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 a substituent represented by General Formula (G1-1);
wherein R 2 represents hydrogen or an alkyl group having 1 to 12 carbon atoms,
wherein α 3 represents a substituted or an unsubstituted phenylene group,
wherein Ar 3 represents any one of a substituted or an unsubstituted naphthyl group, a substituted or an unsubstituted phenanthryl group, and a substituted or an unsubstituted triphenylenyl group,
wherein Ar 1 represents any one of an alkyl group having 1 to 12 carbon atoms, a substituted or an unsubstituted phenyl group, a substituted or an unsubstituted biphenyl group, a substituted or an unsubstituted naphthyl group, a substituted or unsubstituted phenanthryl group, and a substituted or an unsubstituted triphenylenyl group,
wherein α 1 represents a substituted or an unsubstituted phenylene group,
wherein n represents 1,
wherein in the case where R 1 and Ar 3 have substituents, the substituents are separately any of 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, and an unsubstituted triphenylenyl 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 α 1 represents the unsubstituted phenylene group,
wherein α 3 represents the unsubstituted phenylene group,
wherein Ar 1 represents the naphthyl group substituted by the unsubstituted naphthyl group, and
wherein R 2 represents hydrogen.
3. The carbazole compound according to claim 2 ,
wherein Ar 3 represents the unsubstituted naphthyl group.
4. The carbazole compound according to claim 2 ,
wherein Ar 3 represents the unsubstituted phenanthryl group.
5. A carbazole compound represented by General Formula (G1):
wherein R 1 represents either a substituted or an unsubstituted phenyl group or a substituted or an unsubstituted naphthyl group,
wherein R 2 represents any one of hydrogen, an alkyl group having 1 to 12 carbon atoms, and a substituent represented by General Formula (G1-2);
wherein α 2 represents an unsubstituted phenylene group,
wherein Ar 2 represents an unsubstituted naphthyl group,
wherein α 3 represents a substituted or an unsubstituted phenylene group,
wherein Ar 3 represents any one of a substituted or an unsubstituted naphthyl group, a substituted or an unsubstituted phenanthryl group, and a substituted or an unsubstituted triphenylenyl group,
wherein in the case where R 1 and Ar 3 have substituents, the substituents are separately any of 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, and an unsubstituted triphenylenyl 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.
6. The carbazole compound according to claim 5 ,
wherein α 3 represents the unsubstituted phenylene group.
7. The carbazole compound according to claim 6 ,
wherein R 1 represents the unsubstituted naphthyl group, and
wherein R 2 represents hydrogen.
8. The carbazole compound according to claim 7 ,
wherein Ar 3 represents the unsubstituted naphthyl group.
9. The carbazole compound according to claim 8 ,
wherein the carbazole compound is represented by Structural Formula (141),
10. The carbazole compound according to claim 7 ,
wherein Ar 3 represents the unsubstituted phenanthryl group.
11. The carbazole compound according to claim 10 ,
wherein the carbazole compound is represented by Structural Formula (142),
12. The carbazole compound according to claim 6 ,
wherein R 1 represents the unsubstituted naphthyl group, and
wherein R 2 represents a substituent represented by the General Formula (G1-2).
13. The carbazole compound according to claim 6 ,
wherein R 1 represents the unsubstituted phenyl group, and
wherein R 2 represents a substituent represented by the General Formula (G1-2).
14. The carbazole compound according to claim 13 ,
wherein the carbazole compound is represented by Structural Formula (113),