Organic compound, light-emitting element, light-emitting device, electronic device, and lighting device
A novel organic compound is provided. That is, a novel organic compound that is effective in improving reliability of a light-emitting element is provided. The organic compound includes a condensed ring including a pyrimidine ring and is represented by General Formula (G1). In General Formula (G1), A represents a group having 6 to 100 carbon atoms and includes at least one of an aromatic ring and a heteroaromatic ring. The aromatic ring and the heteroaromatic ring may each include a substituent. Furthermore, Q represents oxygen or sulfur. A ring X represents a substituted or unsubstituted naphthalene ring or a substituted or unsubstituted phenanthrene ring.
1. A light-emitting device comprising:
a pair of electrodes; and
a light-emitting layer between the pair of electrodes,
wherein the light-emitting layer comprises a first organic compound, a second organic compound, and a light-emitting substance,
wherein the first organic compound and the second organic compound form an exciplex,
wherein the first organic compound is represented by General Formula (G2):
wherein α represents a substituted or unsubstituted phenylene group,
wherein n represents an integer of 0 to 4,
wherein Ht uni comprises a pyrrole ring structure, a furan ring structure, or a thiophene ring structure,
wherein Q represents oxygen or sulfur, and
wherein the ring X represents a substituted or unsubstituted naphthalene ring or a substituted or unsubstituted phenanthrene ring.
2. The light-emitting device according to claim 1 , wherein General Formula (G2) is represented by General Formula (G5):
3. The light-emitting device according to claim 1 , wherein Ht uni is represented by any one of General Formulae (Ht-1) to (Ht-7),
wherein R 2 to R 15 each represent 1 to 4 substituents and independently represent any one of hydrogen, an alkyl group having 1 to 6 carbon atoms, and a substituted or unsubstituted phenyl group, and
wherein Ar 1 represents a substituted or unsubstituted aryl group having 6 to 13 carbon atoms.
4. The light-emitting device according to claim 1 ,
wherein the ring X is represented by any one of General Formulae (X-1) to (X-4) and is condensed with an adjacent ring at a position represented by a, and
wherein R 16 to R 23 each represent 1 to 4 substituents and independently represent any one of hydrogen, an alkyl group having 1 to 6 carbon atoms, and a substituted or unsubstituted phenyl group.
5. The light-emitting device according to claim 1 , wherein the first organic compound is represented by Structural Formula (100) or Structural Formula (101):
6. The light-emitting device according to claim 1 , wherein the light-emitting substance is a phosphorescent material.
7. The light-emitting device according to claim 1 , wherein the light-emitting substance is a thermally activated delayed fluorescence material.
8. A light-emitting device comprising:
a pair of electrodes; and
a light-emitting layer between the pair of electrodes,
wherein the light-emitting layer comprises a first organic compound, a second organic compound, and a light-emitting substance,
wherein the first organic compound and the second organic compound form an exciplex,
wherein the first organic compound is represented by General Formula (G3):
wherein α represents a substituted or unsubstituted phenylene group,
wherein n represents an integer of 1 to 4,
wherein Ht uni comprises a pyrrole ring structure, a furan ring structure, or a thiophene ring structure,
wherein R 1 represents 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, or a substituted or unsubstituted aryl group having 6 to 13 carbon atoms,
wherein Q represents oxygen or sulfur, and
wherein a ring X represents a substituted or unsubstituted naphthalene ring or a substituted or unsubstituted phenanthrene ring.
9. The light-emitting device according to claim 8 , wherein General Formula (G3) is represented by General Formula (G4):
10. The light-emitting device according to claim 8 , wherein Ht uni is represented by any one of General Formulae (Ht-1) to (Ht-7),
wherein R 2 to R 15 each represent 1 to 4 substituents and independently represent any one of hydrogen, an alkyl group having 1 to 6 carbon atoms, and a substituted or unsubstituted phenyl group, and
wherein Ar 1 represents a substituted or unsubstituted aryl group having 6 to 13 carbon atoms.
11. The light-emitting device according to claim 8 ,
wherein the ring X is represented by any one of General Formulae (X-1) to (X-4) and is condensed with an adjacent ring at a position represented by a, and
wherein R 16 to R 23 each represent 1 to 4 substituents and independently represent any one of hydrogen, an alkyl group having 1 to 6 carbon atoms, and a substituted or unsubstituted phenyl group.
12. The light-emitting device according to claim 8 , wherein the light-emitting substance is a phosphorescent material.
13. The light-emitting device according to claim 8 , wherein the light-emitting substance is a thermally activated delayed fluorescence material.