Triarylamine compound, light-emitting element, light-emitting device, electronic device, and lighting device
A novel triarylamine compound having a bipolar property is provided. The triarylamine compound can be used for a hole-injection layer, a hole-transport layer, a light-emitting layer, or an electron-transport layer in a light-emitting element. The triarylamine compound can also be used as a host material with a light-emitting material which emits relatively short-wavelength light, in a structure where the host material and the guest material constitute a light-emitting layer. The triarylamine compound of the present invention is a fluorescent compound and therefore can also be used as a light-emitting substance of a light-emitting layer. A light-emitting element having high emission efficiency is provided. A light-emitting device, an electronic device, or a lighting device having low power consumption is provided.
1. A compound represented by a general formula (G1),
wherein:
E 1 represents an oxygen atom;
α 1 to α 3 each independently represent a substituted or unsubstituted phenylene group or a substituted or unsubstituted biphenylene group, and m and n are each independently 0 or 1;
Ar 1 represents an aryl group represented by a general formula (G1-2) below;
Ar 2 represents any of a substituted or unsubstituted phenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted phenanthryl group, a substituted or unsubstituted triphenylenyl group, a substituted or unsubstituted fluorenyl group, a substituted or unsubstituted carbazolyl group, a substituted or unsubstituted dibenzothiophenyl group, and a substituted or unsubstituted dibenzofuranyl group; and
R 1 to R 4 each independently represent any of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, and a substituted or unsubstituted phenyl group, and
wherein:
E 2 represents an oxygen atom;
α 4 to α 6 each independently represent a substituted or unsubstituted phenyl group or a substituted or unsubstituted biphenyl group, and q is 0 or 1;
Ar 3 represents any of a substituted or unsubstituted phenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted phenanthryl group, a substituted or unsubstituted triphenylenyl group, a substituted or unsubstituted fluorenyl group, a substituted or unsubstituted carbazolyl group, a substituted or unsubstituted dibenzothiophenyl group, and a substituted or unsubstituted dibenzofuranyl group; and
R 5 to R 8 each independently represent any of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, and a substituted or unsubstituted phenyl group.
2. A light-emitting element comprising the compound according to claim 1 .
3. A light-emitting device comprising the light-emitting element according to claim 2 .
4. An electronic device comprising the light-emitting device according to claim 3 .
5. A lighting device comprising the light-emitting device according to claim 3 .
6. A compound represented by a formula (G2),
wherein:
E 1 represents an oxygen atom;
α 1 represents a substituted or unsubstituted phenylene group or a substituted or unsubstituted biphenylene group, and m and n are each independently 0 or 1;
Ar 1 represents an aryl group represented by a general formula (G2-2) below;
Ar 2 represents any of a substituted or unsubstituted phenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted phenanthryl group, a substituted or unsubstituted triphenylenyl group, a substituted or unsubstituted fluorenyl group, a substituted or unsubstituted carbazolyl group, a substituted or unsubstituted dibenzothiophenyl group, and a substituted or unsubstituted dibenzofuranyl group; and
R 1 to R 4 each independently represent any of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, and a substituted or unsubstituted phenyl group, and
wherein:
E 2 represents an oxygen atom;
α 4 represents a substituted or unsubstituted phenylene group or a substituted or unsubstituted biphenylene group, and q is 0 or 1;
Ar 3 represents any of a substituted or unsubstituted phenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted phenanthryl group, a substituted or unsubstituted triphenylenyl group, a substituted or unsubstituted fluorenyl group, a substituted or unsubstituted carbazolyl group, a substituted or unsubstituted dibenzothiophenyl group, and a substituted or unsubstituted dibenzofuranyl group; and
R 5 to R 8 each independently represent any of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, and a substituted or unsubstituted phenyl group.
7. A light-emitting element comprising the compound according to claim 6 .
8. A light-emitting device comprising the light-emitting element according to claim 7 .
9. An electronic device comprising the light-emitting device according to claim 8 .
10. A lighting device comprising the light-emitting device according to claim 8 .
11. A compound represented by a formula (G3),
wherein:
E 1 represents an oxygen atom;
m and n are each independently 0 or 1;
Ar 1 represents an aryl group represented by a formula (G3-2) below;
Ar 2 represents any of a substituted or unsubstituted phenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted phenanthryl group, a substituted or unsubstituted triphenylenyl group, a substituted or unsubstituted fluorenyl group, a substituted or unsubstituted carbazolyl group, a substituted or unsubstituted dibenzothiophenyl group, and a substituted or unsubstituted dibenzofuranyl group; and
R 1 to R 4 each independently represent any of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, and a substituted or unsubstituted phenyl group, and
wherein:
E 2 represents an oxygen atom;
q is 0 or 1;
Ar 3 represents any of a substituted or unsubstituted phenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted phenanthryl group, a substituted or unsubstituted triphenylenyl group, a substituted or unsubstituted fluorenyl group, a substituted or unsubstituted carbazolyl group, a substituted or unsubstituted dibenzothiophenyl group, and a substituted or unsubstituted dibenzofuranyl group; and
R 5 to R 8 each independently represent any of a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, and a substituted or unsubstituted phenyl group.
12. A light-emitting element comprising the compound according to claim 11 .
13. A light-emitting device comprising the light-emitting element according to claim 12 .
14. An electronic device comprising the light-emitting device according to claim 13 .
15. A lighting device comprising the light-emitting device according to claim 13 .
16. A compound represented by a formula (100):
17. A light-emitting element comprising the compound according to claim 16 .
18. A light-emitting device comprising the light-emitting element according to claim 17 .
19. An electronic device comprising the light-emitting device according to claim 18 .
20. A lighting device comprising the light-emitting device according to claim 18 .
21. A compound represented by a formula (135):
22. A light-emitting element comprising the compound according to claim 21 .
23. A light-emitting device comprising the light-emitting element according to claim 22 .
24. An electronic device comprising the light-emitting device according to claim 23 .
25. A lighting device comprising the light-emitting device according to claim 23 .