| abstract |
The invention provides a novel organic electroluminescence compound, its application and an organic electroluminescence device using the same. Its structure is as follows: Wherein, R 1 , R 2 and R 4 are each independently C1-C20 linear or branched alkyl, phenyl, pyridyl, naphthyl, phenanthrenyl, anthracenyl, phenanthrenyl, biphenyl, Pyrimidinyl, triazinyl; R3 is C1-C10 alkyl, or C6-C30 aryl; R5 is hydrogen, deuterium, halogen, C1-C20 straight or branched chain alkyl, or selected from C6 ‑C30 aryl group; R 6 and R 7 are deuterium, C1‑C20 straight or branched chain alkyl, phenyl, pyridyl, naphthyl, phenanthrenyl, anthracenyl, phenanthridinyl, biphenyl Base, pyrimidinyl, triazinyl; X, Y are C or N respectively, I is an integer of 0-4, m, n are 0 or 1. It can be used to prepare organic electroluminescence device, and can reduce the driving voltage of the device, and improve the luminous efficiency, brightness, thermal stability, color purity and lifespan of the device. |