| abstract |
The present invention provides an organic electroluminescent compound, which has the structure represented by the following formula (I) or (II): Wherein, R 1 to R 4 are selected from: H, halogen, cyano, C1-C20 alkane, C1-C20 halogenated alkane, C3-C20 cycloalkyl, C3-C20 halogenated ring Alkyl group, C1-C20 alkoxy group, C1-C20 silyl group, aryloxy group with ring carbon number of 6-30, aromatic hydrocarbon group with ring carbon number of 6-30, and ring carbon number of 6-30 A heterocyclic aromatic hydrocarbon group of 30; Ar 1 and Ar 2 are each independently selected from: an aromatic hydrocarbon group with a ring carbon number of 6-30 and a heterocyclic aromatic hydrocarbon group with a ring carbon number of 6-30. The organic electroluminescent compound of the present invention has excellent electron blocking performance and higher glass transition temperature; the OLED device prepared by using the organic electroluminescent compound of the present invention exhibits lower operating voltage and higher current Efficiency and longer service life; therefore, it has a wide range of application values and excellent market potential. |