Patent ID: 8614009

Claim:
An aromatic amine derivative represented by the following formula (1): wherein: R 1 and R 2 each independently represents a substituted or unsubstituted aryl group having 5 to 50 carbon atoms or a substituted or unsubstituted cycloalkyl group having 3 to 50 carbon atoms; A 1 to A 4 each independently represents a hydrogen atom, a substituted or unsubstituted aryl group having 5 to 50 carbon atoms, a substituted or unsubstituted aralkyl group having 1 to 50 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 50 carbon atoms, a substituted or unsubstituted alkoxyl group having 1 to 50 carbon atoms, a substituted or unsubstituted aryloxy group having 5 to 50 carbon atoms, a substituted or unsubstituted heterocyclic group having 5 to 50 carbon atoms, or a halogen atom; and a to d each independently represents an integer of 0 to 5, and, when each one of a to d represents 2 or more, A 1 s, A 2 s, A 3 s, or A 4 s may be identical to or different from each other, and A 1 and A 2 , or A 3 and A 4 may be coupled with each other to form a saturated or unsaturated ring, provided that a derivative wherein a substituent in each group represented by any one of A 1 to A 4 comprising a group containing a vinyl group is excluded, and a derivative wherein each of A 1 to A 4 represents a hydrogen atom is excluded.