AROMATIC AMINE DERIVATIVE, AND ORGANIC ELECTROLUMINESCENT ELEMENT COMPRISING SAME
申请人:Kato Tomoki
公开号:US20120248426A1
公开(公告)日:2012-10-04
Provided is an aromatic amine derivative represented by the formula N(Ar
A
) (Ar
B
) (Ar
C
) as an organic EL device material capable of reducing the driving voltage of an organic EL device, and improving its luminous efficiency and device lifetime. Ar
A
represents the formula (II-1) or (II-2). L
a
represents an arylene group or the like, Ar
a
represents an aryl group or the like, and n represents 2 or 3. Ar
B
represents the formula (III). L
b
represents a single bond or the like, R
1
and R
2
each represent an alkyl group or the like, o and p each represent 0 to 3 or the like, X represents an oxygen atom or the like, and R
3
, R
4
and R
5
each represent an alkyl group or the like. Ar
C
represents an aryl group, a heteroaryl group, or the formula (II-1), (II-2), or (III).