Dibenzo[c,g]carbazole compound, light-emitting element, light-emitting device, display device, lighting device and electronic device
Provided is a novel compound which can be used for a transport layer or as a host material or a light-emitting material in a light-emitting element and with which a high-performance light-emitting element can be manufactured. A dibenzo[c,g]carbazole compound in which an aryl group having 14 to 30 carbon atoms and including at least anthracene is bonded to nitrogen of a dibenzo[c,g]carbazole derivative is synthesized. By use of the dibenzo[c,g]carbazole compound, a light-emitting element having very good characteristics can be obtained.
1. A compound comprising:
a dibenzo[c,g]carbazole skeleton; and
an aryl group bonded to a 7-position of the dibenzo[c,g]carbazole skeleton,
wherein the aryl group has 14 to 30 carbon atoms and includes at least an anthracene skeleton, and wherein the anthracene skeleton is bonded to the 7-position of the dibenzo[c,g]carbazole skeleton through a phenylene group.
2. The compound according to claim 1 , wherein the 7-position of the dibenzo[c,g]carbazole skeleton and a 9-position of the anthracene skeleton are bonded through the phenylene group.
3. The compound according to claim 1 , wherein the aryl group is a substituted or unsubstituted anthryl phenyl group, and wherein the substituted or unsubstituted anthryl phenyl group has 20 to 30 carbon atoms.
4. The compound according to claim 1 , wherein the aryl group is a substituted or unsubstituted (9-anthryl)phenyl group, and wherein the substituted or unsubstituted (9-anthryl)phenyl group has 20 to 30 carbon atoms.
5. A light-emitting element comprising a dibenzo[c,g]carbazole compound comprising:
a dibenzo[c,g]carbazole skeleton; and an aryl group bonded to a 7-position of the dibenzo[c,g]carbazole skeleton,
wherein the aryl group has 14 to 30 carbon atoms and includes at least an anthracene skeleton, and
wherein the anthracene skeleton is bonded to the 7-position of the dibenzo[c,g]carbazole skeleton through a phenylene group.
6. The light-emitting element according to claim 5 , wherein the 7-position of the dibenzo[c,g]carbazole skeleton and a 9-position of the anthracene skeleton are bonded through the phenylene group.
7. The light-emitting element according to claim 5 , wherein the aryl group is a substituted or unsubstituted anthryl phenyl group, and wherein the substituted or unsubstituted anthryl phenyl group has 20 to 30 carbon atoms.
8. The light-emitting element according to claim 5 , wherein the aryl group is a substituted or unsubstituted (9-anthryl)phenyl group, and wherein the substituted or unsubstituted (9-anthryl)phenyl group has 20 to 30 carbon atoms.
9. A lighting device comprising the light-emitting element according to claim 5 .
10. A display device comprising the light-emitting element according to claim 5 .
11. A compound represented by a general formula (G2),
wherein α represents a substituted or unsubstituted phenylene group,
wherein β represents a substituted or unsubstituted anthryl group, and
wherein R 11 to R 22 each independently represent any of hydrogen, an alkyl group having 1 to 4 carbon atoms, and an aryl group having 6 to 12 carbon atoms.
12. The compound according to claim 11 , wherein the compound is represented by a general formula (G3),
wherein R 5 represents any of hydrogen, an alkyl group having 1 to 4 carbon atoms, and an aryl group having 6 to 10 carbon atoms,
wherein R 1 , R 2 , R 3 , R 4 , R 6 , R 7 , R 8 , and R 9 each independently represent hydrogen or an alkyl group having 1 to 4 carbon atoms, and
wherein α represents a substituted or unsubstituted phenylene group.
13. The compound according to claim 11 ,
wherein a total number of carbon atoms of α and β is 20 to 30.
14. The compound according to claim 11 , wherein the compound is represented by a general formula (G5),
wherein R 5 represents any of hydrogen, an alkyl group having 1 to 4 carbon atoms, and an aryl group having 6 to 10 carbon atoms,
wherein R 1 , R 2 , R 3 , R 4 , R 6 , R 7 , R 8 , and R 9 each independently represent hydrogen or an alkyl group having 1 to 4 carbon atoms,
wherein α represents a substituted or unsubstituted phenylene group, and
wherein a total number of carbon atoms of R 1 to R 9 and α is greater than or equal to 6 and less than or equal to 16.
15. The compound according to claim 11 , wherein the compound is represented by a general formula (G6),
wherein α represents a substituted or unsubstituted phenylene group,
wherein R 5 represents any of hydrogen, an alkyl group having 1 to 4 carbon atoms, and an aryl group having 6 to 10 carbon atoms, and
wherein a total number of carbon atoms of R 5 and α is greater than or equal to 6 and less than or equal to 16.
16. The compound according to claim 11 , wherein the compound is represented by a general formula (G7),
wherein α represents a substituted or unsubstituted phenylene group,
wherein R 5 represents any of hydrogen, an alkyl group having 1 to 4 carbon atoms, and an aryl group having 6 to 10 carbon atoms, and
wherein a total number of carbon atoms of R 5 and α is greater than or equal to 6 and less than or equal to 16.
17. The compound according to claim 11 , wherein the compound is represented by a structural formula (100),
18. The compound according to claim 11 , the compound is represented by a structural formula (127),
19. A light-emitting element comprising:
a first electrode;
a light-emitting layer over the first electrode; and
a second electrode over the light-emitting layer,
wherein the light-emitting layer comprises the compound according to claim 11 .
20. A lighting device comprising the light-emitting element according to claim 19 .
21. A display device comprising the light-emitting element according to claim 19 .