(E)-N4-(4-(2-(3-methylthieno[3,4-b]thiophen-6-yl)vinyl)phenyl)-N4'-phenyl-N4,N4'-di-p-tolyl-[1,1'-biphenyl]-4,4'-diamine

N4-(4-methoxyphenyl)-N4,N4'-diphenyl-N4'-(m-tolyl)-[1,1'-biphenyl]-4,4'-diamine

N4-(4-(adamantan-1-yl)naphthalen-1-yl)-N4'-(4-(adamantan-1-yl)phenyl)-N4'-(4'-fluoro-[1,1'-biphenyl]-4-yl)-N4-phenyl-[1,1'-biphenyl]-4,4'-diamine

N1-(4'-(7H-dibenzo[c,g]carbazol-7-yl)-[1,1'-biphenyl]-4-yl)-N1-(naphthalen-1-yl)-N4,N4-diphenylbenzene-1,4-diamine

N4-(6,6-dimethyl-6H-benzo[b]indeno[1,2-d]thiophen-8-yl)-N4,N4',N4'-triphenyl-[1,1'-biphenyl]-4,4'-diamine

N4-(6,6-dimethyl-6H-indeno[2,1-b]benzofuran-8-yl)-N4'-(naphthalen-2-yl)-N4,N4'-diphenyl-[1,1'-biphenyl]-4,4'-diamine

N1-(4'-(12,12-dimethylindeno[1,2-c]carbazol-5(12H)-yl)-[1,1'-biphenyl]-4-yl)-N1,N4,N4-triphenylbenzene-1,4-diamine

N4-(4-(oxazolo[5,4-c]pyridin-2-yl)phenyl)-N4,N4'-diphenyl-N4'-(4-(thiazolo[5,4-c]pyridin-2-yl)phenyl)-[1,1'-biphenyl]-4,4'-diamine

N1-(4'-(7H-dibenzo[a,g]carbazol-7-yl)-[1,1'-biphenyl]-4-yl)-N1-(naphthalen-1-yl)-N4,N4-diphenylbenzene-1,4-diamine

N1-(4'-(12H-benzo[5,6][1,4]dioxino[2,3-a]carbazol-12-yl)-[1,1'-biphenyl]-4-yl)-N1-(9,9-dimethyl-9H-fluoren-2-yl)-N4,N4-diphenylbenzene-1,4-diamine

N4-(4-nitrophenyl)-N4,N4',N4'-triphenyl-[1,1'-biphenyl]-4,4'-diamine

N4-(4-((E)-2-phenyl-2-(m-tolyl)vinyl)phenyl)-N4'-(4-((Z)-2-phenyl-2-(m-tolyl)vinyl)phenyl)-N4,N4'-di-p-tolyl-[1,1'-biphenyl]-4,4'-diamine

N4,N4'-bis(4-pentylphenyl)-N4,N4'-diphenyl-[1,1'-biphenyl]-4,4'-diamine

N4-(7,7-dimethyl-7H-benzo[c]fluoren-10-yl)-N4,N4'-diphenyl-N4'-(9-phenyl-9H-carbazol-3-yl)-[1,1'-biphenyl]-4,4'-diamine

N4-phenyl-N4,N4'-bis(5,5,8,8-tetramethyl-5,8-dihydronaphthalen-1-yl)-N4'-(triphenylen-2-yl)-[1,1'-biphenyl]-4,4'-diamine

N4,N4'-bis(4-(oxazolo[4,5-c]pyridin-2-yl)phenyl)-N4,N4'-diphenyl-[1,1'-biphenyl]-4,4'-diamine

N4-(7,7-dimethyl-5-phenyl-7H-benzo[c]fluoren-9-yl)-N4,N4'-diphenyl-N4'-(9-phenyl-9H-carbazol-3-yl)-[1,1'-biphenyl]-4,4'-diamine

N4,N4-bis(4-nitrophenyl)-N4',N4'-diphenyl-[1,1'-biphenyl]-4,4'-diamine

N4,N4'-bis(4-methoxyphenyl)-N4-(m-tolyl)-N4'-(4-vinylphenyl)-[1,1'-biphenyl]-4,4'-diamine

N4-(4-iodophenyl)-N4,N4'-di(naphthalen-1-yl)-N4'-phenyl-[1,1'-biphenyl]-4,4'-diamine