1,4-Bis-dihexylsilanyl-2,5-bis-[4-(2-dihexylsilanyl-phenylethynyl)-phenylethynyl]-benzene

1,4-dibromo-2,5-bis[(4-(N,N-dibutylamino)phenyl)ethynyl]benzene

2',5'-bis(4-(N,N-dibutylamino)phenyl)ethynyl-2,2'',5,5''-tetramethyl[1,1':4',1'']terphenyl

2,5-bis(dihexylsilyl)-1,4-diethynylbenzene

4,4''-dinonyl-2',5'-bis(phenylethynyl)-1,1':4',1''-terphenyl