MATERIAL FOR ORGANIC ELECTROLUMINESCENT ELEMENTS, ORGANIC ELECTROLUMINESCENT ELEMENT, DISPLAY DEVICE, AND LIGHTING DEVICE

摘要

Provided is an organic electroluminescent element which has improved driving voltage and improved current efficiency. An organic electroluminescent element having the above-mentioned improved characteristics is provided by using, as a material for organic electroluminescent elements, a polycyclic aromatic compound in which a nitrogen atom and another heteroatom or a metal atom (X) are adjacent to each other in a non-aromatic ring.

主权项

1. A material for organic electroluminescent element, containing a polycyclic aromatic compound having a partial structure represented by the following general formula (I) or a salt thereof:(in the formula (I),
X represents B, P, P═O, P═S, P═Se, As, As═O, As═S, As═Se, Sb, Sb═O, Sb═S, Sb═Se, an optionally substituted metal element in groups 3 to 11 of the periodic table, or an optionally substituted metal element or metalloid element in group 13 or 14 of the periodic table, ring A, ring B, ring C and ring D are each independently an optionally substituted aromatic ring or an optionally substituted heteroaromatic ring, two adjacent rings may form a ring therebetween together with a connecting group or a single bond, and the partial structure represented by the above described formula (I) has at least one hydrogen and at least one hydrogen in the partial structure may be substituted with deuterium.)