KR20190130510A - Compound and organic light emitting device comprising same - Google Patents

Abstract

The present specification provides a compound represented by chemical formula 1 and an organic light emitting device comprising the same. In an embodiment of the present invention, when an organic material layer of the organic light emitting device, in particular, a light emitting layer comprises the compound represented by chemical formula 1, the efficiency of a device can be improved or lifespan characteristics of the device may be improved.

Description

Compound and organic light emitting device including the same {COMPOUND AND ORGANIC LIGHT EMITTING DEVICE COMPRISING SAME}

The present invention provides a compound represented by Formula 1 and an organic light emitting device including the same.

This application claims the benefit of the filing date of Korean Patent Application No. 10-2018-0054968 filed with the Korea Intellectual Property Office on May 14, 2018, the entire contents of which are incorporated herein.

In general, organic light emitting phenomenon refers to a phenomenon of converting electrical energy into light energy using an organic material. An organic light emitting device using an organic light emitting phenomenon usually has a structure including an anode, a cathode, and an organic material layer therebetween. In this case, the organic material layer has a multi-layered structure composed of different materials in order to increase efficiency and stability of the organic light emitting device. For example, the organic material layer may include a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer, and the like. When the voltage is applied between the two electrodes in the structure of the organic light emitting device, holes are injected into the organic material layer in the anode, electrons are injected into the organic material layer, and excitons are formed when the injected holes and electrons meet. It glows when it falls to the ground.

There is a continuing need for the development of new materials for such organic light emitting devices.

Korean Laid-Open Patent Publication No. 10-2004-0049038

The present specification is to provide an organic light emitting device having a high luminous efficiency or good life characteristics by including the compound represented by the formula (1) in the organic light emitting device.

An exemplary embodiment of the present specification provides a compound represented by the following formula (1).

[Formula 1]

In Chemical Formula 1,

L1 and L2 are the same as or different from each other, and each independently a linear or branched chain alkylene group,

Y1 and Y2 are the same as or different from each other, and each independently a cycloalkyl group; Heterocyclic ketone group; Carbocyclic ketone group; Monocyclic or polycyclic aliphatic hydrocarbon ring groups; Monocyclic or polycyclic aryl groups; Monocyclic or polycyclic aliphatic heterocyclic groups; Or monocyclic or polycyclic aromatic heterocyclic group,

R1, R2, Rx, Ry and Rz are the same as or different from each other, and each independently hydrogen; heavy hydrogen; Halogen group; A silyl group unsubstituted or substituted with an alkyl group or an aryl group; An alkyl group; Alkenyl groups; Alkynyl group; Aryl group; Or a heterocyclic group,

n1 is an integer of 0 to 6, and when n1 is 2 or more, a plurality of-(L1-Y1) are the same as or different from each other,

n2 is an integer of 0 to 4, when n2 is 2 or more, a plurality of-(L2-Y2) are the same as or different from each other,

The sum of n1 and n2 is 1 or more,

a is an integer of 0 to 6, and when a is 2 or more, a plurality of R1 are the same as or different from each other,

b is an integer of 0-4, and when b is two or more, some R <2> is the same or different from each other.

An exemplary embodiment of the present specification is an organic light emitting device including a first electrode, a second electrode and one or more organic material layers provided between the first electrode and the second electrode, wherein the compound represented by Chemical Formula 1 is 1 It provides an organic light emitting device that is included in at least one layer of the organic material layer of the layer or more.

In one embodiment of the present invention, when the organic material layer of the organic light emitting device, in particular, the light emitting layer includes a compound represented by the formula (1) may improve the efficiency of the device or the life characteristics of the device.

FIG. 1 illustrates an example of an organic light emitting device including a substrate 1, an anode 2, an organic material layer 3, and a cathode 4.
2 shows a substrate 1, an anode 2, a hole injection layer 5, a first hole transport layer 6, a second hole transport layer 7, a light emitting layer 8, an electron transport layer 9, an electron injection layer. An example of an organic light emitting element consisting of 10 and a cathode 4 is shown.
3 shows a substrate 1, an anode 2, a hole injection layer 5, a first hole transport layer 6, a second hole transport layer 7, a light emitting layer 8, an electron injection and transport layer 11 and a cathode. The example of the organic light emitting element which consists of (4) is shown.

Hereinafter, the present invention will be described in more detail.

Examples of the substituents are described below, but are not limited thereto.

는 다른 치환기 또는 결합부에 결합되는 부위를 의미한다.In the present specification,

Means a site which is bonded to another substituent or binding moiety.

The term "substituted" means that the hydrogen atom bonded to the carbon atom of the compound is replaced with another substituent. The position at which the substituent is substituted is not limited as long as the position at which the hydrogen atom is substituted, that is, the position at which the substituent is substituted. When the substituents are two or more, two or more substituents may be the same or different from each other.

In the present specification, examples of the halogen group include fluorine, chlorine, bromine or iodine.

In the present specification, a chain alkylene group means a straight chain or branched divalent chain saturated hydrocarbon. The linear chain alkylene group may be methylene, ethylene, propylene, or the like, but is not limited thereto. The branched chain alkylene group may be dimethylmethylene, 1-methylethylene, 2-methylethylene, 1,1-dimethylethylene, or the like, but is not limited thereto.

In the present specification, an alkyl group means a straight or branched chain saturated hydrocarbon. Although carbon number of the said alkyl group is not specifically limited, It is preferable that it is 1-20. According to an exemplary embodiment, the alkyl group has 1 to 15 carbon atoms. According to another exemplary embodiment, the alkyl group has 1 to 10 carbon atoms. According to another exemplary embodiment, the alkyl group has 1 to 6 carbon atoms. The alkyl group may be chain or cyclic.

Specific examples of the chain alkyl group include methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, sec-butyl, 1-methylbutyl, 1-ethylbutyl, n-pentyl and isopentyl Neopentyl, n-hexyl, 1-methylpentyl, 2-methylpentyl, 4-methylpentyl, 3,3-dimethylbutyl, 2-ethylbutyl, heptyl, n-octyl, tert-octyl, 1-methylheptyl, 2-ethylhexyl, 2-propylpentyl, n-nonyl, 2,2-dimethylheptyl, 1-ethylpropyl, 1,1-dimethylpropyl, isohexyl, 4-methylhexyl, 5-methylhexyl, and the like. It is not limited.

Although carbon number of the said cyclic alkyl group (cycloalkyl group) is not specifically limited, It is preferable that it is 3-20. According to an exemplary embodiment, the cycloalkyl group has 3 to 16 carbon atoms. According to another exemplary embodiment, the cycloalkyl group has 3 to 12 carbon atoms. According to another exemplary embodiment, the cycloalkyl group has 3 to 8 carbon atoms. Specific examples of the cycloalkyl group include, but are not limited to, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, cyclooctyl, and the like.

In the present specification, the alkenyl group represents a hydrocarbon group having a carbon-carbon double bond, and the carbon number is not particularly limited, but is preferably 2 to 30. According to an exemplary embodiment, the alkenyl group has 2 to 20 carbon atoms. Specific examples of alkenyl groups include, but are not limited to, ethenyl, vinyl, propenyl, allyl, isopropenyl, butenyl, isobutenyl, n-pentenyl and n-hexenyl.

In the present specification, the alkynyl group represents a hydrocarbon group having a carbon-carbon triple bond, and the carbon number is not particularly limited, but is preferably 2 to 30. According to an exemplary embodiment, the alkynyl group has 2 to 20 carbon atoms. Specific examples of the alkynyl group include metainyl, ethynyl, 2-propynyl, 2-butynyl, 1-methyl-2-butynyl, 2-pentynyl, and the like, but are not limited thereto.

In the present specification, the silyl group may be represented by a chemical formula of -SiR ₁₁ R ₁₂ R ₁₃ , wherein R ₁₁ to R ₁₃ are each independently hydrogen; An alkyl group; Or an aryl group. In the present specification, the alkylsilyl group means a silyl group substituted with an alkyl group, and the arylsilyl group means a silyl group substituted with an aryl group. Specifically, the silyl group may be trimethylsilyl, triethylsilyl, t-butyldimethylsilyl, vinyldimethylsilyl, propyldimethylsilyl, triphenylsilyl, diphenylsilyl, phenylsilyl, and the like, but is not limited thereto.

In the present specification, the aliphatic hydrocarbon ring means a monovalent aliphatic hydrocarbon ring. The aliphatic hydrocarbon ring means a ring composed of only carbon and hydrogen atoms as a non-aromatic ring. Examples of aliphatic hydrocarbon rings include cyclopropane, cyclobutane, cyclobutene, cyclopentane, cyclopentene, cyclohexane, cyclohexene, 1,4-cyclohexadiene, cycloheptane, cycloheptene, cyclooctane, cyclooctene, etc. It is not limited to this.

In the present specification, an aryl group means a monocyclic or polycyclic aromatic hydrocarbon ring composed of only carbon and hydrogen atoms. According to an exemplary embodiment, the aryl group has 6 to 30 carbon atoms. The aryl group may be a monocyclic aryl group or a polycyclic aryl group. The monocyclic aryl groups include, but are not limited to, phenyl, biphenyl, terphenyl, and the like. Examples of the polycyclic aryl group include naphthyl, anthracenyl, phenanthrenyl, perrylenyl, fluoranthenyl, triphenylenyl, penalenyl, pyrenyl, tetrasenyl, chrysenyl, pentansenyl, fluorenyl, indenyl, Acenaphthyl, benzofluorenyl, spirofluorenyl, and the like.

In the present specification, the fluorenyl group may be substituted, and two substituents may be bonded to each other to form a spiro structure.

,

,

,

,

,

,

및

등이 있으나, 이에 한정되지 않는다.As the substituted fluorenyl group

,

,

,

,

,

,

And

Etc., but is not limited thereto.

In the present specification, the heterocyclic group is a ring having two or more elements constituting the ring. The heterocyclic group includes an aliphatic heterocyclic group and an aromatic heterocyclic group.

In the present specification, an aliphatic heterocyclic group means a monovalent aliphatic heterocyclic ring. The aliphatic heterocycle means an aliphatic ring containing at least one of heteroatoms in an atom constituting the ring. Examples of aliphatic heterocycles include oxirane, tetrahydrofuran, 1,4-dioxane, pyrrolidine, pyrrolidine-2,5-dione, piperidine, Morpholine, oxepan, azocaine, thiocaine and the like, but are not limited thereto.

In the present specification, the aromatic heterocyclic group means a monovalent aromatic heterocyclic ring. The aromatic heterocycle means an aromatic ring including one or more of the heteroatoms in the atoms constituting the ring. Examples of aromatic heterocycles include pyridine, pyrrole, pyrimidine, pyridazine, furan, thiophene, imidazole, parasol, oxazole, isoxazole, thiazole, isothiazole, triazole, oxadiazole, thia Diazoles, dithiazoles, tetrazole, pyrans, thiopyrans, diazines, oxazines, thiazines, dioxins, triazines, tetraazines, isoquinolines, quinolines, quinols, quinazolines, quinoxalines, naphthyridines, Acridine, phenanthridine, diazanaphthalene, driazaindene, indole, indolizine, benzothiazole, benzoxazole, benzimidazole, benzothiophene, benzofuran, dibenzothiophene, dibenzofuran, carba Sol, benzocarbazole, dibenzocarbazole, phenazine, imidazopyridine, phenoxazine, phenanthridine, indolocarbazole, indenocarbazole and the like.

In the present specification, the heterocyclic ketone group means a monovalent heterocyclic ketone. The heterocyclic ketone means a cyclic ketone in which at least two different atoms are present in the atoms constituting the ring. The heterocyclic ketone is, for example, pyrrolidone, pyrrolidin-2,5-dione, benzofuran-2 [3H] -one, 3a, 6,7,7a-tetrahydrobenzofuran-2 [ 3H] -one, 1H-isochromen-1-one, 5-pentanolide, and the like, but is not limited thereto.

In this specification, a carbocyclic ketone group means monovalent carbocyclic ketone. The carbocyclic ketone means a cyclic ketone in which the ring constituent atoms are composed only of carbon atoms. The carbocyclic ketone may be, for example, cyclopentanone, cyclohexanone, or the like, but is not limited thereto.

An exemplary embodiment of the present specification provides a compound represented by Chemical Formula 1.

In one embodiment of the present specification, L1 and L2 are the same as or different from each other, and each independently a linear or branched chain alkylene group having 1 to 10 carbon atoms.

In one embodiment of the present specification, L1 and L2 are the same as or different from each other, and each independently a linear or branched chain alkylene group having 1 to 8 carbon atoms.

In one embodiment of the present specification, L1 and L2 are the same as or different from each other, and each independently a linear or branched chain alkylene group having 1 to 6 carbon atoms.

In one embodiment of the present specification, L1 and L2 are the same as or different from each other, and each independently a linear or branched chain alkylene group having 1 to 5 carbon atoms.

In one embodiment of the present specification, L1 and L2 are the same as or different from each other, and are each independently a straight chain alkylene group having 1 to 10 carbon atoms.

In one embodiment of the present specification, L1 and L2 are the same as or different from each other, and are each independently a straight chain alkylene group having 1 to 5 carbon atoms.

In one embodiment of the present specification, L1 and L2 are each methylene.

In one embodiment of the present specification, Y1 and Y2 are the same as or different from each other, and each independently a cycloalkyl group; Heterocyclic ketone group; Carbocyclic ketone group; Monocyclic or polycyclic aliphatic hydrocarbon ring groups; Monocyclic or polycyclic aryl groups; Monocyclic or polycyclic aliphatic heterocyclic groups including one or more of O, N, and S; Or a monocyclic or polycyclic aromatic heterocyclic group including one or more of O, N, and S.

In one embodiment of the present specification, Y1 and Y2 are the same as or different from each other, and each independently a cycloalkyl group; Heterocyclic ketone group containing N; Carbocyclic ketone group; Monocyclic or polycyclic aliphatic hydrocarbon ring groups; Monocyclic or polycyclic aryl groups; Monocyclic or polycyclic aliphatic heterocyclic groups including O or S; Or a monocyclic or polycyclic aromatic heterocyclic group containing O or S.

In one embodiment of the present specification, Y1 and Y2 are the same as or different from each other, and each independently a cycloalkyl group having 3 to 8 carbon atoms; Heterocyclic ketone groups having 2 to 12 carbon atoms; Carbocyclic ketone groups having 4 to 14 carbon atoms; Monocyclic or polycyclic aliphatic hydrocarbon ring groups having 3 to 15 carbon atoms; Monocyclic or polycyclic aryl group having 6 to 25 carbon atoms; Monocyclic or polycyclic aliphatic heterocyclic groups having 2 to 20 carbon atoms; Or a monocyclic or polycyclic aromatic heterocyclic group having 2 to 20 carbon atoms.

In one embodiment of the present specification, Y1 and Y2 are the same as or different from each other, and each independently a cycloalkyl group having 3 to 6 carbon atoms; Heterocyclic ketone groups having 2 to 10 carbon atoms; Carbocyclic ketone groups having 4 to 12 carbon atoms; Monocyclic or polycyclic aliphatic hydrocarbon ring groups having 3 to 12 carbon atoms; Monocyclic or polycyclic aryl group having 6 to 18 carbon atoms; Monocyclic or polycyclic aliphatic heterocyclic groups having 2 to 16 carbon atoms; Or a monocyclic or polycyclic aromatic heterocyclic group having 2 to 16 carbon atoms.

In one embodiment of the present specification, Y1 and Y2 are the same as or different from each other, and each independently a cycloalkyl group having 3 to 6 carbon atoms; Heterocyclic ketone groups having 2 to 8 carbon atoms; Carbocyclic ketone groups having 4 to 9 carbon atoms; Monocyclic or polycyclic aliphatic hydrocarbon ring groups having 3 to 8 carbon atoms; Monocyclic or polycyclic aryl group having 6 to 15 carbon atoms; Monocyclic or polycyclic aliphatic heterocyclic groups having 2 to 12 carbon atoms; Or a monocyclic or polycyclic aromatic heterocyclic group having 2 to 12 carbon atoms.

In one embodiment of the present specification, Y1 and Y2 are the same as or different from each other, and each independently an aliphatic or aromatic ring group consisting of elements selected from the group consisting of N, O, S and C and having 5 or 6 members; Or a 5-membered cycloketone group consisting of elements selected from the group consisting of N and C.

In one embodiment of the present specification, Y1 and Y2 are the same as or different from each other, and each independently an aliphatic or aromatic ring group consisting of elements selected from the group consisting of N, O, S and C and having 5 or 6 members. .

In one embodiment of the present specification, Y1 and Y2 are the same as or different from each other, and each independently cyclopentyl; Cyclohexyl; Phenyl; Oxacyclopentyl; Oxacyclohexyl; Furanyl; Thiophenyl; Pyrrole-2,5-dionyl; Or pyrrolidine-2,5-dionyl.

In one embodiment of the present specification, R1 and R2 are the same as or different from each other, and each independently deuterium; Or an alkyl group having 1 to 10 carbon atoms.

In one embodiment of the present specification, R1 and R2 are the same as or different from each other, and each independently deuterium; Or an alkyl group having 1 to 6 carbon atoms.

In one embodiment of the present specification, R1 and R2 are the same as or different from each other, and each independently deuterium; Or an alkyl group having 1 to 3 carbon atoms.

In one embodiment of the present specification, R1 is hydrogen.

In one embodiment of the present specification, R2 is hydrogen.

In one embodiment of the present specification, R2 is methyl.

In one embodiment of the present specification, Rx and Rz are the same as or different from each other, and are each independently an alkyl group having 1 to 10 carbon atoms.

In one embodiment of the present specification, Rx and Rz are the same as or different from each other, and each independently an alkyl group having 1 to 8 carbon atoms.

In one embodiment of the present specification, Rx and Rz are the same as or different from each other, and are each independently an alkyl group having 1 to 6 carbon atoms.

In one embodiment of the present specification, Rx and Rz are the same as or different from each other, and each independently methyl; Isopropyl; Or 1-ethylpropyl.

In one embodiment of the present specification. Ry is hydrogen.

In one embodiment of the present specification, n1 is 1.

In one embodiment of the present specification, n2 is 1.

In one embodiment of the present specification, the sum of n1 and n2 is 1.

In one embodiment of the present specification, Chemical Formula 1 is represented by any one of the following Chemical Formulas 1-1 to 1-3.

[Formula 1-1]

[Formula 1-2]

[Formula 1-3]

In Chemical Formulas 1-1 to 1-3,

The definitions of L1, L2, Y1, Y2, R1, R2, Rx, Ry, Rx, a and b are the same as those defined in Chemical Formula 1.

In one embodiment of the present specification, Chemical Formula 1 is represented by any one of the following Chemical Formulas 2-1 to 2-6.

[Formula 2-1]

[Formula 2-2]

[Formula 2-3]

[Formula 2-4]

[Formula 2-5]

[Formula 2-6]

In Chemical Formulas 2-1 to 2-6,

Definitions of L1, Y1, R1, R2, Rx, Ry, Rz and b are the same as defined in the formula (1),

a is an integer of 0 to 5, and when a is 2 or more, R1 is the same as or different from each other.

In one embodiment of the present specification, Chemical Formula 1 is represented by any one of the following Chemical Formulas 2-1 and 2-3.

In one embodiment of the present specification, Chemical Formula 1 is represented by any one of the following Chemical Formulas 2-7 to 2-10.

[Formula 2-7]

[Formula 2-8]

[Formula 2-9]

[Formula 2-10]

In Chemical Formulas 2-7 to 2-10,

The definitions of L2, Y2, R1, R2, Rx, Ry, Rz, a and b are the same as defined in the formula (1).

In one embodiment of the present specification, Chemical Formula 1 is represented by the following Chemical Formula 3.

[Formula 3]

In Chemical Formula 3,

The definitions of L2, Y2, R1, R2, Rx, Ry, Rz and a are the same as those defined in Chemical Formula 1,

b is an integer of 0 to 3, when b is 2 or more, R2 is the same as or different from each other,

m1 and m2 are integers of 1-10, respectively.

In one embodiment of the present specification, m1 is 1.

In one embodiment of the present specification, m2 is 1.

In an exemplary embodiment of the present specification, when n1 is 1 and n2 is 0, (1) Y1 is a heterocyclic ketone group; Carbocyclic ketone group; Monocyclic or polycyclic aryl groups; Monocyclic or polycyclic aliphatic heterocyclic groups; Or a monocyclic or polycyclic aromatic heterocyclic group, or (2) Formula 1 is represented by the following Formula 5.

[Formula 5]

In Chemical Formula 5,

Y 1 is a cycloalkyl group; Or a monocyclic or polycyclic aliphatic hydrocarbon ring group,

e1 is an integer of 0 to 5, when e1 is 2 or more, R1 is the same as or different from each other,

e2 is an integer from 0 to 2, when e2 is 2, R2 is the same as or different from each other,

G1 and G2 are the same as or different from each other, and each independently an alkyl group,

The definitions of L1, R1, R2, Rx, Ry and Rz are as defined in Chemical Formula 1.

In an exemplary embodiment of the present specification, when n1 is 1 and n2 is 0, (1) Y1 is a heterocyclic ketone group; Carbocyclic ketone group; Monocyclic or polycyclic aryl groups; Or a monocyclic or polycyclic aromatic heterocyclic group, or (2) Formula 1 is represented by the following Formula 6.

[Formula 6]

In Chemical Formula 6,

Y 1 is a cycloalkyl group; Monocyclic or polycyclic aliphatic hydrocarbon ring groups; Or a monocyclic or polycyclic aliphatic heterocyclic group,

c1 is an integer of 0 to 5, when c1 is 2 or more, R1 is the same as or different from each other,

c2 is an integer of 0 to 2, when c2 is 2, R2 is the same as or different from each other,

G1 and G2 are the same as or different from each other, and each independently an alkyl group,

The definitions of L1, R1, R2, Rx, Ry and Rz are as defined in Chemical Formula 1.

In one embodiment of the present specification, when the n1 is 1 or more, the Y1 is a heterocyclic ketone group; Carbocyclic ketone group; Monocyclic or polycyclic aryl groups; Monocyclic or polycyclic aliphatic heterocyclic groups; Or a monocyclic or polycyclic aromatic heterocyclic group.

In one embodiment of the present specification, when the n1 is 1 or more, the Y1 is a heterocyclic ketone group; Carbocyclic ketone group; Monocyclic or polycyclic aryl groups; Or a monocyclic or polycyclic aromatic heterocyclic group.

In an exemplary embodiment of the present specification, when n1 is 1 and n2 is 0, Formula 1 is represented by the following Formula 7.

[Formula 7]

In Chemical Formula 7,

d1 is an integer of 0 to 5, when d1 is 2 or more, R1 is the same as or different from each other,

d2 is an integer of 0 to 2, when d2 is 2, R2 is the same as or different from each other,

G3 and G4 are the same as or different from each other, and each independently an alkyl group,

The definitions of L1, Y1, R1, R2, Rx, Ry and Rz are as defined in Chemical Formula 1.

In an exemplary embodiment of the present specification, when n1 is 1 and n2 is 0, Formula 1 is represented by Formula 7, wherein in Formula 7, Y1 is a heterocyclic ketone group; Carbocyclic ketone group; Monocyclic or polycyclic aryl groups; Monocyclic or polycyclic aliphatic heterocyclic groups; Or a monocyclic or polycyclic aromatic heterocyclic group.

In an exemplary embodiment of the present specification, when n1 is 1 and n2 is 0, Formula 1 is represented by Formula 7, wherein in Formula 7, Y1 is a heterocyclic ketone group; Carbocyclic ketone group; Monocyclic or polycyclic aryl groups; Or a monocyclic or polycyclic aromatic heterocyclic group.

In one embodiment of the present specification, G1 and G2 are the same as or different from each other, and each independently deuterium; Or an alkyl group having 1 to 10 carbon atoms.

In one embodiment of the present specification, G1 and G2 are the same as or different from each other, and each independently deuterium; Or an alkyl group having 1 to 6 carbon atoms.

In one embodiment of the present specification, G1 and G2 are the same as or different from each other, and each independently deuterium; Or an alkyl group having 1 to 3 carbon atoms.

In one embodiment of the present specification, G1 and G2 are each methyl.

In one embodiment of the present specification, G3 and G4 are the same as or different from each other, and each independently deuterium; Or an alkyl group having 1 to 10 carbon atoms.

In one embodiment of the present specification, G3 and G4 are the same as or different from each other, and each independently deuterium; Or an alkyl group having 1 to 6 carbon atoms.

In one embodiment of the present specification, G3 and G4 are the same as or different from each other, and each independently deuterium; Or an alkyl group having 1 to 3 carbon atoms.

In one embodiment of the present specification, G3 and G4 are each methyl.

In one embodiment of the present specification, the compound represented by Formula 1 is any one selected from the following compounds.

In one embodiment of the present specification, the compound represented by Chemical Formula 1 may be prepared by the method of the following Formula 1.

[Formula 1]

In Formula 1, the definitions of L1, L2, Y1, Y2, R1, R2, Rx, Ry, Rz, a, b, n1 and n2 are the same as defined in Chemical Formula 1.

Formula 1 is an example of a method of forming a compound represented by Formula 1, the synthesis method of the compound represented by Formula 1 is not limited to the general formula 1, some synthetic steps are known in the art It can be by method.

The present specification provides an organic light emitting device including the compound represented by Chemical Formula 1.

An exemplary embodiment of the present specification provides an organic light emitting device including a first electrode, a second electrode, and one or more organic material layers provided between the first electrode and the second electrode, wherein the compound represented by Chemical Formula 1 is Provided is an organic light emitting device included in at least one layer of at least one organic material layer.

The organic light emitting diode of the present specification may include a single layer or a multilayer organic material layer between the first electrode and the second electrode. For example, the organic material layer included in the organic light emitting device of the present invention may be a hole injection layer, a hole transport layer, a layer for simultaneously transporting and injecting holes, a hole control layer, a light emitting layer, an electron control layer, an electron transport layer, an electron injection layer, and an electron transport layer. It may be at least one of the layers to be injected at the same time.

In one embodiment of the present specification, the compound represented by Formula 1 is included in one or more layers of one or more light emitting layers.

In one embodiment of the present specification, the light emitting layer including the compound represented by Formula 1 is a red light emitting layer.

In one embodiment of the present specification, when the organic light emitting device includes one or more light emitting layers, each light emitting layer may have a different color.

In one embodiment of the present specification, the organic light emitting device including the compound represented by Formula 1 is a red organic light emitting device.

In one embodiment of the present specification, the compound represented by Chemical Formula 1 is included in an amount of 1 part by weight to 10 parts by weight or less based on 100 parts by weight of the total amount of the light emitting layer including the compound.

In one embodiment of the present specification, the light emitting layer including the compound represented by Formula 1 further includes a host material.

In one embodiment of the present specification, the host material included in the emission layer including the compound represented by Chemical Formula 1 is a carbazole derivative compound or an aromatic polycyclic compound including N.

In one embodiment of the present specification, the light emitting layer including the compound represented by Chemical Formula 1 further includes a host compound represented by the following Chemical Formula H.

[Formula H]

In Chemical Formula H,

G1 and G2 are the same as or different from each other, and each independently hydrogen; heavy hydrogen; Halogen group; Cyano group; An alkyl group; Cycloalkyl group; Silyl groups; Aryl group; Or a heterocyclic group or combine with an adjacent group to form a substituted or unsubstituted ring,

G3 and G4 are the same as or different from each other, and each independently an aryl group unsubstituted or substituted with an alkyl group, an aryl group, or a heterocyclic group; Or a heterocyclic group which is unsubstituted or substituted with an alkyl group, an aryl group or a heterocyclic group,

b1 is an integer of 0 to 7, and when b1 is 2 or more, a plurality of G1s are the same as or different from each other,

b2 is an integer of 0-7, and when b2 is 2 or more, some G2 is same or different from each other.

In one embodiment of the present specification, G1 combines with an adjacent group to form a benzene ring.

In one embodiment of the present specification, G4 is a heterocyclic group which is unsubstituted or substituted with an alkyl group, an aryl group, or a heterocyclic group, and includes N.

In one embodiment of the present specification, G4 is a heterocyclic group which is unsubstituted or substituted with an alkyl group, an aryl group or a heterocyclic group, and includes a 6-membered ring including N.

In one embodiment of the present specification, Chemical Formula H is represented by the following Chemical Formula H-1.

[Formula H-1]

In Chemical Formula H-1,

The definitions of G1 to G4 and b2 are the same as those defined in Formula H,

b3 is an integer of 0-9, and when b3 is two or more, some G1 is the same or different from each other.

In one embodiment of the present specification, the compound represented by Formula H is the following compound.

In one embodiment of the present specification, the compound represented by Chemical Formula 1 is included in at least one layer of a hole injection layer, a hole transport layer, a hole injection layer and a hole control layer at the same time.

In one embodiment of the present specification, the compound represented by Chemical Formula 1 is included in at least one layer of an electron injection layer, an electron transport layer, a layer simultaneously performing electron injection and transport, and an electron control layer.

In one embodiment of the present specification, the organic light emitting device may be an organic light emitting device having a normal structure in which an anode, one or more organic material layers, and a cathode are sequentially stacked on a substrate.

 In one embodiment of the present specification, the organic light emitting diode may be an organic light emitting diode having an inverted type in which a cathode, one or more organic material layers, and an anode are sequentially stacked on a substrate.

In one embodiment of the present specification, the first electrode is an anode, and the second electrode is a cathode.

In another exemplary embodiment, the first electrode is a cathode and the second electrode is an anode.

The structure of the organic light emitting device according to the exemplary embodiment of the present specification is illustrated in FIGS. 1 to 3.

As shown in FIG. 1, an organic light emitting diode according to an exemplary embodiment of the present invention may include a substrate 1, an anode 2, an organic material layer 3, and a cathode 4. In one embodiment, the compound represented by Formula 1 is included in the organic material layer (3).

As shown in FIG. 2, the organic light emitting diode according to the exemplary embodiment of the present invention includes a substrate 1, an anode 2, a hole injection layer 5, a first hole transport layer 6, and a second hole transport layer 7. ), A light emitting layer 8, an electron transport layer 9, an electron injection layer 10, and a cathode 4. In one embodiment, the compound represented by Formula 1 is included in the light emitting layer (8).

3 shows a substrate 1, an anode 2, a hole injection layer 5, a first hole transport layer 6, a second hole transport layer 7, a light emitting layer 8, an electron injection and transport layer 11 and a cathode. The example of the organic light emitting element which consists of (4) is shown. In one embodiment, the compound represented by Formula 1 is included in the light emitting layer (8).

However, the structure of the organic light emitting device according to the exemplary embodiment of the present specification is not limited to FIGS. 1 to 3, and may be any one of the following structures.

(1) anode / hole transport layer / light emitting layer / cathode

(2) Anode / hole injection layer / hole transport layer / light emitting layer / cathode

(3) Anode / hole transport layer / light emitting layer / electron transport layer / cathode

(4) Anode / hole transport layer / light emitting layer / electron transport layer / electron injection layer / cathode

(5) Anode / hole injection layer / hole transport layer / light emitting layer / electron transport layer / cathode

(6) Anode / hole injection layer / hole transport layer / light emitting layer / electron transport layer / electron injection layer / cathode

(7) Anode / hole transport layer / hole control layer / light emitting layer / electron transport layer / cathode

(8) Anode / hole transport layer / hole control layer / light emitting layer / electron transport layer / electron injection layer / cathode

(9) Anode / hole injection layer / hole transport layer / hole control layer / light emitting layer / electron transport layer / cathode

(10) Anode / hole injection layer / hole transport layer / hole control layer / light emitting layer / electron transport layer / electron injection layer / cathode

(11) Anode / hole transport layer / light emitting layer / electron control layer / electron transport layer / cathode

(12) Anode / hole transport layer / light emitting layer / electron control layer / electron transport layer / electron injection layer / cathode

(13) Anode / hole injection layer / hole transport layer / light emitting layer / electron control layer / electron transport layer / cathode

(14) Anode / hole injection layer / hole transport layer / light emitting layer / electron control layer / electron transport layer / electron injection layer / cathode

When the organic light emitting device includes a plurality of organic material layers, the organic material layers may be formed of the same material or different materials.

For example, the organic light emitting device of the present specification may be manufactured by sequentially stacking a first electrode, an organic material layer, and a second electrode on a substrate. At this time, by using a physical vapor deposition (PVD, physical vapor deposition) such as sputtering (e-beam evaporation), by depositing a metal or conductive metal oxide or an alloy thereof on the substrate It can be prepared by forming an anode, forming an organic material layer including a hole injection layer, a hole transport layer, a light emitting layer and an electron transport layer thereon, and then depositing a material that can be used as a cathode thereon.

In addition, the compound represented by Chemical Formula 1 may be formed as an organic material layer by a solution coating method as well as a vacuum deposition method in manufacturing the organic light emitting device. Here, the solution coating method means spin coating, dip coating, doctor blading, inkjet printing, screen printing, spray method, roll coating, etc., but is not limited thereto.

In addition to such a method, an organic light emitting device may be manufactured by sequentially depositing an organic material layer and an anode material on a substrate (International Patent Application Publication No. 2003/012890). However, the manufacturing method is not limited thereto.

As the anode material, a material having a large work function is usually preferred to facilitate hole injection into the organic material layer. Specific examples of the positive electrode material that can be used in the present invention include metals such as vanadium, chromium, copper, zinc and gold or alloys thereof; Metal oxides such as zinc oxide, indium oxide, indium tin oxide (ITO), indium zinc oxide (IZO); Combinations of metals and oxides such as ZnO: Al or SnO ₂ : Sb; Conductive polymers such as poly (3-methylthiophene), poly [3,4- (ethylene-1,2-dioxy) thiophene] (PEDOT), polypyrrole and polyaniline, and the like, but are not limited thereto.

It is preferable that the cathode material is a material having a small work function to facilitate electron injection into the organic material layer. Specific examples of the negative electrode material include metals such as magnesium, calcium, sodium, potassium, titanium, indium, yttrium, lithium, gadolinium, aluminum, silver, tin, and lead or alloys thereof; Multilayer structure materials such as LiF / Al or LiO ₂ / Al, and the like, but are not limited thereto.

The hole injection layer is a layer for injecting holes received from the electrode into the light emitting layer or an adjacent layer provided toward the light emitting layer. The hole injection material has a capability of transporting holes, has an effect of hole injection at the anode, an excellent hole injection effect on the light emitting layer or the light emitting material, and transfers excitons generated from the light emitting layer to the electron injection layer or the electron injection material. It is preferable to use the compound which prevents and is excellent in thin film formation ability. The highest occupied molecular orbital (HOMO) of the hole injection material is preferably between the work function of the positive electrode material and the HOMO of the surrounding organic material layer. Specific examples of the hole injection material include metal porphyrin, oligothiophene, arylamine-based organic material, hexanitrile hexaazatriphenylene-based organic material, quinacridone-based organic material, and perylene Organic, anthraquinone, and polyaniline and polythiophene-based conductive polymers, but are not limited thereto.

The hole transport layer is a layer that receives holes from the hole injection layer and transports holes to the light emitting layer. As the hole transporting material, a material capable of transporting holes from the anode or the hole injection layer to be transferred to the light emitting layer is suitable. Specific examples of the hole transport material include, but are not limited to, an arylamine-based organic material, a conductive polymer, and a block copolymer having a conjugated portion and a nonconjugated portion together.

The hole control layer is a layer for preventing the flow of the electrons to the anode to the light emitting layer and to control the flow of holes flowing into the light emitting layer to control the performance of the entire device. As the hole control material, a compound having the ability to prevent the inflow of electrons from the light emitting layer to the anode and to control the flow of holes injected to the light emitting layer or the light emitting material is preferable. In one embodiment, an arylamine-based organic material may be used as the hole control layer, but is not limited thereto.

The light emitting material is a material capable of emitting light in the visible region by transporting and combining holes and electrons from the hole transport layer and the electron transport layer, respectively, and a material having good quantum efficiency with respect to fluorescence or phosphorescence is preferable. Specific examples thereof include 8-hydroxyquinoline aluminum complex (Alq ₃ ); Carbazole series compounds; Dimerized styryl compounds; BAlq; 10-hydroxybenzoquinoline-metal compound; Benzoxazole, benzothiazole and benzimidazole series compounds; Poly (p-phenylenevinylene) (PPV) -based polymers; Spiro compounds; Polyfluorene, rubrene and the like, but are not limited thereto.

The light emitting layer may include a host material and a dopant material.

Examples of the host material include a condensed aromatic ring derivative or a hetero ring-containing compound. Specifically, the condensed aromatic ring derivatives include anthracene derivatives, pyrene derivatives, naphthalene derivatives, pentacene derivatives, phenanthrene compounds, and fluoranthene compounds, and the heterocyclic compounds include dibenzofuran derivatives, ladder type furan compounds, Pyrimidine derivatives and the like, but is not limited thereto.

The dopant material of the light emitting layer includes an aromatic amine derivative, a styrylamine compound, a boron complex, a fluoranthene compound, a metal complex, and the like. As the aromatic amine derivative, pyrene, anthracene, chrysene, periplanthene and the like having an arylamine group may be used as a condensed aromatic ring derivative having a substituted or unsubstituted arylamine group. As the styrylamine compound, a compound in which at least one arylvinyl group is substituted with a substituted or unsubstituted arylamine may be used. Examples of the styrylamine compound include, but are not limited to, styrylamine, styryldiamine, styryltriamine, styryltetraamine, and the like. The metal complex may be an iridium complex, a platinum complex, or the like, but is not limited thereto.

The electron control layer is a layer that blocks the flow of holes from the light emitting layer to the cathode and controls the performance of the entire device by adjusting the electrons flowing into the light emitting layer. As the electron adjusting material, a compound having the ability to prevent the inflow of holes from the light emitting layer to the cathode and to control the electrons injected into the light emitting layer or the light emitting material is preferable. As the electron control material, an appropriate material may be used according to the configuration of the organic material layer used in the device. The electron control layer is positioned between the light emitting layer and the cathode, preferably provided in direct contact with the light emitting layer.

The electron transport layer is a layer that receives electrons from the electron injection layer and transports the electrons to the light emitting layer. The electron transporting material is a material capable of injecting electrons well from the cathode and transferring the electrons to the light emitting layer. A material having high mobility to electrons is suitable. Examples of the electron transporting material include Al complexes of 8-hydroxyquinoline; Complexes including Alq ₃ ; Organic radical compounds; Hydroxyflavone-metal complexes and the like, but are not limited thereto. The electron transport layer can be used with any desired negative electrode material, as used according to the prior art. In one embodiment, the negative electrode material includes a material having a low work function; And aluminum layers or silver layers. Examples of the material having a low work function include cesium, barium, calcium, ytterbium and samarium, and after forming a layer from the material, an aluminum layer or a silver layer may be formed on the layer.

The electron injection layer is a layer for injecting electrons received from the electrode into the light emitting layer. The electron injecting material has an ability to transport electrons, has an electron injection effect from a cathode, an excellent electron injection effect on a light emitting layer or a light emitting material, and transfers excitons generated in the light emitting layer to a hole injection layer or a hole injection material. It is preferable to use a compound which prevents the addition and has excellent thin film forming ability. Specifically, fluorenone, anthraquinodimethane, diphenoquinone, thiopyran dioxide, oxazole, oxadiazole, triazole, imidazole, benzimidazole, perylenetetracarboxylic acid, preorenylidene methane, anthrone and the like Derivatives thereof, metal complex compounds and nitrogen-containing five-membered ring derivatives, and the like, but are not limited thereto.

Examples of the metal complex compound include 8-hydroxyquinolinato lithium, bis (8-hydroxyquinolinato) zinc, bis (8-hydroxyquinolinato) copper, bis (8-hydroxyquinolinato) manganese, Tris (8-hydroxyquinolinato) aluminum, tris (2-methyl-8-hydroxyquinolinato) aluminum, tris (8-hydroxyquinolinato) gallium, bis (10-hydroxybenzo [h] Quinolinato) beryllium, bis (10-hydroxybenzo [h] quinolinato) zinc, bis (2-methyl-8-quinolinato) chlorogallium, bis (2-methyl-8-quinolinato) ( o-cresolato) gallium, bis (2-methyl-8-quinolinato) (1-naphtolato) aluminum, bis (2-methyl-8-quinolinato) (2-naphtolato) gallium, It is not limited to this.

The organic light emitting device according to the present specification may be a top emission type, a bottom emission type, or a double side emission type according to a material used.

Hereinafter, the method and properties of the compound of the present invention and the organic light emitting device including the same for the detailed understanding of the present invention will be described.

Preparation Example 1 Synthesis of Compound 1

(1) Synthesis of Intermediate 2-A

In a round bottom flask under nitrogen, Compound 1-A (18.9 g, 60 mmol), IrCl ₃ (6.847 g, 22.95 mmol), 225 ml of 2-ethoxyethanol and 75 ml of DI-Water were added and refluxed for one day. After the reaction was completed, the temperature was lowered, filtered under reduced pressure, and washed with methanol to prepare Compound 2-A. (9.8g, yield 49%)

(2) Synthesis of Compound 1

In a round bottom flask under nitrogen, compound 2-A (9 g, 5.25 mmol), potassium carbonate (7.26 g, 52.53 mmol), pentane-2,4-dione (5.26) g, 52.53 mmol) and 300 ml of 2-ethoxyethanol were added thereto, and the resultant was stirred at room temperature for 48 hours. The resulting precipitate was filtered under reduced pressure and washed with methanol. Compound 1 was prepared by separation via column chromatography (4 g, yield 41%, MS: [M + H] ⁺ = 921).

Preparation Example 2 Synthesis of Compound 2

(1) Synthesis of Intermediate 2-B

In a round bottom flask under nitrogen, Compound 1-B (18.9 g, 60 mmol), IrCl ₃ (6.847 g, 22.95 mmol), 225 ml of 2-ethoxyethanol and 75 ml of DI-Water were added and refluxed for one day. After the completion of the reaction, the temperature was lowered, filtered and washed with methanol under reduced pressure to obtain Compound 2-B. (9.1g, yield 46%)

(2) Synthesis of Compound 2

In a round bottom flask under nitrogen, compound 2-B (9 g, 5.25 mmol), potassium carbonate (7.26 g, 52.53 mmol), Pentane-2,4-dione (5.26) g, 52.53 mmol) and 300 ml of 2-ethoxyethanol were added thereto, and the resultant was stirred at room temperature for 48 hours. The resulting precipitate was filtered under reduced pressure and washed with methanol. Compound 2 was prepared by separation through column chromatography. (3.8 g, yield 39%, MS: [M + H] ⁺ = 921)

Preparation Example 3 Synthesis of Compound 3

(1) Synthesis of Intermediate 2-C

In a round bottom flask under nitrogen, Compound 1-C (18.9 g, 60 mmol), IrCl ₃ (6.847 g, 22.95 mmol), 225 ml of 2-ethoxyethanol and 75 ml of DI-Water were added and refluxed for one day. After the reaction was completed, the temperature was lowered, filtered under reduced pressure, and washed with methanol to prepare Compound 2-C. (9.4g, 47% yield)

(2) Synthesis of Compound 3

In a round bottom flask under nitrogen, Compound 2-C (9 g, 5.25 mmol), potassium carbonate (7.26 g, 52.53 mmol), Pentane-2,4-dione (5.26) g, 52.53 mmol) and 300 ml of 2-ethoxyethanol were added thereto, and the resultant was stirred at room temperature for 48 hours. The resulting precipitate was filtered under reduced pressure and washed with methanol. Compound 3 was prepared by separation via column chromatography (4.1 g, yield 42%, MS: [M + H] ⁺ = 921).

Preparation Example 4 Synthesis of Compound 4

(1) Synthesis of Intermediate 2-D

In a round bottom flask under nitrogen, Compound 1-D (20.65 g, 60 mmol), IrCl ₃ (6.847 g, 22.95 mmol), 225 ml of 2-ethoxyethanol and 75 ml of DI-Water were added and refluxed for one day. After completion of the reaction, the temperature was lowered, filtered under reduced pressure, and washed with methanol to prepare compound 2-D. (8.7g, 41% yield)

(2) Synthesis of Compound 4

In a round bottom flask under nitrogen, compound 2-D (8 g, 4.37 mmol), potassium carbonate (6.045 g, 43.74 mmol), pentane-2,4-dione (4.38) g, 43.74 mmol) and 300 ml of 2-ethoxyethanol were added thereto, and the resultant was stirred at room temperature for 48 hours. The resulting precipitate was filtered under reduced pressure and washed with methanol. Compound 4 was prepared by separation through column chromatography. (3.7 g, yield 43%, MS: [M + H] ⁺ = 979)

Preparation Example 5 Synthesis of Compound 5

(1) Synthesis of Intermediate 2-E

In a round bottom flask under nitrogen, Compound 1-E (20.65 g, 60 mmol), IrCl ₃ (6.847 g, 22.95 mmol), 225 ml of 2-ethoxyethanol and 75 ml of DI-Water were refluxed for one day. After the reaction was completed, the temperature was lowered, filtered under reduced pressure, and washed with methanol to prepare Compound 2-E. (9 g, 43% yield)

(2) Synthesis of Compound 5

In a round bottom flask under nitrogen, compound 2-E (9 g, 4.92 mmol), calcium carbonate (6.8 g, 49.21 mmol), pentane-2,4-dione (4.93 g, 49.21 mmol) and 300 ml of 2-ethoxyethanol were added thereto, and the resultant was stirred at room temperature for 48 hours. The resulting precipitate was filtered under reduced pressure and washed with methanol. Compound 5 was prepared by separation via column chromatography (4.1 g, yield 43%, MS: [M + H] ⁺ = 979).

Preparation Example 6 Synthesis of Compound 6

(1) Synthesis of Intermediate 2-F

In a round bottom flask under nitrogen, Compound 1-F (20 g, 58 mmol), IrCl ₃ (6.847 g, 22.95 mmol), 225 ml of 2-ethoxyethanol and 75 ml of DI-Water were added and refluxed for one day. After the reaction was completed, the temperature was lowered, filtered under reduced pressure, and washed with methanol to obtain Compound 2-F. (8.2g, Yield 39%)

(2) Synthesis of Compound 6

In a round bottom flask under nitrogen, compound 2-F (8 g, 4.4 mmol), potassium carbonate (6.07 g, 43.93 mmol), pentane-2,4-dione (4.4 g, 43.93 mmol) and 300 ml of 2-ethoxyethanol were added thereto, and the resultant was stirred at room temperature for 48 hours. The resulting precipitate was filtered under reduced pressure and washed with methanol. Compound 6 was prepared by separation via column chromatography (3.4 g, yield 39%, MS: [M + H] ⁺ = 975).

Preparation Example 7 Synthesis of Compound 7

(1) Synthesis of Intermediate 2-G

In a round bottom flask under nitrogen, Compound 1-G (20 g, 69 mmol), IrCl- ₃ (6.847 g, 22.95 mmol), 225 ml of 2-ethoxyethanol and 75 ml of DI-Water were added and refluxed for one day. After the reaction was completed, the temperature was lowered, filtered under reduced pressure, and washed with methanol to prepare compound 2-G. (5.4g, yield 46%)

(2) Synthesis of Compound 7

In a round bottom flask under nitrogen, compound 2-G (5 g, 4.86 mmol), potassium carbonate (6.72 g, 48.63 mmol), pentane-2,4-dione (4.86) g, 48.63 mmol) and 300 ml of 2-ethoxyethanol were added thereto, and the resultant was stirred at room temperature for 48 hours. The resulting precipitate was filtered under reduced pressure and washed with methanol. Compound 7 was prepared by separation via column chromatography (3.2 g, yield 38%, MS: [M + H] ⁺ = 865).

Preparation Example 8 Synthesis of Compound 8

(1) Synthesis of Intermediate 2-H

In a round bottom flask under nitrogen, Compound 1-H (20 g, 63.2 mmol), IrCl ₃ (6.847 g, 22.95 mmol), 225 ml of 2-ethoxyethanol and 75 ml of DI-Water were added and refluxed for one day. After the completion of the reaction, the temperature was lowered, filtered and washed with methanol under reduced pressure to obtain Compound 2-H. (8.1g, 41% yield)

(2) Synthesis of Compound 8

In a round bottom flask under nitrogen, compound 2-H (8 g, 4.71 mmol), potassium carbonate (4.03 g, 29.12 mmol), pentane-2,4-dione (2.92) g, 29.12 mmol) and 300 ml of 2-ethoxyethanol were added thereto, and the resultant was stirred at room temperature for 48 hours. The resulting precipitate was filtered under reduced pressure and washed with methanol. Compound 8 was prepared by separation via column chromatography (1.9 g, yield 35%, MS: [M + H] ⁺ = 923).

Preparation Example 9 Synthesis of Compound 9

Compound 9 was synthesized in the same manner as in Preparation Example 1, except that 2,6-dimethylheptane-3,5-dione (2,6-dimethylheptane-3,5-dione) was used instead of acetylacetone. (MS: [M + H] ⁺ = 997)

Preparation Example 10 Synthesis of Compound 10

Compound 10 was synthesized in the same manner as in Example 2, except that 2,6-dimethylheptane-3,5-dione was used instead of acetylacetone. (MS: [M + H] ⁺ = 997)

Preparation Example 11 Synthesis of Compound 11

Compound 11 was synthesized in the same manner as in Preparation Example 3, except that 2,6-dimethylheptane-3,5-dione (2,6-dimethylheptane-3,5-dione) was used instead of acetylacetone. (MS: [M + H] ⁺ = 997)

Preparation Example 12 Synthesis of Compound 12

Compound 12 was synthesized in the same manner as in Preparation Example 4, except that 2,6-dimethylheptane-3,5-dione (2,6-dimethylheptane-3,5-dione) was used instead of acetylacetone. (MS: [M + H] ⁺ = 1035)

Preparation Example 13 Synthesis of Compound 13

Compound 13 was synthesized in the same manner as in Preparation Example 5, except that 2,6-dimethylheptane-3,5-dione was used instead of acetylacetone. (MS: [M + H] ⁺ = 1035)

Preparation 14 Synthesis of Compound 14

Compound 14 was synthesized in the same manner as in Example 6, except that 2,6-dimethylheptane-3,5-dione was used instead of acetylacetone. (MS: [M + H] ⁺ = 1031)

Preparation Example 15 Synthesis of Compound 15

Compound 15 was synthesized in the same manner as in Example 7, except that 2,6-dimethylheptane-3,5-dione was used instead of acetylacetone. (MS: [M + H] ⁺ = 921)

Preparation Example 16 Synthesis of Compound 16

Compound 16 was synthesized in the same manner as in Preparation Example 8, except that 2,6-dimethylheptane-3,5-dione (2,6-dimethylheptane-3,5-dione) was used instead of acetylacetone. (MS: [M + H] ⁺ = 979)

Preparation Example 17 Synthesis of Compound 17

Compound 17 was synthesized in the same manner as in Example 1, except that 3,7-diethylnonane-4,6-dione was used instead of acetylacetone. : [M + H] ⁺ = 1033)

Preparation Example 18 Synthesis of Compound 18

Compound 18 was synthesized in the same manner as in Preparation Example 2, except that 3,7-diethylnonane-4,6-dione was used instead of acetylacetone. (MS: [M + H] ⁺ = 1033)

Preparation Example 19 Synthesis of Compound 19

Compound 19 was synthesized in the same manner as in Preparation Example 3, except that 3,7-diethylnonane-4,6-dione (3,7-Diethylnonane-4,6-dione) was used instead of acetylacetone. (MS: [M + H] ⁺ = 1033)

Preparation Example 20 Synthesis of Compound 20

Compound 20 was synthesized in the same manner as in Preparation Example 4, except that 3,7-diethylnonane-4,6-dione was used instead of acetylacetone. (MS: [M + H] ⁺ = 1091)

Preparation Example 21 Synthesis of Compound 21

Compound 21 was synthesized in the same manner as in Preparation Example 5, except that 3,7-diethylnonane-4,6-dione (3,7-Diethylnonane-4,6-dione) was used instead of acetylacetone. (MS: [M + H] ⁺ = 1091)

Preparation Example 22 Synthesis of Compound 22

Compound 22 was synthesized in the same manner as in Example 6, except that 3,7-diethylnonane-4,6-dione was used instead of acetylacetone. (MS: [M + H] ⁺ = 1087)

Preparation 23: Synthesis of Compound 23

Compound 23 was synthesized in the same manner as in Example 7, except that 3,7-diethylnonane-4,6-dione was used instead of acetylacetone. (MS: [M + H] ⁺ = 997)

Preparation Example 24 Synthesis of Compound 24

Compound 24 was synthesized in the same manner as in Preparation Example 8, except that 3,7-diethylnonane-4,6-dione (3,7-Diethylnonane-4,6-dione) was used instead of acetylacetone. (MS: [M + H] ⁺ = 1035)

Preparation 25 Synthesis of Compound 25

(1) Synthesis of Intermediate 2-I

In a round bottom flask under nitrogen, Compound 1-I (18.5g, 63.9mmol), IrCl ₃ (6.847g, 22.95mmol), 225ml 2-ethoxyethanol and 75ml DI-Water were refluxed for one day. . After the completion of the reaction, the temperature was lowered, filtered and washed with methanol under reduced pressure to obtain Compound 2-I. (7.9g, Yield 42.7%)

(2) Synthesis of Compound 25

In a round bottom flask under nitrogen, compound 2-I (7 g, 4.35 mmol), calcium carbonate (6.01 g, 43.5 mmol), pentane-2,4-dione (4.56) g, 43.51 mmol) and 300 ml of 2-ethoxyethanol were added thereto, and the resultant was stirred at room temperature for 48 hours. The resulting precipitate was filtered under reduced pressure and washed with methanol. Compound 25 was prepared by separation via column chromatography (3g, yield 39.7%, MS: [M + H] ⁺ = 869).

Preparation 26: Synthesis of Compound 26

(1) Synthesis of Intermediate 2-J

In a round bottom flask under nitrogen, Compound 1-J (20.3 g, 63.9 mmol), IrCl ₃ (6.847 g, 22.95 mmol), 225 ml of 2-ethoxyethanol and 75 ml of DI-Water were refluxed for one day. . After the reaction was completed, the temperature was lowered, filtered under reduced pressure, and washed with methanol to prepare compound 2-J. (13.2g, yield 48%)

(2) Synthesis of Compound 26

In a round bottom flask under nitrogen, compound 2-J (7.48 g, 4.35 mmol), potassium carbonate (6.01 g, 43.5 mmol), pentane-2,4-dione ( 4.56 g, 43.51 mmol) and 300 ml of 2-ethoxyethanol were added thereto, and the resultant was stirred at room temperature for 48 hours. The resulting precipitate was filtered under reduced pressure and washed with methanol. Compound 26 was prepared by separation via column chromatography (1.4 g, yield 35.4%, MS: [M + H] ⁺ = 924).

Example 1

Fischer Co. was used. Distilled water was used in Millipore Co. Secondly filtered distilled water was used as a filter of the product. After the ITO was washed for 30 minutes, the ultrasonic cleaning was repeated twice with distilled water for 10 minutes. After washing the distilled water, the ultrasonic washing in the order of isopropyl alcohol, acetone, methanol solvent and dried. Hexanitrile hexaazatriphenylene (HAT-CN) was thermally vacuum deposited to a thickness of 50 kPa on the thus prepared ITO transparent electrode to form a hole injection layer. The following HT1 compound for transporting holes was vacuum deposited thereon, followed by the deposition of the following HT2 compound to form a first (700 kV) and a second hole transport layer (200 kPa). Next, the following H1 compound and compound 1 were vacuum-deposited to form a light emitting layer (300 되도록) on the second hole transport layer so that Compound 1 contained 3 parts by weight based on 100 parts by weight of the total weight of the following H1 compound and Compound 1. Then, the following E0 compound was thermally vacuum deposited (300 kPa) sequentially with an electron injection and transport layer. After sequentially depositing lithium fluoride (LiF) having a thickness of 12 kPa and aluminum having a thickness of 2,000 kPa on the electron transport layer, an organic light emitting device was manufactured. In the above process, the deposition rate of the organic material was maintained at 1 Å / sec, the deposition rate of LiF was 0.2 Å / sec, and the deposition rate of aluminum was maintained at 3 Å / sec to 7 Å / sec.

Examples 2 to 10

The organic light emitting diodes of Examples 2 to 10 were prepared in the same manner as in Example 1, except that the compounds shown in Table 1 were used instead of Compound 1 as phosphorescent dopants, respectively.

Comparative Examples 1 to 7

The organic light emitting diodes of Comparative Examples 1 to 7 were prepared in the same manner as in Example 1, except that the compounds shown in Table 1 were used instead of Compound 1 as phosphorescent dopants, respectively.

Table 1 shows the results of the organic light emitting devices manufactured according to Examples 1 to 10 and Comparative Examples 1 to 7. Voltage, efficiency and emission color are data at 5000 nit luminance. Life is the time when the initial photocurrent value is viewed as 100% and the photocurrent value is 98%.

Dopant
matter Driving voltage (V) Efficiency (cd / A) life span
(T98, h,) Example 1 One 4.6 30.2 52 Example 2 5 4.5 30.4 56 Example 3 7 4.7 31.8 50 Example 4 10 4.5 30.0 58 Example 5 12 4.6 29.5 50 Example 6 16 4.7 31.24 48 Example 7 19 4.6 31.3 52 Example 8 22 4.5 30.8 49 Example 9 25 4.6 29.5 56 Example 10 26 4.6 33.8 56 Comparative Example 1 E1 4.6 25.1 35 Comparative Example 2 E2 4.7 25.1 32 Comparative Example 3 E3 4.8 25.4 40 Comparative Example 4 E4 4.6 24.8 37 Comparative Example 5 E5 4.5 25.3 34 Comparative Example 6 E6 4.6 26.8 42 Comparative Example 7 E7 4.6 24.5 35

As can be seen from Table 1, when the compound of the present invention is used as a phosphorescent dopant material, it was confirmed that the excellent properties in terms of life compared to the comparative examples using the compounds E1 to E7. Through this, it was confirmed that the type of the substituent affects the efficiency and life. In particular, it was determined that better performance was obtained through the control of the π-π bonds between compounds.

1: substrate
2: anode
3: organic layer
4: cathode
5: hole injection layer
6: first hole transport layer
7: second hole transport layer
8: light emitting layer
9: electron transport layer
10: electron injection layer
11: electron injection and transport layer

Claims (12)

Compound represented by the following formula (1):
[Formula 1]

In Chemical Formula 1,
L1 and L2 are the same as or different from each other, and each independently a linear or branched chain alkylene group,
Y1 and Y2 are the same as or different from each other, and each independently a cycloalkyl group; Heterocyclic ketone group; Carbocyclic ketone group; Monocyclic or polycyclic aliphatic hydrocarbon ring groups; Monocyclic or polycyclic aryl groups; Monocyclic or polycyclic aliphatic heterocyclic groups; Or monocyclic or polycyclic aromatic heterocyclic group,
R1, R2, Rx, Ry and Rz are the same as or different from each other, and each independently hydrogen; heavy hydrogen; Halogen group; A silyl group unsubstituted or substituted with an alkyl group or an aryl group; An alkyl group; Alkenyl groups; Alkynyl group; Aryl group; Or a heterocyclic group,
n1 is an integer of 0 to 6, and when n1 is 2 or more, a plurality of-(L1-Y1) are the same as or different from each other,
n2 is an integer of 0 to 4, when n2 is 2 or more, a plurality of-(L2-Y2) are the same as or different from each other,
The sum of n1 and n2 is 1 or more,
a is an integer of 0 to 6, and when a is 2 or more, a plurality of R1 are the same as or different from each other,
b is an integer of 0-4, and when b is two or more, some R <2> is the same or different from each other. The compound according to claim 1, wherein Formula 1 is represented by any one of Formulas 2-1 to 2-6:
[Formula 2-1]

[Formula 2-2]

[Formula 2-3]

[Formula 2-4]

[Formula 2-5]

[Formula 2-6]

In Chemical Formulas 2-1 to 2-6,
Definitions of L1, Y1, R1, R2, Rx, Ry, Rz and b are the same as defined in the formula (1),
a is an integer of 0 to 5, and when a is 2 or more, R1 is the same as or different from each other. The compound according to claim 1, wherein Formula 1 is represented by any one of Formulas 2-7 to 2-10:
[Formula 2-7]

[Formula 2-8]

[Formula 2-9]

[Formula 2-10]

In Chemical Formulas 2-7 to 2-10,
The definitions of L2, Y2, R1, R2, Rx, Ry, Rz and a are the same as those defined in Chemical Formula 1,
b is an integer of 0 to 3, and when b is 2 or more, R2 is the same or different from each other. The compound of claim 1, wherein Formula 1 is represented by Formula 3:
[Formula 3]

In Chemical Formula 3,
The definitions of Y1, Y2, R1, R2, Rx, Ry, Rz, a, b, n1 and n2 are the same as defined in the formula (1),
m1 and m2 are each independently an integer of 1 to 10. The compound of claim 1, wherein L 1 and L 2 are each methylene. The method according to claim 1, Y1 and Y2 are the same or different from each other, each independently represent a cycloalkyl group having 3 to 8 carbon atoms; Heterocyclic ketone groups having 2 to 12 carbon atoms; Carbocyclic ketone groups having 4 to 14 carbon atoms; Monocyclic or polycyclic aliphatic hydrocarbon ring groups having 3 to 15 carbon atoms; Monocyclic or polycyclic aryl group having 6 to 25 carbon atoms; Monocyclic or polycyclic aliphatic heterocyclic groups having 2 to 20 carbon atoms; Or a monocyclic or polycyclic aromatic heterocyclic group having 2 to 20 carbon atoms. The compound of claim 1, wherein the compound represented by Formula 1 is any one selected from the following compounds:

. An organic light emitting device comprising a first electrode, a second electrode and at least one organic material layer provided between the first electrode and the second electrode, wherein the compound according to any one of claims 1 to 7 Organic light-emitting device that is contained in one or more layers of the organic material layer. The organic light-emitting device as claimed in claim 8, wherein the compound represented by Chemical Formula 1 is included in one or more layers of one or more emission layers. The organic light emitting device of claim 9, wherein the light emitting layer including the compound represented by Chemical Formula 1 is a red light emitting layer. The organic light-emitting device of claim 8, wherein the compound represented by Chemical Formula 1 is included in at least one of a hole injection layer, a hole transport layer, a hole injection and transport layer, and a hole control layer. The organic light emitting device of claim 8, wherein the compound represented by Chemical Formula 1 is included in at least one of an electron injection layer, an electron transport layer, a layer for simultaneously injecting and transporting electrons, and an electron control layer.

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