| abstract |
The invention relates to an organic blue fluorescent material and a preparation method and application thereof. The material uses a δ bond as a bridge to connect two 蒽 molecular illuminating units, regulates the conjugated form of organic molecules, and introduces on the δ bridge chain. The sterically hindered group inhibits the π-π stacking between organic molecules, and an organic blue fluorescent material is prepared, which has good thermal stability and high luminescence quantum efficiency. The specific preparation methods and applications mainly include: using an organic blue fluorescent material by Suzuki coupling reaction using 9-benzoquinone-10 borate and 4,4'-dibromodiphenyldisubstituted methane, and using the material as a light-emitting material. The layer implements a high performance undoped deep blue OLED device. |