Organic electroluminescent compound and application thereof
By designing phosphorescent host compounds containing spirofluorene groups, the thermal stability and service life of organic electroluminescent devices are improved, and the problem of poor thermal stability of existing phosphorescent materials is solved, and efficient luminescence performance is achieved.
Patent Information
- Application Number
- CN202311248628.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2023-09-25
- Publication Date
- 2025-03-25
AI Technical Summary
When existing phosphorescent materials are used in organic electroluminescent devices, the glass transition temperature Tg of the material is low, resulting in poor thermal stability and short service life.
A phosphorescent host compound containing spirofluorenyl groups was designed, and a series of nitrogen-containing groups were connected through benzene, the triplet energy level of the molecule was increased, the glass transition temperature Tg was increased, and the compound was used as the phosphorescent host material in the luminescent layer.
It improves the thermal and chemical stability of organic electroluminescent devices, extends service life, and improves luminescence efficiency and triplet energy level, making it suitable as a high-performance phosphorescent main material.