| abstract |
The invention discloses a light-emitting compound, a light-emitting layer material, an organic electroluminescent device and an electronic device, and relates to the technical field of organic light-emitting materials. The general structural formula of the light-emitting compound is shown in structural formula (1). The light-emitting compound is a benzidine derivative, and the introduction of ring-forming modification on the benzidine structure with steric hindrance is beneficial to suppress the vibration of the donor structure, and then combined with the rigid acceptor to form a rigid D-A skeleton, which is easy to achieve narrow The emission spectrum characteristics; in addition, the corresponding modification on the benzidine structure can further regulate the energy level band gap and emission color of the above compounds, and realize the commercial color standard. At the same time, the large steric hindrance between the donor and the acceptor unit can greatly avoid the accumulation of light-emitting molecules, inhibit the quenching of excitons caused by the accumulation, and help improve the luminous efficiency of the compound in organic electroluminescent devices. Meet the optoelectronic performance requirements of commercial organic electroluminescent devices. |