KR101366492B1 - Novel compound and organic electroluminescent device comprising the same - Google Patents

Abstract

The present invention relates to a novel acridine-based compound having excellent hole injection and transport ability, light emitting ability, and the like and an organic electroluminescent device having improved characteristics such as luminous efficiency, driving voltage, and lifetime by including the same in at least one organic material layer.

Description

TECHNICAL FIELD [0001] The present invention relates to a novel compound and an organic electroluminescent device including the same.

The present invention relates to a novel compound and an organic electroluminescent device comprising the same, and more specifically, a novel acridine-based compound having excellent hole injection ability, hole transport ability, light emission ability, and the like, and including the compound as a material of an organic material layer to emit light The present invention relates to an organic EL device having improved characteristics such as efficiency, driving voltage, and lifetime.

A study on organic electroluminescent (EL) devices (hereinafter simply referred to as 'organic EL devices') led to blue electroluminescence using anthracene single crystals in 1965, starting from the observation of organic thin film emission of Bernanose in the 1950s In 1987, a layered organic EL device was proposed by Tang divided into a hole layer and a functional layer of a light emitting layer. Thereafter, in order to improve the efficiency and lifetime of the organic EL device, the organic EL device has been developed to introduce a characteristic organic material layer in the device, and the development of specialized materials used thereon has been continued.

In the organic electroluminescent device, when a voltage is applied between two electrodes, holes are injected into the organic layer and holes are injected into the organic layer, respectively. When the injected holes and electrons meet, an exciton is formed. When the exciton falls to the ground state, light is emitted. A material used as an organic material layer may be classified into a light emitting material, a hole injecting material, a hole transporting material, an electron transporting material, and an electron injecting material depending on its function.

The luminescent material may be classified into blue, green, and red luminescent materials depending on the luminescent color. In addition, it can be classified into yellow and orange light emitting materials necessary for realizing a better color. Further, in order to increase the color purity and increase the luminous efficiency through energy transfer, a host / dopant system can be used as a light emitting material. The dopant material can be divided into a fluorescent dopant using an organic material and a phosphorescent dopant using a metal complex compound containing heavy atoms such as Ir and Pt. The development of phosphorescent materials can theoretically improve luminescence efficiency up to four times that of fluorescence, so attention is focused on phosphorescent host materials as well as phosphorescent dopants.

Up to now, hole injecting layer, hole transporting layer. NPB, BCP, Alq ₃ and the like represented by the following chemical formulas are widely known as materials used as a hole blocking layer and an electron transporting layer, and anthracene derivatives as a luminescent material have been reported as a fluorescent dopant / host material. Particularly, as a phosphorescent material having a great advantage in improving the efficiency of a light emitting material, there are metal complex compounds including Ir such as Firpic, Ir (ppy) ₃ , (acac) Ir (btp) ₂ , , And is used as a red dopant material. So far, CBP has shown excellent properties as a phosphorescent host material.

However, conventional luminescent materials are good in terms of luminescence characteristics, but have low thermal stability due to their low glass transition temperature, and thus are not satisfactory in terms of lifetime in organic EL devices. Therefore, development of a luminescent material having excellent performance is required.

United States Patent Application Publication No. 2010/0019658

An object of the present invention is to provide a novel compound that can be used as a light emitting layer material, a hole transporting layer material, a hole injection layer material having excellent hole injection ability, hole transporting ability, light emitting ability and the like.

Another object of the present invention is to provide an organic electroluminescent device including the novel compound having a low driving voltage, high luminous efficiency, and an improved lifetime.

In order to achieve the above object, the present invention provides a compound represented by the following general formula (1).

(In the formula 1,

X ₁ to X ₈ are each independently CR ₁₁ or N, wherein a plurality of CR ₁₁ are the same as or different from each other;

R ₁₁ is hydrogen, deuterium, halogen, cyano group, substituted or unsubstituted C ₁ to C ₄₀ alkyl group, substituted or unsubstituted C ₂ to C ₄₀ alkenyl group, substituted or unsubstituted C ₂ to C ₄₀ Alkynyl group, substituted or unsubstituted C ₃ to C ₄₀ cycloalkyl group, substituted or unsubstituted C ₃ to C ₄₀ heterocycloalkyl group, substituted or unsubstituted C ₆ to C ₆₀ aryl group, substituted or unsubstituted Heteroaryl group having 5 to 60 carbon atoms, substituted or unsubstituted C ₁ to C ₄₀ alkyloxy group, substituted or unsubstituted C ₆ to C ₆₀ aryloxy group, substituted or unsubstituted C ₁ to An alkylsilyl group of C ₄₀ , a substituted or unsubstituted C ₆ -C ₆₀ arylsilyl group, and a substituted or unsubstituted C ₆ -C ₆₀ arylamine group, wherein they are fused with adjacent groups Thereby forming or not forming an aromatic ring or heteroaromatic ring;

Provided that at least one of X ₁ to X ₈ forms a fused ring represented by Formula 2 with an adjacent group;

In Formula 2,

Y ₁ to Y ₄ are each independently CR ₁₂ or N, wherein a plurality of CR ₁₂ are the same as or different from each other;

R ₁₂ is hydrogen, deuterium, halogen, cyano group, substituted or unsubstituted C ₁ to C ₄₀ alkyl group, substituted or unsubstituted C ₂ to C ₄₀ alkenyl group, substituted or unsubstituted C ₂ to C ₄₀ Alkynyl group, substituted or unsubstituted C ₃ to C ₄₀ cycloalkyl group, substituted or unsubstituted C ₃ to C ₄₀ heterocycloalkyl group, substituted or unsubstituted C ₆ to C ₆₀ aryl group, substituted or unsubstituted Heteroaryl group having 5 to 60 carbon atoms, substituted or unsubstituted C ₁ to C ₄₀ alkyloxy group, substituted or unsubstituted C ₆ to C ₆₀ aryloxy group, substituted or unsubstituted C ₁ to An alkylsilyl group of C ₄₀ , a substituted or unsubstituted C ₆ -C ₆₀ arylsilyl group, and a substituted or unsubstituted C ₆ -C ₆₀ arylamine group, wherein they are fused with adjacent groups Thereby forming or not forming an aromatic ring or heteroaromatic ring;

Ar ₁ and Ar ₂ are each independently a substituted or unsubstituted C ₁ ~ C ₄₀ alkyl group, a substituted or unsubstituted C ₂ ~ C ₄₀ alkenyl group, a substituted or unsubstituted C ₂ ~ C ₄₀ alkynyl group, Substituted or unsubstituted C ₃ to C ₄₀ cycloalkyl group, substituted or unsubstituted C ₃ to C ₄₀ heterocycloalkyl group, substituted or unsubstituted C ₆ to C ₆₀ aryl group, substituted or unsubstituted nuclear atom A substituted or unsubstituted C ₁ -C ₄₀ alkyloxy group, a substituted or unsubstituted C ₆ -C ₆₀ aryloxy group, a substituted or unsubstituted C ₁ -C _{40 group} An alkylsilyl group, a substituted or unsubstituted C ₆ -C ₆₀ arylsilyl group, and a substituted or unsubstituted C ₆ -C ₆₀ arylamine group, wherein they form a fused ring with an adjacent group Or non-formal;

R ₂₁ and R ₂₂ are each independently hydrogen, a substituted or unsubstituted C ₁ to C ₄₀ alkyl group, a substituted or unsubstituted C ₆ to C ₆₀ aryl group, or a substituted or unsubstituted nuclear atom having 5 to 60 atoms. Heteroaryl groups are selected from the group consisting of;

The alkyl group, alkenyl group, alkynyl group, cycloalkyl group, heterocycloalkyl group, aryl group, heteroaryl group, alkyloxy group, aryloxy group, alkyl of R ₁₁ , R _12, R ₂₁ , R ₂₂ , Ar ₁ and Ar ₂ One or more substituents that can be introduced to each of the silyl, arylsilyl and arylamine groups are each independently deuterium, halogen, nitrile, nitro, cyano, C ₁ -C ₄₀ alkyl, C ₂ -C ₄₀ alkenes group, C ₁ ~ C ₄₀ alkoxy group, C ₁ ~ C ₄₀ of the amino group, C of ₃ ~ C ₄₀ cycloalkyl group, the number of nuclear atoms of 3 to 40 heterocycloalkyl group, C ₆ ~ C ₄₀ aryl group, a nuclear atom Heteroaryl group of 5 to 60, C ₁ ~ C ₄₀ alkyloxy group, C ₆ ~ C ₆₀ aryloxy group, C ₁ ~ C ₄₀ alkylsilyl group, C ₆ ~ C ₆₀ arylsilyl group, C ₁ ~ C ₄₀ group of an alkyl boron, C ₆ ~ C group ₆₀ arylboronic of, C ₆ ~ C ₆₀ aryl phosphine group, C ₆ ~ C ₆₀ aryl phosphine oxide group, and a C ₆ ~ arylamine group of C ₆₀ of In the county And a plurality of substituents may be the same or different from each other.

In addition, the present invention is an organic electroluminescent device comprising an anode, a cathode, and at least one organic layer interposed between the anode and the cathode, wherein at least one of the at least one organic layer comprises the compound. Provided is an organic electroluminescent device.

At least one organic material layer including the compound is selected from the group consisting of a hole transporting layer, a hole injection layer and a light emitting layer, preferably a hole transporting layer and / or a light emitting layer, more preferably a light emitting layer. In particular, when the compound is included in the light emitting layer, the compound is used as a phosphorescent host material.

Since the compound according to the present invention is excellent in heat resistance, hole injecting ability, hole transporting ability, and light emitting ability, it can be used as an organic material layer of an organic electroluminescent device, preferably as a hole injecting layer material, a hole transporting layer material, .

In addition, the organic EL device including the compound according to the present invention in the hole injection layer, the hole transport layer, and / or the light emitting layer may greatly improve aspects such as light emission performance, driving voltage, lifespan, efficiency, and the like. Can be applied effectively.

Hereinafter, the present invention will be described.

The novel compound according to the present invention is an acridine-based compound in which an indole derivative moiety is fused to an acridine moiety to form a basic skeleton, and various substituents are bonded to the basic skeleton. It is characterized by being displayed as 1. The compound represented by the formula (1) has a higher molecular weight than the conventional organic EL device material (for example, 4,4-dicarbazolybiphenyl (hereinafter referred to as 'CBP')) has a high thermal stability, hole injection ability, hole number It is excellent in the ability to transmit power and light emission. Therefore, when the organic electroluminescent device includes the compound of Formula 1, the driving voltage, efficiency, lifespan, etc. of the device may be improved.

The compound represented by Formula 1 has various substituents such as alkyl group, aryl group, heteroaryl group, etc., connected to indoloacridine base skeleton formed by fusion (condensation) of acridine-based moiety and indole derivative moiety. And by condensation of an aromatic ring or a heteroaromatic ring, preferably a heretoaromatic ring, the energy level can be controlled to have a wide bandgap (sky blue to red). Such a compound can improve the phosphorescence property of the device, and can also improve the hole injection / transport capacity, the luminous efficiency, the driving voltage, the lifespan characteristics, and the like, and also improve the electron transport ability and the like depending on the type of substituents to be introduced. . Therefore, the compound of Formula 1 may be used as an organic material layer material, preferably a light emitting layer material (phosphorescent host material), a hole transport layer material and a hole injection layer material, more preferably a light emitting layer material of the organic electroluminescent device. In addition, the compound of Formula 1 may optionally be used as an electron transporting layer material by introducing an appropriate substituent. In particular, the compound of Formula 1 has a wide bandgap due to the indolo acridine-based skeleton, and can improve the binding force between the hole and the electron, it has excellent properties as a light emitting layer material, especially a phosphorescent host material compared to the conventional CBP Can be exercised.

In addition, the compound represented by the formula (1) is introduced into a variety of substituents, especially aryl groups and / or heteroaryl groups in the indolo acridine-based skeleton significantly increases the molecular weight of the compound, thereby improving the glass transition temperature, thereby It may have a higher thermal stability than conventional CBP. Therefore, the organic electroluminescent device including the compound represented by Chemical Formula 1 of the present invention may greatly improve durability and lifespan characteristics.

In addition, when the compound represented by Chemical Formula 1 is adopted as a hole injection / transport layer, a blue, green and / or red phosphorescent host material of an organic EL device, it may exhibit an excellent effect in terms of efficiency and lifetime compared to conventional CBP. have. Therefore, the compound according to the present invention can greatly contribute to improvement of the performance and lifetime of the organic electroluminescent device, and further, the lifetime of the organic electroluminescent device can maximize the performance of the full-color organic electroluminescent panel.

In the compound represented by Formula 1 according to the present invention, X ₁ to X ₈ are each independently CR ₁₁ or nitrogen (N), wherein a plurality of CR ₁₁ may be the same or different from each other.

R ₁₁ is hydrogen, halogen, cyano, substituted or unsubstituted C ₁ to C ₄₀ alkyl group, substituted or unsubstituted C ₆ to C ₆₀ aryl group, substituted or unsubstituted nuclear atom having 5 to 60 atoms It is preferably selected from the group consisting of a heteroaryl group and a substituted or unsubstituted C ₆ ~ C ₆₀ arylamine group.

At this time, the alkyl group, aryl group, heteroaryl group and arylamine group of R ₁₁ are each independently deuterium, halogen, C ₁ ~ C ₄₀ alkyl group, C ₃ ~ C ₄₀ cycloalkyl group, heteroatoms of 3 to 40 hetero atoms Cycloalkyl group, C ₆ ~ C ₆₀ aryl group, C ₅ ~ C ₆₀ heteroaryl group, C ₁ ~ C ₄₀ Alkyloxy group, C ₆ ~ C ₆₀ Aryloxy group, C ₁ ~ C ₄₀ Alkyl Silyl group, C ₆ ~ C ₆₀ arylsilyl group, C ₁ ~ C ₄₀ alkyl boron group, C ₆ ~ C ₆₀ aryl boron group, C ₆ ~ C ₆₀ arylphosphine group, C ₆ ~ C ₆₀ aryl It may be substituted with one or more substituents selected from the group consisting of a phosphine oxide group and a C ₆ ~ C ₆₀ arylamine group, a plurality of substituents may be the same or different from each other.

However, in the compound of Formula 1, at least one of X ₁ to X ₈ , preferably at least one of X ₅ to X ₈ forms a condensed ring represented by Formula 2 with an adjacent group.

In the condensed ring represented by Formula 2, Y ₁ to Y ₄ are each independently CR ₁₂ or nitrogen (N), and a plurality of CR ₁₂ may be the same or different from each other.

R ₁₂ is hydrogen, halogen, cyano, substituted or unsubstituted C ₁ to C ₄₀ alkyl group, substituted or unsubstituted C ₆ to C ₆₀ aryl group, substituted or unsubstituted nuclear atom having 5 to 60 atoms It is preferably selected from the group consisting of a heteroaryl group and a substituted or unsubstituted C ₆ ~ C ₆₀ arylamine group.

At this time, the alkyl group, aryl group, heteroaryl group and arylamine group of R ₁₂ are each independently deuterium, halogen, C ₁ ~ C ₄₀ alkyl group, C ₃ ~ C ₄₀ cycloalkyl group, heteronuclear atoms of 3 to 40 Cycloalkyl group, C ₆ ~ C ₆₀ aryl group, C ₅ ~ C ₆₀ heteroaryl group, C ₁ ~ C ₄₀ Alkyloxy group, C ₆ ~ C ₆₀ Aryloxy group, C ₁ ~ C ₄₀ Alkyl Silyl group, C ₆ ~ C ₆₀ arylsilyl group, C ₁ ~ C ₄₀ alkyl boron group, C ₆ ~ C ₆₀ aryl boron group, C ₆ ~ C ₆₀ arylphosphine group, C ₆ ~ C ₆₀ aryl It may be substituted with one or more substituents selected from the group consisting of a phosphine oxide group and a C ₆ ~ C ₆₀ arylamine group, a plurality of substituents may be the same or different from each other.

Preferably, in the compound of the present invention, at least one of X ₁ to X ₈ , and Y ₁ to Y ₄ may be N. When at least one of X ₁ to X ₈ and Y ₁ to Y ₄ is N, the driving voltage of the device is lowered due to a double bond of C and N.

In addition, in the compound represented by Formula 1, Ar ₁ and Ar ₂ are each independently substituted or unsubstituted C ₆ ~ C ₆₀ aryl group, substituted or unsubstituted heteroaryl group having 5 to 60 nuclear atoms When selected from the group, it may have a wider bandgap, it is also preferable because the glass transition temperature can be further improved and the thermal stability is further improved.

The Ar aryl groups ₁ and Ar _2, and heteroaryl groups each independently selected from deuterium, halogen, cyano, C ₁ ~ C ₄₀ alkyl group, C ₃ ~ C ₄₀ cycloalkyl group, a number of nuclear atoms of 3 to 40 heterocycloalkyl group of , C ₆ ~ C ₆₀ aryl group, nuclear atom 5 ~ 60 heteroaryl group, C ₁ ~ C ₄₀ alkyloxy group, C ₆ ~ C ₆₀ aryloxy group, C ₁ ~ C ₄₀ alkylsilyl group , C ₆ ~ C ₆₀ arylsilyl group, C ₁ ~ C ₄₀ alkyl boron group, C ₆ ~ C ₆₀ aryl boron group, C ₆ ~ C ₆₀ aryl phosphine group, C ₆ ~ C ₆₀ aryl phosphine It may be substituted with one or more substituents selected from the group consisting of an oxide group and a C ₆ ~ C ₆₀ arylamine group. Here, the plurality of substituents may be the same or different from each other.

For example, in Ar ₁ and Ar ₂ of the present invention, the aryl group or heteroaryl group is phenyl, naphthyl, indene, anthracene, phenanthrene, pyrene, triphenylene, pyridine, pyrimidine, pyrazine, triazine, quinoline , Isoquinoline, quinoxaline, fluorene, carbazole, dibenzothiophene, dibenzofuran, acridine, indole, benzofuran, benzothiophene, benzimidazole, benzothiazole, purine and the like.

In addition, the R ₂₁ and R ₂₂ are each independently hydrogen, halogen, cyano, alkyl group of C ₁ ~ C ₄₀ , C ₆ ~ C ₆₀ aryl group, heteroaryl group of 5 to 60 nuclear atoms, C ₆ ~ It is preferably selected from the group consisting of C ₆₀ arylamine groups.

At this time, the alkyl group, aryl group, heteroaryl group, arylamine group of R ₂₁ and R ₂₂ are each independently deuterium, halogen, C ₁ ~ C ₄₀ alkyl group, C ₃ ~ C ₄₀ cycloalkyl group, C ₃ ~ C ₄₀ Heterocycloalkyl group, C ₆ ~ C ₆₀ aryl group, heteroaryl group having 5 to 60 nuclear atoms, C ₁ ~ C ₄₀ alkyloxy group, C ₆ ~ C ₆₀ aryloxy group, C ₁ ~ C ₄₀ Alkyl silyl group, C ₆ ~ C ₆₀ aryl silyl group, C ₁ ~ C ₄₀ alkyl boron group, C ₆ ~ C ₆₀ aryl boron group, C ₆ ~ C ₆₀ aryl phosphine group, C ₆ ~ C ₆₀ It may be substituted with one or more substituents selected from the group consisting of an aryl phosphine oxide group and a C ₆ ~ C ₆₀ arylamine group, a plurality of substituents may be the same or different from each other.

More preferably, R ₂₁ and R ₂₂ may each independently be methyl or phenyl.

In the compound of Formula 1 according to the present invention, R ₁₁ , R _12, Ar ₁ and Ar ₂ may be each independently selected from the group consisting of hydrogen and the following substituents S1 to S166, but is not limited thereto.

Examples of the compound represented by Formula 1 according to the present invention include a compound represented by Formula 3, a compound represented by Formula 4, and the like, but is not limited thereto.

In the above formulas (3) and (4)

X ₁ to X ₅ , and X ₈ are each independently CR ₁₁ or N, wherein a plurality of CR ₁₁ are the same as or different from each other;

Y ₁ to Y ₄ are each independently CR ₁₂ or N, wherein a plurality of CR ₁₂ are the same as or different from each other;

Provided that at least one of X ₁ to X ₅ , X ₈ and Y ₁ to Y ₄ is N;

R ₁₁ , R ₁₂ , R ₂₁ , R ₂₂ , Ar ₁ and Ar ₂ are the same as defined in Chemical Formula 1, respectively.

In addition, examples of the compound represented by Formula 1 according to the present invention include a compound represented by the following formula (5) to a compound represented by the formula (8), but is not limited thereto.

In the above formulas 5 to 8,

X ₁ to X _8, Y ₁ to Y ₄ , R ₂₁ , R ₂₂ , Ar ₁ , and Ar ₂ are the same as defined in Formula 1, respectively.

Specific examples of the compound represented by Chemical Formula 1 include those exemplified below, but are not limited thereto. In the structural formula of the following compound, Ar ₁ And Ar ₂ are each independently the same as defined in Formula 1.

As used herein, "unsubstituted alkyl" means a monovalent functional group obtained by removing a hydrogen atom from a linear or branched saturated hydrocarbon having 1 to 40 carbon atoms, and examples thereof include methyl, ethyl, propyl, iso Butyl, sec-butyl, pentyl, iso-amyl, hexyl, and the like.

In the present invention, "unsubstituted alkenyl" means a monovalent functional group obtained by removing a hydrogen atom from a linear or branched unsaturated hydrocarbon having 2 to 40 carbon atoms and having at least one carbon-carbon double bond. do. Examples thereof include, but are not limited to, vinyl, allyl, isopropenyl, 2-butenyl, and the like.

In the present invention, "unsubstituted alkynyl" means a monovalent functional group obtained by removing a hydrogen atom from a straight-chain or branched-chain unsaturated hydrocarbon having 2 to 40 carbon atoms and having at least one carbon-carbon triple bond do. Examples thereof include, but are not limited to, ethynyl, 2-propynyl, and the like.

In the present invention, "unsubstituted cycloalkyl" means a monovalent functional group obtained by removing a hydrogen atom from a monocyclic or polycyclic non-aromatic hydrocarbon (saturated cyclic hydrocarbon) having 3 to 40 carbon atoms. Examples of such cycloalkyls include, but are not limited to, cyclopropyl, cyclopentyl, cyclohexyl, norbornyl, adamantine, and the like.

In the present invention, "unsubstituted heterocycloalkyl" means a monovalent functional group obtained by removing a hydrogen atom from a non-aromatic hydrocarbon (saturated cyclic hydrocarbon) having 3 to 40 nuclear atoms, wherein at least one of the rings Carbon, preferably 1 to 3 carbons, is substituted with a heteroatom such as N, O or S. Non-limiting examples thereof include morpholine, piperazine, and the like.

In the present invention, "unsubstituted aryl" means a monovalent functional group obtained by removing a hydrogen atom from an aromatic hydrocarbon having 6 to 60 carbon atoms in which a single ring or two or more rings are combined. In this case, the two or more rings may be attached to each other in a simple or fused form. Non-limiting examples thereof include phenyl, biphenyl, terphenyl, naphthyl, phenanthryl, anthryl, and the like.

In the present invention, "unsubstituted heteroaryl" is a monovalent functional group obtained by removing a hydrogen atom from a monoheterocyclic or polyheterocyclic aromatic hydrocarbon having 5 to 60 nuclear atoms, and preferably at least one carbon in the ring, preferably Preferably 1 to 3 carbons are substituted with heteroatoms such as nitrogen (N), oxygen (O), sulfur (S) or selenium (Se). In this case, heteroaryl may be attached in a form in which two or more rings are simply attached or fused to each other, and also include a condensed form with an aryl group. Non-limiting examples of such heteroaryl include 6-membered monocyclic rings such as pyridyl, pyrazinyl, pyrimidinyl, pyridazinyl, triazinyl; Such as phenoxathienyl, indolizinyl, indolyl, purinyl, quinolyl, benzothiazole, carbazolyl, and the like. Includes rings and is also meant to include 2-furanyl, N-imidazolyl, 2-isoxazolyl, 2-pyridinyl, 2-pyrimidinyl and the like.

In the present invention, "unsubstituted alkyloxy" means a monovalent functional group represented by RO-, wherein R is an alkyl having 1 to 40 carbon atoms, which may be linear, branched or cyclic cyclic structure. Examples of such alkyloxy include, but are not limited to, methoxy, ethoxy, n-propoxy, 1-propoxy, t-butoxy, n-butoxy, pentoxy and the like.

In the present invention, "unsubstituted aryloxy" means a monovalent functional group represented by R'O-, wherein R 'is aryl having 6 to 60 carbon atoms. Non-limiting examples of aryloxy include phenyloxy, naphthyloxy, diphenyloxy and the like.

In the present invention, "unsubstituted alkylsilyl" means silyl substituted with alkyl having 1 to 40 carbon atoms, "unsubstituted arylsilyl" means silyl substituted with aryl having 6 to 60 carbon atoms, and " Unsubstituted arylamine "means an amine substituted with aryl having 6 to 60 carbon atoms.

In the present invention, "fused ring" means a condensed aliphatic ring, a condensed aromatic ring, a condensed heteroaliphatic ring, a condensed heteroaromatic ring or a combination thereof.

The compound represented by Chemical Formula 1 according to the present invention may be synthesized according to a general synthetic method [ Chem. Rev. , 60 : 313 (1960); J. Chem. SOC . 4482 (1955); Chem. Rev. 95: 2457 (1995)). Detailed synthesis of the compound of the present invention will be described in detail in Synthesis Examples to be described later.

On the other hand, the present invention provides an organic electroluminescent device comprising a compound represented by the formula (1) (preferably a compound represented by any one of formulas 3 to 8).

Specifically, the organic electroluminescent device according to the present invention includes an anode, a cathode, and at least one organic material layer interposed between the anode and the cathode, and at least one of the at least one organic material layer. Is characterized in that it comprises at least one compound represented by Formula 1 (preferably a compound represented by any one of Formulas 3 to 8).

The at least one organic material layer may include a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, and an electron injection layer. Preferably, at least one organic material layer including the compound of Formula 1 may be a hole transport layer, a hole injection layer or a light emitting layer, more preferably a light emitting layer or a hole transport layer, even more preferably a light emitting layer.

For example, the light emitting layer of the organic electroluminescent device according to the present invention includes a host material and / or a dopant material. In this case, the compound represented by Chemical Formula 1 (preferably, the compound represented by any one of Chemical Formulas 3 to 8) may be used as a phosphorescent host material, a fluorescent host, or a dopant material thereof. Preferably, the compound represented by Formula 1 may be included in the organic light emitting device as a blue, green and / or red phosphorescent host, a fluorescent host, or a dopant material. In this case, the luminous efficiency, luminance, power efficiency, thermal stability and lifespan of the device may be improved due to the compound.

The structure of the organic electroluminescent device according to the present invention is not particularly limited and may be a structure in which a substrate, an anode, a hole injecting layer, a hole transporting layer, a light emitting layer, an electron transporting layer, and a cathode are sequentially laminated. Optionally, an electron injection layer may be further stacked on the electron transport layer. In addition, the organic electroluminescent device according to the present invention may have a structure in which an anode, one or more organic layers and an anode are sequentially stacked, and an insulating layer or an adhesive layer is interposed between the electrodes and the organic layer.

The organic electroluminescent device according to the present invention is not limited to the organic electroluminescent device according to the present invention, except that at least one of the organic layers (for example, a light emitting layer, a hole transporting layer and / or an electron transporting layer) Can be produced by forming other organic layers and electrodes using known materials and methods.

The organic material layer may be formed by a vacuum deposition method or a solution coating method. Examples of the solution coating method include, but are not limited to, spin coating, dip coating, doctor blading, inkjet printing, or thermal transfer.

As the substrate usable in the present invention, a silicon wafer, a quartz or glass plate, a metal plate, a plastic film or sheet, etc. may be used, but is not limited thereto.

Examples of the positive electrode material 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), and indium zinc oxide (IZO); ZnO: Al or SnO _2: a combination of a metal and an oxide such as Sb; Conductive polymers such as polythiophene, poly (3-methylthiophene), poly [3,4- (ethylene-1,2-dioxy) thiophene] (PEDT), polypyrrole and polyaniline; Or carbon black, but is not limited thereto.

The negative electrode material may be a metal such as magnesium, calcium, sodium, potassium, titanium, indium, yttrium, lithium, gadolinium, aluminum, silver, tin or lead or an alloy thereof; Layer structure materials such as LiF / Al or LiO ₂ / Al, but are not limited thereto.

The hole injecting layer, the hole transporting layer, the electron injecting layer and the electron transporting layer are not particularly limited, and conventional materials known in the art can be used.

Hereinafter, the present invention will be described in detail with reference to the following examples. However, the following examples are illustrative of the present invention, and the present invention is not limited by the following examples.

Preparation Example 1 Synthesis of Compound IMC-1

Step 1 Synthesis of 9,9-dimethyl-2- (2-nitrophenyl) -10-phenyl-9,10-dihydroacridine

18.21 g (50.0 mmol) of 2-bromo-9,9-dimethyl-10-phenyl-9,10-dihydroacridine, 9.18 g (55.0 mmol) of 2-nitrophenylboronic acid, 6.00 g (150.0 mmol) of NaOH under a nitrogen stream And 200 ml / 100 ml of THF / H ₂ O were added and stirred to obtain a reaction mixture. Then, 2.90 g (5 mol%) of Pd (PPh ₃ ) ₄ was added at 40 ° C., and stirred at 80 ° C. for 12 hours. After completion of the reaction, the reaction mixture was extracted with methylene chloride and then filtered with MgSO ₄ . Thereafter, the solvent was removed from the filtered organic layer, and then 16.67 g (yield: 82%) of 9,9-dimethyl-2- (2-nitrophenyl) -10-phenyl-9,10-dihydroacridine was obtained using column chromatography. .

¹ H-NMR: δ 1.75 (s, 6H), 6.68 (m, 6H), 7.00 (m, 2H), 7.24 (m, 3H), 7.66 (m, 2H), 8.01 (m, 3H)

≪ Step 2 > IMC Synthesis of -1

Under nitrogen stream, 7.76 g (19.10 mmol) of 9,9-dimethyl-2- (2-nitrophenyl) -10-phenyl-9,10-dihydroacridine obtained in <Step 1 of Preparation Example 1> 12.52 g (47.72 mmol) of triphenylphosphine , And 50 ml of 1,2-dichlorobenzene were mixed and then stirred for 12 hours. After completion of the reaction, 1,2-dichlorobenzene was removed and extraction was performed with dichloromethane to obtain an organic layer. Thereafter, water was removed from the organic layer extracted with MgSO _4, and then 2.86 g (yield: 40%) of Compound IMC-1 was obtained using column chromatography.

¹ H-NMR: δ 1.75 (s, 6H), 6.69 (m, 6H), 7.01 (m, 2H), 7.26 (m, 3H), 7.68 (m, 3H), 8.12 (d, 1H), 10.44 ( s, 1 H)

Preparation Example 2 Synthesis of Compound IMC-2 and Compound IMC-3

Step 1 Synthesis of 9,9-dimethyl-2- (3-nitropyridin-2-yl) -10-phenyl-9,10-dihydroacridine

Perform the same procedure as in <Step 1> of Preparation Example 1, except that 25.19 g (150 mmol) of 3-nitropyridin-2-ylboronic acid was used instead of 2-nitrophenylboronic acid used in <Step 1> of Preparation Example 1. To 9,9-dimethyl-2- (3-nitropyridin-2-yl) -10-phenyl-9,10-dihydroacridine.

¹ H-NMR: δ 1.75 (s, 6H), 6.66 (m, 6H), 7.03 (m, 2H), 7.24 (m, 3H), 7.87 (d, 1H), 8.19 (m, 2H), 8.89 ( d, 1H)

&Lt; Step 2 > IMC -2 and compound IMC Synthesis of -3

9,9-dimethyl obtained in <Step 1> of Preparation Example 2 instead of 9,9-dimethyl-2- (2-nitrophenyl) -10-phenyl-9,10-dihydroacridine used in <Step 2> of Preparation Example 1 Compound was prepared in the same manner as in <Step 2> of Preparation Example 1, except that 7.78 g (19.10 mmol) of 2- (3-nitropyridin-2-yl) -10-phenyl-9,10-dihydroacridine was used. IMC-2 and compound IMC-3 were obtained.

¹ H-NMR of IMC-2: δ 1.75 (s, 6H), 6.68 (m, 6H), 7.02 (m, 2H), 7.23 (m, 3H), 7.80 (m, 2H), 8.44 (d, 1H ), 10.42 (s, 1 H)

¹ H-NMR of IMC-3: δ 1.75 (s, 6H), 6.67 (m, 6H), 7.02 (m, 2H), 7.23 (m, 3H), 7.84 (m, 2H), 8.45 (d, 1H ), 10.41 (s, 1 H)

Preparation Example 3 Synthesis of Compound IMC-4

Step 1 Synthesis of 9,9-dimethyl-3- (2-nitrophenyl) -10-phenyl-9,10-dihydroacridine

3-bromo-9,9-dimethyl-10-phenyl-9,10-dihydroacridine instead of 2-bromo-9,9-dimethyl-10-phenyl-9,10-dihydroacridine used in <Step 1> of Preparation Example 1 9,9-dimethyl-3- (2-nitrophenyl) -10-phenyl-9,10-dihydroacridine in the same manner as in <Step 1> of Preparation Example 1, except that 18.21 g (50.0 mmol) was used. Got.

¹ H-NMR: δ 1.75 (s, 6H), 6.68 (m, 7H), 7.01 (m, 2H), 7.22 (m, 3H), 7.64 (t, 1H), 7.99 (m, 3H)

&Lt; Step 2 > IMC Synthesis of -4

9,9-dimethyl obtained in <Step 1> of Preparation Example 3 instead of 9,9-dimethyl-2- (2-nitrophenyl) -10-phenyl-9,10-dihydroacridine used in <Step 2> of Preparation Example 1 Compound IMC-4 was carried out in the same manner as in <Step 2> of Preparation Example 1, except that 15.48 g (38.0 mmol) of -3- (2-nitrophenyl) -10-phenyl-9,10-dihydroacridine was used. Got it.

¹ H-NMR of IMC-4: δ 1.75 (s, 6H), 6.69 (m, 5H), 7.01 (m, 2H), 7.23 (m, 4H), 7.54 (m, 3H), 8.12 (d, 1H ), 10.44 (s, 1 H)

Preparation Example 4 Synthesis of Compound IMC-5

Step 1 Synthesis of 9,9-dimethyl-3- (3-nitropyridin-2-yl) -10-phenyl-9,10-dihydroacridine

3-bromo-9,9-dimethyl-10-phenyl-9,10-dihydroacridine instead of 2-bromo-9,9-dimethyl-10-phenyl-9,10-dihydroacridine used in <Step 1> of Preparation Example 1 18.21 g (50.0 mmol) is used, Except for using 9.24 g (55.0 mmol) of 3-nitropyridin-2-ylboronic acid instead of 2-nitrophenylboronic acid, 9,9-dimethyl-3- (3 -nitropyridin-2-yl) -10-phenyl-9,10-dihydroacridine was obtained.

¹ H-NMR: δ 1.75 (s, 6H), 6.68 (m, 5H), 7.01 (m, 2H), 7.24 (m, 5H), 7.58 (d, 1H), 8.32 (d, 1H), 8.89 ( d, 1H)

&Lt; Step 2 > IMC Synthesis of -5

9,9-dimethyl obtained in <Step 1> of Preparation Example 4 instead of 9,9-dimethyl-2- (2-nitrophenyl) -10-phenyl-9,10-dihydroacridine used in <Step 2> of Preparation Example 1 Compound was prepared in the same manner as in <Step 2> of Preparation Example 1, except that 15.69 g (38.5 mmol) of -3- (3-nitropyridin-2-yl) -10-phenyl-9,10-dihydroacridine was used. IMC-5 was obtained.

¹ H-NMR of IMC-5: δ 1.75 (s, 6H), 6.68 (m, 5H), 7.01 (m, 2H), 7.23 (m, 5H), 7.98 (d, 1H), 8.43 (d, 1H ), 10.42 (s, 1 H)

Preparation Example 5 Synthesis of Compound IMC-6

Step 1 Synthesis of 2- (3-nitropyridin-2-yl) -9,9,10-triphenyl-9,10-dihydroacridine

24.42 g of 2-bromo-9,9,10-triphenyl-9,10-dihydroacridine instead of 2-bromo-9,9-dimethyl-10-phenyl-9,10-dihydroacridine used in <Step 1> of Preparation Example 1 Except for using (50.0 mmol), 2- (3-nitropyridin-2-yl) -9,9,10-triphenyl-9,10-dihydroacridine in the same manner as in <Step 1> of Preparation Example 1 Got.

¹ H-NMR: δ 1.75 (s, 6H), 6.68 (m, 11H), 7.01 (m, 2H), 7.24 (m, 9H), 7.58 (d, 1H), 8.27 (d, 1H), 8.89 ( d, 1H)

&Lt; Step 2 > IMC Synthesis of -6

2- (3-) obtained in <Step 1> of Preparation Example 5 instead of 9,9-dimethyl-2- (2-nitrophenyl) -10-phenyl-9,10-dihydroacridine used in <Step 2> of Preparation Example 1 Compound IMC- was prepared in the same manner as in <Step 2> of Preparation Example 1, except that 17.54 g (33.0 mmol) of nitropyridin-2-yl) -9,9,10-triphenyl-9,10-dihydroacridine was used. 6 was obtained.

¹ H-NMR of IMC-6: δ 1.75 (s, 6H), 6.68 (m, 11H), 7.01 (m, 2H), 7.23 (m, 9H), 7.98 (d, 1H), 8.38 (d, 1H ), 10.43 (s, 1 H)

[ Synthetic example  One] AC Synthesis of -1

Compound IMC-1 (4.98 g, 13.29 mmol) synthesized in Preparation Example 1, under nitrogen stream, 3,3 '-(5-bromo-1,3-phenylene) dipyridine (8.27 g, 26.57 mmol) and Cu powder 0.17 g, 2.66 mmol), K ₂ CO ₃ (3.66 g, 26.57 mmol), Na ₂ SO ₄ (3.78 g, 26.57 mmol) and nitrobenzene (100 ml) were mixed and stirred at 190 ° C. for 12 h.

After the reaction was completed, nitrobenzene was removed, the organic layer was separated with methylene chloride, and water was removed from the organic layer using MgSO ₄ . The solvent was removed from the organic layer, and then purified by column chromatography to obtain the compound AC-1 (5.06 g, yield: 63%).

Exact Mass: 604 g / mol

Elemental Analysis: C, 85.40; H, 5. 33; N, 9.26

Synthesis Example 2 Synthesis of Compound AC-2

Synthesis Example 1 except that 6.24 g (20.12 mmol) of 2-bromo-4,6-diphenylpyridine was used instead of 3,3 '-(5-bromo-1,3-phenylene) dipyridine used in Synthesis Example 1. Compound AC-2 (4.78 g, yield: 59%) was obtained in the same manner as the same.

Exact Mass: 603 g / mol

Elemental Analysis: C, 87.53; H, 5.51; N, 6.96

Synthesis Example 3 Synthesis of Compound AC-3

Compound IMC-1 (2.19 g, 5.85 mmol), synthesized in Preparation Example 1 under nitrogen stream, 2-chloro-4,6-diphenylpyrimidine (2.09 g, 7.85 mmol), NaH (2.11 g, 8.78 mmol) and DMF ( 80 ml) and then stirred at room temperature for 3 hours. After the reaction was terminated, water was added, the solid compound was filtered and purified by column chromatography to give the compound AC-3 (2.86 g, yield: 81%).

Exact Mass: 604 g / mol

Elemental Analysis: C, 85.40; H, 5. 33; N, 9.26

Synthesis Example 4 Synthesis of Compound AC-4

Synthesis Example 3 except that 1.49 g (8.37 mmol) of 2-chloro-4,6-diphenyl-1,3,5-triazine was used instead of 2-chloro-4,6-diphenylpyrimidine used in Synthesis Example 3. Compound AC-4 (3.01 g, yield: 89%) was obtained in the same manner as the same.

Exact Mass: 605 g / mol

Elemental Analysis: C, 83.28; H, 5. 16; N, 11.56

Synthesis Example 5 Synthesis of Compound AC-5

3.78 g (9.02 mmol) of 2,4-di (biphenyl-3-yl) -6-chloro-1,3,5-triazine instead of 2-chloro-4,6-diphenylpyrimidine used in Synthesis Example 3 Except for the same as in Synthesis Example 3, the compound AC-5 (2.73 g, yield: 75%) was obtained.

Exact Mass: 757 g / mol

Elemental Analysis: C, 85.57; H, 5.19; N, 9.24

[ Synthetic example  6] compound AC Synthesis of -6

Compound AC-6 (2.37 g) was prepared in the same manner as in Synthesis Example 1, except that 3.04 g (9.78 mmol) of Compound IMC-2 synthesized in Preparation Example 2 was used instead of Compound IMC-1 used in Synthesis Example 1. , Yield: 60%).

Exact Mass: 605 g / mol

Elemental Analysis: C, 83.28; H, 5. 16; N, 11.56

[ Synthetic example  7] compound AC Synthesis of -7

Instead of compound IMC-1 used in Synthesis Example 1, 2.4 g (6.40 mmol) of compound IMC-2 synthesized in Preparation Example 2 was used, and 3,3 '-(5-bromo-1,3-phenylene) dipyridine was used instead of 2 Compound AC-7 (2.40 g, yield: 62%) was obtained in the same manner as in Synthesis Example 1 except that 2.98 g (9.60 mmol) of -bromo-4,6-diphenylpyridine was used.

Exact Mass: 604 g / mol

Elemental Analysis: C, 85.40; H, 5. 33; N, 9.26

[ Synthetic example  8] compound AC Synthesis of -8

Compound AC-8 (2.99 g) was prepared in the same manner as in Synthesis Example 3, except that 2.32 g (8.71 mmol) of Compound IMC-2 synthesized in Preparation Example 2 was used instead of Compound IMC-1 used in Synthesis Example 3. , Yield 85%) was obtained.

Exact Mass: 605 g / mol

Elemental Analysis: C, 83.28; H, 5. 16; N, 11.56

[ Synthetic example  9] Compound AC Synthesis of -9

Instead of compound IMC-1 used in Synthesis Example 3, 2.14 g (5.71 mmol) of compound IMC-2 synthesized in Preparation Example 2 were used, and 2-chloro-4,6-diphenyl instead of 2-chloro-4,6-diphenylpyrimidine was used. Compound AC-9 (3.05 g, yield 88%) was obtained in the same manner as Synthesis Example 3, except that 2.29 g (8.57 mmol) of -1,3,5-triazine was used.

Exact Mass: 606 g / mol

Elemental Analysis: C, 81.16; H, 4.98; N, 13.85

Synthesis Example 10 Synthesis of Compound AC-10

Instead of compound IMC-1 used in Synthesis Example 3, 1.69 g (4.50 mmol) of compound IMC-2 synthesized in Preparation Example 2 was used, and 2,4-di (biphenyl-3) instead of 2-chloro-4,6-diphenylpyrimidine was used. Compound AC-10 (2.87 g, Yield 84%) was carried out in the same manner as in Synthesis Example 3, except that 2.83 g (6.75 mmol) of -yl) -6-chloro-1,3,5-triazine was used. Got it.

Exact Mass: 758 g / mol

Elemental Analysis: C, 83.88; H, 5.05; N, 11.07

[ Synthetic example  11] compound AC Synthesis of -11

Compound AC-11 (2.75 g) was prepared in the same manner as in Synthesis Example 1, except that 3.03 g (9.73 mmol) of Compound IMC-3 synthesized in Preparation Example 3 was used instead of Compound IMC-1 used in Synthesis Example 1. , Yield: 70%) was obtained.

Exact Mass: 605 g / mol

Elemental Analysis: C, 83.28; H, 5. 16; N, 11.56

[ Synthetic example  12] compounds AC Synthesis of -12

Instead of compound IMC-1 used in Synthesis Example 1, 2.38 g (6.35 mmol) of compound IMC-3 synthesized in Preparation Example 3 were used, and 2, instead of 3,3 '-(5-bromo-1,3-phenylene) dipyridine, was used. Compound AC-12 (2.61 g, yield 68%) was obtained in the same manner as in Synthesis Example 1 except that 2.96 g (9.53 mmol) of -bromo-4,6-diphenylpyridine was used.

Exact Mass: 604 g / mol

Elemental Analysis: C, 85.40; H, 5. 33; N, 9.26

[ Synthetic example  13] compound AC Synthesis of -13

Compound AC-13 (3.03 g) was prepared in the same manner as in Synthesis Example 3, except that 1.55 g (5.82 mmol) of Compound IMC-3 synthesized in Preparation Example 3 was used instead of Compound IMC-1 used in Synthesis Example 3. , Yield 86%).

Exact Mass: 605 g / mol

Elemental Analysis: C, 83.28; H, 5. 16; N, 11.56

[ Synthetic example  14] Compound AC Synthesis of -14

Instead of compound IMC-1 used in Synthesis Example 3, 2.24 g (5.97 mmol) of compound IMC-3 synthesized in Preparation Example 3 were used, and 2-chloro-4,6-diphenyl instead of 2-chloro-4,6-diphenylpyrimidine was used. Compound AC-14 (3.19 g, yield 88%) was obtained in the same manner as Synthesis Example 3, except that 2.40 g (8.96 mmol) of -1,3,5-triazine was used.

Exact Mass: 606 g / mol

Elemental Analysis: C, 81.16; H, 4.98; N, 13.85

[ Synthetic example  15] compound AC Synthesis of -15

Instead of compound IMC-1 used in Synthesis Example 3, 1.82 g (4.85 mmol) of compound IMC-3 synthesized in Preparation Example 3 was used, and 2,4-di (biphenyl-3) instead of 2-chloro-4,6-diphenylpyrimidine was used. Compound AC-15 (3.09 g, Yield 84%) was carried out in the same manner as in Synthesis Example 3, except that 3.05 g (7.28 mmol) of -yl) -6-chloro-1,3,5-triazine was used. Got it.

Exact Mass: 758 g / mol

Elemental Analysis: C, 83.88; H, 5.05; N, 11.07

[ Synthetic example  16] compound AC Synthesis of -16

Compound AC-16 (2.40 g) was prepared in the same manner as in Synthesis Example 1, except that 2.56 g (6.84 mmol) of Compound IMC-4 synthesized in Preparation Example 4 was used instead of Compound IMC-1 used in Synthesis Example 1. , Yield 58%).

Exact Mass: 604 g / mol

Elemental Analysis: C, 85.40; H, 5. 33; N, 9.26

[ Synthetic example  17] Compound AC Synthesis of -17

Instead of compound IMC-1 used in Synthesis Example 1, 2.75 g (7.34 mmol) of compound IMC-4 synthesized in Preparation Example 4 were used, and 3,3 '-(5-bromo-1,3-phenylene) dipyridine was used instead of 2 Compound AC-17 (2.66 g, yield: 60%) was obtained in the same manner as in Synthesis Example 1, except that 3.42 g (11.01 mmol) of -bromo-4,6-diphenylpyridine was used.

Exact Mass: 603 g / mol

Elemental Analysis: C, 87.53; H, 5.51; N, 6.96

Synthesis Example 18 Synthesis of Compound AC-18

Compound AC-18 (3.07 g) was prepared in the same manner as in Synthesis Example 3, except that 2.26 g (6.05 mmol) of Compound IMC-4 synthesized in Preparation Example 4 was used instead of Compound IMC-1 used in Synthesis Example 3. , Yield: 84%).

Exact Mass: 604 g / mol

Elemental Analysis: C, 85.40; H, 5. 33; N, 9.26

[ Synthetic example  19] Compound AC -19 Synthesis

Instead of compound IMC-1 used in Synthesis Example 3, 2.26 g (6.04 mmol) of compound IMC-4 synthesized in Preparation Example 4 was used, and 2-chloro-4,6-diphenyl instead of 2-chloro-4,6-diphenylpyrimidine was used. Compound AC-19 (3.00 g, yield: 82%) was obtained in the same manner as in Synthesis Example 3, except that 2.43 g (9.06 mol) of -1,3,5-triazine was used.

Exact Mass: 605 g / mol

Elemental Analysis: C, 83.28; H, 5. 16; N, 11.56

[ Synthetic example  20] compound AC Synthesis of -20

Instead of compound IMC-1 used in Synthesis Example 3, 1.73 g (4.63 mmol) of compound IMC-4 synthesized in Preparation Example 4 was used, and 2,4-di (biphenyl-3) instead of 2-chloro-4,6-diphenylpyrimidine was used. Compound AC-20 (3.12 g, Yield: 89%) in the same manner as in Synthesis Example 3, except that 2.92 g (6.95 mmol) of -yl) -6-chloro-1,3,5-triazine was used. Got.

Exact Mass: 757 g / mol

Elemental Analysis: C, 85.57; H, 5.19; N, 9.24

Synthesis Example 21 Synthesis of Compound AC-21

Compound AC-21 (5.55 g) was prepared in the same manner as in Synthesis Example 1, except that 4.99 g (13.29 mmol) of Compound IMC-5 synthesized in Preparation Example 5 was used instead of Compound IMC-1 used in Synthesis Example 1. , Yield: 69%).

Exact Mass: 605 g / mol

Elemental Analysis: C, 83.28; H, 5. 16; N, 11.56

[ Synthetic example  22] compound AC Synthesis of -22

Instead of compound IMC-1 used in Synthesis Example 1, 4.98 g (13.29 mmol) of compound IMC-5 synthesized in Preparation Example 5 were used, and 3,3 '-(5-bromo-1,3-phenylene) dipyridine was used instead of 2 Compound AC-22 (6.26 g, yield: 78%) was obtained in the same manner as in Synthesis Example 1, except that 6.18 g (19.94 mmol) of -bromo-4,6-diphenylpyridine was used.

Exact Mass: 604 g / mol

Elemental Analysis: C, 85.40; H, 5. 33; N, 9.26

[ Synthetic example  23] compound AC Synthesis of -23

Compound AC-23 (3.08 g) was prepared in the same manner as in Synthesis Example 3, except that 2.20 g (5.85 mmol) of Compound IMC-5 synthesized in Preparation Example 5 was used instead of Compound IMC-1 used in Synthesis Example 3. , Yield: 87%).

Exact Mass: 605 g / mol

Elemental Analysis: C, 83.28; H, 5. 16; N, 11.56

Synthesis Example 24 Synthesis of Compound AC-24

Instead of compound IMC-1 used in Synthesis Example 3, 2.20 g (5.85 mmol) of compound IMC-5 synthesized in Preparation Example 5 were used, and 2-chloro-4,6-diphenyl instead of 2-chloro-4,6-diphenylpyrimidine was used. Compound AC-24 (3.30 g, yield: 93%) was obtained in the same manner as in Synthesis Example 3, except that 2.64 g (9.85 mmol) of -1,3,5-triazine was used.

Exact Mass: 606 g / mol

Elemental Analysis: C, 81.16; H, 4.98; N, 13.85

[ Synthetic example  25] compound AC Synthesis of -25

Instead of compound IMC-1 used in Synthesis Example 3, 2.20 g (5.85 mmol) of compound IMC-5 synthesized in Preparation Example 5 was used, and 2,4-di (biphenyl-3) instead of 2-chloro-4,6-diphenylpyrimidine was used. Compound AC-25 (4.08 g, Yield: 92%) in the same manner as in Synthesis Example 3, except that 4.12 g (9.85 mmol) of -yl) -6-chloro-1,3,5-triazine was used. Got.

Exact Mass: 758 g / mol

Elemental Analysis: C, 83.88; H, 5.05; N, 11.07

[ Synthetic example  26] compound AC Synthesis of -26

Except for using the compound IMC-6 6.64 (13.29 mmol) synthesized in Preparation Example 6 instead of the compound IMC-1 used in Synthesis Example 1, the compound AC-26 (6.30 g, Yield: 65%).

Exact Mass: 729 g / mol

Elemental Analysis: C, 85.57; H, 4.83; N, 9.60

[ Synthetic example  27] compound AC -27

Instead of compound IMC-1 used in Synthesis Example 1, compound IMC-6 6.64 (13.29 mmol) synthesized in Preparation Example 6 was used, and 2- instead of 3,3 '-(5-bromo-1,3-phenylene) dipyridine was used. Compound AC-27 (6.39 g, yield: 66%) was obtained in the same manner as in Synthesis Example 1 except that 8.24 g (26.57 mmol) of bromo-4,6-diphenylpyridine was used.

Exact Mass: 728 g / mol

Elemental Analysis: C, 87.33; H, 4.98; N, 7.69

[ Synthetic example  28] compound AC -28 Synthesis

Compound AC-28 (3.50 g) was prepared in the same manner as in Synthesis Example 3, except that 2.92 g (5.85 mmol) of Compound IMC-6 synthesized in Preparation Example 6 was used instead of Compound IMC-1 used in Synthesis Example 3. , Yield: 82%) was obtained.

Exact Mass: 729 g / mol

Elemental Analysis: C, 85.57; H, 4.83; N, 9.60

[ Synthetic example  29] compound AC Synthesis of -29

Instead of compound IMC-1 used in Synthesis Example 3, 2.92 g (5.85 mmol) of compound IMC-6 synthesized in Preparation Example 6 were used, and 2-chloro-4,6-diphenyl instead of 2-chloro-4,6-diphenylpyrimidine was used. Compound AC-29 (3.72 g, yield 87%) was obtained in the same manner as Synthesis Example 3, except that 2.64 g (9.85 mmol) of -1,3,5-triazine was used.

Exact Mass: 730 g / mol

Elemental Analysis: C, 83.81; H, 4.69; N, 11.50

[ Synthetic example  30] Compound AC Synthesis of -30

Instead of compound IMC-1 used in Synthesis Example 3, 2.92 g (5.85 mmol) of compound IMC-6 synthesized in Preparation Example 6 were used, and 2,4-di (biphenyl-3) instead of 2-chloro-4,6-diphenylpyrimidine was used. Compound AC-30 (4.85 g, Yield: 94%) in the same manner as in Synthesis Example 3, except that 4.14 g (9.85 mmol) of -yl) -6-chloro-1,3,5-triazine was used. Got.

Exact Mass: 882 g / mol

Elemental Analysis: C, 85.69; H, 4.79; N, 9.52

[ Example  1] Green organic EL  Device fabrication

Compound AC-1 synthesized in Synthesis Example 1 was subjected to high purity sublimation purification by a conventionally known method, and then a green organic EL device was manufactured according to the following procedure.

Glass substrate coated with ITO (Indium tin oxide) thin film with thickness of 1500 Å was washed with distilled water ultrasonic wave. After the distilled water was washed, the substrate was ultrasonically washed with a solvent such as isopropyl alcohol, acetone, or methanol, and dried. Then, the substrate was transferred to a UV OZONE cleaner (Power sonic 405, Hoshin Tech) And the substrate was transferred to a vacuum evaporator.

On the ITO transparent electrode prepared as above, m-MTDATA (60 nm) / TCTA (80 nm) / compound AC-10 + 10% Ir (ppy) ₃ (300nm) / BCP (10 nm) / Alq ₃ (30 nm) ) / LiF (1 nm) / Al (200 nm) was laminated in order to manufacture an organic EL device.

The structures of m-MTDATA, TCTA, Ir (ppy) ₃ , CBP and BCP used are as follows.

Example 2 to 30 Fabrication of Green Organic EL Device

In the same manner as in Example 1 except for using the compounds AC-1 to AC-30 synthesized in Synthesis Examples 2 to 30 instead of the compound AC-1 used as a host material when forming the emission layer in Example 1 A green organic EL device was manufactured.

[Comparative Example 1] Production of green organic EL device

A green organic EL device was manufactured in the same manner as in Example 1, except that CBP (4,4-dicarbazolybiphenyl) was used instead of the compound AC-1 used as a host material in forming the emission layer in Example 1.

[Evaluation example]

The driving voltage, current efficiency, and emission peak at a current density of 10 mA / cm 2 were measured for green organic EL devices prepared in Examples 1 to 30 and Comparative Example 1, respectively, and the results are shown in Table 1 below.

Host The driving voltage (V) EL peak (nm) Current efficiency (cd / A) Example 1 Compound AC-1 6.88 515 44.0 Example 2 Compound AC-2 6.76 518 44.8 Example 3 Compound AC-3 6.61 517 44.2 Example 4 Compound AC-4 6.71 515 44.7 Example 5 Compound AC-5 6.67 518 44.5 Example 6 Compound AC-6 6.52 515 43.2 Example 7 Compound AC-7 6.53 518 43.3 Example 8 Compound AC-8 6.50 517 43.5 Example 9 Compound AC-9 6.55 515 44.2 Example 10 Compound AC-10 6.52 518 44.3 Example 11 Compound AC-11 6.51 515 43.4 Example 12 Compound AC-12 6.50 518 44.5 Example 13 Compound AC-13 6.53 517 43.6 Example 14 Compound AC-14 6.54 515 43.7 Example 15 Compound AC-15 6.50 518 44.8 Example 16 Compound AC-16 6.86 515 44.2 Example 17 Compound AC-17 6.74 518 43.3 Example 18 Compound AC-18 6.63 517 44.3 Example 19 Compound AC-19 6.72 515 44.3 Example 20 Compound AC-20 6.71 518 43.5 Example 21 Compound AC-21 6.54 515 44.6 Example 22 Compound AC-22 6.56 518 43.2 Example 23 Compound AC-23 6.54 517 44.2 Example 24 Compound AC-24 6.55 515 43.7 Example 25 Compound AC-25 6.53 518 44.5 Example 26 Compound AC-26 6.55 515 44.0 Example 27 Compound AC-27 6.51 518 44.3 Example 28 Compound AC-28 6.52 517 43.3 Example 29 Compound AC-29 6.53 515 44.1 Example 30 Compound AC-30 6.54 518 44.1 Comparative Example 1 CBP 6.93 516 38.2

As a result of the experiment, as shown in Table 1, the green organic EL device manufactured in Examples 1 to 30 using the compound (compound AC-1 to compound AC-30) according to the present invention as a host material of the light emitting layer In comparison with the green organic EL device (Comparative Example 1) using CBP, which is a conventional host material, it was found to exhibit better performance in terms of efficiency and driving voltage.

Claims (9)

A compound represented by the following formula (1):
[Chemical Formula 1]

(In Formula 1,
X ₁ to X ₈ are each independently CR ₁₁ or N, wherein a plurality of CR ₁₁ are the same as or different from each other;
R ₁₁ is hydrogen, deuterium, halogen, cyano group, substituted or unsubstituted C ₁ to C ₄₀ alkyl group, substituted or unsubstituted C ₂ to C ₄₀ alkenyl group, substituted or unsubstituted C ₂ to C ₄₀ Alkynyl group, substituted or unsubstituted C ₃ to C ₄₀ cycloalkyl group, substituted or unsubstituted C ₃ to C ₄₀ heterocycloalkyl group, substituted or unsubstituted C ₆ to C ₆₀ aryl group, substituted or unsubstituted Heteroaryl group having 5 to 60 carbon atoms, substituted or unsubstituted C ₁ to C ₄₀ alkyloxy group, substituted or unsubstituted C ₆ to C ₆₀ aryloxy group, substituted or unsubstituted C ₁ to An alkylsilyl group of C ₄₀ , a substituted or unsubstituted C ₆ -C ₆₀ arylsilyl group, and a substituted or unsubstituted C ₆ -C ₆₀ arylamine group, wherein they are fused with adjacent groups Thereby forming or not forming an aromatic ring or heteroaromatic ring;
Provided that at least one of X ₁ to X ₈ forms a fused ring represented by Formula 2 with an adjacent group;
(2)

In Chemical Formula 2,
Y ₁ to Y ₄ are each independently CR ₁₂ or N, wherein a plurality of CR ₁₂ are the same as or different from each other;
R ₁₂ is hydrogen, deuterium, halogen, cyano group, substituted or unsubstituted C ₁ to C ₄₀ alkyl group, substituted or unsubstituted C ₂ to C ₄₀ alkenyl group, substituted or unsubstituted C ₂ to C ₄₀ Alkynyl group, substituted or unsubstituted C ₃ to C ₄₀ cycloalkyl group, substituted or unsubstituted C ₃ to C ₄₀ heterocycloalkyl group, substituted or unsubstituted C ₆ to C ₆₀ aryl group, substituted or unsubstituted Heteroaryl group having 5 to 60 carbon atoms, substituted or unsubstituted C ₁ to C ₄₀ alkyloxy group, substituted or unsubstituted C ₆ to C ₆₀ aryloxy group, substituted or unsubstituted C ₁ to An alkylsilyl group of C ₄₀ , a substituted or unsubstituted C ₆ -C ₆₀ arylsilyl group, and a substituted or unsubstituted C ₆ -C ₆₀ arylamine group, wherein they are fused with adjacent groups Thereby forming or not forming an aromatic ring or heteroaromatic ring;
Ar ₁ and Ar ₂ are each independently a substituted or unsubstituted C ₁ to C ₄₀ alkyl group, a substituted or unsubstituted C ₂ to C ₄₀ alkenyl group, a substituted or unsubstituted C ₂ to C ₄₀ alkynyl group , A substituted or unsubstituted C ₃ ~ C ₄₀ cycloalkyl group, a substituted or unsubstituted C ₃ ~ C ₄₀ heterocycloalkyl group, a substituted or unsubstituted C ₆ ~ C ₆₀ aryl group, a substituted or unsubstituted nucleus Heteroaryl group having 5 to 60 atoms, substituted or unsubstituted C ₁ to C ₄₀ alkyloxy group, substituted or unsubstituted C ₆ to C ₆₀ aryloxy group, substituted or unsubstituted C ₁ to C ₄₀ Alkylsilyl group, substituted or unsubstituted C ₆ ~ C ₆₀ arylsilyl group and substituted or unsubstituted C ₆ ~ C ₆₀ arylamine group selected from the group consisting of a fused ring with an adjacent group Form or non-form;
R ₂₁ and R ₂₂ are each independently hydrogen, a substituted or unsubstituted C ₁ to C ₄₀ alkyl group, a substituted or unsubstituted C ₆ to C ₆₀ aryl group, or a substituted or unsubstituted nuclear atom having 5 to 60 atoms. Heteroaryl groups are selected from the group consisting of;
The alkyl group, alkenyl group, alkynyl group, cycloalkyl group, heterocycloalkyl group, aryl group, heteroaryl group, alkyloxy group, aryloxy group, alkyl of R ₁₁ , R _12, R ₂₁ , R ₂₂ , Ar ₁ and Ar ₂ One or more substituents that can be introduced to each of the silyl, arylsilyl and arylamine groups are each independently deuterium, halogen, nitrile, nitro, cyano, C ₁ -C ₄₀ alkyl, C ₂ -C ₄₀ alkenes group, C ₁ ~ C ₄₀ alkoxy group, C ₁ ~ C ₄₀ of the amino group, C of ₃ ~ C ₄₀ cycloalkyl group, the number of nuclear atoms of 3 to 40 heterocycloalkyl group, C ₆ ~ C ₄₀ aryl group, a nuclear atom Heteroaryl group of 5 to 60, C ₁ ~ C ₄₀ alkyloxy group, C ₆ ~ C ₆₀ aryloxy group, C ₁ ~ C ₄₀ alkylsilyl group, C ₆ ~ C ₆₀ arylsilyl group, C ₁ ~ C ₄₀ group of an alkyl boron, C ₆ ~ C group ₆₀ arylboronic of, C ₆ ~ C ₆₀ aryl phosphine group, C ₆ ~ C ₆₀ aryl phosphine oxide group, and a C ₆ ~ arylamine group of C ₆₀ of In the county Wherein the plurality of substituents may be the same or different from each other). A compound according to claim 1, represented by the following formula (3) or (4):
(3)

; And
[Chemical Formula 4]

(In Chemical Formulas 3 and 4,
X ₁ to X ₅ , and X ₈ are each independently CR ₁₁ or N, wherein a plurality of CR ₁₁ are the same as or different from each other;
Y ₁ to Y ₄ are each independently CR ₁₂ or N, wherein a plurality of CR ₁₂ are the same as or different from each other;
Provided that at least one of X ₁ to X ₅ , X ₈ and Y ₁ to Y ₄ is N;
R ₁₁ , R ₁₂ , R ₂₁ , R ₂₂ , Ar ₁ and Ar ₂ are the same as defined in claim 1, respectively). The compound of claim 1, wherein the compound is represented by any one of Formulas 5 to 8:
[Chemical Formula 5]

;
[Chemical Formula 6]

;
(7)
; And
[Chemical Formula 8]

(In Chemical Formulas 5 to 8,
X ₁ to X _{8 ,} Y ₁ to Y ₄ , R ₂₁ , R ₂₂ , Ar ₁ , and Ar ₂ are the same as defined in claim ₁ , respectively). 4. The method according to any one of claims 1 to 3,
Ar ₁ and Ar ₂ are each independently selected from the group consisting of C ₆ ~ C ₆₀ aryl group and a heteroaryl group of 5 to 60 nuclear atoms,
One or more substituents that may be introduced into each of the aryl group and heteroaryl group of Ar ₁ and Ar ₂ are each independently deuterium, halogen, nitrile group, nitro group, cyano group, C ₁ ~ C ₄₀ alkyl group, C ₂ ~ C ₄₀ alkenyl group, C ₁ to C ₄₀ alkoxy group, C ₁ to C ₄₀ amino group, nuclear atom 3 to 40 cycloalkyl group, C ₃ to C ₄₀ heterocycloalkyl group, C ₆ to C ₆₀ aryl group, nuclear atoms aryl of from 5 to 60 heteroaryl group, a C ₁ ~ C ₄₀ of the alkyloxy group, C ₆ ~ C ₆₀ aryloxy group, C ₁ ~ C ₄₀ alkylsilyl group, C ₆ ~ aryl of C ₆₀ silyl group, C ₁ ~ C ₄₀ group of an alkyl boron, C ₆ ~ C group ₆₀ arylboronic of, C ₆ ~ C ₆₀ aryl phosphine group, C ₆ ~ aryl phosphine oxide of a C ₆₀ group, and a C ₆ ~ C ₆₀ Is selected from the group consisting of an arylamine group, wherein the plurality of substituents is characterized in that the same or different from each other. 1. An organic electroluminescent device comprising an anode, a cathode, and at least one organic material layer interposed between the anode and the cathode,
At least one of the one or more organic material layers is an organic electroluminescent device, characterized in that it comprises the compound according to any one of claims 1 to 3. The method of claim 5,
Wherein at least one organic compound layer containing the compound is selected from the group consisting of a hole injection layer, a hole transport layer, and a light emitting layer. The method of claim 5,
The organic material layer containing the compound is an organic electroluminescent device, characterized in that the light emitting layer. The method of claim 7, wherein
The compound is an organic electroluminescent device, characterized in that the phosphorescent host. The method of claim 5,
The organic material layer containing the compound is an organic electroluminescent device, characterized in that the hole transport layer.