NEW NITROGEN-CONTAINING CONDENSED HETEROCYCLIC COMPOUND, CHARGE TRANSPORT MATERIAL, ORGANIC ELECTROLUMINESCENT ELEMENT MATERIAL AND ORGANIC ELECTROLUMINESCENT ELEMENT

摘要

PROBLEM TO BE SOLVED: To provide a new nitrogen-containing condensed heterocyclic compound having high amorphousness and high electron mobility and exhibiting excellent performances as a charge transport material and an organic electroluminescent element material, the charge transport material, an organic electroluminescent element material and an organic electroluminescent element using the new nitrogen-containing condensed heterocyclic compound. SOLUTION: The new nitrogen-containing condensed heterocyclic compound has a partial structure represented by general formula (I) or general formula (II) (wherein, ring a and ring b denote each an aromatic hydrocarbon ring or an aromatic heterocyclic ring which may have a substituent; ring c denotes a hydrocarbon ring or a heterocyclic ring which may have a substituent; and R1to R4denote each a hydrogen atom or an optional substituent). The organic electroluminescent element comprises the nitrogen-containing condensed heterocyclic compound preferably in an electron transport layer. COPYRIGHT: (C)2005,JPO&NCIPI