| 摘要 |
PROBLEM TO BE SOLVED: To provide novel compounds that can be used for organic light emitting devices.SOLUTION: The invention provides compounds comprising a triphenylene moiety and a benzo- or dibenzo-thiophene, or benzo- or dibenzo-selenophene moiety with fused substituents. In particular, the benzo- or dibenzo-moiety has a fused substituent. These compounds may be used in organic light emitting devices, particularly in combination with yellow, orange and red emitters, to provide devices with improved properties. In the formulas in figure 3, X is S or Se, and L is a phenylene group or a direct connection.SELECTED DRAWING: Figure 3 |
