Aromatic amine derivative and organic electroluminescence device employing the same

An aromatic amine derivative represented by following general formula (1):

• wherein R1 to R7 each independently represent hydrogen atom, a substituted or unsubstituted aryl group having 5 to 50 nuclear atom, a substituted or unsubstituted alkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted alkoxy group having 1 to 50 carbon atoms, a substituted or unsubstituted aralkyl group having 6 to 50 carbon atoms, a substituted or unsubstituted aryloxy group having 5 to 50 nuclear atoms, a substituted or unsubstituted arylthio group having 5 to 50 nuclear atoms, a substituted or unsubstituted alkoxycarbonyl group having 2 to 50 carbon atoms, an amino group substituted with a substituted or unsubstituted aryl group having 5 to 50 nuclear atoms, a halogen atom, cyano group, nitro group, hydroxy group or carboxy group;
• a, b, c, d, e, f and g each independently represent an integer of 0 to 4, and h represents an integer of 1 to 3;
• atoms and groups represented by R1 to R7 may each independently be bonded to an adjacent aromatic ring to form a saturated or unsaturated five-membered or six membered substituted or unsubstituted cyclic structure;
• and
• Ar1 and Ar2 each independently represent a substituted or unsubstituted aryl group having 5 to 50 nuclear atoms.