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

N-(4-(benzo[d]oxazol-2-yl)phenyl)-4'-(9H-carbazol-9-yl)-N-(4-(dibenzo[b,d]furan-4-yl)phenyl)-[1,1'-biphenyl]-4-amine

N-(4'-(2,9-diphenyl-5H-benzo[5,6][1,4]dioxino[2,3-b]carbazol-5-yl)-[1,1'-biphenyl]-4-yl)-N-phenylnaphthalen-2-amine

N-([1,1'-biphenyl]-4-yl)-4'-(15H-benzo[a]benzo[5,6][1,4]dioxino[2,3-h]carbazol-15-yl)-N-phenyl-[1,1'-biphenyl]-4-amine

N-(4'-(15H-benzo[5,6]naphtho[1',2',3':3,4]azuleno[1,8,7-cde]quinolin-15-yl)-[1,1'-biphenyl]-4-yl)-9,9-dimethyl-N-phenyl-9H-fluoren-2-amine

N-(4'-(14,14-dimethylbenzo[5,6][1,4]dithiino[2,3-a]indeno[1,2-i]carbazol-15(14H)-yl)-[1,1'-biphenyl]-4-yl)-N-phenylnaphthalen-1-amine

N-(4'-(2,9-diphenyl-12H-benzo[5,6][1,4]dioxino[2,3-a]carbazol-12-yl)-[1,1'-biphenyl]-4-yl)-N-phenylnaphthalen-2-amine

N-(4'-(12,12-dimethylbenzo[f]naphtho[1,8-bc]azepin-7(12H)-yl)-[1,1'-biphenyl]-4-yl)-N-(4-(naphthalen-2-yl)phenyl)naphthalen-2-amine

N-(4'-(11H-benzo[a]carbazol-11-yl)-[1,1'-biphenyl]-4-yl)-N-phenyldibenzo[b,d]furan-4-amine

N-(4'-(12,12-dimethylbenzo[f]naphtho[1,8-bc]azepin-7(12H)-yl)-[1,1'-biphenyl]-4-yl)-N-(4-(naphthalen-2-yl)phenyl)naphthalen-1-amine

N-(4'-(11H-benzo[a]carbazol-11-yl)-[1,1'-biphenyl]-4-yl)-N-phenyldibenzo[b,d]thiophen-3-amine

N-(4'-(11H-benzo[a]carbazol-11-yl)-[1,1'-biphenyl]-4-yl)-N-([1,1'-biphenyl]-4-yl)-9,9-dimethyl-9H-fluoren-2-amine

N4-([1,1'-biphenyl]-4-yl)-N4'-(naphthalen-1-yl)-N4'-phenyl-N4-(5,5,8,8-tetramethyl-5,6,7,8-tetrahydronaphthalen-2-yl)-[1,1'-biphenyl]-4,4'-diamine

N-(4'-(11H-benzo[a]carbazol-11-yl)-[1,1'-biphenyl]-4-yl)-N-([1,1'-biphenyl]-4-yl)-4-phenylnaphthalen-1-amine

N-(4'-(11H-benzo[a]carbazol-11-yl)-[1,1'-biphenyl]-4-yl)-N-([1,1'-biphenyl]-3-yl)-9-phenyl-9H-carbazol-4-amine

N4-([1,1'-biphenyl]-4-yl)-N4'-(naphthalen-1-yl)-N4'-(naphthalen-2-yl)-N4-(spiro[cyclohexane-1,9'-fluoren]-2'-yl)-[1,1'-biphenyl]-4,4'-diamine