| abstract |
The invention discloses a thermally activated delayed fluorescence OLED material based on a seven-membered ring diimide acceptor and an application thereof, belonging to the technical field of organic optoelectronic materials. It has the structures shown in formula I and formula II: The invention also discloses the application of the above OLED material. The OLED material of the present invention is a kind of organic small molecular compound which is characterized by seven-membered ring diimide and is formed by connecting power supply groups through aromatic groups, and has suitable molecular energy level, high decomposition temperature and glass transition temperature, and has obvious thermally activated delayed fluorescence (TADF) properties and aggregation-induced fluorescence enhancement (AIE) properties. in the field of luminescence. |