Naphthotriazole derivatives and organic electroluminescence devices

Naphthotriazole derivatives represented by the following general formula (1),

• wherein,
• Ar1 is an aromatic hydrocarbon group,
• R1 to R5 may be the same or different, and are hydrogen atoms, deuterium atoms, fluorine atoms, chlorine atoms, cyano groups, alkyl groups having 1 to 6 carbon atoms or aromatic hydrocarbon groups,
• A is a monovalent group represented by the following structural formula (1a),
• wherein,
• m is an integer of 0, 1 or 2,
• Ar2 is a nitrogen-containing aromatic heterocyclic group,
• R6 to R9 may be the same or different, and are hydrogen atoms, deuterium atoms, fluorine atoms, chlorine atoms, cyano groups, alkyl groups having 1 to 6 carbon atoms, aromatic hydrocarbon groups or aromatic heterocyclic groups,
• X is a carbon atom or a nitrogen atom,
• wherein if X is a nitrogen atom, R9 is not present on the ring that includes the nitrogen atoms, if m is 0, Ar2 is directly bonded to the nitrogen atom in the triazole ring and if m is 2, the plurality of R6 to R9 and X may be the same or different from each other,
• wherein the aromatic hydrocarbon group represented by Ar1 may not have a substituent or may have a substituent other than an aromatic heterocyclic group, and
• wherein the aromatic hydrocarbon groups represented by R1 to R5 may not have a substituent or may have a substituent other than an aromatic heterocyclic group.