| abstract |
The invention discloses a compound, a material and an organic electroluminescence device. The compound is the compound represented by the following formula I. The compound represented by the formula I has a special spiro ring structure, which can effectively block intramolecular conjugation and increase its energy range width. At the same time, the spiro ring structure has high molecular rigidity, high glass transition temperature, high Thermal stability, the organic electroluminescence device using the material of the novel structure of the present invention as the hole transport layer has higher element efficiency than the organic electroluminescence device using the hole transport layer material of the prior art. |