NITROGEN-CONTAINING AROMATIC HETEROCYCLIC DERIVATIVE AND ORGANIC ELECTROLUMINESCENCE DEVICE USING SAME

摘要

Nitrogen-containing aromatic heterocyclic derivative represented by the formula. X1 to X3 represent a single bond, CRaRb, NRc, an oxygen atom, or a sulfur atom. In the case where all of X1 to X3 have a single bond, at least one of Ara, Arb, and Arc represents an aryl group having 6 to 20 ring carbon atoms substituted with a heteroaryl group, an aryloxy group or a heteroaryloxy group, or a substituted or unsubstituted heteroaryl group having 5 to 20 ring carbon atoms.