DONOR-ACCEPTOR COMPOUNDS WITH NITROGEN-CONTAINING POLYAROMATICS AS ACCEPTOR

摘要

PROBLEM TO BE SOLVED: To provide luminescent materials comprising donor-acceptor compounds with nitrogen-containing polyaromatics as an electron acceptor for use as emitters in organic light emitting diodes.;SOLUTION: A luminescent material has a structure of formula 1, where X₁ to X₁₂ is independently selected from the group consisting of C-R and N, provided that at least one of X₁ to X₁₂ is N and that at least one of X₁ to X₁₂ is C-R, where at least one of the R is a donor group with at least two electron-donating nitrogen atoms and the others of the R are H or the like.;SELECTED DRAWING: Figure 1;COPYRIGHT: (C)2019,JPO&INPIT