| abstract |
A tetra-o-phenylene triarylamine compound is disclosed, which is a novel triarylamine compound containing a tetra-o-phenylene structure unit. The compounds can be used as charge transport materials, hole transport materials, hole injection materials, electron blocking layers, etc. in electroluminescent devices. These novel compounds have good sublimation properties, which can provide more controllable charge transport properties as well as good OLED device performance. An organic electroluminescent device and compound formulation are also disclosed. |