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

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

4,4'-bis(3,6-di-m-tolyl-9H-carbazol-9-yl)-1,1'-biphenyl

N4,N4,N4',N4'-tetraphenyl-[1,1'-biphenyl]-4,4'-diamine

4',4'''-(indolo[3,2-b]carbazole-5,11-diyl)bis(N,N-di-p-tolyl-[1,1'-biphenyl]-4-amine)

4,4'-bis(2-methyl-10,11-dihydro-5H-dibenzo[b,f]azepin-5-yl)-1,1'-biphenyl

N4,N4,N4'-tris(9,9-dimethyl-9H-fluoren-2-yl)-N4'-phenyl-[1,1'-biphenyl]-4,4'-diamine

N4,N4,N4',N4'-tetraphenyl-[1,1'-biphenyl]-4,4'-diamine, hydrogen salt

4,4'-bis(2-methyl-9H-tribenzo[b,d,f]azepin-9-yl)-1,1'-biphenyl

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

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

N-(4'-(1H-benzo[6,7]pleiadeno[1,12,11-bcde]indol-1-yl)-[1,1'-biphenyl]-4-yl)-9,9-dimethyl-N-phenyl-9H-fluoren-2-amine

N1,N1'-([1,1'-biphenyl]-4,4'-diyl)bis(N1,N4,N4-triphenylnaphthalene-1,4-diamine)

5-(4'-(10-mesityldibenzo[b,e][1,4]azaborinin-5(10H)-yl)-[1,1'-biphenyl]-4-yl)-10-phenyl-5,10-dihydrophenazine

2,2'-((([1,1'-biphenyl]-4,4'-diylbis(p-tolylazanediyl))bis(4,1-phenylene))bis(methanylylidene))dimalononitrile

4',4'''-(indolo[3,2-b]carbazole-5,11-diyl)bis(N,N-diphenyl-[1,1'-biphenyl]-4-amine)