Aromatic amine derivative, and organic electroluminescent element using same

An organic electroluminescence device, comprising, in the order listed:

• an anode;
• a first hole transporting layer;
• a second hole transporting layer;
• a light emitting layer;
• and
• a cathode;
• wherein at least one of the first hole transporting layer and second hole transporting layer comprises an aromatic amine derivative represented by formula (1):
• wherein in formula (1):
• R1 each independently represents a hydrogen atom, an alkyl group having 1 to 20 carbon atoms, or a phenyl group;
• R2 and R3 each independently represent a hydrogen atom or an alkyl group having 1 to 20 carbon atoms,
• k represents an integer of 1 to 5;
• m represents an integer of 1 to 4;
• n represents an integer of 1 to 3;
• when groups R1 exist, the groups R1 may be the same or different, when groups R2 exist, the groups R2 may be the same or different;
• and when groups R3 exist;
• the groups R3 may be the same or different;
• L represents a single bond or a divalent group represented by formula (16):
• wherein in formula (16):
• R1 represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, or a phenyl group;
• m represents an integer of 1 to 4;
• and
• when groups R1 exist, the groups R1 may be the same or different;
• Ar1 represents a group represented by formula (30):
• wherein in formula (30):
• R1 represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, or a phenyl group;
• m represents an integer of 1 to 4;
• when groups R1 exist, the groups R1 may be the same or different;
• and
• two R4 may be the same or different and each independently represents a methyl group or a phenyl group;
• Ar2 represents a group represented by formula (7):
• wherein in formula (7):
• R1 represents a hydrogen atom, an alkyl group having 1 to 5 carbon atoms, or a phenyl group;
• k represents an integer of 1 to 5;
• m represents an integer of 1 to 4;
• and
• when groups R1 exist, the groups R1 may be the same or different.