Organic electroluminescence element material, organic electroluminescence element, display device and lighting apparatus
View Patent ↗Provided is an organic EL element, which has a controlled emission wavelength, a high emission efficiency and a long emission life. An organic EL element material for such organic EL element, a lighting device, and a display device using such organic EL element are also provided.
1. An organic electroluminescence element material represented by Formula (1),
wherein
R 1 represents a hydrogen atom, an aliphatic group, an aromatic hydrocarbon cyclic group, or a heterocyclic group;
L 1 represents a phenylene group or a simple bond;
X represents O or S; and
the compound represented by Formula (1) may have a substituent at another position, the substituent selected from the group consisting of an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an aromatic hydrocarbon ring group, an aromatic heterocyclic group, a heterocyclic group, an alkoxy group, a cycloalkoxy group, an aryloxy group, an alkylthio group, a cycloalkylthio group, an arylthio group, an alkylthio group, a cycloalkylthio group, an arylthio group, an alkoxycarbonyl group, an aryloxycarbonyl group, a sulfamoyl group, an acyl group, an acyloxy group, an amido group, a carbamoyl group, an ureido group, a sulfinyl group, an alkylsulfonyl group, an arylsulfonyl group, an amino group, a halogen atom, a fluorinated hydrocarbon group, a cyano group, and a silyl group.
2. An organic electroluminescence element material of claim 1 , wherein L 1 in Formula (1) represents a simple bond.
3. An organic electroluminescence element material of claim 1 , wherein X in Formula (1) represents O.
4. An organic electroluminescence element incorporating at least a light-emitting layer which is sandwiched between an anode and a cathode, wherein the organic electroluminescence element incorporates the organic electroluminescence element material of claim 1 .
5. An organic electroluminescence element of claim 4 , wherein the light-emitting layer contains a phosphorescent emission dopant.
6. An organic electroluminescence element of claim 5 , wherein the 0-0 band of the above phosphorescent emission dopant is 485 nm or less.
7. An organic electroluminescence element of claim 4 incorporating the organic electroluminescence element material in the light-emitting layer.
8. An organic electroluminescence element of claim 4 , wherein the organic electroluminescence element has a hole block layer as a constituting layer, and the hole block layer incorporates the organic electroluminescence element material.
9. An organic electroluminescence element of claim 4 , wherein the organic electroluminescence element emits white light.
10. A display device, wherein the display device is provided with an organic electroluminescence element of claim 4 .
11. A lighting apparatus, wherein the lighting apparatus is provided with an organic electroluminescence element of claim 4 .
12. A display device, wherein the display device has the lighting apparatus of claim 11 , and a liquid crystal element as a display means.
13. An organic electroluminescence element material represented by Formula (2),
wherein,
L 1 and L 2 represent a linking group or a simple bond; L 3 represents a linking group;
X represents O or S;
X 1 represents O, S, or NRa;
n1 represents an integer of 1 to 5;
Ra represents a hydrogen atom, an aliphatic group, an aromatic hydrocarbon cyclic group, or a heterocyclic group; and
the compound represented by Formula (2) may have a substituent at another position.
14. An organic electroluminescence element material of claim 13 , wherein L 3 of Formula (2) represents a bivalent linking group derived from an aromatic hydrocarbon cyclic group, or a heterocyclic group.
15. An organic electroluminescence element material represented by Formula (3),
wherein,
L 1 , L 2 , and L 4 represent a linking group or a simple bond;
X represents O or S;
X 1 represents O, S, or NRa;
Ra represents a hydrogen atom, an aliphatic group, an aromatic hydrocarbon cyclic group, or a heterocyclic group; and
the compound represented by Formula (3) may have a substituent at another position.
16. An organic electroluminescence element material represented by Formula (4),
wherein
R 1 and R 2 represent a hydrogen atom, an aliphatic group, an aromatic hydrocarbon cyclic group, or a heterocyclic group;
L 1 and L 2 represent a linking group or a simple bond;
L 5 represents a linking group;
X represents O or S;
X 1 represents O, S, or NRa;
n2 represents an integer of 1 to 5;
Ra represents a hydrogen atom, an aliphatic group, an aromatic hydrocarbon cyclic group, or a heterocyclic group; and
the compound represented by Formula (3) may have a substituent at another position.
17. An organic electroluminescence element material of claim 16 , wherein L 5 of Formula (4) represents a bivalent linking group derived from an aromatic hydrocarbon cyclic group, or a heterocyclic group.
18. An organic electroluminescence element material represented by Formula (5),
wherein
R 1 represents a hydrogen atom, an aliphatic group, an aromatic hydrocarbon cyclic group, or a heterocyclic group;
L 1 and L 2 represent a linking group or a simple bond;
L 6 represents a linking group;
X represents O or S;
X 1 represents O, S, or NRa;
n3 represents an integer of 1 to 5;
Ra represents a hydrogen atom, an aliphatic group, an aromatic hydrocarbon cyclic group, or a heterocyclic group; and
the compound represented by Formula (3) may have a substituent at another position.
19. An organic electroluminescence element material of claim 18 , wherein L 6 of the above Formula (5) represents a bivalent linking group derived from an aromatic hydrocarbon cyclic group, or a heterocyclic group.
20. An organic electroluminescence element comprising:
an anode and a cathode;
a light-emitting layer sandwiched between the anode and the cathode;
an electron inhibition layer between the anode and the cathode; and
an organic electroluminescence element material incorporated in the electron inhibition layer, the organic electroluminescence element material represented by Formula (1),
wherein
R 1 represents a hydrogen atom, an aliphatic group, an aromatic hydrocarbon cyclic group, or a heterocyclic group;
L 1 represents a linking group or a simple bond;
X represents O or S; and
the compound represented by Formula (1) may have a substituent at another position, the substituent selected from the group consisting of an alkyl group, a cycloalkyl group, an alkenyl group, an alkynyl group, an aromatic hydrocarbon ring group, an aromatic heterocyclic group, a heterocyclic group, an alkoxy group, a cycloalkoxy group, an aryloxy group, an alkylthio group, a cycloalkylthio group, an arylthio group, an alkoxycarbonyl group, an aryloxycarbonyl group, a sulfamoyl group, an acyl group, an acyloxy group, an amido group, a carbamoyl group, an ureido group, a sulfinyl group, an alkylsulfonyl group, an arylsulfonyl group, an amino group, a halogen atom, a fluorinated hydrocarbon group, a cyano group, and a silyl group.