ORGANIC EL MATERIAL CONTAINING AZACARBAZOLE DERIVATIVE HAVING CARBAZOLYL GROUP, AND ORGANIC EL ELEMENT USING THE SAME

摘要

PROBLEM TO BE SOLVED: To provide an organic EL material which improves luminous efficiency and achieves a longer service life.;SOLUTION: The organic EL material is represented by formula (1). [In the formula (1), X₁ to X₄ are each a nitrogen atom, or a carbon atom singly bonded to R₁; R₁ is a hydrogen atom, a halogen atom, a 6-18C aryl group or heteroaryl group, or a 1-12C alkyl group; R₂ to R₁₀ are each independently a 6-30C aryl group or heteroaryl group; and at least one of X₁ to X₄ is a nitrogen atom.];COPYRIGHT: (C)2014,JPO&INPIT