| 초록 |
Chrysene was selected as an emission core to develop and study new materials. Six compounds introducing various side groups were designed and synthesized: 6,12-bis(30,50-diphenylphenyl)chrysene (TP-C-TP), 6-(30,50-diphenylphenyl)-12-(3,5-diphenylbiphenyl-400-yl)chrysene (TP-C-TPB) and 6,12-bis(300,500-diphenylbiphenyl- 40-yl)chrysene (TPB-C-TPB), which contained bulky aromatic side groups; and N,N,N0,N0-tetraphenyl-chrysene-6,12-diamine (DPA-C-DPA), [12-(4-diphenylamino-phenyl)-chrysen-6-yl]-diphenylamine(DPA-C-TPA) and 6,12-bis[4-(diphenylamino)phenyl]chrysene (TPA-C-TPA). The synthesized materials showed maximum absorption wavelengths at 342–402 nm in the film state and exhibited deep-blue photoluminescence (PL) emissions at 417–464 nm. The use of TP-C-TPB in a non-doped organic lightemitting diode (OLED) device resulted in ultra-deep-blue emission with an external quantum efficiency (EQE) of 4.02%. |
