terphenyl]-4-yl)-N4'-(dibenzo[b,d]furan-4-yl)-N4-phenyl-N4'-(9-phenyl-9H-carbazol-3-yl)-[1,1'-biphenyl]-4,4'-diamine

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

N4-(dibenzo[b,d]thiophen-4-yl)-N4-(9,9-dimethyl-9H-fluoren-2-yl)-N4'-(fluoranthen-3-yl)-N4'-phenyl-[1,1'-biphenyl]-4,4'-diamine

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

N4-(phenanthren-9-yl)-N4',N4'-diphenyl-N4-(9-phenyl-9H-dibenzo[a,c]carbazol-11-yl)-[1,1'-biphenyl]-4,4'-diamine

N4-([1,1':3',1''-terphenyl]-5'-yl)-N4'-(anthracen-9-yl)-N4-phenyl-N4'-(9-phenyl-9H-carbazol-3-yl)-[1,1'-biphenyl]-4,4'-diamine

4,4'-bis(2-(benzo[d]oxazol-2-yl)-10H-phenothiazin-10-yl)-1,1'-biphenyl

4,4'-bis(2-(furo[2,3-b]pyridin-2-yl)-9H-carbazol-9-yl)-1,1'-biphenyl

4,4'-bis(2-(benzo[b]thiophen-2-yl)-9H-carbazol-9-yl)-1,1'-biphenyl

4,4'-bis(2-(2-phenylbenzo[b]thiophen-4-yl)-9H-carbazol-9-yl)-1,1'-biphenyl

4,4'-bis(1-(benzofuran-3-yl)-8-(naphthalen-1-yl)-9H-carbazol-9-yl)-1,1'-biphenyl

4,4'-bis(2-(2-(benzofuran-7-yl)phenyl)-9H-carbazol-9-yl)-1,1'-biphenyl

4,4'-bis(1-(furo[3,2-b]pyridin-2-yl)-9H-carbazol-9-yl)-1,1'-biphenyl

4,4'-([1,1'-biphenyl]-4,4'-diylbis((9,9-dimethyl-9H-fluoren-2-yl)azanediyl))diphenol

4',4'''-([1,1'-biphenyl]-4,4'-diylbis(naphthalen-1-ylazanediyl))bis(([1,1'-biphenyl]-4-carboxylic acid))

4,4'-([1,1'-biphenyl]-4,4'-diylbis((4-([1,2,4]triazolo[1,5-a]pyridin-2-yl)phenyl)azanediyl))dibenzonitrile