9-(4'-(9H-carbazol-9-yl)-[1,1'-biphenyl]-4-yl)-1-(3-(4-(naphthalen-1-yl)-6-phenyl-1,3,5-triazin-2-yl)phenyl)-9H-carbazole

9-(4'-(7H-benzo[c]carbazol-7-yl)-[1,1'-biphenyl]-4-yl)-11,11-dimethyl-9,11-dihydroindeno[2,1-b]naphtho[1,2-g]carbazole

5-(4'-(14-phenyldibenzo[a,c]phenazin-9(14H)-yl)-[1,1'-biphenyl]-4-yl)-5H-benzo[4,5]thieno[3,2-c]carbazole

9-(4'-(9,9-dimethylacridin-10(9H)-yl)-[1,1'-biphenyl]-4-yl)-9H-carbazole-3-carbonitrile

12-(4'-(14-phenyldibenzo[a,c]phenazin-9(14H)-yl)-[1,1'-biphenyl]-4-yl)-12H-benzo[4,5]thieno[2,3-a]carbazole

9-(4'-(11H-benzo[a]carbazol-11-yl)-[1,1'-biphenyl]-4-yl)-11,11-dimethyl-9,11-dihydrodibenzo[a,c]indeno[1,2-h]carbazole

9,9-dimethyl-N2-phenyl-N7-(4'-(phenyl(m-tolyl)amino)-[1,1'-biphenyl]-4-yl)-N7-(4-(phenyl(m-tolyl)amino)phenyl)-N2-(m-tolyl)-9H-fluorene-2,7-diamine

9,9-dimethyl-N-phenyl-N-(4'-(6-phenyl-6,12-diazaindeno[2,1,7,6-ghij]pleiaden-12(6H)-yl)-[1,1'-biphenyl]-4-yl)-9H-fluoren-1-amine

9,9-dimethyl-N-phenyl-N-(4'-(3-phenyl-1H-dibenzo[3,4:5,6]azuleno[1,8,7-hij]isoquinolin-1-yl)-[1,1'-biphenyl]-4-yl)-9H-fluoren-2-amine

4,4'-bis(3,6-dibromo-9H-carbazol-9-yl)-1,1'-biphenyl

N-(4'-(10H-phenothiazin-10-yl)-[1,1'-biphenyl]-4-yl)-N-(4-(adamantan-1-yl)phenyl)-9,9-dimethyl-9H-fluoren-3-amine

N2-(4'-(10H-phenoxazin-10-yl)-[1,1'-biphenyl]-4-yl)-9,9-diethyl-N2,N7,N7-triphenyl-9H-fluorene-2,7-diamine

9,9'-([1,1'-biphenyl]-4,4'-diyl)bis(N,N-diphenyl-9H-carbazol-3-amine)

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

4,4'-bis(3-((prop-2-yn-1-yloxy)methyl)-9H-carbazol-9-yl)-1,1'-biphenyl

4,4'-bis(3,6-dineopentyl-9H-carbazol-9-yl)-1,1'-biphenyl

N-(4'-(4H-naphtho[1',8':5,6,7][1,4]diazepino[3,2,1-jk]carbazol-7-yl)-[1,1'-biphenyl]-4-yl)-9-(dibenzo[b,d]furan-4-yl)-N-phenyl-9H-carbazol-1-amine