| abstract |
The invention belongs to the technical field of organic photoelectric materials, and relates to a class of polyaromatic ring compounds used as electroluminescent materials and their applications. The polyaromatic ring compounds have a molecular structure as shown in formula (1): The polyaromatic ring compound provided by the present invention connects small conjugated aromatic rings into polyaromatic ring compounds through elements or groups such as boron, phosphorus and oxygen, and uses non-carbon bridging groups to connect small conjugated ring systems, which can reduce the number of polycyclic compounds. The strong conjugative interaction between HOMO and LUMO inhibits the degree of delocalization of HOMO-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 The large HOMO‑LUMO energy difference produces high-quality blue, sky blue and dark blue light. |