6-(9-(4'-(9H-carbazol-9-yl)-[1,1'-biphenyl]-4-yl)-9H-carbazol-3-yl)thieno[2,3-b]pyrazine

N-((9-(4'-(9H-carbazol-9-yl)-[1,1'-biphenyl]-4-yl)-9H-carbazol-3-yl)methyl)propan-1-amine

9-(4'-(9H-carbazol-9-yl)-[1,1'-biphenyl]-4-yl)-9'-phenyl-9H,9'H-2,3'-bicarbazole

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

5,5'-(9-(4'-(9H-carbazol-9-yl)-[1,1'-biphenyl]-4-yl)-9H-carbazole-3,6-diyl)bis(2-(naphthalen-1-yl)benzo[d]oxazole)

9-(4'-(7H-dibenzo[b,kl]acridin-7-yl)-[1,1'-biphenyl]-4-yl)-9H-benzo[b]naphtho[3,2,1-kl]acridine

9-(4'-(9H-carbazol-9-yl)-[1,1'-biphenyl]-4-yl)-3,6-bis(4-isopropylbenzofuran-2-yl)-9H-carbazole

9-(4'-(9H-carbazol-9-yl)-[1,1'-biphenyl]-4-yl)-3-(tert-butyl)-6-trityl-9H-carbazole

7-(4'-(9H-carbazol-9-yl)-[1,1'-biphenyl]-4-yl)-2-(9H-carbazol-9-yl)-3,6'-bithieno[3,2-b]pyridine

(9-(4'-(9H-carbazol-9-yl)-[1,1'-biphenyl]-4-yl)-9H-carbazol-3-yl)diphenylphosphine oxide

9-(4'-(9H-carbazol-9-yl)-[1,1'-biphenyl]-4-yl)-3,6-di-tert-butyl-9H-carbazole

9-(4'-(9H-carbazol-9-yl)-[1,1'-biphenyl]-4-yl)-2-(4-vinylphenyl)-9H-carbazole

9-(4'-(9H-carbazol-9-yl)-[1,1'-biphenyl]-4-yl)-2-(4'-chloro-[1,1'-biphenyl]-4-yl)-9H-carbazole

9-(4'-(9H-carbazol-9-yl)-[1,1'-biphenyl]-4-yl)-2-chloro-9H-carbazole

9-(4'-(7H-benzo[c]carbazol-7-yl)-[1,1'-biphenyl]-4-yl)-9H-fluoreno[9,1-bc]carbazole

N-(4'-(10H-phenoxazin-10-yl)-[1,1'-biphenyl]-4-yl)-N-(4'-(adamantan-1-yl)-[1,1'-biphenyl]-4-yl)-9,9-dimethyl-9H-fluoren-1-amine

2,2'-(9-(4'-(9H-carbazol-9-yl)-[1,1'-biphenyl]-4-yl)-9H-carbazole-3,6-diyl)diacetonitrile

9,9'-([1,1'-biphenyl]-4,4'-diyl)bis(9H-carbazole-3,6-dicarboxylic acid)

3-(9-(4'-(9H-carbazol-9-yl)-[1,1'-biphenyl]-4-yl)-9H-carbazol-3-yl)propanoic acid

2-(9-(4'-(9H-carbazol-9-yl)-[1,1'-biphenyl]-4-yl)-9H-carbazol-3-yl)ethanol