Heterocyclic compound, and light-emitting element, light-emitting device, lighting device, and electronic appliance using heterocyclic compound

1. A heterocyclic compound represented by a general formula (G1);

wherein:

Ar 1 and Ar 2 independently represent a substituted or unsubstituted aryl group having 6 to 10 carbon atoms in a ring, Ar 1 and an α carbon atom are bonded to each other to form a carbazole skeleton and Ar 2 represents a substituted or unsubstituted aryl group having 6 to 10 carbon atoms in a ring, or Ar 1 and Ar 2 are bonded to each other to form a carbazole skeleton;

Het represents any one of substituents represented by the following general formulae (S1-1) and (S1-2);

Ar 3 to Ar 6 independently represent a substituted or unsubstituted aryl group having 6 to 10 carbon atoms in a ring, and

R 1 represents any one of a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, an an aryl group having 6 to 10 carbon atoms in a ring.

2. The heterocyclic compound according to claim 1 ,

wherein:

the heterocyclic compound is represented by a general formula (G2), and

R 11 to R 20 independently represent any one of a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, and an aryl group having 6 to 10 carbon atoms in a ring.

3. The heterocyclic compound according to claim 2 ,

wherein:

Het represents any one of substituents represented by the following general formulae (S2-1) and (S2-2), and

R 31 to R 50 independently represent any one of a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, and an aryl group having 6 to 10 carbon atoms in a ring.

4. The heterocyclic compound according to claim 2 ,

wherein:

Het represents any one of substituents represented by the following structural formula (S3-1) and general formula (S4-1)

5. The heterocyclic compound according to claim 2 ,

wherein:

the heterocyclic compound is represented by a general formula (G3), and

Het represents any one of substituents represented by the following structural formula (S3-1) and general formula (S4-1)

6. The heterocyclic compound according to claim 2 ,

wherein any two of an α carbon atom, a β carbon atom, and a γ carbon atom are bonded to each other to form a carbazole skeleton.

7. A light-emitting device comprising a light-emitting element, the light-emitting element comprising:

a pair of electrodes; and

a layer including a light-emitting substance and a heterocyclic compound between the pair of electrodes,

wherein:

the heterocyclic compound is represented by a general formula (G1);

Ar 1 and Ar 2 independently represent a substituted or unsubstituted aryl group having 6 to 10 carbon atoms in a ring, Ar 1 and an α carbon atom are bonded to each other to form a carbazole skeleton and Ar 2 represents a substituted or unsubstituted aryl group having 6 to 10 carbon atoms in a ring, or Ar 1 and Ar 2 are bonded to each other to form a carbazole skeleton;

Het represents any one of substituents represented by the following general formulae (S1-1) and (S1-2);

Ar 3 to Ar 6 independently represent a substituted or unsubstituted aryl group having 6 to 10 carbon atoms in a ring, and

R 1 represents any one of a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, and an aryl group having 6 to 10 carbon atoms in a ring.

8. The light-emitting device according to claim 7 , wherein the light-emitting substance is a phosphorescent compound.

9. The light-emitting device according to claim 7 ,

wherein:

the heterocyclic compound is represented by a general formula (G2), and

R 11 to R 20 independently represent any one of a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, and an aryl group having 6 to 10 carbon atoms in a ring.

10. The light-emitting device according to claim 9 ,

wherein:

Het represents any one of substituents represented by the following general formulae (S2-1) and (S2-2), and

R 31 to R 50 independently represent any one of a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, and an aryl group having 6 to 10 carbon atoms in a ring.

11. The light-emitting device according to claim 9 ,

wherein:

Het represents any one of substituents represented by the following structural formula (S3-1) and general formula (S4-1)

12. The light-emitting device according to claim 9 ,

wherein:

the heterocyclic compound is represented by a general formula (G3), and

Het represents any one of substituents represented by the following structural formula (S3-1) and general formula (S4-1)

13. The light-emitting device according to claim 9 ,

wherein any two of an α carbon atom, a β carbon atom, and a γ carbon atom are bonded to each other to form a carbazole skeleton.

14. A lighting device comprising a light-emitting element, the light-emitting element comprising:

a pair of electrodes; and

a layer including a light-emitting substance and a heterocyclic compound between the pair of electrodes,

wherein:

the heterocyclic compound is represented by a general formula (G1);

Ar 1 and Ar 2 independently represent a substituted or unsubstituted aryl group having 6 to 10 carbon atoms in a ring, Ar 1 and an α carbon atom are bonded to each other to form a carbazole skeleton and Ar 2 represents a substituted or unsubstituted aryl group having 6 to 10 carbon atoms in a ring, or Ar 1 and Ar 2 are bonded to each other to form a carbazole skeleton;

Het represents any one of substituents represented by the following general formulae (S1-1) and (S1-2);

Ar 3 to Ar 6 independently represent a substituted or unsubstituted aryl group having 6 to 10 carbon atoms in a ring, and

R 1 represents any one of a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, and an aryl group having 6 to 10 carbon atoms in a ring.

15. The lighting device according to claim 14 ,

wherein the light-emitting substance is a phosphorescent compound.

16. The lighting device according to claim 14 ,

wherein:

the heterocyclic compound is represented by a general formula (G2), and

R 11 to R 20 independently represent any one of a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, and an aryl group having 6 to 10 carbon atoms in a ring.

17. The lighting device according to claim 16 ,

wherein:

Het represents any one of substituents represented by the following general formulae (S2-1) and (S2-2), and

R 31 to R 50 independently represent any one of a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, and an aryl group having 6 to 10 carbon atoms in a ring.

18. The lighting device according to claim 16 ,

wherein:

Het represents any one of substituents represented by the following structural formula (S3-1) and general formula (S4-1)

19. The lighting device according to claim 16 ,

wherein:

the heterocyclic compound is represented by a general formula (G3), and

Het represents any one of substituents represented by the following structural formula (S3-1) and general formula (S4-1)

20. The lighting device according to claim 16 ,

wherein any two of an α carbon atom, a β carbon atom, and a γ carbon atom are bonded to each other to form a carbazole skeleton.

21. An electronic appliance comprising a light-emitting element, the light-emitting element comprising:

a pair of electrodes; and

a layer including a light-emitting substance and a heterocyclic compound between the pair of electrodes,

wherein:

the heterocyclic compound is represented by a general formula (G1);

Ar 1 and Ar 2 independently represent a substituted or unsubstituted aryl group having 6 to 10 carbon atoms in a ring, Ar 1 and an α carbon atom are bonded to each other to form a carbazole skeleton and Ar 2 represents a substituted or unsubstituted aryl group having 6 to 10 carbon atoms in a ring, or Ar 1 and Ar 2 are bonded to each other to form a carbazole skeleton;

Het represents any one of substituents represented by the following general formulae (S1-1) and (S1-2);

Ar 3 to Ar 6 independently represent a substituted or unsubstituted aryl group having 6 to 10 carbon atoms in a ring, and

R 1 represents any one of a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, and an aryl group having 6 to 10 carbon atoms in a ring.

22. The electronic appliance according to claim 21 ,

wherein the light-emitting substance is a phosphorescent compound.

23. The electronic appliance according to claim 21 ,

wherein:

the heterocyclic compound is represented by general formula (G2), and

R 11 to R 20 independently represent any one of a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, and an aryl group having 6 to 10 carbon atoms in a ring.

24. The electronic appliance according to claim 23 ,

wherein:

Het represents any one of substituents represented by the following general formulae (S2-1) and (S2-2), and

R 31 to R 50 independently represent any one of a hydrogen atom, an alkyl group having 1 to 4 carbon atoms, and an aryl group having 6 to 10 carbon atoms in a ring.

25. The electronic appliance according to claim 23 ,

wherein:

Het represents any one of substituents represented by the following structural formula (S3-1) and general formula (S4-1)

26. The electronic appliance according to claim 23 ,

wherein:

the heterocyclic compound is represented by a general formula (G3), and

Het represents any one of substituents represented by the following structural formula (S3-1) and general formula (S4-1)

27. The electronic appliance according to claim 23 ,

wherein any two of an α carbon atom, a β carbon atom, and a γ carbon atom are bonded to each other to form a carbazole skeleton.

28. The heterocyclic compound according to claim 5 ,

wherein any two of an α carbon atom, a β carbon atom, and a γ carbon atom are bonded to each other to form a carbazole skeleton.

29. The light-emitting device according to claim 12 ,

wherein any two of an α carbon atom, a β carbon atom, and a γ carbon atom are bonded to each other to form a carbazole skeleton.

30. The lighting device according to claim 19 ,

wherein any two of an α carbon atom, a β carbon atom, and a γ carbon atom are bonded to each other to faun a carbazole skeleton.

31. The electronic appliance according to claim 26 ,

wherein any two of an α carbon atom, a β carbon atom, and a γ carbon atom are bonded to each other to form a carbazole skeleton.