Organic compound, light-emitting element, light-emitting device, electronic device, and lighting device
A novel substance with which an increase in life and emission efficiency of a light-emitting element can be achieved is provided. A carbazole compound having a structure represented by General Formula (G1) is provided. Note that a substituent which makes the HOMO level and the LUMO level of a compound in which a bond of the substituent is substituted with hydrogen deep and shallow, respectively is used as each of substituents in General Formula (G1) (R 1 , R 2 , Ar 3 , and α 3 ). Further, a substituent which makes the band gap (Bg) and the T1 level of a compound in which a bond of the substituent is substituted with hydrogen wide and high is used as each of the substituents in General Formula (G1) (R 1 , R 2 , Ar 3 , and α 3 ).
1. A carbazole compound represented by General Formula (G1):
wherein R 1 represents an alkyl group having 1 to 12 carbon atoms, a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted phenanthrylgroup, a substituted or unsubstituted triphenylenyl group, or a substituent represented by General Formula (G1-1);
wherein R 2 represents hydrogen, an alkyl group having 1 to 12 carbon atoms, a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, or a substituent represented by General Formula (G1-2);
wherein α 3 represents either a substituted or unsubstituted phenylene group or a substituted or unsubstituted biphenyldiyl group,
wherein Ar 3 represents a substituted or unsubstituted naphthyl group, a substituted or unsubstituted phenanthryl group, or a substituted or unsubstituted triphenylenyl group,
wherein Ar 1 represents an alkyl group having 1 to 12 carbon atoms, a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted phenanthryl group, or a substituted or unsubstituted triphenylenyl group,
wherein α 1 represents either a substituted or unsubstituted phenylene group or a substituted or unsubstituted biphenyldiyl group,
wherein n represents 0 or 1,
wherein Ar 2 represents an alkyl group having 1 to 12 carbon atoms, a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenylgroup, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted phenanthryl group, or a substituted or unsubstituted triphenylenyl group,
wherein α 2 represents either a substituted or unsubstituted phenylene group or a substituted or unsubstituted biphenyldiyl group,
wherein in the case where R 1 , R 2 , and Ar 3 have substituents, the subtituents are separately an alkyl group having 1 to 12 carbon atoms, an unsubstituted phenyl group, an unsubstituted biphenyl group, an unsubstituted naphthyl group, an unsubstituted phenanthryl group, or an unsubstituted triphenyl group, and
wherein in the case where α 3 has a substituent, the substituent of α 3 is an alkyl group having 1 to 12 carbon atoms.
2. The carbazole compound according to claim 1 , wherein R 1 in General Formula (G1) represents structures represented by Structural Formula (S-1), Structural Formula (S-2), Structural Formula (S-3), Structural Formula (S-4) or Structural Formula (S-5):
3. The carbazole compound according to claim 1 , wherein R 2 in General Formula (G1) represents structures represented by Structural Formula (S-11), Structural Formula (S-12), Structural Formula (S-13), Structural Formula (S-14), Structural Formula (S-15) or Structural Formula (S-16):
4. The carbazole compound according to claim 1 , wherein α 3 in General Formula (G1), α 1 in General Formula (G1-1), and α 2 in General Formula (G1-2) are separately structures represented by Structural Formula (α-1), Structural Formula (α-2), Structural Formula (α-3), Structural Formula (α-4), Structural Formula (α-5), Structural Formula (α-6)or Structural Formula (α-7):
5. The carbazole compound according to claim 1 , wherein Ar 1 in General Formula (G1-1) and Ar 2 in General Formula (G1-2) are separately structures represented by Structural Formula (Ar-1), Structural Formula (Ar-2), Structural Formula (Ar-3), Structural Formula (Ar-4), Structural Formula (Ar-5) Structural Formula (Ar-6Structural Formula (Ar-7), Structural Formula (Ar-8), Structural Formula (Ar-9) or Structural Formula (Ar-10):
6. The carbazole compound according to claim 1 , wherein Ar 3 in General Formula (G1) represents structures represented by Structural Formula (Ar-11), Structural Formula (Ar-12),Structural Formula (Ar-13), Structural Formula (Ar-14), Structural Formula (Ar-15):
7. A light-emitting element comprising the carbazole compound according to claim 1 .
8. A light-emitting device comprising the light-emitting element according to claim 7 .
9. A lighting device comprising the light-emitting element according to claim 7 .
10. An electronic device comprising the light-emitting element according to claim 7 .
11. A carbazole compound represented by General Formula (G1):
wherein R 1 represents a substituted or unsubstituted phenyl group or a substituted or unsubstituted naphthyl group;
wherein R 2 represents hydrogen or a substituent represented by General Formula (G1-2);
wherein α 3 represents a substituted or unsubstituted phenylene group,
wherein Ar 3 represents a substituted or unsubstituted naphthyl group, a substituted or unsubstituted phenanthryl group, or a substituted or unsubstituted triphenylenyl group,
wherein Ar 2 represents a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted phenanthryl group, or a substituted or unsubstituted triphenylenyl group,
wherein α 2 represents either a substituted or unsubstituted phenylene group or a substituted or unsubstituted biphenyldiyl group,
wherein in the case where R 1 , R 2 , and Ar 3 have substituents, the subtituents are separately an alkyl group having 1 to 12 carbon atoms, an unsubstituted phenyl group, an unsubstituted biphenyl group, an unsubstituted naphthyl group, an unsubstituted phenanthryl group, or an unsubstituted triphenyl group, and
wherein in the case where α 3 has a substituent, the substituent of α 3 is an alkyl group having 1 to 12 carbon atoms.
12. A light-emitting element comprising the carbazole compound according to claim 11 .
13. A light-emitting device comprising the light-emitting element according to claim 12 .
14. A lighting device comprising the light-emitting element according to claim 12 .
15. An electronic device comprising the light-emitting element according to claim 12 .
16. A carbazole compound represented by General Formula (I2):
wherein X represents chlorine, bromine, or iodine.
17. The carbazole compound according to claim 1 , wherein the carbazole compound is represented by Structural Formula (102) or Structural formula (105):
18. The carbazole compound according to claim 1 , wherein the carbazloe compound is represented by Structural Formula (100), Structural Formula (108), Structural Formula (111), or Structural Formula (120):
19. The carbazole compound according to claim 1 , the wherein carbazloe compound is represented by Structural Formula (112):