Organic electroluminescent element, display device and lighting device
View Patent ↗Disclosed is an organic electroluminescent device having high external quantum efficiency and long life. Also disclosed are an illuminating device and, a display device. The organic electroluminescent device is characterized by containing at least one compound having a partial structure represented by the following general formula (1). [chemical formula 1] (1) In the formula, R 1 represents a group (preferably an aromatic hydrocarbon group, an aromatic heterocyclic group, an alkyl group or an alkoxy group) having 4-20 carbon atoms in total and a substituent having a formula weight of 70-350 (preferably an alkyl group or an alkoxy group); R 2 -R 4 independently represent a substituent; n2 represents a number of 0-4; n3 represents a number of 0-2; n4 represents a number of 0-8; and Q represents an atomic group necessary for forming an aromatic hydrocarbon ring or an aromatic heterocyclic ring.
1. An organic electroluminescent element comprising a compound having a partial structure represented by Formula (1) in the compound:
wherein R 1 is an alkyl group or an alkoxyl group, each having 4 to 20 carbon atoms; R 2 through R 4 are each independently a substituent; n2 is an integer of 0 to 4; n3 is an integer of 0 to 4; n4 is an integer of 0 to 8; and Q is a group of atoms necessary to form an aromatic hydrocarbon ring or an aromatic heterocyclic ring.
2. The organic electroluminescent element of claim 1 ,
wherein the partial structure represented by Formula (1) is a partial structure represented by Formula (2):
wherein R 1 , R 2 and R 3 are each synonymous with R 1 , R 2 and R 3 in Formula (1), respectively; R 5 is a substituent; n2 and n3 are the same number as n2 and n3 in Formula (1); and n5 is an integer of 0 to 4.
3. The organic electroluminescent element of claim 2 ,
wherein R 5 is a group 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 and an alkoxyl group.
4. The organic electroluminescent element of claim 1 ,
wherein the partial structure represented by Formula (1) is a partial structure represented by Formula (3):
wherein R 1 , R 2 and R 3 are each synonymous with R 1 , R 2 and R 3 in Formula (1), respectively; R 6 is a substituent; n2 and n3 are the same number as n2 and n3 in Formula (1); n6 is an integer of 0 to 7; and X is a chalcogen atom.
5. The organic electroluminescent element of claim 4 ,
wherein R 6 is a group 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 and an alkoxyl group.
6. The organic electroluminescent element comprising an organic layer which contains the compound described in claim 1 .
7. The organic electroluminescent element of claim 6 ,
wherein the organic layer is a light emission layer.
8. The organic electroluminescent element of claim 6 ,
wherein the organic layer is formed by a wet process.
9. A display device having the organic electroluminescent element of claim 1 .
10. An lighting device comprising the organic electroluminescent element of claim 1 .