| abstract |
The present invention discloses a compound of the general formula of the following formula (1): Wherein: m is 1 or 2, n is 4 or 3, and the sum of m and n is 5; X 1 to X 4 are independently selected from CR or N atoms, and said R is selected from H, alkyl, aryl or Heteroaryl; R 1 represents a single substituent to the maximum allowable substituent, and when there are multiple R 1s , adjacent R 1 can be condensed with the adjacent benzene ring to form a ring, and R 1 is independently selected from H , alkyl, aryl or heteroaryl; Ar represents a substituted or unsubstituted cyanophenyl group, a substituted or unsubstituted cyanopyridine group. When used as a light-emitting material in an OLED device, the compound of the present invention exhibits excellent device performance and stability. The present invention also protects the organic electroluminescent device using the compound of the above general formula. |