| abstract |
The invention relates to the technical field of organic light-emitting, in particular to a long-life triplet exciton confinement material and its application in an OLED device. The exciton confinement material has a structure represented by formula (I), formula (II), formula (III) or formula (IV): D-A(I); D-π-A(II); A-D -A(III); A-π-D-A(IV); D is selected from pyrenyl, triphenylene, base, anthracenyl, phenanthrenyl or perylene group; A is selected from pyrazino-o-phenanthroline, benzo-o-phenanthroline, o-phenanthroline, acridine, phenazine, dibenzo-γ-pyranone, 1,8-naphthyridinyl or 1,5-naphthyridinyl; π is selected from phenyl, phenyl containing a substituted group or dibenzo six-membered heterocyclic group. The material has a long life, can confine high-energy excitons, and has excellent electron transport performance, and when used as a host material and/or electron transport material of a light-emitting layer in an organic light-emitting device, high device efficiency and stability can be obtained. |