4,4'-bis(3-cyclohexyl-9H-carbazol-9-yl)-1,1'-biphenyl

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

4,4'-bis(3-(4-(furo[2,3-c]pyridin-2-yl)naphthalen-1-yl)-6-methyl-9H-carbazol-9-yl)-1,1'-biphenyl

4,4'-bis(3-(6-(benzo[b]thiophen-2-yl)pyridin-3-yl)-9H-carbazol-9-yl)-1,1'-biphenyl

4,4'-bis(3-(2-phenylthieno[2,3-b]pyridin-5-yl)-9H-carbazol-9-yl)-1,1'-biphenyl

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

4,4'-bis(3-(2-methylbenzo[d]oxazol-5-yl)-9H-carbazol-9-yl)-1,1'-biphenyl

4,4'-bis(3-(6-(benzofuran-2-yl)pyridin-3-yl)-9H-carbazol-9-yl)-1,1'-biphenyl

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

4,4'-bis(3-(benzo[b]thiophen-5-yl)-9H-carbazol-9-yl)-1,1'-biphenyl

4,4'-bis(3-(benzo[b]thiophen-3-yl)-9H-carbazol-9-yl)-1,1'-biphenyl

N4,N4'-di([1,1'-biphenyl]-4-yl)-N4-(4,4-dimethyl-4H-cyclopenta[def]phenanthren-8-yl)-N4'-(9-phenyl-9H-carbazol-3-yl)-[1,1'-biphenyl]-4,4'-diamine

N4,N4-di([1,1'-biphenyl]-4-yl)-N4'-(5,12-diethyl-5,12-dihydroindolo[3,2-a]carbazol-3-yl)-N4'-(4-(pyridin-4-yl)phenyl)-[1,1'-biphenyl]-4,4'-diamine

N4,N4-di([1,1'-biphenyl]-4-yl)-N4'-(5,5-dimethyl-5H-indeno[1,2-c]pyridin-7-yl)-N4'-(triphenylen-2-yl)-[1,1'-biphenyl]-4,4'-diamine

4,4'-bis(3-(2-(trifluoromethyl)furo[3,2-c]pyridin-7-yl)-9H-carbazol-9-yl)-1,1'-biphenyl

N4,N4-di([1,1'-biphenyl]-4-yl)-N4'-phenyl-N4'-(4''-vinyl-[1,1':4',1''-terphenyl]-4-yl)-[1,1'-biphenyl]-4,4'-diamine

N4,N4'-di([1,1'-biphenyl]-3-yl)-N4,N4'-bis(6-phenylnaphthalen-2-yl)-[1,1'-biphenyl]-4,4'-diamine

N4,N4-di([1,1'-biphenyl]-4-yl)-N4'-([1,1':4',1''-terphenyl]-4-yl)-N4'-(4-vinylphenyl)-[1,1'-biphenyl]-4,4'-diamine

N4,N4'-di([1,1'-biphenyl]-3-yl)-N4,N4'-bis(4-phenylnaphthalen-2-yl)-[1,1'-biphenyl]-4,4'-diamine

4,4'-bis(2-(naphtho[2,1-d]thiazol-2-yl)-9H-carbazol-9-yl)-1,1'-biphenyl