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 (3) in the molecule:
wherein R 1 is an aromatic hydrocarbon group or an aromatic heterocyclic group substituted by a substituent having 4 to 20 carbon atoms a formula weight of 70 to 350, and substituent is selected from the group consisting of:
an alkyl group, an alkoxyl group, a cycloalkyl group, an aryl group and an aromatic heterocyclic group;
R 2 , R 3 and R 6 are each independently a substituent; n2 is an integer of 0 to 4; n3 is an integer of 0 to 2; and n6 an integer of 0 to 6; and X is a chalcogen atom.
2. The organic electroluminescent element of claim 1 ,
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.
3. The organic electroluminescent element comprising an organic layer which contains the compound described in claim 1 .
4. The organic electroluminescent element of claim 3 ,
wherein the organic layer is a light emission layer.
5. The organic electroluminescent element of claim 3 ,
wherein the organic layer is formed by a wet process.
6. A display device having the organic electroluminescent element of claim 1 .
7. A lighting device comprising the organic electroluminescent element of claim 1 .