C. Jang, J. Jaung
Aug 2, 2012
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Journal
Molecular Crystals and Liquid Crystals
Abstract
2,3-Dicyanopyrazine were designed and synthesized via the Knoevenagel condensation of reaction 2,3-dicyano-5-methylpyrazines with 4-(diphenylamino)benzaldehyde. Their structure was characterized by 1H-NMR and FT-IR and elemental analysis. The electroluminescent (EL) performance of multi-layered organic light-emitting devices (OLEDs) fabricated with compound 3a as the emitting layer achieved a current efficiency of 1.57 cd/A with green region CIE coordinates of (0.37, 0.51) and 3b achieved a current efficiency of 0.238 cd/A with red region CIE coordinates of (0.54, 0.42).