Organic electroluminescent device
View Patent ↗An organic electroluminescent device having a pair of electrodes and at least one organic layer including a light-emitting layer interposed between the pair of electrodes, in which the organic layer contains at least one compound represented by formula (I): wherein Z 1 and Z 2 each independently represent a nitrogen-containing heterocycle coordinated with the platinum through a nitrogen atom; Q 1 and Q 2 each independently represent a group bonded with the platinum through a carbon atom, an oxygen atom, a sulfur atom, a nitrogen atom or a phosphorous atom; Q 1 and Q 2 each represent a structure different from each other; L 1 and L 2 each independently represent a single bond or a linking group; and n represents 0 or 1.
1. An organic electroluminescent device having a pair of electrodes and at least one organic layer including a light-emitting layer interposed between the pair of electrodes, wherein the organic layer contains at least one compound represented by formula (VIII):
wherein R 21 , R 22 , R 23 , R 24 , R 25 , R 26 , R 31 , and R 32 each independently represent a hydrogen atom or a substituent; X G11 represents an oxygen atom or a sulfur atom; X G12 represents an oxygen atom or a sulfur atom; and Q 1 represents a group bonded with the platinum through a carbon atom, an oxygen atom, a sulfur atom, a nitrogen atom or a phosphorous atom.
2. An organic electroluminescent device having a pair of electrodes and at least one organic layer including a light-emitting layer interposed between the pair of electrodes, wherein the organic layer contains at least one compound represented by formula (II):
wherein Q 1 represents an aromatic hydrocarbon group bonded with the platinum through a carbon atom or an aromatic heterocyclic group bonded with the platinum through a carbon atom; Q 2 represents an aromatic heterocyclic group bonded with the platinum through a carbon atom, an aryloxy group, or a carbonyloxy group; Q 1 and Q 2 each represent a structure different from each other; R 21 , R 22 , R 23 , R 24 , R 25 and R 26 each independently represent a hydrogen atom or a substituent; L 1 represents a linking group; and n represents 0 (L 2 is not present).
3. The organic electroluminescent device according to claim 2 , wherein Q 2 represents an aryloxy group or a carbonyloxy group.
4. The organic electroluminescent device according to claim 3 , wherein the aromatic heterocyclic group bonded with the platinum through a carbon atom, represented by Q 1 , is pyridine, pyrazine, pyrimidine, pyridazine, triazine, triazole, imidazole, pyrazole, thiophene, or furan.
5. The organic electroluminescent device according to claim 2 , wherein L 1 represents a linking group comprising a carbon atom, a nitrogen atom, an oxygen atom, a sulfur atom, or a silicon atom.
6. The organic electroluminescent device according to claim 2 , wherein the compound represented by formula (II) is a compound represented by formula (III):
wherein Q 1 represents an aromatic hydrocarbon group bonded with the platinum through a carbon atom or an aromatic heterocyclic group bonded with the platinum through a carbon atom; Q 2 represents an aromatic heterocyclic group bonded with the platinum through a carbon atom, an aryloxy group, or a carbonyloxy group; Q 1 and Q 2 each represent a structure different from each other; R 21 , R 22 , R 23 , R 24 , R 25 , R 26 , R 31 and R 32 each independently represent a hydrogen atom or a substituent; and n represents 0 (L 2 is not present).
7. The organic electroluminescent device according to claim 6 , wherein Q 2 represents an aryloxy group or a carbonyloxy group.
8. The organic electroluminescent device according to claim 7 , wherein the aromatic heterocyclic group bonded with the platinum through a carbon atom, represented by Q 1 , is pyridine, pyrazine, pyrimidine, pyridazine, triazine, triazole, imidazole, pyrazole, thiophene, or furan.
9. An organic electroluminescent device having a pair of electrodes and at least one organic layer including a light-emitting layer interposed between the pair of electrodes, wherein the organic layer contains at least one compound represented by formula (IV):
wherein Q 4 represents a group bonded with the platinum through a carbon atom, an oxygen atom, a sulfur atom, a nitrogen atom or a phosphorous atom, but does not represent a substituted or unsubstituted phenyl group; R 21 , R 22 , R 23 , R 24 , R 25 , R 26 , R 31 , R 32 , R 41 , R 42 , R 43 and R 44 each independently represent a hydrogen atom or a substituent; and R 44 may be linked with Q 4 , if possible.
10. The organic electroluminescent device according to claim 2 , wherein at least one of the compound represented by formula (II) is contained in the light-emitting layer.
11. The organic electroluminescent device according to claim 2 , wherein at least one of the compound represented by formula (II) and at least one host material are contained in the light-emitting layer.