N-([1,1'-biphenyl]-4-yl)-4'-(5H-benzo[b]carbazol-5-yl)-N-(4-(tert-butyl)phenyl)-[1,1'-biphenyl]-4-amine

4'-(7,7-dimethylindeno[2,1-b]carbazol-5(7H)-yl)-N-(4-(phenanthren-9-yl)phenyl)-N-phenyl-[1,1'-biphenyl]-4-amine

4'-(7,7-dimethylindeno[2,1-b]carbazol-5(7H)-yl)-N-(4-(naphthalen-1-yl)phenyl)-N-phenyl-[1,1'-biphenyl]-4-amine

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

4'-(16H-11-oxa-16-azadibenzo[g,ij]indeno[1',2':3,4]naphtho[2,1,8-cde]azulen-16-yl)-N,N-diphenyl-[1,1'-biphenyl]-4-amine

4'-(19H-benzo[7',8']carbazolo[3',2':4,5]imidazo[1,2-f]phenanthridin-19-yl)-N,N-diphenyl-[1,1'-biphenyl]-4-amine

4'-(16,16-dimethylindeno[1,2-b]phenanthro[9,10-h]carbazol-10(16H)-yl)-N,N-diphenyl-[1,1'-biphenyl]-4-amine

4'-(14,14-dimethylbenzo[4,5]indeno[1,2-b]carbazol-8(14H)-yl)-N,N-diphenyl-[1,1'-biphenyl]-4-amine

4'-(18H-benzofuro[3,2-a]phenanthro[9,10-h]carbazol-18-yl)-N,N-diphenyl-[1,1'-biphenyl]-4-amine

4'-(14,14-dimethylbenzo[a]indeno[1,2-c]carbazol-5(14H)-yl)-N,N-diphenyl-[1,1'-biphenyl]-4-amine

4'-(3,6-diphenyl-9H-carbazol-9-yl)-N-phenyl-N-(4-(9-phenyl-9H-carbazol-3-yl)phenyl)-[1,1'-biphenyl]-4-amine

4'-(1H-indeno[4,3,2,1-cdef]carbazol-1-yl)-N,N-diphenyl-[1,1'-biphenyl]-4-amine

4,4'-bis(12,12-dimethylindeno[1,2-c]carbazol-5(12H)-yl)-1,1'-biphenyl

4'-(3,6-diphenyl-9H-carbazol-9-yl)-N,N-diphenyl-[1,1'-biphenyl]-4-amine

4,4'-bis(11,11-diphenylindeno[1,2-b]carbazol-5(11H)-yl)-1,1'-biphenyl

4'-(10H-benzo[4,5]thieno[2,3-b]phenanthro[9,10-h]carbazol-10-yl)-N,N-diphenyl-[1,1'-biphenyl]-4-amine

4'-(11,11-dimethylfluoreno[9,1-bc]indeno[1,2-h]carbazol-9(11H)-yl)-N,N-diphenyl-[1,1'-biphenyl]-4-amine

4'-(10-([1,1'-biphenyl]-4-yl)tribenzo[b,e,g][1,4]diazocin-5(10H)-yl)-N,N-di-p-tolyl-[1,1'-biphenyl]-4-amine

4'-(11,11-dimethylindeno[1,2-b]carbazol-5(11H)-yl)-N-(4-(naphthalen-1-yl)phenyl)-N-phenyl-[1,1'-biphenyl]-4-amine

4'-(14H-benzo[h]benzofuro[3,2-a]carbazol-14-yl)-N,N-diphenyl-[1,1'-biphenyl]-4-amine