Light-emitting element, compound, organic compound, display module, lighting module, light-emitting device, display device, lighting device, and electronic device
A light-emitting element having high emission efficiency is provided. A light-emitting element having a low driving voltage is provided. A novel compound which can be used for a transport layer or as a host material or a light-emitting material of a light-emitting element is provided. A novel compound with a benzofuropyrimidine skeleton is provided. Also provided is a light-emitting element which includes the compound with the benzofuropyrimidine skeleton between a pair of electrodes.
1. A compound represented by formula (G1),
wherein:
A 1 represents a group comprising at least one of a phenyl group, a fluorenyl group, a phenanthryl group, a triphenylenyl group, a dibenzothiophenyl group, a dibenzofuranyl group, a carbazolyl group, a benzimidazolyl group, a benzoxazolyl group, a benzthiazolyl group, and a triphenyl amine skeleton which are substituted or unsubstituted; and
R 1 to R 5 separately represent any one of hydrogen, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted monocyclic saturated hydrocarbon having 5 to 7 carbon atoms, a substituted or unsubstituted polycyclic saturated hydrocarbon having 7 to 10 carbon atoms, and a substituted or unsubstituted aryl group having 6 to 13 carbon atoms.
2. The compound according to claim 1 ,
wherein:
the compound is represented by formula (G2):
α represents a substituted or unsubstituted phenylene group;
n is an integer from 0 to 4; and
Ht uni represents a hole-transport skeleton.
3. The compound according to claim 2 , wherein Ht uni represents any one of a substituted or unsubstituted dibenzothiophenyl group, a substituted or unsubstituted dibenzofuranyl group, and a substituted or unsubstituted carbazolyl group.
4. The compound according to claim 3 ,
wherein:
Ht uni represents any one of groups represented by formulae (Ht-1) to (Ht-6):
R 6 to R 15 separately represent any one of hydrogen, an alkyl group having 1 to 6 carbon atoms, and a substituted or unsubstituted phenyl group; and
R 16 represents any one of an alkyl group having 1 to 6 carbon atoms and a substituted or unsubstituted phenyl group.
5. The compound according to claim 2 , wherein n is 2.
6. The compound according to claim 5 ,
wherein:
the compound is represented by formula (G3):
7. The compound according to claim 1 , wherein the compound is represented by any one of formulae (100), (115), (200), and (300):
8. A light-emitting device comprising:
a first layer and a second layer between a pair of electrodes,
wherein at least one of the first layer and the second layer comprises a compound represented by formula (G1),
wherein:
A 1 represents a group comprising at least one of a phenyl group, a fluorenyl group, a phenanthryl group, a triphenylenyl group, a dibenzothiophenyl group, a dibenzofuranyl group, a carbazolyl group, a benzimidazolyl group, a benzoxazolyl group, a benzthiazolyl group, and a triphenyl amine skeleton which are substituted or unsubstituted; and
R 1 to R 5 separately represent any one of hydrogen, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted monocyclic saturated hydrocarbon having 5 to 7 carbon atoms, a substituted or unsubstituted polycyclic saturated hydrocarbon having 7 to 10 carbon atoms, and a substituted or unsubstituted aryl group having 6 to 13 carbon atoms.
9. The light-emitting device according to claim 8 ,
wherein:
the compound is represented by formula (G2):
α represents a substituted or unsubstituted phenylene group;
n is an integer from 0 to 4; and
Ht uni represents a hole-transport skeleton.
10. The light-emitting device according to claim 9 , wherein Ht uni represents any one of a substituted or unsubstituted dibenzothiophenyl group, a substituted or unsubstituted dibenzofuranyl group, and a substituted or unsubstituted carbazolyl group.
11. The light-emitting device according to claim 10 ,
wherein:
Ht uni represents any one of groups represented by formulae (Ht-1) to (Ht-6):
R 6 to R 15 separately represent any one of hydrogen, an alkyl group having 1 to 6 carbon atoms, and a substituted or unsubstituted phenyl group; and
R 16 represents any one of an alkyl group having 1 to 6 carbon atoms and a substituted or unsubstituted phenyl group.
12. The light-emitting device according to claim 9 , wherein n is 2.
13. The light-emitting device according to claim 12 ,
wherein:
the compound is represented by formula (G3):
14. The light-emitting device according to claim 8 , wherein the compound is represented by any one of formulae (100), (115), (200), and (300):
15. The light-emitting device according to claim 8 ,
wherein the first layer is a light-emitting layer comprising a light-emitting substance and the compound, and
wherein the second layer is an electron-transport layer.
16. An electronic device comprising the light-emitting device according to claim 8 .
17. A lighting device comprising the light-emitting device according to claim 8 .
18. The light-emitting device according to claim 8 ,
wherein the first layer is a light-emitting layer comprising a light-emitting substance, and
wherein the second layer is an electron-transport layer including the compound.
19. The light-emitting device according to claim 8 ,
wherein the first layer is a light-emitting layer comprising a light-emitting substance including the compound, and
wherein the second layer is an electron-transport layer.
20. A light-emitting device comprising:
a first layer, a second layer over the first layer and a third layer over the second layer between a pair of electrodes;
wherein the first layer comprises a compound having hole-transport property,
wherein at least one of the second layer and the third layer comprises a compound represented by formula (G1),
wherein:
A 1 represents a group comprising at least one of a phenyl group, a fluorenyl group, a phenanthryl group, a triphenylenyl group, a dibenzothiophenyl group, a dibenzofuranyl group, a carbazolyl group, a benzimidazolyl group, a benzoxazolyl group, a benzthiazolyl group, and a triphenyl amine skeleton which are substituted or unsubstituted; and
R 1 to R 5 separately represent any one of hydrogen, an alkyl group having 1 to 6 carbon atoms, a substituted or unsubstituted monocyclic saturated hydrocarbon having 5 to 7 carbon atoms, a substituted or unsubstituted polycyclic saturated hydrocarbon having 7 to 10 carbon atoms, and a substituted or unsubstituted aryl group having 6 to 13 carbon atoms.
21. The light-emitting device according to claim 20 ,
wherein the second layer is a light-emitting layer comprising a light-emitting substance, and
wherein the third layer is an electron-transport layer including the compound.
22. The light-emitting device according to claim 20 ,
wherein the second layer is a light-emitting layer comprising a light-emitting substance including the compound, and
wherein the third layer is an electron-transport layer.