Thiadiazole, compound for light-emitting elements, light-emitting element, light-emitting apparatus, authentication apparatus, and electronic device
A thiadiazole contains a basic skeleton represented by any of formulae (1), (2), and (3) in the molecule.
1. A thiadiazole comprising a basic skeleton represented by any of formulae (1), (2), and (3) in a molecule
2. The thiadiazole according to claim 1 , wherein:
the thiadiazole is a compound represented by formula (4) when containing the basic skeleton represented by formula (1) in the molecule;
the thiadiazole is a compound represented by formula (5) when containing the basic skeleton represented by formula (2) in the molecule; and
the thiadiazole is a compound represented by formula (6) when containing the basic skeleton represented by formula (3) in the molecule:
where each A independently represents a hydrogen atom, an alkyl group, or a substituted or unsubstituted aryl group, aryl amino group, or triarylamine, each of R 1 and R 2 independently represents a hydrogen atom, an alkyl group, or a substituted or unsubstituted aryl group, and R 1 and R 2 may be the same or different.
3. The thiadiazole according to claim 2 , wherein:
the compound represented by formula (4) is a compound represented by any of formulae (7), (8), and (9);
the compound represented by formula (5) is a compound represented by any of formulae (10), (11), and (12); and
the compound represented by formula (6) is a compound represented by any of formulae (13), (14), and (15):
where each R independently represents a hydrogen atom, an alkyl group, or a substituted or unsubstituted aryl group, and there may be a ring formed by a carbon linkage between two adjacent R's.
4. A compound for light-emitting elements comprising the thiadiazole according to claim 1 .
5. A light-emitting element comprising:
an anode;
a cathode; and
a layer between the anode and the cathode, the layer containing the thiadiazole according to claim 1 .
6. The light-emitting element according to claim 5 , wherein the layer contains the thiadiazole as a guest material and also contains a host material for the guest material.
7. The light-emitting element according to claim 6 , wherein the host material is a compound represented by formula IRH-1:
where n represents a natural number of 1 to 12, and each R is independently a hydrogen atom, an alkyl group, or a substituted or unsubstituted aryl or aryl amino group.
8. The light-emitting element according to claim 6 , wherein the host material is a compound represented by formula IRH-2:
where each of R 1 to R 4 independently represents a hydrogen atom, an alkyl group, or a substituted or unsubstituted aryl or aryl amino group, with some or all of R 1 to R 4 being the same or all of R 1 to R 4 being different.
9. The light-emitting element according to claim 6 , wherein the host material is a compound represented by formula IRH-3:
where each of R 1 and R 2 independently represents a hydrogen atom, an alkyl group, or a substituted or unsubstituted aryl or aryl amino group, and R 1 and R 2 may be the same or different.
10. The light-emitting element according to claim 6 , wherein the host material is a compound represented by formula IRH-4:
where n represents a natural number of 1 to 10, and each R independently represents a hydrogen atom, an alkyl group, or a substituted or unsubstituted aryl or aryl amino group.
11. The light-emitting element according to claim 6 , wherein the host material is a compound represented by formula IRH-5:
where each of R 1 and R 2 independently represents a hydrogen atom, an alkyl group, or a substituted or unsubstituted aryl or aryl amino group, and R 1 and R 2 may be the same or different.
12. The light-emitting element according to claim 6 , wherein the host material is a compound represented by formula IRH-6:
where each of R 1 and R 2 independently represents a hydrogen atom, an alkyl group, or a substituted or unsubstituted aryl or aryl amino group, and R 1 and R 2 may be the same or different.
13. The light-emitting element according to claim 6 , wherein the host material is a compound represented by formula IRH-7:
where each of R 1 and R 2 independently represents a hydrogen atom, an alkyl group, or a substituted or unsubstituted aryl or aryl amino group, and R 1 and R 2 may be the same or different.
14. The light-emitting element according to claim 6 , wherein the host material is a compound represented by formula IRH-8:
where each of R 1 and R 2 independently represents a hydrogen atom, an alkyl group, or a substituted or unsubstituted aryl or aryl amino group, and R 1 and R 2 may be the same or different.
15. The light-emitting element according to claim 5 , wherein the host material is composed of carbon and hydrogen atoms.
16. The light-emitting element according to claim 5 , wherein:
the thiadiazole is used as a light-emitting material; and
the layer is a light-emitting layer which emits light when electric current flows between the anode and the cathode.
17. A light-emitting apparatus comprising the light-emitting element according to claim 5 .
18. An authentication apparatus comprising the light-emitting element according to claim 5 .
19. An electronic device comprising the light-emitting element according to claim 5 .