| abstract |
The invention discloses a compound with a quinolinone derivative as the core and its application in an organic electroluminescence device. The compound structure of the invention contains a quinolinone derivative as an electron acceptor, which is beneficial for electrons in the light-emitting layer transmission in . The attached heterocyclic group is an electron donor, which facilitates hole transport in the light-emitting layer. The nitrogen atom inside the heteroatom-containing benzoazepine ketone is a saturated atom, which not only has strong rigidity, but also helps to improve the triplet energy level of the parent nucleus compound. The combination of electron donor and electron acceptor can increase the excitons. The recombination efficiency reduces the startup voltage and improves the device performance. When the compound of the present invention is used as a light-emitting layer material of an organic electroluminescent device, the current efficiency of the device is greatly improved, and meanwhile, the lifespan of the device is significantly improved. |