| abstract |
The invention discloses a pyrrole derivative, an organic electroluminescent material, a light-emitting element and a consumer product. The structural formula of the pyrrole derivative of the present invention is shown in formula (I), which is very suitable for use in the hole transport layer or exciton blocking layer in organic electroluminescence elements, and is especially suitable for use in phosphorescent light-emitting layers. It is because the pyrrole derivatives of the present invention do not annihilate luminescence; when the pyrrole derivatives of the present invention are used as host materials for fluorescent or phosphorescent emitters, they have higher luminous efficiency and longer service life; Derivatives have high luminous efficiency when used in organic electroluminescent elements, and lead to steep current-voltage curves in the case of use and low operating voltage; the pyrrole derivatives have high thermal stability and can be used in Sublimation is carried out without decomposition and without residue; meanwhile, the pyrrole derivatives of the present invention also have high oxidation stability and are easy to handle and store. Formula (I). |