Organic electroluminescent device using aryl amine derivative containing heterocycle
A compound of formula (7) is provided wherein L 4 is a linking group selected from the group consisting of: provided that an asterisk (*) indicates the position bonding to the nitrogen atom of the carbazolyl group, R 6 to R 13 are independently a hydrogen atom, or a phenyl group, Ar 17 is an unsubstituted phenylphenyl group, and Ar 18 is a phenylphenyl group which may be substituted by a phenyl group or a naphthyl group, or a phenyl group which may be substituted by a naphthyl group.
1. A compound represented by the formula (7)
wherein
L 4 is a linking group selected from the group consisting of:
provided that a single asterisk (*) indicates the position bonding to the nitrogen atom of the carbazolyl group, and a double asterisk (**) indicates the position bonding to the nitrogen atom of N(Ar 17 )(Ar 18 ),
R 6 to R 13 are independently a hydrogen atom, or a phenyl group,
Ar 17 is an unsubstituted phenylphenyl group, and
Ar 18 is a phenylphenyl group which may be substituted by a phenyl group or a naphthyl group, or a phenyl group which may be substituted by a naphthyl group.
2. The compound according to claim 1 , wherein Ar 18 is a 4-phenylphenyl group, which may be substituted by a phenyl group or a naphthyl group.
3. The compound according to claim 1 , wherein Ar 18 is an unsubstituted 4-phenylphenyl group which may be substituted by a phenyl group.
4. The compound according to claim 1 , wherein Ar 18 is an unsubstituted 4-phenylphenyl group.
5. The compound according to claim 1 , wherein L 4 is a linking group of:
provided that a single asterisk (*) indicates the position bonding to the nitrogen atom of the carbazolyl group, and a double asterisk (**) indicates the position bonding to the nitrogen atom of N(Ar 17 )(Ar 18 ).
6. The compound according to claim 1 , wherein R 6 to R 13 are a hydrogen atom.