| abstract |
The invention discloses an organic electroluminescent compound and an organic electroluminescent device, the structural formula of which is shown in the following formula 1: , wherein R1 and R2 are independently hydrogen, phenyl, biphenyl, terphenyl, and naphthyl; the phenyl, biphenyl, terphenyl, and naphthyl are unsubstituted or at least one of them A group in which hydrogen is replaced by deuterium, an alkyl group with 1-4 carbon atoms, a deuterated alkyl group with 1-4 carbon atoms, and a cyano group; R3, R4, R5, R6, R7 are independently hydrogen, Phenyl, biphenyl, naphthyl; the phenyl, biphenyl, and naphthyl are unsubstituted or at least one hydrogen is deuterium, an alkyl group with 1-4 carbon atoms, or an alkyl group with 1-4 carbon atoms Deuterated alkyl group and cyano group substituted with cyano group; applying it in organic electroluminescent devices as organic electroluminescent materials can greatly improve the luminous efficiency of organic electroluminescent devices. Moreover, the starting voltage drops, the power consumption is relatively reduced, and the service life is greatly improved. |