N4,N4'-bis(4-(6-((3-ethyloxetan-3-yl)methoxy)hexyl)phenyl)-N4,N4'-bis(3,4,5-trifluorophenyl)-[1,1'-biphenyl]-4,4'-diamine

N-(4'-(1H-azepino[2,3,4,5-def:6,7,1-j'k']dicarbazol-1-yl)-[1,1'-biphenyl]-4-yl)-9,9-dimethyl-N-phenyl-9H-fluoren-2-amine

N-(4'-(13c-methyl-9-(naphthalen-2-yl)-9,13c-dihydro-5H-indolo[3',2':4,5]cyclopenta[1,2,3-kl]acridin-5-yl)-[1,1'-biphenyl]-4-yl)-N-phenyl-[1,1':3',1''-terphenyl]-5'-amine

N4,N4'-di(naphthalen-1-yl)-N4,N4'-bis(8-phenylnaphthalen-1-yl)-[1,1'-biphenyl]-4,4'-diamine

N4,N4'-bis(4-(3-(dimethoxy(methyl)silyl)propyl)phenyl)-N4,N4'-diphenyl-[1,1'-biphenyl]-4,4'-diamine

N4,N4'-([1,1'-biphenyl]-4,4'-diyl)bis(N4-phenyl-N4'-(m-tolyl)-[1,1'-biphenyl]-4,4'-diamine)

N4,N4'-bis(4-(methylthio)phenyl)-N4,N4'-bis(4-(quinolin-7-yl)phenyl)-[1,1'-biphenyl]-4,4'-diamine

N4,N4'-bis(4-(dibenzo[b,d]furan-2-yl)phenyl)-N4,N4'-di-o-tolyl-[1,1'-biphenyl]-4,4'-diamine

N-(4'-(4H-4,8b-diazaindeno[1,2,3-gh]pleiaden-4-yl)-[1,1'-biphenyl]-4-yl)-N-([1,1'-biphenyl]-4-yl)-9-(dibenzo[b,d]thiophen-2-yl)-9H-carbazol-3-amine

N-(4'-(4H-4,8b-diazaindeno[1,2,3-gh]pleiaden-4-yl)-[1,1'-biphenyl]-4-yl)-N-([1,1'-biphenyl]-4-yl)-9-(dibenzo[b,d]furan-1-yl)-9H-carbazol-2-amine

N-(4'-(4H-4,8b-diazaindeno[1,2,3-gh]pleiaden-4-yl)-[1,1'-biphenyl]-4-yl)-N-([1,1'-biphenyl]-2-yl)-9,9'-spirobi[fluoren]-3-amine