Organic electroluminescence element
A light emitting organic thin film including at least one compound represented by Formula (PQ-1) and at least one compound represented by Formula (BN-1). In Formula (PQ-1), each of R a , R b and R c independently represents a hydrogen atom or an alkyl group, wherein any one of R a , R b and R c represents a hydrogen atom and the remaining two represent an alkyl group. Each of R 1 to R 5 independently represents a hydrogen atom, an alkyl group, an aryl group, a fluorine atom or a cyano group. Each of R x and R y independently represents an alkyl group or a phenyl group. In Formula (BN-1), Ar 1 represents an arylene group that may have a substituent Z. Ar 2 represents a condensed hydrocarbyl group that may have a substituent Z. Each of R 101 to R 113 independently represents a phenyl group, or the like.
1. A light emitting organic thin film comprising at least one compound represented by Formula (PQ-1) and at least one compound represented by Formula (BN-1):
wherein, in Formula (PQ-1), each of R a , R b and R c independently represents a hydrogen atom or an alkyl group, any one of R a , R b and R c represents a hydrogen atom and the remaining two represent an alkyl group, each of R 1 to R 5 independently represents a hydrogen atom, an alkyl group, a phenyl group, a fluorine atom or a cyano group, and each of R x and R y represents a methyl group;
in Formula (BN-1), Ar 1 represents an arylene group that may have a substituent Z, Ar 2 represents a tetracenyl group that may have a substituent Z, each of R 101 to R 113 represents a hydrogen atom, an alkyl group, a cycloalkyl group, or a phenyl group that may have a substituent Z;
the substituent Z represents an alkyl group, an alkenyl group, an aryl group, an aromatic heterocyclic group, an alkoxy group, an aryloxy group, a fluorine atom, a silyl group, an amino group, a cyano group or a combination thereof.
2. The light emitting organic thin film according to claim 1 ,
wherein, in Formula (PQ-1), two of R a , R b and R c represent a methyl group and the remaining one represents a hydrogen atom.
3. The light emitting organic thin film according to claim 2 ,
wherein, in Formula (PQ-1), R 1 to R 5 represent a hydrogen atom.
4. The light emitting organic thin film according to claim 1 ,
wherein, in Formula (PQ-1), R a and R c represent an alkyl group and R b represents a hydrogen group.
5. The light emitting organic thin film according to claim 4 ,
wherein, in Formula (PQ-1), R 1 to R 5 represent a hydrogen atom.
6. The light emitting organic thin film according to claim 1 ,
wherein, in Formula (BN-1), R 102 , R 105 , R 108 , R 109 , R 110 , R 111 and R 112 represent a hydrogen atom.
7. The light emitting organic thin film according to claim 1 ,
wherein, in Formula (PQ-1), R a and R c represent an alkyl group and R b represents a hydrogen group, and in Formula (BN-1), R 102 and R 105 represent a hydrogen atom.
8. A composition comprising the compound represented by Formula (PQ-1) and the compound represented by Formula (BN-1):
wherein, in Formula (PQ-1), each of R a , R b and R c independently represents a hydrogen atom or an alkyl group, any one of R a , R b and R c represents a hydrogen atom and the remaining two represent an alkyl group, each of R 1 to R 5 independently represents a hydrogen atom, an alkyl group, a phenyl group, a fluorine atom or a cyano group, and each of R x and R y represents a methyl group;
in Formula (BN-1), Ar 1 represents an arylene group that may have a substituent Z, Ar 2 represents a tetracenyl group that may have a substituent Z, each of R 101 to R 113 represents a hydrogen atom, an alkyl group, a cycloalkyl group, or a phenyl group that may have a substituent Z; and
the substituent Z represents an alkyl group, an alkenyl group, an aryl group, an aromatic heterocyclic group, an alkoxy group, an aryloxy group, a fluorine atom, a silyl group, an amino group, a cyano group or a combination thereof.
9. An organic electroluminescence device comprising a pair of electrodes, and an organic layer including a light emitting layer disposed between the electrodes, on a substrate,
wherein the light emitting layer comprises at least one compound represented by Formula (PQ-1) and at least one compound represented by Formula (BN-1):
wherein, in Formula (PQ-1), each of R a , R b and R c independently represents a hydrogen atom or an alkyl group, any one of R a , R b and R c represents a hydrogen atom and the remaining two represent an alkyl group, each of R 1 to R 5 independently represents a hydrogen atom, an alkyl group, a phenyl group, a fluorine atom or a cyano group, and each of R x and R y represents a methyl group;
in Formula (BN-1), Ar 1 represents an arylene group that may have a substituent Z, Ar 2 represents a tetracenyl group that may have a substituent Z, each of R 101 to R 113 represents a hydrogen atom, an alkyl group, a cycloalkyl group, or a phenyl group that may have a substituent Z; and
the substituent Z represents an alkyl group, an alkenyl group, an aryl group, an aromatic heterocyclic group, an alkoxy group, an aryloxy group, a fluorine atom, a silyl group, an amino group, a cyano group or a combination thereof.
10. The organic electroluminescence device according to claim 9
wherein the compound represented by Formula (BN-1) has no peak current value at 100 K to 150 K as determined by thermally stimulated current of a thin film formed to a film thickness of 100 nm by vacuum deposition of the compound.
11. The organic electroluminescence device according to claim 9 ,
wherein at least one layer of the organic layer is formed by a coating process using a solution or dispersion.
12. A display apparatus using the organic electroluminescence device according to claim 9 .
13. An illumination apparatus using the organic electroluminescence device according to claim 9 .