NITROGEN-CONTAINING HETEROCYCLIC COMPOUND, ORGANIC ELECTROLUMINESCENT ELEMENT MATERIAL, COMPOSITION FOR ORGANIC ELECTROLUMINESCENT ELEMENT, ORGANIC ELECTROLUMINESCENT ELEMENT, ORGANIC EL DISPLAY AND ORGANIC EL LIGHTING

摘要

PROBLEM TO BE SOLVED: To provide an organic electroluminescent element which excels in driving stability and can be driven at a low driving voltage by an organic electroluminescent element material which is soluble in various solvents, has high electron transportability, and does not easily crystallize. SOLUTION: A nitrogen-containing heterocyclic compound is represented by formula (1) (wherein X1to X3are each carbon or nitrogen, provided that any one of X1to X3is nitrogen; R1to R3are each an organic group; L1is an aromatic group; n is an integer of 2-6; m is an integer of 0-4; p, r, and s are each an integer of 0-4; and Ar1is a group selected from aromatic hydrocarbon groups). COPYRIGHT: (C)2011,JPO&INPIT