KR101597865B1 - New compounds and organic electronic device using the same - Google Patents

Abstract

The present invention provides a novel compound and an organic electronic device using the same. The compound according to the present invention can perform hole injection, hole transport, electron injection and transport, and a light emitting material in an organic electronic device including an organic light emitting device, and the organic electronic device according to the present invention can improve efficiency, .

Description

TECHNICAL FIELD [0001] The present invention relates to a novel compound, and an organic electronic device using the same. BACKGROUND OF THE INVENTION [0002]

The present application claims the benefit of Korean Patent Application No. 10-2011-0084783 filed on August 24, 2011 with the Korean Intellectual Property Office, the entire contents of which are incorporated herein by reference.

The present invention relates to a novel compound and an organic electronic device using the same.

In the present specification, an organic electronic device is an electronic device using an organic semiconductor material, and requires the exchange of holes and / or electrons between the electrode and the organic semiconductor material. The organic electronic device can be roughly classified into two types according to the operating principle as described below. First, an exciton is formed in an organic material layer by a photon introduced into an element from an external light source. The exciton is separated into an electron and a hole, and the electrons and holes are transferred to different electrodes to be used as a current source Is an electronic device. The second type is an electronic device that injects holes and / or electrons into an organic semiconductor material layer that interfaces with the electrode by applying a voltage or current to two or more electrodes, and operates by injected electrons and holes.

Examples of the organic electronic device include an organic light emitting device, an organic solar cell, an organic photoconductor (OPC) drum, and an organic transistor. These devices include an electron / hole injecting material, an electron / hole extracting material, Materials or luminescent materials. Hereinafter, the organic light emitting device will be described in detail, but in the organic electronic devices, the electron / hole injecting material, the electron / hole extracting material, the electron / hole transporting material, or the light emitting material all have a similar principle.

In general, organic light emission phenomenon refers to a phenomenon in which an organic material is used to convert electric energy into light energy. An organic light emitting device using an organic light emitting phenomenon usually has a structure including an anode and a cathode and an organic layer between them. Here, in order to increase the efficiency and stability of the organic light emitting device, the organic material layer may have a multi-layer structure composed of different materials and may include a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, and an electron injection layer. When a voltage is applied between two electrodes in the structure of the organic light emitting device, holes are injected into the anode, electrons are injected into the organic layer, electrons are injected into the organic layer, excitons are formed when injected holes and electrons meet, When it falls to a state, it becomes a light. Such an organic light emitting device is known to have characteristics such as self-emission, high luminance, high efficiency, low driving voltage, wide viewing angle, high contrast, and high speed response.

A material used as an organic material layer in an organic light emitting device can be classified into a light emitting material and a charge transporting material such as a hole injecting material, a hole transporting material, an electron transporting material, and an electron injecting material depending on functions. The luminescent material has blue, green and red luminescent materials and yellow and orange luminescent materials necessary for realizing a better natural color depending on the luminescent 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 principle is that when a small amount of dopant having a smaller energy band gap and a higher luminous efficiency than a host mainly constituting the light emitting layer is mixed with the light emitting layer in a small amount, the excitons generated in the host are transported to the dopant to emit light with high efficiency. At this time, since the wavelength of the host is shifted to the wavelength band of the dopant, the desired wavelength light can be obtained depending on the type of the dopant used.

In order to sufficiently exhibit the excellent characteristics of the organic light emitting device, a material constituting the organic material layer in the device such as a hole injecting material, a hole transporting material, a light emitting material, an electron transporting material, and an electron injecting material is supported by a stable and efficient material However, the development of a stable and efficient organic material layer material for an organic light emitting device has not yet been sufficiently achieved, and therefore, the development of new materials has been continuously required.

Korean Patent Publication No. 10-2011-0027635

The present inventors have found a compound having a novel structure. In addition, when the organic compound layer of the organic electronic device is formed using the novel compound, it has been found that the organic compound layer can exhibit the effects of increasing the efficiency of the device, lowering the driving voltage, and increasing the stability.

Accordingly, an object of the present invention is to provide a novel compound and an organic electronic device using the same.

The present invention provides a compound represented by the following formula (1).

[Chemical Formula 1]

In Formula 1,

L ₁ and L ₂ are the same or different and are each independently a direct bond; Or a substituted or unsubstituted C ₆ to C ₃₀ arylene group,

Ar ₁ and Ar ₂ are the same or different and each independently represents hydrogen, deuterium, a substituted or unsubstituted C ₁ to C ₂₀ alkyl group, a substituted or unsubstituted C ₂ to C ₂₀ alkenyl group, of C ₃ ~ C ₂₀ cycloalkyl group, a substituted or unsubstituted C ₅ ~ C ₃₀ cycloalkenyl group, a substituted or unsubstituted C ₁ ~ C ₃₀ alkoxy group, a substituted or unsubstituted C ₆ ~ C ₂₀ rings of A substituted or unsubstituted C ₁ to C ₃₀ alkylthio group, a substituted or unsubstituted C ₆ to C ₂₀ arylthioxy group, a substituted or unsubstituted C ₁ to C ₃₀ alkylamine group, a substituted Or an unsubstituted C ₆ -C ₃₀ arylamine group, a substituted or unsubstituted C ₆ -C ₃₀ aryl group, a C ₃ -C ₃₀ heteroaryl having a substituted or unsubstituted heteroatom, O, N or S A substituted or unsubstituted silyl group, a carbonyl group, a phosphoryl group, an amino group, a nitrile group, a nitro group, Which may form a condensed ring of an aliphatic, aromatic, aliphatic hetero or aromatic hetero with an adjacent group selected from the group consisting of a hydroxyl group, a halogen group, an amide group and an ester group,

n is an integer of 1 to 3, and when n is 2 or more, the structures in parentheses are the same or different from each other,

a and b are each independently an integer of 0 to 3, c is an integer of 0 to 5,

X ₁ , X _2, and X ₃ are the same or different from each other, and each independently hydrogen; A substituted or unsubstituted C ₁ to C ₂₄ alkyl group; A substituted or unsubstituted C ₂ -C ₂₄ alkenyl group; A substituted or unsubstituted C ₂ -C ₂₄ alkynyl group; A substituted or unsubstituted C ₃ -C ₂₀ cycloalkyl group; A substituted or unsubstituted C ₃ -C ₂₀ heterocycloalkyl group; A substituted or unsubstituted C ₆ -C ₅₀ aryl group; A substituted or unsubstituted C ₃ -C ₅₀ heteroaryl group; A substituted or unsubstituted fluorenyl group; A substituted or unsubstituted carbazolyl group; And substituted or unsubstituted arylamine groups.

The present invention also provides an organic electronic device comprising a first electrode, a second electrode, and at least one organic material layer disposed between the first electrode and the second electrode, wherein at least one of the organic material layers is represented by Formula 1 And a compound represented by the following general formula (1): < EMI ID = 1.0 >

The novel compounds according to the present invention can be used as organic material layers of organic electronic devices including organic light emitting devices by introducing various aryl groups, heteroaryl groups, arylamine groups and the like. The organic electronic device including the organic light emitting device using the compound represented by the formula (1) according to the present invention as the material of the organic material layer exhibits excellent characteristics in terms of efficiency, driving voltage and lifetime.

1 is an example of an organic light emitting device structure in which an anode 102, a light emitting layer 105, and a cathode 107 are sequentially stacked on a substrate 101.
2 is an example of an organic light emitting device structure in which an anode 102, a hole injection / hole transporting and light emitting layer 105, an electron transporting layer 106, and a cathode 107 are sequentially laminated on a substrate 101.
3 is an example of an organic light emitting device structure in which a substrate 101, an anode 102, a hole injecting layer 103, a hole transporting and emitting layer 105, an electron transporting layer 106, and a cathode 107 are sequentially stacked .
4 is an example of an organic light emitting device structure in which a substrate 101, an anode 102, a hole injecting layer 103, a hole transporting layer 104, an electron transporting and emitting layer 105, and a cathode 107 are sequentially stacked .

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

The novel compound according to the present invention is characterized by being represented by the above formula (1).

In the compound according to the present invention, the substituents of the above formula (1) will be described in more detail as follows.

The alkyl group may be linear or branched, and the number of carbon atoms is not particularly limited, but is preferably 1 to 12. Specific examples include, but are not limited to, methyl, ethyl, propyl, isopropyl, butyl, t-butyl, pentyl, hexyl and heptyl.

The alkenyl group may be straight-chain or branched, and the number of carbon atoms is not particularly limited, but is preferably 2 to 12. Specific examples thereof include, but are not limited to, an alkenyl group having an aryl group such as a stilbenyl group or a styrenyl group.

The alkynyl group may be linear or branched, and the number of carbon atoms is not particularly limited, but is preferably 2 to 12. Specific examples thereof include, but are not limited to, an ethynyl group and a propynyl group.

The cycloalkyl group preferably has 3 to 12 carbon atoms and does not give steric hindrance. Specific examples thereof include, but are not limited to, a cyclopentyl group, a cyclohexyl group, and the like.

The cycloalkenyl group preferably has 3 to 12 carbon atoms, and more specifically, a cyclic compound having ethenylene in a pentagonal or hexagonal ring, but is not limited thereto.

The alkoxy group preferably has 1 to 12 carbon atoms, more specifically, methoxy, ethoxy, isopropyloxy, and the like, but is not limited thereto.

The aryloxy group preferably has 6 to 20 carbon atoms, and more specifically, phenyloxy, cyclohexyloxy, naphthyloxy, diphenyloxy, and the like, but is not limited thereto.

The alkylamine group preferably has 1 to 30 carbon atoms, and more specifically, it may be a methylamine group, a dimethylamine group, an ethylamine group, or a diethylamine group, but is not limited thereto.

The arylamine group preferably has 6 to 30 carbon atoms. More specifically, examples thereof include a phenylamine group, a naphthylamine group, a biphenylamine group, an anthracenylamine group, a 3-methylphenylamine group, a 4-methylnaphthylamine group, Methyl-anthracenylamine group, diphenylamine group, phenylnaphthylamine group, ditolylamine group, phenyltolylamine group, triphenylamine group and the like. But are not limited thereto.

The aryl group may be monocyclic or polycyclic, and the number of carbon atoms is not particularly limited, but is preferably 6 to 40. Examples of the monocyclic aryl group include a phenyl group, a biphenyl group, a terphenyl group and a stilbene group. Examples of the polycyclic aryl group include a naphthyl group, an anthracenyl group, a phenanthrene group, a pyrenyl group, a perylenyl group, A decyl group, and the like, but the present invention is not limited thereto.

The heteroaryl group is a ring group containing a hetero atom such as O, N, S or P, and the number of carbon atoms is not particularly limited, but is preferably 3 to 30 carbon atoms. Examples of the heterocyclic group include carbazole group, thiophene group, furan group, pyrrolyl group, imidazole group, thiazole group, oxazole group, oxadiazole group, triazole group, pyridyl group, pyrazazinyl group, quinolinyl group, isoquinoline group , Acridyl groups, and the like, but are not limited thereto.

Examples of the halogen group include, but are not limited to, fluorine, chlorine, bromine, and iodine.

Specific examples of the arylene group include, but are not limited to, a phenylene group, a biphenylene group, a naphthalenylene group, a binaphthalene group, an anthracenylene group, a fluorenylene group, a klychenylene group and a phenanthrenylene group .

Examples of the heterocycloalkyl group include a ring group containing a hetero atom such as N, S or O. [

The term "substituted or unsubstituted" in the present specification means a group selected from the group consisting of deuterium, halogen, alkyl, alkenyl, alkoxy, silyl, arylalkenyl, aryl, Substituted or unsubstituted fluorenyl group and a nitrile group, or has no substituent group.

Examples of the substituent which may be additionally substituted for L ₁ , L ₂ , Ar ₁ , Ar ₂ , X ₁ , X ₂ and X ₃ in the above formula (1) include halogen, alkyl, alkenyl, alkoxy, silyl, arylalkenyl , An aryl group, a heteroaryl group, a carbazole group, an arylamine group, a fluorenyl group substituted or unsubstituted with an aryl group, a nitrile group, and the like, but is not limited thereto.

L ₁ and L ₂ in Formula 1 are each independently a direct bond; But are not limited to, a phenylene group, a biphenylene group, a naphthalenylene group, a binaphthalene group, an anthracenylene group, a fluorenylene group, a klychenylene group, a phenanthrenylene group and the like.

Wherein Ar ₁ and Ar ₂ are each independently selected from the group consisting of hydrogen, a substituted or unsubstituted C ₆ to C ₃₀ aryl group, a C ₃ to C ₃₀ heteroatom having a substituted or unsubstituted heteroatom, O, N, or S, An aryl group, a substituted or unsubstituted boron group, a substituted or unsubstituted silane group, a carbonyl group or a phosphoryl group, and is preferably a hydrogen atom, a phenyl group, a naphthyl group, a phenanthrene group, a pyrene group, an anthracene group, A thiophene group, a dibenzothiophene group, or a benzimidazole group, but is not limited thereto.

X ₁ , X _2, and X ₃ in Formula 1 are each independently hydrogen; A substituted or unsubstituted C ₁ to C ₂₄ alkyl group; A substituted or unsubstituted C ₆ -C ₅₀ aryl group; Or a substituted or unsubstituted C ₃ -C ₅₀ heteroaryl group, and is preferably a hydrogen atom, a hydrogen atom, a phenyl group, a naphthyl group, a phenanthrene group, a pyrene group, an anthracene group, a fluorene group, a carbazole group, a thiophene group, More preferably an alkyl group, an alkenyl group, an alkenyl group, an alkenyl group, an alkenyl group, an alkynyl group,

The compound of formula (1) may be represented by any one of the following formulas (2) to (5), but is not limited thereto.

(2)

(3)

[Chemical Formula 4]

[Chemical Formula 5]

In the above Chemical Formulas 2 to 5,

Wherein L ₁ , L ₂ , Ar ₁ , Ar ₂ , X ₁ , X ₂ , X ₃ , a, b and c are as defined in the above formula

L ₃ and L ₄ are the same as defined for L ₁ and L ₂ in the formula 1, Ar ₃ and Ar ₄ are the same as defined for Ar ₁ and Ar ₂ in the formula 1, and X ₄ , X ₅ , X ₆ , X ₇ , X ₈ and X ₉ are independently the same as defined for X ₁ to X _{3 in} the above formula (1)

d, e, g and i are each independently an integer of 0 to 3, and f and h are each independently an integer of 0 to 5.

Specific examples of the compound of Formula 1 include the compounds shown in Tables 1 and 2 below, but are not limited thereto.

[Table 1]

[Table 2]

Hereinafter, a method for producing the compound represented by the above formula (1) will be described.

The compound represented by Formula 1 may be prepared by a general method known in the art such as a condensation reaction and a Suzuki coupling reaction.

The compounds represented by the formula (1) may have properties suitable for use as an organic layer used in an organic light emitting device by introducing various substituents into the core structure represented by the formula. The compound represented by the formula (1) may be used in any layer of an organic light emitting device, but may have the following characteristics.

Compounds having a substituted or unsubstituted arylamine group are suitable as a light emitting layer, a hole injecting and hole transporting layer material, and a compound having a heterocyclic group containing N is suitable as an electron injecting layer, an electron transporting layer and a hole blocking layer material.

The conjugation length of the compound and the energy band gap are closely related. Specifically, the longer the conjugation length of the compound, the smaller the energy bandgap. As described above, since the core of the compound represented by the above formula (1) includes limited conjugation, the energy band gap has a large property from a small property.

Further, by introducing various substituents into the core structure having the above structure, it is possible to synthesize a compound having the intrinsic characteristics of the substituent introduced. For example, the hole injecting layer material and the hole transporting layer materials used in manufacturing the organic light emitting device have energy levels enough to transfer holes along the HOMO, and energy levels enough to block electrons passing through the LUMO from the light emitting layer ≪ / RTI > Particularly, the core structure of the present compound exhibits stable characteristics in terms of electrons, which can contribute to improvement of lifetime of the device. The derivatives made by introducing the substituents for use in the light emitting layer and the electron transporting substance can be manufactured to have suitable energy band gaps for various arylamine type dopants, aryl type dopants, metal containing dopants and the like.

Further, by introducing various substituent groups into the core structure, it is possible to finely control the energy band gap, and the characteristics at the interface between the organic materials can be improved and the use of the material can be diversified.

On the other hand, the compounds represented by Formula 1 have high glass transition temperature (Tg) and thus are excellent in thermal stability. This increase in thermal stability is an important factor in providing drive stability to the device.

Further, the organic electronic device according to the present invention is an organic electronic device comprising a first electrode, a second electrode, and at least one organic layer disposed between the first electrode and the second electrode, wherein at least one of the organic layers And the compound of formula (1).

The organic electronic device of the present invention can be produced by a conventional method and materials for producing an organic electronic device, except that one or more organic compound layers are formed using the above-described compounds.

Further, the organic electronic device according to the present invention is an organic electronic device comprising a first electrode, a second electrode, and at least one organic layer disposed between the first electrode and the second electrode, wherein at least one of the organic layers And a compound represented by the above formula (1).

The organic electronic device of the present invention can be produced by a conventional method and materials for producing an organic electronic device, except that one or more organic compound layers are formed using the above-described compounds.

The compound of Formula 1 may be formed into an organic material layer by a solution coating method as well as a vacuum evaporation method in the production of an organic electronic device. Here, the solution coating method refers to spin coating, dip coating, inkjet printing, screen printing, spraying, roll coating, and the like, but is not limited thereto.

The organic material layer of the organic electronic device of the present invention may have a single layer structure, but may have a multilayer structure in which two or more organic material layers are stacked. For example, the organic electronic device of the present invention may have a structure including a hole injecting layer, a hole transporting layer, a light emitting layer, an electron transporting layer, an electron injecting layer, and the like as an organic material layer. However, the structure of the organic electronic device is not limited to this, and may include a smaller number of organic layers.

Therefore, in the organic electronic device of the present invention, the organic material layer may include at least one of a hole injecting layer, a hole transporting layer, and a layer simultaneously injecting holes and transporting holes, Lt; / RTI >

In addition, the organic material layer may include a light emitting layer, and the light emitting layer may include a compound represented by the general formula (1).

The organic material layer may include at least one of an electron transporting layer, an electron injecting layer, and a layer that simultaneously performs electron transport and electron injection, and at least one of the layers may include a compound represented by Formula 1 have.

In the organic layer having such a multi-layer structure, the compound of Formula 1 may be included in a light emitting layer, a layer that simultaneously transports holes and holes, a layer that simultaneously transports holes and light, or a layer that simultaneously transports electrons and emits light.

For example, the structure of the organic light emitting device of the present invention may have a structure as shown in Figs. 1 to 4, but is not limited thereto.

FIG. 1 illustrates a structure of an organic light emitting device in which an anode 102, a light emitting layer 105, and a cathode 107 are sequentially stacked on a substrate 101. In such a structure, the compound of Formula 1 may be included in the light emitting layer 105.

2 illustrates a structure of an organic light emitting device in which an anode 102, a hole injection / hole transporting and light emitting layer 105, an electron transporting layer 106, and a cathode 107 are sequentially stacked on a substrate 101. In such a structure, the compound of Formula 1 may be included in the hole injection / hole transporting and light emitting layer 105.

3 shows a structure of an organic light emitting device in which a substrate 101, an anode 102, a hole injecting layer 103, a hole transporting and emitting layer 105, an electron transporting layer 106, and a cathode 107 are sequentially stacked. . In such a structure, the compound of Formula 1 may be included in the hole injection / hole transporting and light emitting layer 105.

4 shows a structure of an organic light emitting device in which a substrate 101, an anode 102, a hole injecting layer 103, a hole transporting layer 104, an electron transporting and emitting layer 105, and a cathode 107 are sequentially laminated. . In such a structure, the compound of Formula 1 may be included in the electron transporting and light emitting layer 105.

In the organic electronic device of the present invention, it is more preferable that the compound represented by the formula (1) is contained in an electron transporting layer or a layer which simultaneously performs electron transport and electron injection.

For example, the organic light emitting device according to the present invention may be formed by using a PVD (physical vapor deposition) method such as sputtering or e-beam evaporation to form a metal oxide or a metal oxide having conductivity on the substrate, To form an anode, an organic material layer including a hole injection layer, a hole transporting layer, a light emitting layer, and an electron transporting layer is formed on the anode, and a material which can be used as a cathode is deposited thereon. In addition to such a method, an organic light emitting device may be formed by sequentially depositing a cathode material, an organic material layer, and a cathode material on a substrate.

The organic material layer may have a multi-layer structure including a hole injection layer, a hole transport layer, a light emitting layer, and an electron transport layer, but is not limited thereto and may have a single layer structure. The organic material layer may be formed using a variety of polymeric materials by a method such as a solvent process such as spin coating, dip coating, doctor blading, screen printing, inkjet printing, Layer.

As the anode material, a material having a large work function is preferably used so that hole injection can be smoothly conducted into the organic material layer. Specific examples of the cathode 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), 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 poly (3-methyl compounds), poly [3,4- (ethylene-1,2-dioxy) compounds] (PEDT), polypyrrole and polyaniline.

The negative electrode material is preferably 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; Layer structure materials such as LiF / Al or LiO ₂ / Al, but are not limited thereto.

As the hole injecting material, it is preferable that the highest occupied molecular orbital (HOMO) of the hole injecting material is between the work function of the anode material and the HOMO of the surrounding organic layer. Specific examples of the hole injecting material include metal porphyrine, oligothiophene, arylamine-based organic materials, hexanitrile hexaazatriphenylene-based organic materials, quinacridone-based organic materials, perylene , An anthraquinone, and a conductive polymer of polyaniline and a poly-compound, but the present invention is not limited thereto.

As the hole transporting material, a material capable of transporting holes from the anode or the hole injecting layer to the light emitting layer and having high mobility to holes is suitable. Specific examples include arylamine-based organic materials, conductive polymers, and block copolymers having a conjugated portion and a non-conjugated portion together, but are not limited thereto.

The light emitting material is preferably a material capable of emitting light in the visible light region by transporting and receiving holes and electrons from the hole transporting layer and the electron transporting layer, respectively, and having good quantum efficiency for fluorescence or phosphorescence. Specific examples include 8-hydroxy-quinoline aluminum complex (Alq ₃ ); Carbazole-based compounds; Dimerized styryl compounds; BAlq; 10-hydroxybenzoquinoline-metal compounds; Compounds of the benzoxazole, benzothiazole and benzimidazole series; Polymers of poly (p-phenylenevinylene) (PPV) series; Spiro compounds; Polyfluorene, rubrene, and the like, but are not limited thereto.

As the electron transporting material, a material capable of transferring electrons from the cathode well into the light emitting layer, which is suitable for electrons, is suitable. Specific examples include an Al complex of 8-hydroxyquinoline; Complexes containing Alq ₃ ; Organic radical compounds; Hydroxyflavone-metal complexes, and the like, but are not limited thereto.

The organic light emitting device according to the present invention may be a front emission type, a back emission type, or a both-sided emission type, depending on the material used.

The compound according to the present invention may act on a principle similar to that applied to organic light emitting devices in organic electronic devices including organic solar cells, organic photoconductors, organic transistors and the like.

Accordingly, the organic electronic device may be selected from the group consisting of an organic light emitting device, an organic phosphor device, an organic solar cell, an organic photoconductor (OPC), and an organic transistor.

Hereinafter, preferred embodiments of the present invention will be described in order to facilitate understanding of the present invention. However, the following examples are intended to illustrate the invention and are not intended to limit the scope of the invention.

< Example >

< Manufacturing example  1> Synthesis of Compound of Formula 1-A

2-Aminobenzophenone (9.86 g, 50 mmol) and 2-acetyl-6-bromopyridine (10 g, 50 mmol) were dissolved in acetic acid (50 ml), sulfuric acid (5 ml) was added and the mixture was heated with stirring for 18 hours. After completion of the reaction, the temperature was lowered to room temperature, and ammonia water and ice water were added thereto and stirred. The resulting solid was filtered and dried to obtain Compound 1-A (16.5 g, yield 91%; MS: [M + H] ⁺ = 362).

< Manufacturing example  2> Synthesis of Compound of Formula 1-B

1) Synthesis of Compound A

Except that 2-amino-5-chlorobenzophenone instead of 2-aminobenzophenone and 2-acetylpyridine instead of 2-acetyl-6-bromopyridine were used in the synthesis of the compound of the formula 1-A of Preparation Example 1 (15.5 g, yield 85%; MS: [M + H] ⁺ = 362) was prepared in the same manner as the compound of the formula 1-A.

2) Synthesis of Compound 1-B

To the compound A (10 g, 30 mmol), bis (pinacolato) diboron (14 g, 60 mmol) and potassium acetate (15 g, 130 mmol) were suspended in dioxane (300 mL). Pd (dba) ₂ (1.2 g, 3 mol%) and PCy3 (2.5 g, 6 mol%) were added to the suspension. The mixture was stirred at reflux for about 8 hours and cooled to room temperature. The mixture was diluted with water (100 mL) and extracted with dichloromethane (3 x 50 mL). The organic extracts were dried over magnesium sulfate and filtered. The filtrate was concentrated under reduced pressure and recrystallized from ethyl ether and hexane to obtain the compound of the formula 1-B (11 g, 75%; MS: [M + H] ⁺ = 409).

< Manufacturing example  3> Synthesis of Compound of Formula 1-C

1) Synthesis of Compound A

4-Bromo-benzaldehyde (8.3 g, 45 mmol) was dispersed in 10 ml of nitrobenzene and then N-phenyl-1,2-phenylenediamine (8.3 g, 45 mmol ) Was added and heated at 180 [deg.] C for 6 hours. After cooling to room temperature, the nitrobenzene was removed by distillation under reduced pressure, and the resulting solid was filtered, washed with ethyl ether and vacuum dried to obtain Compound A (9.4 g, yield 60%; MS: [M] = 349) .

2) Synthesis of Compound 1-C

In the same manner as in the synthesis of the compound of the formula 1-B of Preparation Example 2, the compound of the formula 1-C was prepared (8.5 g, yield 70%; MS: [M + H] ⁺ = 409).

< Manufacturing example  4> Synthesis of Compound of Formula 1-D

[1-D]

Carbazole (3.3g, 20mmol), 1- bromo-4-iodobenzene (3.0mL, 24mmol), potassium carbonate _{(K 2 CO 3, 5.6g,} 40mmol), copper iodide (CuI, 1.9g, 1.0mmol) And 50 mL of xylene were refluxed under a nitrogen atmosphere. After cooling to room temperature, the product was extracted with ethyl acetate, the water was removed with anhydrous magnesium sulfate, and the solvent was removed under reduced pressure. (Yield: 25%; MS: [M + H] &lt; ⁺ &gt; = 80%) as a white solid. The title compound was obtained as a white solid (1.6 g, yield: 25%) after removal of the solvent under reduced pressure and drying in vacuo using a hexane solvent. 322).

< Manufacturing example  5> Synthesis of Compound of Formula 1-E

1) Synthesis of Compound A

Phenylboronic acid (12.2 g, 100 mmol) and 1-bromo-3,5-dichlorobenzene (22.5 g, 100 mmol) were dissolved in THF (200 ml), potassium phosphate (K ₃ PO ₄ , potassium phosphate tribasic , 500 mmol) were added to the reaction solution together with water, followed by heating and stirring in a nitrogen state for about one hour. After stirring for one hour, tetrakis (triphenylphosphine) palladium (1.09 g, 0.95 mmol) was added and the mixture was heated with stirring for 18 hours. After completion of the reaction, the temperature was lowered to room temperature and the resulting solid was filtered. The filtered solid was dissolved in chloroform and dried over anhydrous magnesium sulfate. The mixture was distilled off under reduced pressure and recrystallized from tetrahydrofuran and ethanol to obtain Compound A (13 g, 60%).

2) Synthesis of Compound 1-E

Bis (pinacolato) diboron (23 g, 90 mmol) and potassium acetate (15 g, 130 mmol) were suspended in dioxane (300 mL) to compound A (6.6 g, 30 mmol). Pd (dba) ₂ (1.2 g, 3 mol%) and PCy3 (2.5 g, 6 mol%) were added to the suspension. The mixture was stirred at reflux for about 8 hours and cooled to room temperature. The mixture was diluted with water (100 mL) and extracted with dichloromethane (3 x 50 mL). The organic extracts were dried over magnesium sulfate and filtered. The filtrate was concentrated under reduced pressure and recrystallized from ethyl ether and hexane to obtain the compound of the above formula 1-E (11 g, 75%; MS: [M + H] ⁺ = 407).

< Manufacturing example  6> Synthesis of Compound of Formula 1-F

In the same manner as in the synthesis of the compound of the above formula (1-E) except for using 4-cyanophenylboronic acid instead of phenylboronic acid in the synthesis of the compound of the formula (1-E) F (15.5 g, 70% yield; MS: [M + H] &lt; ⁺ &gt; = 432).

< Example  1> Synthesis of the compound of the following formula 1-5

The compound 1-A (3.6 g, 10 mmol) of Preparation Example 1 and 9- (2-naphthyl) anthracene-10-phenylboronpinacolate (5.1 g, 10 mmol) were dissolved in 120 ml of tetrahydrofuran, Aqueous solution was added, tetrakis (triphenylphosphine) palladium (0.32 g, 0.27 mmol) was added, and the mixture was heated with stirring for 18 hours. After completion of the reaction, the temperature was lowered to room temperature and the resulting solid was filtered. The filtered solid was dissolved in chloroform, dried over anhydrous magnesium sulfate, and then distilled under reduced pressure. The residue was recrystallized from tetrahydrofuran and ethanol to obtain the compound of Formula 1-5 (5.3 g, yield 80%; MS: [M + H] ⁺ = 661) .

< Example  2> Synthesis of Compound of Formula 1-12

The compound of the above formula (1-5) was synthesized in the same manner as in the synthesis of the compound of the formula (1-5) in Example 1, except that the compound 1-C was used in place of the 9- (2-naphthyl) anthracene- (15.5 g, yield 80%; MS: [M + H] ⁺ = 551).

< Example  3> Synthesis of Compound of Formula 1-22

Except that Compound 1-B was used instead of Compound 1-A and Compound 1-D was used instead of 9- (2-naphthyl) anthracene-10-phenylboronpinacolate in the synthesis of the compound of Formula 1-5 in Example 1 (4.4 g, yield 45%; MS: [M + H] &lt; ⁺ &gt; = 524) in the same manner as in the synthesis of the compound of formula 1-5 above.

< Example  4> Synthesis of Compound of Formula 2-3

Compound 1-A (7.2 g, 20 mmol) of Preparation Example 1 and Compound 1-F (4.3 g, 10 mmol) of Preparation Example 6 were dissolved in 120 ml of tetrahydrofuran, 2M potassium carbonate aqueous solution was added, Phenylphosphine) palladium (0.6 g, 0.5 mmol) was added thereto, and the mixture was heated with stirring for 18 hours. After completion of the reaction, the temperature was lowered to room temperature and the resulting solid was filtered. The filtrated solid was dissolved in chloroform, dried over anhydrous magnesium sulfate, and then distilled under reduced pressure. The residue was recrystallized from tetrahydrofuran and ethanol to obtain the compound of Formula 2-3 (3.7 g, yield 50%; MS: [M + H] ⁺ = 740) .

< Example  5> Synthesis of Compound of Formula 2-14 below

In the synthesis of the compound of Formula 2-3 in Example 4, the compound of Formula 2-3 was used instead of the compound 1-A, except that 2,7-dibromonaphthalene was used instead of the compound 1-B and the compound 1-F. The compound of Formula 2-14 was prepared (4.1 g, yield 60%; MS: [M + H] ⁺ = 689) in the same manner as in the synthesis of the compound.

< Experimental Example  1>

The glass substrate coated with ITO (indium tin oxide) film with a thickness of 1,500 Å was immersed in distilled water containing detergent and washed with ultrasonic waves. As a detergent, a product of Fischer Co. was used. Distilled water, which was filtered by a filter of Millipore Co., was used as distilled water. The ITO was washed for 30 minutes and then washed twice with distilled water and ultrasonically cleaned for 10 minutes. After the distilled water was washed, it was ultrasonically washed with a solvent of isopropyl alcohol, acetone, and methanol, dried, and then transported to a plasma cleaner. The substrate was cleaned using oxygen plasma for 5 minutes, and then the substrate was transported by a vacuum evaporator.

Hexanitrile hexaazatriphenylene was thermally vacuum deposited on the prepared ITO transparent electrode to a thickness of 500 Å to form a hole injection layer. NPB (400 Å), which is a hole transporting material, was vacuum deposited thereon, and a host H1 and a dopant D1 compound were vacuum deposited as a light emitting layer to a thickness of 300 Å.

The compound of Formula 1-5 prepared in Example 1 was vacuum deposited on the light emitting layer to a thickness of 200 Å to form an electron injection and transport layer. Lithium fluoride (LiF) 12 Å thick and aluminum 2,000 Å thick were sequentially deposited on the electron injection and transport layer to form a cathode. In the above process, the deposition rate of the organic material was maintained at 1 Å / sec, the deposition rate of lithium fluoride was 0.2 Å / sec, and the deposition rate of aluminum was 3 to 7 Å / sec.

< Experimental Example  2>

The same experiment was conducted except that the electron transport layer in Experimental Example 1 was the compound of Formula 1-12 prepared in Example 2. [

< Experimental Example  3>

The same experiment was carried out except that the electron transport layer in Experimental Example 1 was the compound of Formula 2-3 prepared in Example 4 above.

< Experimental Example  4>

The same experiment was carried out except that the electron transport layer in Experimental Example 1 was the compound of Formula 2-14 prepared in Example 5 above.

< Comparative Example  1>

The same experiment was performed except that Alq ₃ was used as the electron transporting layer in Experimental Example 1 above.

[Table 3]

From the results shown in Table 3, it was found that when the organic compound layer of the organic electronic device is formed using the compound of Formula 1 according to the present invention, the organic EL device exhibits excellent characteristics in terms of efficiency, driving voltage drop and stability.

Claims (13)

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

In Formula 1,
L ₁ and L ₂ are the same or different and are each independently a direct bond; Or a substituted or unsubstituted C ₆ to C ₃₀ arylene group,
Ar ₁ and Ar ₂ are the same or different and each independently represents hydrogen, deuterium, a substituted or unsubstituted C ₁ to C ₂₀ alkyl group, a substituted or unsubstituted C ₂ to C ₂₀ alkenyl group, of C ₃ ~ C ₂₀ cycloalkyl group, a substituted or unsubstituted C ₅ ~ C ₃₀ cycloalkenyl group, a substituted or unsubstituted C ₁ ~ C ₃₀ alkoxy group, a substituted or unsubstituted C ₆ ~ C ₂₀ rings of A substituted or unsubstituted C ₁ to C ₃₀ alkylthio group, a substituted or unsubstituted C ₆ to C ₂₀ arylthioxy group, a substituted or unsubstituted C ₁ to C ₃₀ alkylamine group, a substituted Or an unsubstituted C ₆ -C ₃₀ arylamine group, a substituted or unsubstituted C ₆ -C ₃₀ aryl group, a C ₃ -C ₃₀ heteroaryl having a substituted or unsubstituted heteroatom, O, N or S A substituted or unsubstituted silyl group, a carbonyl group, a phosphoryl group, an amino group, a nitrile group, a nitro group, Which may form a condensed ring of an aliphatic, aromatic, aliphatic hetero or aromatic hetero with an adjacent group selected from the group consisting of a hydroxyl group, a halogen group, an amide group and an ester group,
n is an integer of 1 to 3, and when n is 2 or more, the structures in parentheses are the same or different from each other,
a and b are each independently an integer of 0 to 3, c is an integer of 0 to 5,
X ₁ , X _2, and X ₃ are the same or different from each other, and each independently hydrogen; A substituted or unsubstituted C ₁ to C ₂₄ alkyl group; A substituted or unsubstituted C ₂ -C ₂₄ alkenyl group; A substituted or unsubstituted C ₂ -C ₂₄ alkynyl group; A substituted or unsubstituted C ₃ -C ₂₀ cycloalkyl group; A substituted or unsubstituted C ₃ -C ₂₀ heterocycloalkyl group; A substituted or unsubstituted C ₆ -C ₅₀ aryl group; A substituted or unsubstituted C ₃ -C ₅₀ heteroaryl group; A substituted or unsubstituted fluorenyl group; A substituted or unsubstituted carbazolyl group; And a substituted or unsubstituted arylamine group,
(1) is represented by any one of formulas (2) to (5)
(2)

(3)

[Chemical Formula 4]

[Chemical Formula 5]

In the above Chemical Formulas 2 to 5,
Wherein L ₁ , L ₂ , Ar ₁ , Ar ₂ , X ₁ , X ₂ , X ₃ , a, b and c are as defined in the above formula
L ₃ and L ₄ are the same as defined for L ₁ and L ₂ in the formula 1, Ar ₃ and Ar ₄ are the same as defined for Ar ₁ and Ar ₂ in the formula 1, and X ₄ , X ₅ , X ₆ , X ₇ , X ₈ and X ₉ are independently the same as defined for X ₁ to X _{3 in} the above formula (1)
d, e, g and i are each independently an integer of 0 to 3, f and h are each independently an integer of 0 to 5,
The "substituted or unsubstituted" may be substituted with at least one substituent selected from the group consisting of an alkyl group, a silyl group, an aryl group, a heteroaryl group, a carbazole group, a fluorenyl group substituted with an aryl group, and a nitrile group, It does not have. 2. The compound of claim 1, wherein the heteroaryl group is selected from the group consisting of:

[2] The compound according to claim 1, wherein L ₁ and L ₂ in Formula 1 are each independently a direct bond; A phenylene group, a biphenylene group, a naphthalenylene group, a binaphthalene group, an anthracenylene group, a fluorenylene group, a klychenylene group and a phenanthrenylene group. The compound of claim 1, wherein Ar ₁ and Ar ₂ in Formula 1 are each independently selected from the group consisting of hydrogen, a substituted or unsubstituted C ₆ -C ₃₀ aryl group, a substituted or unsubstituted C ₃ ~ C ₃₀ selected from the heteroaryl group, a substituted or unsubstituted boron group, a substituted or unsubstituted silane group, a carbonyl group, and phosphine group consisting poril ring, so, where "substituted or unsubstituted" is an alkyl group, a silyl group, an aryl A substituted or unsubstituted fluorenyl group and a nitrile group substituted with an aryl group, a heteroaryl group, a carbazole group, an aryl group, or has no substituent group. 2. The compound according to claim 1, wherein X ₁ , X _2, and X ₃ in Formula 1 are each independently hydrogen; A substituted or unsubstituted C ₁ to C ₂₄ alkyl group; A substituted or unsubstituted C ₆ -C ₅₀ aryl group; And a substituted or unsubstituted C ₃ to C ₅₀ heteroaryl group, wherein the "substituted or unsubstituted" is a group selected from the group consisting of an alkyl group, a silyl group, an aryl group, a heteroaryl group, a carbazole group, Substituted fluorenyl group and nitrile group, or does not have any substituent (s). delete The compound according to claim 1, wherein the compound represented by the formula (1) is selected from the group consisting of the compounds shown in the following Table 1:
[Table 1]

The compound according to claim 1, wherein the compound represented by Formula 1 is selected from the group consisting of the compounds shown in Table 2 below:
[Table 2]

1. An organic electronic device comprising a first electrode, a second electrode, and at least one organic material layer disposed between the first electrode and the second electrode, wherein at least one of the organic material layers is formed of any one of claims 1 to 5, 7 and 8 1. An organic electronic device characterized by comprising a compound represented by the general formula (1) described in claim 1. The organic electroluminescent device according to claim 9, wherein the organic material layer includes at least one of a hole injection layer, a hole transport layer, and a layer simultaneously injecting holes and transporting holes, wherein at least one of the layers includes a compound represented by the formula An organic electronic device characterized by. [Claim 11] The organic electronic device according to claim 9, wherein the organic layer includes a light emitting layer, and the light emitting layer comprises a compound represented by the general formula (1). [12] The organic EL device according to claim 9, wherein the organic material layer includes at least one of an electron transport layer, an electron injection layer, and a layer simultaneously carrying out electron transport and electron injection, wherein at least one of the layers includes a compound represented by the general formula An organic electronic device characterized by. The organic electronic device according to claim 9, wherein the organic electronic device is selected from the group consisting of an organic light emitting device, an organic phosphor device, an organic solar cell, an organic photoconductor (OPC), and an organic transistor.

Images