| abstract |
The invention belongs to the technical field of organic optoelectronic materials, and relates to a class of polyaromatic compounds used as electroluminescent materials and applications, wherein the polyaromatic compounds have a molecular structure as shown in formula (1): The polyaromatic ring compound provided by the present invention connects the small conjugated aromatic rings into polyaromatic ring compounds through elements or groups such as boron, phosphorus oxygen, etc., and uses non-carbon bridge groups to connect the small conjugated ring system, which can reduce the number of polycyclic aromatic rings. The strong conjugate interaction between HOMO and LUMO inhibits the degree of delocalization of HOMO and LUMO, so that the energy difference of HOMO-LUMO will not become too small, and the T1 energy level will not be too low, so this kind of compound has Larger HOMO‑LUMOs have poorer energy and emit high-quality blue, azure, and deep blue light. |