KR101474796B1 - Compound for organic optoelectronic device, organic light emitting diode including the same and display including the organic light emitting diode - Google Patents

Abstract

The present invention relates to a compound for an organic optoelectronic device, an organic light emitting device including the same, and a display device including the organic light emitting device. The present invention provides a compound for an organic optoelectronic device represented by the following Chemical Formula 1 and having excellent electrochemical and thermal stability, And an organic light emitting device having a high luminous efficiency even at a low driving voltage can be manufactured.
[Chemical Formula 1]

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an organic electroluminescent device,

The present invention relates to a compound for an organic optoelectronic device capable of providing an organic optoelectronic device excellent in lifetime, efficiency, electrochemical stability and thermal stability, an organic light emitting device including the organic optoelectronic device, and a display device including the organic light emitting device.

An organic optoelectronic device refers to a device that requires charge exchange between an electrode and an organic material using holes or electrons.

Organic optoelectronic devices 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 Type electronic device.

The second type is an electronic device in which holes or electrons are injected into an organic semiconductor forming an interface with an electrode by applying a voltage or current to two or more electrodes and operated by injected electrons and holes.

Examples of organic optoelectronic devices include organic optoelectronic devices, organic light-emitting devices, organic solar cells, organic photo conductor drums, and organic transistors, all of which are used for the injection or transport of holes, An injection or transport material, or a luminescent material.

In particular, organic light emitting diodes (OLEDs) have been attracting attention in recent years as the demand for flat panel displays increases. In general, organic light emission phenomenon refers to a phenomenon in which an organic material is used to convert electric energy into light energy.

Such an organic light emitting device is a device that converts electric energy into light by applying an electric current to an organic light emitting material, and is usually composed of a structure in which a functional organic layer is interposed between an anode and a cathode. Here, in order to enhance the efficiency and stability of the organic light emitting device, the organic material layer may have a multi-layered 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 the two electrodes in the structure of such an organic light emitting device, holes are injected into the anode and electrons are injected into the organic layer through the cathode, and injected holes and electrons are recombined Energy excitons are formed. At this time, the exciton formed again moves to the ground state, and light having a specific wavelength is generated.

In recent years, it is known that not only fluorescent light emitting materials but also phosphorescent emitting materials can be used as light emitting materials for organic light emitting devices. Such phosphorescence emission is a phenomenon in which electrons are transferred from a ground state to an excited state, The mechanism consists of a non-luminescent transition of a singlet exciton to a triplet exciton through intersystem crossing, followed by a luminescence of the triplet exciton transitioning to the ground state.

As described above, 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.

Further, the light emitting material can be classified into blue, green, and red light emitting materials and yellow and orange light emitting materials required to realize better natural color depending on the luminescent color.

On the other hand, when only one material is used as a light emitting material, there arises a problem that the maximum light emission wavelength shifts to a long wavelength due to intermolecular interaction, the color purity decreases, or the efficiency of the device decreases due to the light emission attenuating effect. A host / dopant system can be used as a light emitting material in order to increase the light emitting efficiency and stability through the light emitting layer.

In order for the organic luminescent device to fully exhibit the above-described excellent characteristics, a host material and / or a dopant such as a hole injecting material, a hole transporting material, a luminescent material, an electron transporting material, an electron injecting material, The organic material layer for organic light emitting devices has not been sufficiently developed yet. Therefore, development of new materials has been continuously required. The necessity of developing such a material is the same in other organic optoelectronic devices described above.

In addition, the low-molecular organic light-emitting device has good efficiency and long life performance because it is manufactured in the form of a thin film by a vacuum deposition method. The polymer organic light-emitting device uses an inkjet or spin coating method, There is an advantage that the large area is advantageous.

Low molecular organic light emitting devices and polymer organic light emitting devices are attracting attention as next generation displays because they have advantages such as self-emission, fast response, wide viewing angle, ultra-thin, high image quality, durability and wide driving temperature range. Compared to conventional liquid crystal displays (LCDs), it is self-luminous and has good visibility even when dark or external light enters. It can reduce thickness and weight to 1/3 of that of LCD without backlight.

In addition, the response speed is 1000 times faster than that of LCD, so it is possible to realize perfect video without residual image. Therefore, it is anticipated that it will be seen as an optimal display in accordance with the multimedia age in recent years. Based on these advantages, after the first development in the late 1980s, the efficiency has been rapidly increased to 80 times and the life span of 100 times. And organic light-emitting device panels have been announced, and the size of the organic light-emitting device panel is rapidly increasing.

In order to increase the size, it is necessary to increase the luminous efficiency and the lifetime of the device. At this time, the luminous efficiency of the device should be such that the holes and electrons in the light emitting layer are smoothly coupled. However, since the electron mobility of an organic material is generally slower than the hole mobility, in order to efficiently bond holes and electrons in the light-emitting layer, an efficient electron transport layer is used to increase electron injection and mobility from the cathode, It should be able to block the movement of holes.

Further, in order to improve the lifetime, the material should be prevented from crystallizing due to joule heat generated when the device is driven. Therefore, it is necessary to develop organic compounds having excellent electron injection and mobility and high electrochemical stability.

A hole injecting and transporting role, or an electron injecting and transporting function, and can function as a light emitting host together with an appropriate dopant.

Life, efficiency, driving voltage, electrochemical stability, and thermal stability, and a display device including the organic light emitting device.

In one embodiment of the present invention, there is provided a compound for an organic optoelectronic device represented by the following formula (1).

[Chemical Formula 1]

Wherein Ar ¹ is a substituted or unsubstituted C2 to C30 heteroaryl group, Ar ² is a substituted or unsubstituted pyridinyl group, a substituted or unsubstituted pyrimidinyl group or a substituted or unsubstituted triazinyl group , R ¹ and R ² are independently hydrogen, deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C2 to C30 heteroaryl group, or combinations thereof , L is a single bond, a substituted or unsubstituted C2 to C10 alkenylene group, a substituted or unsubstituted C2 to C10 alkynylene group, a substituted or unsubstituted C6 to C30 arylene group, a substituted or unsubstituted C2 to C30 hetero N is 0 or 3, Ar ³ is hydrogen, deuterium, a substituted or unsubstituted C6 to C30 aryl group or a substituted or unsubstituted C2 to C30 heteroaryl group.

The compound for organic optoelectronic devices represented by Formula 1 may be represented by Formula 2 below.

(2)

Wherein Ar 1 is a substituted or unsubstituted C 2 to C 30 heteroaryl group, Ar ² is a substituted or unsubstituted pyridinyl group, a substituted or unsubstituted pyrimidinyl group or a substituted or unsubstituted triazinyl group, R ¹ and R ² are independently hydrogen, deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C2 to C30 heteroaryl group, or combinations thereof, L is a single bond, a substituted or unsubstituted C2 to C10 alkenylene group, a substituted or unsubstituted C2 to C10 alkynylene group, a substituted or unsubstituted C6 to C30 arylene group, a substituted or unsubstituted C2 to C30 heteroaryl N is 0 or 3, Ar ³ is hydrogen, deuterium, a substituted or unsubstituted C6 to C30 aryl group or a substituted or unsubstituted C2 to C30 heteroaryl group.

Ar ³ represents a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted triphenyl group, a substituted or unsubstituted carbazolyl group, a substituted or unsubstituted dibenzothiophenyl group, a substituted or unsubstituted Dibenzofuranyl groups, or combinations thereof.

The Ar ² may be selected from any one of the following formulas (S-1) to (S-5).

[Formula S-1] [Formula S-2]

[Formula S-3] [Formula S-4]

[Formula S-5]

In the formulas S-3 to S-5, R ¹ to R ⁴ are independently hydrogen, deuterium, a C1 to C30 alkyl group, a C6 to C30 aryl group Any one of R ¹ to R ⁴ in the formulas S-3 and S-4 represents a bonding position, and any one of R ¹ to R ³ in the formula (S-5) .

The Ar ¹ may be selected from any one of the following formulas (S-1) to (S-5).

[Formula S-1] [Formula S-2]

[Formula S-3] [Formula S-4]

[Formula S-5]

In the formulas S-3 to S-5, R ¹ to R ⁴ are independently hydrogen, deuterium, a C1 to C30 alkyl group, a C6 to C30 aryl group Any one of R ¹ to R ⁴ in the formulas S-3 and S-4 represents a bonding position, and any one of R ¹ to R ³ in the formula (S-5) .

The compound for organic optoelectronic devices represented by Formula 1 may be represented by Formula 3 below.

(3)

In Formula 3, Ar ¹ is a substituted or unsubstituted C2 to C30 heteroaryl group, Ar ² is a substituted or unsubstituted pyridinyl group, a substituted or unsubstituted pyrimidinyl group, or a substituted or unsubstituted triazinyl group , R ¹ to R ⁵ are independently hydrogen, deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C2 to C30 heteroaryl group, or combinations thereof , L is a single bond, a substituted or unsubstituted C2 to C10 alkenylene group, a substituted or unsubstituted C2 to C10 alkynylene group, a substituted or unsubstituted C6 to C30 arylene group, a substituted or unsubstituted C2 to C30 hetero N is 0 or 3, X is -NR'-, -S- or -O-, and R 'is hydrogen, deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted Or an unsubstituted C6 to C30 aryl group, A C2 to C30 hetero aryl group, or a combination thereof.

The compound for organic optoelectronic devices represented by Formula 1 may be represented by Formula 4 below.

[Chemical Formula 4]

In Formula 4, Ar ¹ is a substituted or unsubstituted C2 to C30 heteroaryl group, Ar ² is a substituted or unsubstituted pyridinyl group, a substituted or unsubstituted pyrimidinyl group, or a substituted or unsubstituted triazinyl group , R ¹ to R ⁵ are independently hydrogen, deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C2 to C30 heteroaryl group, or combinations thereof , L is a single bond, a substituted or unsubstituted C2 to C10 alkenylene group, a substituted or unsubstituted C2 to C10 alkynylene group, a substituted or unsubstituted C6 to C30 arylene group, a substituted or unsubstituted C2 to C30 hetero N is 0 or 3, Ar ⁴ is hydrogen, deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C2 to C30 aryl group, C30 Heteroa Lt; / RTI > or a combination thereof.

The compound for organic optoelectronic devices represented by Formula 1 may be represented by Formula 5 below.

[Chemical Formula 5]

In Formula 5, Ar ¹ is a substituted or unsubstituted C2 to C30 heteroaryl group, Ar ² is a substituted or unsubstituted pyridinyl group, a substituted or unsubstituted pyrimidinyl group, or a substituted or unsubstituted triazinyl group , R ¹ to R ⁵ are independently hydrogen, deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C2 to C30 heteroaryl group, or combinations thereof , L is a single bond, a substituted or unsubstituted C2 to C10 alkenylene group, a substituted or unsubstituted C2 to C10 alkynylene group, a substituted or unsubstituted C6 to C30 arylene group, a substituted or unsubstituted C2 to C30 hetero N is 0 or 3, Ar ⁴ is hydrogen, deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C2 to C30 aryl group, C30 Heteroa Lt; / RTI > or a combination thereof.

The compound for organic optoelectronic devices represented by Formula 1 may be represented by the following Formula (ad-1).

[Formula ad-1]

In the above ad-1, X ¹ to X ³ are independently of each other -CR'- or N, and R 'is hydrogen, deuterium, substituted or unsubstituted C1 to C10 alkyl group, substituted or unsubstituted C6 to C30 An aryl group, a substituted or unsubstituted C2 to C30 heteroaryl group or a combination thereof, at least one of X ¹ to X ³ is N, and X ⁴ is -O- or -S-.

The compound for organic optoelectronic devices represented by Formula 1 may be represented by the following Formula (ad-2).

[Formula ad-2]

In the above ad-2, X ¹ to X ³ are independently of each other -CR'- or N, and R 'is hydrogen, deuterium, substituted or unsubstituted C1 to C10 alkyl group, substituted or unsubstituted C6 to C30 An aryl group, a substituted or unsubstituted C2 to C30 heteroaryl group or a combination thereof, at least one of X ¹ to X ³ is N, and X ⁴ is -O- or -S-.

The compound for organic optoelectronic devices represented by Formula 1 may be represented by the following Formula (ad-3).

[Formula ad-3]

In the above ad-3, X ¹ to X ³ are independently of each other -CR'- or N, and R 'is hydrogen, deuterium, substituted or unsubstituted C1 to C10 alkyl group, substituted or unsubstituted C6 to C30 An aryl group, a substituted or unsubstituted C2 to C30 heteroaryl group or a combination thereof, at least one of X ¹ to X ³ is N, and X ⁴ is -O- or -S-.

The compound for an organic optoelectronic device may be represented by the following formulas A-1 to A-27.

[Formula A-1] [Formula A-2] [Formula A-3]

[Chemical formula A-4] [Chemical formula A-5] [Chemical formula A-6]

[Chemical Formula A-7] [Chemical Formula A-8] [Chemical Formula A-9]

[A-10] [Chemical formula A-11] [Chemical formula A-12]

[Chemical formula A-13] [Chemical formula A-14] [Chemical formula A-15]

[Chemical Formula A-16] [Chemical Formula A-17] [Chemical Formula A-18]

[Chemical Formula A-19] [Chemical Formula A-20] [Chemical Formula A-21]

[Chemical Formula A-22] [Chemical Formula A-22] [Chemical Formula A-24]

[Chemical Formula A-25] [Chemical Formula A-26] [Chemical Formula A-27]

The compound for an organic optoelectronic device may be represented by the following formulas (B-1) to (B-126).

[Formula B-1] [Formula B-2] [Formula B-3]

[Formula B-4] [Formula B-5] [Formula B-6]

[Formula B-7] [Formula B-8] [Formula B-9]

[Formula B-10] [Formula B-11] [Formula B-12]

[Formula B-13] [Formula B-14] [Formula B-15]

[Formula B-16] [Formula B-17] [Formula B-18]

[Formula B-19] [Formula B-20] [Formula B-21]

[Formula B-22] [Formula B-23] [Formula B-24]

[Formula B-25] [Formula B-26] [Formula B-27]

[Formula B-28] [Formula B-29] [Formula B-30]

[Formula B-31] [Formula B-32] [Formula B-33]

[Formula B-34] [Formula B-35] [Formula B-36]

[Formula B-37] [Formula B-38] [Formula B-39]

[Formula B-40] [Formula B-41] [Formula B-42]

[Formula B-43] [Formula B-44] [Formula B-45]

[Formula B-46] [Formula B-47] [Formula B-48]

[Formula B-49] [Formula B-50] [Formula B-51]

[Formula B-52] [Formula B-53] [Formula B-54]

[Chemical Formula B-55] Chemical Formula B-56 Chemical Formula B-57 Chemical Formula B-

[Chemical Formula B-59] Chemical Formula B-60 Chemical Formula B-61 Chemical Formula B-

[Formula B-63] [Formula B-64] [Formula B-65] [Formula B-66]

[Formula B-67] [Formula B-68] [Formula B-69] [Formula B-70]

[Formula B-71] [Formula B-72] [Formula B-73] [Formula B-74]

[Formula B-75] [Formula B-76] [Formula B-77] [Formula B-78]

[Formula B-79] [Formula B-80] [Formula B-81] [Formula B-82]

[Formula B-83] [Formula B-84] [Formula B-85] [Formula B-86]

[Formula B-87] [Formula B-88] [Formula B-89] [Formula B-90]

[Formula B-91] [Formula B-92] [Formula B-93] [Formula B-94]

[Formula B-95] [Formula B-96] [Formula B-97] [Formula B-98]

[Formula B-101] [Formula B-102] [Formula B-101]

[Formula B-103] [Formula B-104] [Formula B-105] [Formula B-106]

[Formula B-107] [Formula B-108] [Formula B-109] [Formula B-110]

[Formula B-111] [Formula B-112] [Formula B-113] [Formula B-114]

[Chemical Formula B-115] [Chemical Formula B-116] [Chemical Formula B-117] [Chemical Formula B-118]

[Chemical Formula B-119] Chemical Formula B-120 Chemical Formula B-121 Chemical Formula B-

[Formula B-124] [Formula B-125] [Formula B-126]

The compound for organic optoelectronic devices may be represented by the following formulas C-1 to C-20.

[C-1] [C-2] [C-3]

[C-4] [C-5]

[C-6] [C-7] [C-8]

[C-9] [C-10]

[C-11] [C-12] [C-13]

[C-14] [C-15]

[C-16] [C-17] [C-18]

[C-19] [C-20]

The compound for an organic optoelectronic device may have a triplet excitation energy (T1) of 2.0 eV or more.

The organic optoelectronic device may be selected from the group consisting of an organic photoelectric device, an organic light emitting device, an organic solar cell, an organic transistor, an organic photoreceptor drum, and an organic memory device.

According to another embodiment of the present invention, there is provided an organic light emitting device comprising a cathode, a cathode, and at least one organic thin film layer interposed between the anode and the cathode, wherein at least one of the organic thin film layers is formed of the organic electroluminescent element Wherein the organic compound is an organic compound.

The organic thin film layer may be selected from the group consisting of a light emitting layer, a hole transporting layer, a hole injecting layer, an electron transporting layer, an electron injecting layer, a hole blocking layer, and combinations thereof.

The compound for an organic optoelectronic device may be contained in a hole transport layer or a hole injection layer.

The compound for an organic optoelectronic device may be included in the light emitting layer.

The compound for an organic optoelectronic device can be used as a phosphorescent or fluorescent host material in a light emitting layer.

In another embodiment of the present invention, there is provided a display device including the organic light emitting element described above.

A compound having high hole or electron transporting property, film stability, thermal stability and high triplet excitation energy can be provided.

Such a compound can be used as a hole injecting / transporting material, a host material, or an electron injecting / transporting material of a light emitting layer. The organic optoelectronic device using the organic electroluminescent device has excellent electrochemical and thermal stability, and has excellent lifetime characteristics and high luminous efficiency even at low driving voltage.

1 to 5 are cross-sectional views illustrating various embodiments of an organic light emitting device that can be manufactured using a compound for an organic optoelectronic device according to an embodiment of the present invention.

Hereinafter, embodiments of the present invention will be described in detail. However, it should be understood that the present invention is not limited thereto, and the present invention is only defined by the scope of the following claims.

As used herein, unless otherwise defined, at least one of the substituents or at least one hydrogen in the compound is substituted with one or more substituents selected from the group consisting of deuterium, a halogen group, a hydroxy group, an amino group, a substituted or unsubstituted C1 to C30 amine group, a nitro group, C1 to C10 alkyl groups such as a C3 to C40 silyl group, a C1 to C30 alkyl group, a C1 to C10 alkylsilyl group, a C3 to C30 cycloalkyl group, a C6 to C30 aryl group, a C1 to C20 alkoxy group, a fluoro group, A trifluoroalkyl group or a cyano group.

A substituted or unsubstituted C1 to C20 amine group, a nitro group, a substituted or unsubstituted C3 to C40 silyl group, a C1 to C30 alkyl group, a C1 to C10 alkylsilyl group, a C3 to C10 alkylsulfinyl group, A C1 to C10 trifluoroalkyl group such as a C30 cycloalkyl group, a C6 to C30 aryl group, a C1 to C20 alkoxy group, a fluoro group or a trifluoromethyl group, or a cyano group may be fused together to form a ring .

Means one to three heteroatoms selected from the group consisting of N, O, S and P in one functional group, and the remainder is carbon, unless otherwise defined.

In the present specification, the term "combination thereof" means that two or more substituents are bonded to each other via a linking group or two or more substituents are condensed and bonded.

As used herein, the term "alkyl group" means an aliphatic hydrocarbon group, unless otherwise defined. The alkyl group may be a "saturated alkyl group" which does not contain any double or triple bonds. The alkyl group may be branched, straight-chain or cyclic.

"Alkynylene group" means a functional group in which at least two carbon atoms are composed of at least one carbon-carbon double bond, and "alkynylene group" means that at least two carbon atoms have at least one carbon- Quot; means a functional group formed by bonding.

The alkyl group may be an alkyl group of C1 to C20. More specifically, the alkyl group may be a C1 to C10 alkyl group or a C1 to C6 alkyl group.

For example, the C1 to C4 alkyl groups may have 1 to 4 carbon atoms in the alkyl chain, i.e., the alkyl chain may be optionally substituted with one or more substituents selected from the group consisting of methyl, ethyl, propyl, iso-propyl, n-butyl, Indicating that they are selected from the group.

Specific examples of the alkyl group include a methyl group, ethyl group, propyl group, isopropyl group, butyl group, isobutyl group, t-butyl group, pentyl group, hexyl group, cyclopropyl group, cyclobutyl group, cyclopentyl group, And the like.

"Aromatic group" means a functional group in which all elements of the ring-form functional group have p-orbital, and these p-orbital forms a conjugation. Specific examples thereof include an aryl group and a heteroaryl group.

An "aryl group" includes a monocyclic or fused ring polycyclic (i. E., A ring that divides adjacent pairs of carbon atoms) functional groups.

"Heteroaryl group" means that the aryl group contains 1 to 3 heteroatoms selected from the group consisting of N, O, S and P, and the remainder is carbon. When the heteroaryl group is a fused ring, it may contain 1 to 3 heteroatoms in each ring.

In the present specification, the term "carbazole derivative" means a structure in which the nitrogen atom of the substituted or unsubstituted carbazolyl group is replaced by a hetero atom or carbon other than nitrogen. Specific examples thereof include dibenzofuran (dibenzofuranyl), dibenzothiophene (dibenzothiophenyl), fluorene (fluorenyl), and the like.

In the present specification, the hole property means a property of facilitating the injection into the light emitting layer and the movement in the light emitting layer of the hole formed in the anode due to conduction characteristics along the HOMO level.

Further, the electron characteristic means a property of facilitating the injection of electrons formed in the anode into the luminescent layer and the movement in the luminescent layer due to conduction characteristics along the LUMO level.

The compound for an organic optoelectronic device according to an embodiment of the present invention is a compound in which a substituted or unsubstituted heteroaryl group is bonded to a nitrogen of a substituted or unsubstituted carbazole and a substituted or unsubstituted pyridinyl group, An unsubstituted pyrimidinyl group or a substituted or unsubstituted thiazinyl group.

The substituted or unsubstituted carbazole is a compound having both hole and electron characteristics. More specifically, the hole characteristics may be slightly better than the electron characteristics. However, this can be controlled by the substituent bonded to the carbazole.

The substituted or unsubstituted pyridinyl group, the substituted or unsubstituted pyrimidinyl group, or the substituted or unsubstituted triazinyl group is a substituent having excellent electron characteristics.

The electron and hole properties of the whole compound can be controlled by bonding a substituent having excellent electron characteristics to the carbazole having the hole characteristic and the electron characteristic.

Therefore, the core structure can be used as a light emitting material, a hole injecting material, or a hole transporting material of an organic optoelectronic device. And may be particularly suitable for a light emitting material.

At least one of the substituents bonded to the core may be a substituent having a hole property. Accordingly, the compound may enhance the hole property in the core structure to satisfy the requirements of the light emitting layer. More specifically, it can be used as a host material for a light emitting layer.

In addition, the compound for an organic optoelectronic device may be a compound having various energy bandgaps by introducing various substituents to the substituents substituted in the core portion and the core portion.

By using a compound having an appropriate energy level according to the substituent of the compound in an organic optoelectronic device, the hole transporting ability or the electron transporting ability is enhanced to have an excellent effect in terms of efficiency and driving voltage, and excellent electrochemical and thermal stability. The lifetime characteristics can be improved when the device is driven.

According to an embodiment of the present invention, the compound for an organic optoelectronic device may be a compound for an organic optoelectronic device represented by the following formula (1).

[Chemical Formula 1]

Wherein Ar ¹ is a substituted or unsubstituted C2 to C30 heteroaryl group, Ar ² is a substituted or unsubstituted pyridinyl group, a substituted or unsubstituted pyrimidinyl group, or a substituted or unsubstituted triazinyl group , R ¹ and R ² are independently hydrogen, deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C2 to C30 heteroaryl group, or combinations thereof , L is a single bond, a substituted or unsubstituted C2 to C10 alkenylene group, a substituted or unsubstituted C2 to C10 alkynylene group, a substituted or unsubstituted C6 to C30 arylene group, a substituted or unsubstituted C2 to C30 hetero N is 0 or 3, Ar ³ is hydrogen, deuterium, a substituted or unsubstituted C6 to C30 aryl group or a substituted or unsubstituted C2 to C30 heteroaryl group.

Wherein R ¹ and R ² are independently hydrogen, deuterium, substituted or unsubstituted C1 to C10 alkyl groups, substituted or unsubstituted C6 to C30 aryl groups, substituted or unsubstituted C2 to C30 heteroaryl groups, or combinations thereof .

Due to the substituent, the compound for an organic optoelectronic device may exhibit luminescence, hole or electron characteristics; Membrane stability; Thermal stability and high triplet excitation energy (T1).

L is a single bond, a substituted or unsubstituted C2 to C10 alkenylene group, a substituted or unsubstituted C2 to C10 alkynylene group, a substituted or unsubstituted C6 to C30 arylene group, a substituted or unsubstituted C2 to C30 heteroaryl Or a combination thereof. The conjugation length of the entire compound can be determined by selectively controlling the L, and the crystallinity and solubility of the entire compound can be controlled depending on the bonding position.

Specific examples of L include a substituted or unsubstituted phenylene group, a substituted or unsubstituted biphenylene group, a substituted or unsubstituted terphenylene group, a substituted or unsubstituted naphthylene group, a substituted or unsubstituted anthracenylene group, A substituted or unsubstituted phenanthrylene group, a substituted or unsubstituted pyrenylene group, a substituted or unsubstituted fluorenylene group, a dibenzopurerenylene group, a dibenzothiophenylene group, and a thiophenylene group.

The Ar ¹ may be a substituted or unsubstituted C2 to C30 heteroaryl group. Specific examples of the Ar 1 may include a substituted or unsubstituted pyridinyl group, a substituted or unsubstituted pyrimidinyl group, a substituted or unsubstituted triazinyl group, and the like.

Due to the presence of Ar < ^{1 &} gt ;, the compound can improve not only the bipolar characteristics but also the overall electron injection and transport ability.

More specifically, Ar ¹ may be selected from any one of the following formulas (S-1) to (S-5).

[Formula S-1] [Formula S-2]

[Formula S-3] [Formula S-4]

[Formula S-5]

In the formulas S-3 to S-5, R ¹ to R ⁴ are independently hydrogen, deuterium, a C1 to C30 alkyl group, a C6 to C30 aryl group Any one of R ¹ to R ⁴ in the formulas S-3 and S-4 represents a bonding position, and any one of R ¹ to R ³ in the formula (S-5) .

The compound for organic optoelectronic devices represented by Formula 1 may be represented by Formula 2 below.

(2)

In Formula 2, Ar ¹ is a substituted or unsubstituted C2 to C30 heteroaryl group, Ar ² is a substituted or unsubstituted pyridinyl group, a substituted or unsubstituted pyrimidinyl group, or a substituted or unsubstituted triazinyl group , R ¹ and R ² are independently hydrogen, deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C2 to C30 heteroaryl group, or combinations thereof , L is a single bond, a substituted or unsubstituted C2 to C10 alkenylene group, a substituted or unsubstituted C2 to C10 alkynylene group, a substituted or unsubstituted C6 to C30 arylene group, a substituted or unsubstituted C2 to C30 hetero N is 0 or 3, Ar ³ is hydrogen, deuterium, a substituted or unsubstituted C6 to C30 aryl group or a substituted or unsubstituted C2 to C30 heteroaryl group.

When L and Ar ³ are sequentially bonded as in the case of the compound represented by Formula 2, the synthesis of the entire compound may be advantageous. In addition, the stability of the compound can be increased by cauterizing the 3-position of the most reactive carbazole.

The Ar ³ is more specifically a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted triphenyl group, a substituted or unsubstituted carbazolyl group, a substituted or unsubstituted dibenzothiophenyl group, a substituted or unsubstituted dibenzothiophenyl group, Or an unsubstituted dibenzofuranyl group or a combination thereof.

For example, when Ar ³ is a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, or a substituted or unsubstituted triphenyl group, the effect of substituting the most reactive 3-position in carbazole can be expected . Further, by substituting the stable aromatic compound, improvement in thermal stability and glass transition temperature due to an increase in molecular weight can be expected.

When Ar ³ is hydrogen, the molecular weight is reduced, and the deposition temperature is lowered, so that the processability in manufacturing the device can be improved.

Further, by introducing a bulky aromatic substituent, the non-planarity of the material can be improved and the effect of lowering the crystallinity can be expected.

As another example, when Ar ³ is a substituted or unsubstituted carbazolyl group, a substituted or unsubstituted dibenzothiophenyl group, or a substituted or unsubstituted dibenzofuranyl group, hole injection and transport The role can be increased so that the whole compound can exhibit bipolar properties.

More specifically, the compound for organic optoelectronic devices represented by Formula 1 may be represented by Formula 3 below.

(3)

In Formula 3, Ar ¹ is a substituted or unsubstituted C2 to C30 heteroaryl group, Ar ² is a substituted or unsubstituted pyridinyl group, a substituted or unsubstituted pyrimidinyl group, or a substituted or unsubstituted triazinyl group , R ¹ to R ⁵ are independently hydrogen, deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C2 to C30 heteroaryl group, or combinations thereof , L is a single bond, a substituted or unsubstituted C2 to C10 alkenylene group, a substituted or unsubstituted C2 to C10 alkynylene group, a substituted or unsubstituted C6 to C30 arylene group, a substituted or unsubstituted C2 to C30 hetero N is 0 or 3, X is -NR'-, -S- or -O-, and R 'is hydrogen, deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted Or an unsubstituted C6 to C30 aryl group, A C2 to C30 hetero aryl group, or a combination thereof.

When a carbazolyl derivative is used as a substituent as shown in Formula 3, since the carbazolyl derivative has hole properties, hole injection and transport properties of the whole compound can be improved.

More specifically, the compound for organic optoelectronic devices represented by Formula 1 may be represented by Formula 4 below.

[Chemical Formula 4]

In Formula 4, Ar ¹ is a substituted or unsubstituted C2 to C30 heteroaryl group, Ar ² is a substituted or unsubstituted pyridinyl group, a substituted or unsubstituted pyrimidinyl group, or a substituted or unsubstituted triazinyl group , R ¹ to R ⁵ are independently hydrogen, deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C2 to C30 heteroaryl group, or combinations thereof , L is a single bond, a substituted or unsubstituted C2 to C10 alkenylene group, a substituted or unsubstituted C2 to C10 alkynylene group, a substituted or unsubstituted C6 to C30 arylene group, a substituted or unsubstituted C2 to C30 hetero N is 0 or 3, Ar ⁴ is hydrogen, deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C2 to C30 aryl group, C30 Heteroa Lt; / RTI > or a combination thereof.

In the case of having a bicanbazole-type bond as shown in Formula 4, hole injection and transport properties can be improved as compared with carbazole.

More specifically, the compound for organic optoelectronic devices represented by Formula 1 may be represented by Formula 5 below.

[Chemical Formula 5]

In Formula 5, Ar ¹ is a substituted or unsubstituted C2 to C30 heteroaryl group, Ar ² is a substituted or unsubstituted pyridinyl group, a substituted or unsubstituted pyrimidinyl group, or a substituted or unsubstituted triazinyl group , R ¹ to R ⁵ are independently hydrogen, deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C2 to C30 heteroaryl group, or combinations thereof , L is a single bond, a substituted or unsubstituted C2 to C10 alkenylene group, a substituted or unsubstituted C2 to C10 alkynylene group, a substituted or unsubstituted C6 to C30 arylene group, a substituted or unsubstituted C2 to C30 hetero N is 0 or 3, Ar ⁴ is hydrogen, deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C2 to C30 aryl group, C30 Heteroa Lt; / RTI > or a combination thereof.

In the case where the bonding position of the bivalent carbazole structure is in the 3-position of each carbazole as shown in Formula 5, it is advantageous from the viewpoint of increasing the stability of the compound by substituting the 3-position which has better reactivity than other positions in terms of ease of synthesis have.

The Ar ² may be selected from any one of the following formulas (S-1) to (S-5).

[Formula S-1] [Formula S-2]

[Formula S-3] [Formula S-4]

[Formula S-5]

In the formulas S-3 to S-5, R ¹ to R ⁴ are independently hydrogen, deuterium, a C1 to C30 alkyl group, a C6 to C30 aryl group Any one of R ¹ to R ⁴ in the formulas S-3 and S-4 represents a bonding position, and any one of R ¹ to R ³ in the formula (S-5) .

When the Ar ² is any one of the above-mentioned formulas S-1 to S-5, electron injection and transport characteristics can be controlled according to each substituent.

The compound for organic optoelectronic devices represented by Formula 1 may be represented by the following Formula (ad-1).

[Formula ad-1]

In the above ad-1, X ¹ to X ³ are independently of each other -CR'- or N, and R 'is hydrogen, deuterium, substituted or unsubstituted C1 to C10 alkyl group, substituted or unsubstituted C6 to C30 An aryl group, a substituted or unsubstituted C2 to C30 heteroaryl group or a combination thereof, at least one of X ¹ to X ³ is N, and X ⁴ is -O- or -S-.

In the case of the structure of the above-mentioned formula (ad-1), hole transportability can be improved by introducing a hetero ring aromatic substituent having non-covalent electrons.

The compound for organic optoelectronic devices represented by Formula 1 may be represented by the following Formula (ad-2).

[Formula ad-2]

In the above ad-2, X ¹ to X ³ are independently of each other -CR'- or N, and R 'is hydrogen, deuterium, substituted or unsubstituted C1 to C10 alkyl group, substituted or unsubstituted C6 to C30 An aryl group, a substituted or unsubstituted C2 to C30 heteroaryl group or a combination thereof, at least one of X ¹ to X ³ is N, and X ⁴ is -O- or -S-.

In the case of the structure of the above-mentioned formula (ad-2), hole transportability can be improved by introduction of a hetero ring aromatic having non-covalent electrons.

The compound for organic optoelectronic devices represented by Formula 1 may be represented by the following Formula (ad-3).

[Formula ad-3]

In the above ad-3, X ¹ to X ³ are independently of each other -CR'- or N, and R 'is hydrogen, deuterium, substituted or unsubstituted C1 to C10 alkyl group, substituted or unsubstituted C6 to C30 An aryl group, a substituted or unsubstituted C2 to C30 heteroaryl group or a combination thereof, at least one of X ¹ to X ³ is N, and X ⁴ is -O- or -S-.

In the case of the structure of the above-mentioned formula (ad-3), the hole transportability is improved and the intermolecular non planarity is increased due to the steric hindrance depending on the bonding position of the substituent, which can suppress the separation and interaction and decrease the deposition temperature .

The compound for an organic optoelectronic device may be any one of compounds represented by the following formulas (A-1) to (A-27).

[Formula A-1] [Formula A-2] [Formula A-3]

[Chemical formula A-4] [Chemical formula A-5] [Chemical formula A-6]

[Chemical Formula A-7] [Chemical Formula A-8] [Chemical Formula A-9]

[A-10] [Chemical formula A-11] [Chemical formula A-12]

[Chemical formula A-13] [Chemical formula A-14] [Chemical formula A-15]

[Chemical Formula A-16] [Chemical Formula A-17] [Chemical Formula A-18]

[Chemical Formula A-19] [Chemical Formula A-20] [Chemical Formula A-21]

[Chemical Formula A-22] [Chemical Formula A-22] [Chemical Formula A-24]

[Chemical Formula A-25] [Chemical Formula A-26] [Chemical Formula A-27]

The compound for organic optoelectronic devices may be any one of compounds represented by the following formulas (B-1) to (B-126).

[Formula B-1] [Formula B-2] [Formula B-3]

[Formula B-4] [Formula B-5] [Formula B-6]

[Formula B-7] [Formula B-8] [Formula B-9]

[Formula B-10] [Formula B-11] [Formula B-12]

[Formula B-13] [Formula B-14] [Formula B-15]

[Formula B-16] [Formula B-17] [Formula B-18]

[Formula B-19] [Formula B-20] [Formula B-21]

[Formula B-22] [Formula B-23] [Formula B-24]

[Formula B-25] [Formula B-26] [Formula B-27]

[Formula B-28] [Formula B-29] [Formula B-30]

[Formula B-31] [Formula B-32] [Formula B-33]

[Formula B-34] [Formula B-35] [Formula B-36]

[Formula B-37] [Formula B-38] [Formula B-39]

[Formula B-40] [Formula B-41] [Formula B-42]

[Formula B-43] [Formula B-44] [Formula B-45]

[Formula B-46] [Formula B-47] [Formula B-48]

[Formula B-49] [Formula B-50] [Formula B-51]

[Formula B-52] [Formula B-53] [Formula B-54]

[Chemical Formula B-55] Chemical Formula B-56 Chemical Formula B-57 Chemical Formula B-

[Chemical Formula B-59] Chemical Formula B-60 Chemical Formula B-61 Chemical Formula B-

[Formula B-63] [Formula B-64] [Formula B-65] [Formula B-66]

[Formula B-67] [Formula B-68] [Formula B-69] [Formula B-70]

[Formula B-71] [Formula B-72] [Formula B-73] [Formula B-74]

[Formula B-75] [Formula B-76] [Formula B-77] [Formula B-78]

[Formula B-79] [Formula B-80] [Formula B-81] [Formula B-82]

[Formula B-83] [Formula B-84] [Formula B-85] [Formula B-86]

[Formula B-87] [Formula B-88] [Formula B-89] [Formula B-90]

[Formula B-91] [Formula B-92] [Formula B-93] [Formula B-94]

[Formula B-95] [Formula B-96] [Formula B-97] [Formula B-98]

[Formula B-101] [Formula B-102] [Formula B-101]

[Formula B-103] [Formula B-104] [Formula B-105] [Formula B-106]

[Formula B-107] [Formula B-108] [Formula B-109] [Formula B-110]

[Formula B-111] [Formula B-112] [Formula B-113] [Formula B-114]

[Chemical Formula B-115] [Chemical Formula B-116] [Chemical Formula B-117] [Chemical Formula B-118]

[Chemical Formula B-119] Chemical Formula B-120 Chemical Formula B-121 Chemical Formula B-

[Formula B-124] [Formula B-125] [Formula B-126]

The compound for an organic optoelectronic device may be any one of compounds represented by the following formulas (C-1) to (C-20). However, the present invention is not limited thereto.

[C-1] [C-2] [C-3]

[C-4] [C-5]

[C-6] [C-7] [C-8]

[C-9] [C-10]

[C-11] [C-12] [C-13]

[C-14] [C-15]

[C-16] [C-17] [C-18]

[C-19] [C-20]

In the case where the compound according to one embodiment of the present invention requires both the electronic property and the hole property, it is effective to improve the lifetime of the organic light emitting device and reduce the driving voltage by introducing the functional group having the electron characteristic.

The compound for an organic optoelectronic device according to one embodiment of the present invention has a maximum emission wavelength in a range of about 320 to 500 nm and a triplet excitation energy (T1) in a range of 2.0 eV or more, more specifically 2.0 to 4.0 eV The charge of a host having a high triplet excitation energy can be transferred to the dopant to increase the luminous efficiency of the dopant and freely adjust the HOMO and LUMO energy levels of the material to lower the driving voltage It can be very useful as a host material or a charge transport material.

In addition, since the compound for organic optoelectronic devices has a photoactive and electrical activity, it can be used as a nonlinear optical material, an electrode material, a coloring material, an optical switch, a sensor, a module, a waveguide, an organic transistor, it can be very usefully applied to materials such as a membrane.

The compound for organic optoelectronic devices including the above compound has a glass transition temperature of 90 ° C or higher and a thermal decomposition temperature of 400 ° C or higher, which is excellent in thermal stability. As a result, it is possible to realize a highly efficient organic photoelectric device.

The compound for organic optoelectronic devices including the above-described compounds can play a role of luminescent host together with a suitable dopant, and can play a role of luminescence, electron injection and / or transport. That is, the compound for an organic optoelectronic device can be used as a phosphorescent or fluorescent host material, a blue luminescent dopant material, or an electron transporting material.

The compound for an organic optoelectronic device according to an embodiment of the present invention can be used in an organic thin film layer to improve lifetime characteristics, efficiency characteristics, electrochemical stability and thermal stability of an organic optoelectronic device, and lower a driving voltage.

Accordingly, one embodiment of the present invention provides an organic optoelectronic device including the compound for an organic optoelectronic device. Here, the organic photoelectrode refers to an organic photoelectric device, an organic light emitting device, an organic solar cell, an organic transistor, an organic photoconductor drum, an organic memory device, or the like. In particular, in the case of an organic solar cell, the compound for an organic optoelectronic device according to an embodiment of the present invention is included in an electrode or an electrode buffer layer to increase quantum efficiency. In the case of an organic transistor, an electrode material in a gate, a source- Can be used.

Hereinafter, the organic light emitting device will be described in detail.

Another embodiment of the present invention is an organic light emitting device comprising a cathode, a cathode, and at least one or more organic thin film layers interposed between the anode and the cathode, wherein at least one of the organic thin film layers is an organic thin film And a compound for an organic optoelectronic device according to the present invention.

The organic thin film layer that can include the compound for an organic optoelectronic device may include a layer selected from the group consisting of a light emitting layer, a hole transporting layer, a hole injecting layer, an electron transporting layer, an electron injecting layer, a hole blocking layer, At least one of the layers includes the compound for organic optoelectronic devices according to the present invention. In particular, the hole transport layer or the hole injection layer may include the compound for organic optoelectronic devices according to an embodiment of the present invention. When the compound for an organic optoelectronic device is contained in the light emitting layer, the compound for the organic optoelectronic device may be included as a phosphorescent or fluorescent host, and in particular, may be included as a fluorescent blue dopant material.

1 to 5 are sectional views of an organic light emitting device including a compound for an organic optoelectronic device according to an embodiment of the present invention.

1 to 5, organic light emitting devices 100, 200, 300, 400, and 500 according to an embodiment of the present invention include a cathode 120, a cathode 110, And a structure including at least one organic thin film layer (105).

The anode 120 includes a cathode material. As the anode material, a material having a large work function is preferably used to facilitate injection of holes into the organic thin film layer. Specific examples of the positive electrode material include metals such as nickel, platinum, vanadium, chromium, copper, zinc, and gold or alloys thereof and zinc oxide, indium oxide, indium tin oxide (ITO), indium zinc oxide ), And combinations of metals and oxides such as ZnO and Al or SnO ₂ and Sb, and poly (3-methylthiophene), poly [3,4- (ethylene- 2-dioxythiophene] (PEDT), conductive polymers such as polypyrrole and polyaniline, but are not limited thereto. Preferably, a transparent electrode including ITO (indium tin oxide) may be used as the anode.

The cathode 110 includes a cathode material, and the anode material is preferably a material having a small work function to facilitate electron injection into the organic thin film layer. Specific examples of the negative electrode material include metals such as magnesium, calcium, sodium, potassium, titanium, indium, yttrium, lithium, gadolinium, aluminum, silver, tin, lead, cesium, barium and the like, , LiO ₂ / Al, LiF / Ca, LiF / Al, and BaF ₂ / Ca. However, the present invention is not limited thereto. Preferably, a metal electrode such as aluminum or the like may be used for the negative electrode.

1 illustrates an organic light emitting device 100 in which only a light emitting layer 130 is present as an organic thin film layer 105. The organic thin film layer 105 may exist only in the light emitting layer 130. FIG.

2 illustrates a two-layer organic light emitting device 200 having a light emitting layer 230 including an electron transporting layer and a hole transporting layer 140 as an organic thin film layer 105. As shown in FIG. 2, Similarly, the organic thin film layer 105 may be of a two-layer type including a light emitting layer 230 and a hole transporting layer 140. In this case, the light emitting layer 130 functions as an electron transporting layer, and the hole transporting layer 140 functions to improve the bonding property with a transparent electrode such as ITO and the hole transporting property.

3 is a three-layer organic light emitting device 300 in which an electron transport layer 150, a light emitting layer 130 and a hole transport layer 140 are present as an organic thin film layer 105. The organic thin film layer 105, The emissive layer 130 is in the form of an independent layer and has a form in which a film having excellent electron transportability and hole transportability (the electron transport layer 150 and the hole transport layer 140) is stacked as a separate layer.

4, a four-layer organic light emitting device 400 having an electron injection layer 160, a light emitting layer 130, a hole transport layer 140, and a hole injection layer 170 as organic thin film layers 105, And the hole injection layer 170 can improve the bonding property with ITO used as the anode.

5, the organic thin film layer 105 has different functions such as an electron injection layer 160, an electron transport layer 150, a light emitting layer 130, a hole transport layer 140, and a hole injection layer 170 Layer organic light emitting device 500. The organic light emitting device 500 is effective for lowering the voltage by forming the electron injection layer 160 separately.

1 to 5, the electron transport layer 150, the electron injection layer 160, the light emitting layers 130 and 230, the hole transport layer 140, the hole injection layer 170, and the organic thin film layer 105, And combinations thereof include compounds for the organic optoelectronic devices. At this time, the compound for an organic optoelectronic device can be used for the electron transport layer 150 or the electron transport layer 150 including the electron injection layer 160, and when included in the electron transport layer, a hole blocking layer (not shown) It is not necessary to form them separately, and an organic light emitting device having a more simplified structure can be provided.

When the compound for an organic optoelectronic device is contained in the light emitting layers 130 and 230, the compound for the organic optoelectronic device may be included as a phosphorescent or fluorescent host, or may be included as a fluorescent blue dopant.

The organic light emitting device described above may be formed by a dry film forming method such as evaporation, sputtering, plasma plating, and ion plating after an anode is formed on a substrate; Or a wet film formation method such as spin coating, dipping or flow coating, and then forming a cathode on the organic thin film layer.

According to another embodiment of the present invention, there is provided a display device including the organic light emitting device.

Hereinafter, specific embodiments of the present invention will be described. However, the embodiments described below are only intended to illustrate or explain the present invention, and thus the present invention should not be limited thereto.

(Preparation of compound for organic optoelectronic device)

Example  1: Preparation of Compound A-1

Compound A-1 was prepared using the following reactions.

[Reaction Scheme 1]

To a 1 L round bottom flask equipped with a stirrer in a nitrogen atmosphere were added 26.046 g (70.53 mmol) of 3-phenyl-carbazole-6-yl-boronic acid ester and 22.493 g (84.64 mmol) of 2-bromo-4,6-diphenylpyridine mmol), 300 mL of tetrahydrofuran, and 150 mL of a 2M potassium carbonate aqueous solution were mixed, and 2.445 g (2.12 mmol) of tetrakis (triphenylphosphine) palladium (0) was added thereto and the mixture was heated under reflux for 12 hours in a nitrogen stream. After completion of the reaction, hexane is poured into the reaction product to filter out the resulting solids, and then the solids are dissolved again in toluene, and activated carbon and anhydrous magnesium sulfate are added thereto and stirred. The solution was filtered and then recrystallized from dichloromethane and hexane to obtain Compound (A) (13.80 g, 41%).

[Reaction Scheme 2]

In a 500 mL round bottom flask equipped with a stirrer in a nitrogen atmosphere, 13.8 g (29.31 mmol) of the compound represented by Compound A, 10.910 g (35.17 mmol) of 2-bromo-4,6-diphenylpyridine, 4.226 g (43.97 mmol) is dissolved in 141 mL of toluene, and then 1.342 g (1.47 mmol) of tris (dibenzylideneacetone) dipalladium and 1.186 g (2.93 mmol) of tertiary butyl are added dropwise. The reaction solution was heated at 110 DEG C for 12 hours under a stream of nitrogen and stirred. After the completion of the reaction, the reaction product is poured into methanol to filter off the resulting solid, and the solids are again dissolved in toluene by heating, and then activated carbon and anhydrous magnesium sulfate are added thereto and stirred. The solution was filtered and then recrystallized using ethyl acetate and hexane to obtain 16 g (yield 78%) of Compound A-1.

calcd. C ₅₂ H ₃₅ N ₃ : C, 88.99; H, 5.03; N, 5.99; found: C, 88.74; H, 4.90; N, 5.87

Example  2: Preparation of compound B-1

Compound B-1 was prepared by the following synthesis method.

[Reaction Scheme 3]

To a 1 L round bottom flask equipped with a stirrer in a nitrogen atmosphere was added 24.648 g (84.07 mmol) of the carbazol-3-yl boronic acid ester, 31.294 g (100.89 mmol) of 2-bromo-4,6-diphenylpyridine, 336 mL of furan and 168 mL of a 2M potassium carbonate aqueous solution were mixed, and 2.915 g (2.52 mmol) of tetrakis (triphenylphosphine) palladium (0) was added thereto, followed by heating under reflux for 12 hours under a nitrogen stream. After completion of the reaction, the organic layer is separated, and anhydrous magnesium sulfate is added to remove moisture. The solution was filtered and then recrystallized using toluene and hexane to obtain 26.5 g (yield: 80%) of Compound B.

[Reaction Scheme 4]

In a 500 mL round bottom flask equipped with a stirrer in a nitrogen atmosphere, 26.112 g (63.92 mmol) of the compound represented by Compound A, 23.794 g (76.71 mmol) of 2-bromo-4,6-diphenylpyridine, After dissolving 9.215 g (95.88 mmol) in 256 mL of toluene, 1.171 g (1.28 mmol) of tris (dibenzylideneacetone) dipalladium and 1.916 mL (3.84 mmol) of tertiary butyl are added dropwise. The reaction solution was heated at 110 DEG C for 12 hours under a stream of nitrogen and stirred. After the completion of the reaction, the reaction product is poured into methanol to filter off the resulting solid, and the solids are again dissolved in toluene by heating, and then activated carbon and anhydrous magnesium sulfate are added thereto and stirred. The solution was filtered and then recrystallized with toluene to obtain 33.6 g of Compound C (yield: 84%).

[Reaction Scheme 5]

31.716 g (50.68 mmol) of Compound C was dissolved in 200 mL of dimethylformamide and 600 mL of chloroform and stirred. Then, 9.923 g (55.75 mmol) of N-bromosuccinimide was dissolved in 50 mL of dimethylform It is dissolved in amide and slowly dropped. The reactor is stirred for 12 hours, then the reaction solution is poured into water and the organic layer is separated. The organic layer of chloroform is removed, and the solution is poured into methanol to remove the resulting solid. The solid was recrystallized by using dichloromethane and hexane to obtain 30.4 g (yield: 85%) of Compound D.

[Reaction Scheme 6]

To a 500 mL round bottom flask equipped with a stirrer in a nitrogen atmosphere was added 27.090 g (38.44 mmol) of Compound D, 13.246 g (46.13 mmol) of N-phenylcarbazole-3-boronic acid, 154 mL of tetrahydrofuran, And then 1.333 g (1.15 mmol) of tetrakistriphenylphosphine palladium (0) was added thereto, followed by heating under reflux in a nitrogen stream for 12 hours. After completion of the reaction, the reaction product is poured into methanol to remove the resulting solid matter. The solids are dissolved in toluene by heating, and the mixture is stirred with anhydrous magnesium sulfate and diglycol. The solvent was removed and recrystallization was performed using toluene and hexane to obtain 26.6 g (yield: 80%) of the compound B-1.

calcd. C ₆₄ H ₄₂ N ₄ : C, 88.66; H, 4.88; N, 6.46; found: C, 88.74; H, 4.90; N, 6.44

Example  3: Preparation of Compound C-3

Compound C-3 was prepared in the following manner

[Reaction Scheme 7]

(43.13 mmol) of 3- (2,4-diphenylpyrimidin-6-yl) carbazole and 13.618 g (51.75 mmol) of 2-bromodibenzothiophene in a 500 mL round bottom flask equipped with a stirrer in a nitrogen atmosphere. ) And 4.974 g (51.75 mmol) of tertiary butoxy sodium were dissolved in 175 mL of toluene, and then 1.185 g (1.29 mmol) of tris (dibenzylideneacetone) dipalladium and 1.939 mL do. The reaction solution was heated at 110 DEG C for 12 hours under a stream of nitrogen and stirred. After the completion of the reaction, the reaction product is poured into methanol to filter off the resulting solid, and the solids are again dissolved in toluene by heating, and then activated carbon and anhydrous magnesium sulfate are added thereto and stirred. The solution was filtered and then recrystallized using chlorobenzene to obtain 15.3 g (yield: 61%) of the compound C-3.

calcd. C ₄₀ H ₂₅ N ₃ S: C, 82.87; H, 4.35; N, 7.25; Found: C, 82.84; H, 4.42; N, 7.32

(Production of organic light emitting device)

Example  4: Fabrication of organic light emitting device

The 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, dried, and transferred to a plasma cleaner. Then, the substrate was cleaned using oxygen plasma for 5 minutes, and then the substrate was transferred to a vacuum deposition machine. HTM (see figure below) was vacuum deposited on the ITO substrate using the prepared ITO transparent electrode as an anode to form a 1200 Å thick hole injection layer.

[HTM]

The material synthesized in Example 1 was used as a host above the hole transporting layer, doped with PhGD (see FIG. 1) as a phosphorescent green dopant to 7 wt%, and a 300 Å thick light emitting layer was formed by vacuum deposition.

[PhGD]

Then, 50 Å of BAlq [Bis (2-methyl-8-quinolinolato-N1, O8) - (1,1'-Biphenyl-4-olato)] and 250 Å of Alq3 [Tris (8-hydroxyquinolinato) aluminum] Were successively laminated to form an electron transporting layer. LiF 5 Å and Al 1000 Å were sequentially vacuum-deposited on the electron transport layer to form a cathode, thereby preparing an organic light emitting device.

[BAlq] [Alq3]

Example  5

An organic light emitting device was manufactured in the same manner as in Example 4, except that Example 2 (B-1) was used instead of Example 1 (A-1).

Comparative Example  One

In Example 4, an organic light emitting device was manufactured in the same manner except that CBP was used in place of Example 1 (A-1).

(Performance Measurement of Organic Light Emitting Device)

For each of the organic light emitting devices manufactured in Examples 4 and 5 and Comparative Example 1, the current density change, the luminance change, and the luminous efficiency were measured according to the voltage. Specific measurement methods are as follows, and the results are shown in Table 1 below

(1) Measurement of change in current density with voltage change

For the organic light emitting device manufactured, the current value flowing through the unit device was measured using a current-voltage meter (Keithley 2400) while raising the voltage from 0 V to 10 V, and the measured current value was divided by the area to obtain the result.

(2) Measurement of luminance change according to voltage change

For the organic light emitting device manufactured, the luminance was measured using a luminance meter (Minolta Cs-1000A) while increasing the voltage from 0 V to 10 V, and the result was obtained.

(3) Measurement of luminous efficiency

The current efficiency (cd / A) at the same current density (10 mA / cm ² ) was calculated using the luminance, current density and voltage measured from the above (1) and (2).

device Measurement results at 3000 cd / m2 Highest luminance
(cd / m < 2 & Driving voltage
(V) Luminous efficiency
(cd / A) Power efficiency
(lm / W) Color coordinates Example 4 5 53.9 33.9 0.34, 0.62 33280 Example 5 5 54.2 34.1 0.34, 0.62 35480 Comparative Example 1 7 49.2 22.1 0.33, 0.62 37130

It can be seen that the luminous means according to Examples 4 and 5 have higher efficiency and lower driving voltage than the comparative example. This is believed to be due to improved hole and electron injection and transport properties due to the introduction of suitable substituents in the compounds for the organic optoelectronic devices used.

It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the present invention as defined by the following claims. As will be understood by those skilled in the art. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive.

100: organic light emitting device 110: cathode
120: anode 105: organic thin film layer
130: luminescent layer 140: hole transport layer
150: electron transport layer 160: electron injection layer
170: Hole injection layer 230: Emission layer + Electron transport layer

Claims (20)

A compound for an organic optoelectronic device represented by the following Formula 1:
[Chemical Formula 1]

In Formula 1,
R ¹ and R ² are independently hydrogen, deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C2 to C30 heteroaryl group, or combinations thereof,
L is a single bond, a substituted or unsubstituted C2 to C10 alkenylene group, a substituted or unsubstituted C2 to C10 alkynylene group, a substituted or unsubstituted C6 to C30 arylene group, a substituted or unsubstituted C2 to C30 heteroaryl Or a combination thereof,
n is 0 or 3,
Ar ³ is hydrogen, deuterium, a substituted or unsubstituted C6 to C30 aryl group or a substituted or unsubstituted C2 to C30 heteroaryl group,
Ar ¹ and Ar ² are each independently any one of the following formulas (S-1) to (S-5):
[Formula S-1] [Formula S-2]

[Formula S-3] [Formula S-4]

[Formula S-5]

In the above S-1 and S-2,
* Represents the bonding position,
In the above formulas (S-3) to (S-5)
R ¹ to R ⁴ are independently hydrogen, deuterium, C ¹ to C 30 alkyl groups, C 6 to C 30 aryl groups, or combinations thereof,
In the above formulas (S-3) and (S-4)
Any one of R ¹ to R ⁴ represents a bonding position,
In the above formula (S-5)
Any one of R ¹ to R ³ represents a bonding position.
The method according to claim 1,
Wherein the organic optoelectronic device compound represented by Formula 1 is represented by Formula 2:
(2)

In Formula 2,
R ¹ and R ² are independently hydrogen, deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C2 to C30 heteroaryl group, or combinations thereof,
L is a single bond, a substituted or unsubstituted C2 to C10 alkenylene group, a substituted or unsubstituted C2 to C10 alkynylene group, a substituted or unsubstituted C6 to C30 arylene group, a substituted or unsubstituted C2 to C30 heteroaryl Or a combination thereof,
n is 0 or 3,
Ar ³ is hydrogen, deuterium, a substituted or unsubstituted C6 to C30 aryl group or a substituted or unsubstituted C2 to C30 heteroaryl group,
Ar ¹ and Ar ² are each independently any one of the following formulas (S-1) to (S-5):
[Formula S-1] [Formula S-2]

[Formula S-3] [Formula S-4]

[Formula S-5]

In the above S-1 and S-2,
* Represents the bonding position,
In the above formulas (S-3) to (S-5)
R ¹ to R ⁴ are independently hydrogen, deuterium, C ¹ to C 30 alkyl groups, C 6 to C 30 aryl groups, or combinations thereof,
In the above formulas (S-3) and (S-4)
Any one of R ¹ to R ⁴ represents a bonding position,
In the above formula (S-5)
Any one of R ¹ to R ³ represents a bonding position.
The method according to claim 1,
Ar ³ represents a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted triphenyl group, a substituted or unsubstituted carbazolyl group, a substituted or unsubstituted dibenzothiophenyl group, a substituted or unsubstituted A dibenzofuranyl group, or a combination thereof.
delete delete The method according to claim 1,
Wherein the organic optoelectronic device compound represented by Formula 1 is represented by Formula 3:
(3)

In Formula 3,
R ¹ to R ⁵ are independently hydrogen, deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C2 to C30 heteroaryl group,
L is a single bond, a substituted or unsubstituted C2 to C10 alkenylene group, a substituted or unsubstituted C2 to C10 alkynylene group, a substituted or unsubstituted C6 to C30 arylene group, a substituted or unsubstituted C2 to C30 heteroaryl Or a combination thereof,
n is 0 or 3,
X is -NR'-, -S- or -O-, and R 'is hydrogen, deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted A C2 to C30 heteroaryl group or a combination thereof,
Ar ¹ and Ar ² are each independently any one of the following formulas (S-1) to (S-5):
[Formula S-1] [Formula S-2]

[Formula S-3] [Formula S-4]

[Formula S-5]

In the above S-1 and S-2,
* Represents the bonding position,
In the above formulas (S-3) to (S-5)
R ¹ to R ⁴ are independently hydrogen, deuterium, C ¹ to C 30 alkyl groups, C 6 to C 30 aryl groups, or combinations thereof,
In the above formulas (S-3) and (S-4)
Any one of R ¹ to R ⁴ represents a bonding position,
In the above formula (S-5)
Any one of R ¹ to R ³ represents a bonding position.
The method according to claim 1,
Wherein the organic optoelectronic device compound represented by Formula 1 is represented by Formula 4 below:
[Chemical Formula 4]

In Formula 4,
R ¹ to R ⁵ are independently hydrogen, deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C2 to C30 heteroaryl group,
L is a single bond, a substituted or unsubstituted C2 to C10 alkenylene group, a substituted or unsubstituted C2 to C10 alkynylene group, a substituted or unsubstituted C6 to C30 arylene group, a substituted or unsubstituted C2 to C30 heteroaryl Or a combination thereof,
n is 0 or 3,
Ar ⁴ is hydrogen, deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C2 to C30 heteroaryl group,
Ar ¹ and Ar ² are each independently any one of the following formulas (S-1) to (S-5):
[Formula S-1] [Formula S-2]

[Formula S-3] [Formula S-4]

[Formula S-5]

In the above S-1 and S-2,
* Represents the bonding position,
In the above formulas (S-3) to (S-5)
R ¹ to R ⁴ are independently hydrogen, deuterium, C ¹ to C 30 alkyl groups, C 6 to C 30 aryl groups, or combinations thereof,
In the above formulas (S-3) and (S-4)
Any one of R ¹ to R ⁴ represents a bonding position,
In the above formula (S-5)
Any one of R ¹ to R ³ represents a bonding position.
The method according to claim 1,
Wherein the organic optoelectronic device compound represented by Formula 1 is represented by Formula 5:
[Chemical Formula 5]

In Formula 5,
R ¹ to R ⁵ are independently hydrogen, deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C2 to C30 heteroaryl group,
L is a single bond, a substituted or unsubstituted C2 to C10 alkenylene group, a substituted or unsubstituted C2 to C10 alkynylene group, a substituted or unsubstituted C6 to C30 arylene group, a substituted or unsubstituted C2 to C30 heteroaryl Or a combination thereof,
n is 0 or 3,
Ar ⁴ is hydrogen, deuterium, a substituted or unsubstituted C1 to C10 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, a substituted or unsubstituted C2 to C30 heteroaryl group,
Ar ¹ and Ar ² are each independently any one of the following formulas (S-1) to (S-5):
[Formula S-1] [Formula S-2]

[Formula S-3] [Formula S-4]

[Formula S-5]

In the above S-1 and S-2,
* Represents the bonding position,
In the above formulas (S-3) to (S-5)
R ¹ to R ⁴ are independently hydrogen, deuterium, C ¹ to C 30 alkyl groups, C 6 to C 30 aryl groups, or combinations thereof,
In the above formulas (S-3) and (S-4)
Any one of R ¹ to R ⁴ represents a bonding position,
In the above formula (S-5)
Any one of R ¹ to R ³ represents a bonding position.
delete delete delete The method according to claim 1,
Wherein the compound for an organic optoelectronic device is any one of compounds represented by the following formulas (A-1) to (A-27).
[Formula A-1] [Formula A-2] [Formula A-3]

[Chemical formula A-4] [Chemical formula A-5] [Chemical formula A-6]

[Chemical Formula A-7] [Chemical Formula A-8] [Chemical Formula A-9]

[A-10] [Chemical formula A-11] [Chemical formula A-12]

[Chemical formula A-13] [Chemical formula A-14] [Chemical formula A-15]

[Chemical Formula A-16] [Chemical Formula A-17] [Chemical Formula A-18]

[Chemical Formula A-19] [Chemical Formula A-20] [Chemical Formula A-21]

[Chemical Formula A-22] [Chemical Formula A-22] [Chemical Formula A-24]

[Chemical Formula A-25] [Chemical Formula A-26] [Chemical Formula A-27]

The method according to claim 1,
Wherein the compound for an organic optoelectronic device is any one of compounds represented by the following formulas (B-1) to (B-126).
[Formula B-1] [Formula B-2] [Formula B-3]

[Formula B-4] [Formula B-5] [Formula B-6]

[Formula B-7] [Formula B-8] [Formula B-9]

[Formula B-10] [Formula B-11] [Formula B-12]

[Formula B-13] [Formula B-14] [Formula B-15]

[Formula B-16] [Formula B-17] [Formula B-18]

[Formula B-19] [Formula B-20] [Formula B-21]

[Formula B-22] [Formula B-23] [Formula B-24]

[Formula B-25] [Formula B-26] [Formula B-27]

[Formula B-28] [Formula B-29] [Formula B-30]

[Formula B-31] [Formula B-32] [Formula B-33]

[Formula B-34] [Formula B-35] [Formula B-36]

[Formula B-37] [Formula B-38] [Formula B-39]

[Formula B-40] [Formula B-41] [Formula B-42]

[Formula B-43] [Formula B-44] [Formula B-45]

[Formula B-46] [Formula B-47] [Formula B-48]

[Formula B-49] [Formula B-50] [Formula B-51]

[Formula B-52] [Formula B-53] [Formula B-54]

[Chemical Formula B-55] Chemical Formula B-56 Chemical Formula B-57 Chemical Formula B-

[Chemical Formula B-59] Chemical Formula B-60 Chemical Formula B-61 Chemical Formula B-

[Formula B-63] [Formula B-64] [Formula B-65] [Formula B-66]

[Formula B-67] [Formula B-68] [Formula B-69] [Formula B-70]

[Formula B-71] [Formula B-72] [Formula B-73] [Formula B-74]

[Formula B-75] [Formula B-76] [Formula B-77] [Formula B-78]

[Formula B-79] [Formula B-80] [Formula B-81] [Formula B-82]

[Formula B-83] [Formula B-84] [Formula B-85] [Formula B-86]

[Formula B-87] [Formula B-88] [Formula B-89] [Formula B-90]

[Formula B-91] [Formula B-92] [Formula B-93] [Formula B-94]

[Formula B-95] [Formula B-96] [Formula B-97] [Formula B-98]

[Formula B-101] [Formula B-102] [Formula B-101]

[Formula B-103] [Formula B-104] [Formula B-105] [Formula B-106]

[Formula B-107] [Formula B-108] [Formula B-109] [Formula B-110]

[Formula B-111] [Formula B-112] [Formula B-113] [Formula B-114]

[Chemical Formula B-115] [Chemical Formula B-116] [Chemical Formula B-117] [Chemical Formula B-118]

[Chemical Formula B-119] Chemical Formula B-120 Chemical Formula B-121 Chemical Formula B-

[Formula B-124] [Formula B-125] [Formula B-126]

delete An organic light emitting device comprising an anode, a cathode, and at least one organic thin film layer interposed between the anode and the cathode,
Wherein at least one of the organic thin film layers comprises the compound for an organic optoelectronic device according to any one of claims 1 to 6, 8, 12, 13, Organic light emitting device.
16. The method of claim 15,
Wherein the organic thin film layer is selected from the group consisting of a light emitting layer, a hole transporting layer, a hole injecting layer, an electron transporting layer, an electron injecting layer, a hole blocking layer, and combinations thereof.
16. The method of claim 15,
Wherein the compound for an organic optoelectronic device is contained in a hole transporting layer or a hole injecting layer.
16. The method of claim 15,
Wherein the compound for an organic optoelectronic device is contained in a light emitting layer.
16. The method of claim 15,
Wherein the compound for an organic optoelectronic device is used as a phosphorescent or fluorescent host material in a light emitting layer.
A display device comprising the organic light-emitting device of claim 15.

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