| abstract |
The invention discloses a compound based on imidazocyclopentaisoquinoline as an acceptor, and belongs to the technical field of organic electroluminescent materials. The general structural formula is shown in formula (I): in formula (I), L 1 and L 2 are each independently a single bond, a C6-C20 arylene group or a C6-C20 heteroarylene group; Ar 1 , Ar 2 Each is independently a hydrogen atom, a phenyl group, an electron-donating group or an electron-withdrawing group; the compound provided by the present invention with the imidazocyclopentaisoquinoline ligand as the core is modified by introducing a new compound composed of a specific group for use in Organic electroluminescent devices can achieve high brightness, low voltage, high efficiency and long service life, and can be widely used in OLED light-emitting devices and display devices as light-emitting layer host materials, thermally active delayed fluorescence (TADF) light-emitting materials or electron transport. material usage. The general structural formula is shown in formula (I): |