Blue organic light-emitting devices using novel styrylarylene host and dopant materials

Four styrylamine-based blue dopant materials were synthesized using either the Wittig–Hornor or the Heck reaction. Blue organic light-emitting diodes were successfully prepared and characterized. The organic light-emitting diodes comprised ITO/DNTPD/NPB/TPM-BiP:NBD(5%)/Alq3/Al–LiF in which NPB was used as the hole transport layer, DNTPD as the hole injection layer, 4,4′-bis[1-phenyl-2-(4,4′-biphenyl)vinyl]-p-terphenyl (TPM-BiP) as the blue-emitting host, Alq3 as the electron transport layer and Al as the cathode.