| abstract |
The invention belongs to the technical field of organic photoelectric materials, in particular to a class of nitrogen-containing heterocyclic compounds used as light-emitting materials and their application. The nitrogen-containing heterocyclic ring prepared in the present invention is used as a host luminescent material not only with high luminous efficiency, but also with adjustable wavelengths of emitted light, and its maximum luminous wavelength can be 410-530nm. This type of material has a similar skeleton structure, high HOMO‑LUMO energy, and can transfer energy to the guest luminescent material, thereby realizing the adjustment of the emitted light wavelength from blue light to green light. It is especially suitable for display devices, which can improve Luminous efficiency, lower driving voltage. In addition, the preparation method of the host luminescent material is basically the same, and the operation is simple. |