Compound, light-emitting element, light-emitting device, electronic device, and lighting device
Provided is a novel substance that can be used in an element capable of emitting phosphorescence, a novel substance that contributes to high emission efficiency, or a novel substance that contributes to light emission with high color purity. A light-emitting element includes a pair of electrodes and an EL layer between the pair of electrodes. The EL layer includes a substance including a carbazole skeleton. The substance is bonded to a substituted or unsubstituted first arylene group through a nitrogen atom included in the carbazole skeleton. The first arylene group is bonded to a substituted or unsubstituted benzofuropyridyl group or a substituted or unsubstituted benzothienopyridyl group. The first arylene group includes 1 to 5 substituted or unsubstituted second arylene groups which are bonded to one another. The EL layer may further include a layer including an emission center substance, specifically an iridium compound.
1. A light-emitting element comprising:
a pair of electrodes; and
an EL layer between the pair of electrodes,
wherein the EL layer comprises a substance comprising a carbazole skeleton,
wherein the substance has a bond between a substituted or unsubstituted first arylene group and a nitrogen atom comprised in the carbazole skeleton,
wherein the first arylene group is bonded to a substituted or unsubstituted benzofuropyridyl group or a substituted or unsubstituted benzothienopyridyl group, and
wherein the first arylene group comprises 1 to 5 substituted or unsubstituted second arylene groups which are bonded to one another.
2. The light-emitting element according to claim 1 , wherein the EL layer comprises a layer comprising a light-emitting substance.
3. The light-emitting element according to claim 1 , wherein the EL layer comprises a layer comprising an iridium compound.
4. A compound represented by Formula (G1):
wherein A 1 represents a substituted or unsubstituted benzofuropyridyl group or a substituted or unsubstituted benzothienopyridyl group;
wherein Ar represents a substituted or unsubstituted arylene group having 6 to 13 carbon atoms;
wherein each of R 11 to R 18 independently represents hydrogen, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 13 carbon atoms; and
wherein n represents a natural number of 1 to 5.
5. The compound according to claim 4 ,
wherein the compound is represented by Formula (G2-1):
wherein Ar represents a substituted or unsubstituted arylene group having 6 to 13 carbon atoms;
wherein each of R 11 to R 18 independently represents hydrogen, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 13 carbon atoms;
wherein n represents a natural number of 1 to 5;
wherein Y is represented by Formula (G2-2):
wherein one of R 21 to R 27 represents a single bond between Ar and Y in Formula (G2-1);
wherein each of the others of R 21 to R 27 independently represents hydrogen, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 13 carbon atoms; and
wherein Q 1 represents an oxygen atom or a sulfur atom.
6. The compound according to claim 5 , wherein one of R 25 , R 27 and R 21 represents the single bond between Ar and Y.
7. A compound represented by Formula (G3-1):
wherein each of R 11 to R 18 and R 31 to R 34 independently represents hydrogen, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 13 carbon atoms;
wherein n represents a natural number of 1 to 5; and
wherein Y is represented by Formula (G3-2):
wherein one of R 21 to R 27 represents a single bond between a phenylene skeleton and Y in Formula (G3-1);
wherein each of the others of R 21 to R 27 independently represents hydrogen, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 13 carbon atoms; and
wherein Q 1 represents an oxygen atom or a sulfur atom.
8. The compound according to claim 7 , wherein one of R 25 , R 27 and R 21 represents the single bond between the phenylene skeleton and Y.
9. A compound represented by Formula (G4-1):
wherein each of R 11 to R 18 , R 31 to R 34 , and R 41 to R 44 independently represents hydrogen, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 13 carbon atoms; and
wherein Y is represented by Formula (G4-2):
wherein one of R 21 to R 27 represents a single bond between a phenylene skeleton and Y in Formula (G4-1);
wherein each of the others of R 21 to R 27 independently represents hydrogen, a substituted or unsubstituted alkyl group having 1 to 6 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 13 carbon atoms; and
wherein Q 1 represents an oxygen atom or a sulfur atom.
10. The compound according to claim 9 , wherein one of R 25 , R 27 and R 21 represents the single bond between the phenylene skeleton and Y.
11. The compound according to claim 4 ,
wherein the compound is represented by Formula (112):
12. The compound according to claim 4 ,
wherein the compound is represented by Formula (122):
13. The compound according to claim 4 ,
wherein the compound is represented by Formula (134):
14. A light-emitting element comprising:
a pair of electrodes; and
an EL layer between the pair of electrodes,
wherein the EL layer comprises the compound according to claim 4 .
15. The light-emitting element according to claim 14 ,
wherein the EL layer further comprises an iridium complex.
16. A light-emitting device comprising:
the light-emitting element according to claim 14 ; and
a unit configured to control the light-emitting element.
17. A display device comprising:
the light-emitting element according to claim 14 ; and
a unit configured to control the light-emitting element.
18. A lighting device comprising:
the light-emitting element according to claim 14 ; and
a unit configured to control the light-emitting element.
19. An electronic device comprising:
the light-emitting element according to claim 14 ; and
an operation switch.