Organic electroluminescent device
View Patent ↗An organic electroluminescent device is provided and includes: a pair of electrodes; and a light emitting layer between the electrodes. The organic electroluminescent device has a layer containing a compound represented by formula (I). L represents a divalent linking group, Q 1 and Q 2 each independently represents an aromatic or aliphatic heterocycle coordinated to Pt through a nitrogen atom, X 1 represents a 6-membered ring containing one or more nitrogen atoms, Q 1 , Q 2 , and X 1 each independently may have a substituent, X 2 represents a sulfur atom, a phosphorus atom, an oxygen atom, or a nitrogen atom, and X 3 represents a carbon atom, a sulfur atom, or a phosphorus atom.
1. An organic electroluminescent device comprising:
a pair of electrodes; and
a light emitting layer between the electrodes,
wherein the organic electroluminescent device has a layer containing a compound represented by formula (III):
wherein L represents a divalent linking group, R 1 , R 2 and R 3 each independently represents a substituent, and m, n, l each independently represents an integer from 0 to 3,
wherein a partial structure of X 2 and X 3 is either represented by any of the following (ii), (iv) or (v):
wherein in (ii) and (v) X 2 represents a sulfur atom, a phosphorus atom, an oxygen atom, or a nitrogen atom and in (iv) X 2 represents a sulfur atom, a phosphorus atom, or a nitrogen atom, wherein R 3 represents a substituent and R 4 represents a substituent, and X 2 and R 3 in (ii) do not form a cyclic structure;
or the partial structure of X 2 and X 3 is represented by (i) or (iii), wherein in (i) X 2 is a phosphorus atom and in (iii) X 2 is selected from the group consisting of a phosphorus atom and a nitrogen atom.
2. The organic electroluminescent device according to claim 1 , wherein the compound represented by formula (III) is a compound represented by formula (IV):
wherein X 2 and X 3 have the same meanings as in formula (III), R 1 , R 2 , and R 3 each independently represents a substituent, m, n, and l each independently represents an integer from 0 to 3 , and R 1 ′ and R 2 ′ each independently represents a hydrogen atom or a substituent.
3. The organic electroluminescent device according to claim 1 , wherein the layer containing the compound represented by formula (III) is the light emitting layer.
4. The organic electroluminescent device according to claim 1 , wherein the light emitting layer contains a host material.
5. The organic electroluminescent device according to claim 4 , wherein the host material is a compound represented by formula (V):
wherein o stands for an integer from 1 to 3.
6. The organic electroluminescent device according to claim 1 , wherein the light emitting layer contains a compound represented by formula (VI):
wherein R 4 , R 6 , R 8 , R 10 , and X 4 to X 15 each independently represents a hydrogen atom, an alkyl group, or an aryl group.
7. The organic electroluminescent device according to claim 1 , wherein the L represents an alkylene group, an arylene group, a heteroarylene group, an imino group, an oxy group, a thio group, a phosphinidene group, or a silylene group.
8. The organic electroluminescent device according to claim 1 , wherein L represents an arylimino group or —CR 1 ′R 2 ′—, wherein R 1 ′ and R 2 ′ each represents an alkyl group, an alkyl halide group, or an aryl group.
9. The organic electroluminescent device according to claim 1 , wherein L represents a phenylimino group, a 3,5-di-tert-butylphenylimino group, or —CR 1 ′R 2 ′—, wherein R 1 ′ and R 2 ′ each represents an alkyl group, an alkyl halide group, or an aryl group.
10. The organic electroluminescent device according to claim 1 , wherein R 1 and the R 2 each independently represents a halogen atom, an alkylamino group, an aryl group, or an alkyl group.
11. The organic electroluminescence device according to claim 1 , wherein R 3 of (R 3 ) 1 represents a halogen atom.
12. A compound represented by formula (III):
wherein L represents a divalent linking group, R 1 , R 2 and R 3 each independently represents a substituent, and m, n, l each independently represents an integer from 0 to 3,
wherein a partial structure of X 2 and X 3 is either represented by any of the following (ii), (iv) or (v):
wherein in (ii) and (v) X 2 represents a sulfur atom, a phosphorus atom, an oxygen atom, or a nitrogen atom and in (iv) X 2 represents a sulfur atom, a phosphorus atom, or a nitrogen atom, R 3 represents a substituent and R 4 represents a substituent, and X 2 and R 3 in (ii) do not form a cyclic structure;
or the partial structure of X 2 and X 3 is represented by (i) or (iii), wherein in (i) X 2 is a phosphorus atom and in (iii) X 2 is selected from the group consisting of a phosphorus atom and a nitrogen atom.
13. The compound according to claim 12 , wherein the compound represented by formula (III) is represented by formula (IV):
wherein a partial structure of X 2 and X 3 is either represented by any of (ii), (iv) or (v), wherein in (ii) and (v) X 2 represents a sulfur atom, a phosphorus atom, an oxygen atom, or a nitrogen atom and in (iv) X 2 represents a sulfur atom, or a phosphorus atom, or a nitrogen atom;
or the partial structure of X 2 and X 3 is represented by (i) or (iii), wherein in (i) X 2 is a phosphorus atom and in (iii) X 2 is selected from the group consisting of a phosphorus atom and a nitrogen atom, R 1 , R 2 , and R 3 each independently represents a substituent, m, n, and l each independently stands for an integer from 0 to 3, and R 1 ′ and R 2 ′ each independently represents a hydrogen atom or a substituent.
14. The compound according to claim 12 , wherein L represents an alkylene group, an arylene group, a heteroarylene group, an imino group, an oxy group, a thio group, a phosphinidene group, or a silylene group.
15. The compound according to claim 12 , wherein L represents an arylimino group or —CR 1 ′R 2 ′—, wherein R 1 ′ and R 2 ′ each represents an alkyl group, an alkyl halide group, or an aryl group.
16. The compound according to claim 12 , wherein L represents a phenylimino group, a 3,5-di-tert-butylphenylimino group, or —CR 1 ′R 2 ′—, wherein R 1 ′ and R 2 ′ each represents an alkyl group, an alkyl halide group, or an aryl group.
17. The compound according to claim 12 , wherein R 1 and R 2 each independently represents a halogen atom, an alkylamino group, an aryl group, or an alkyl group.
18. The compound according to claim 12 , wherein R 3 of (R 3 ) 1 represents a halogen atom.
19. A light emitting material comprising a compound according to claim 12 .
20. A light emitting layer comprising a compound according to claim 12 as a light emitting material.
21. A light emitting apparatus comprising an organic electroluminescent device according to claim 1 .
22. An illumination apparatus comprising an organic electroluminescent device according to claim 1 .
23. The organic electroluminescent device according to claim 1 , wherein at least one layer between the pair of electrodes is manufactured by a coating method.