KR20230093174A - Compound and organic light emitting device comprising the same - Google Patents

Abstract

The present specification relates to a compound of Formula 1 and an organic light emitting device including the same.

Description

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

This application claims the benefit of the filing date of Korean Patent Application No. 10-2021-0181870 filed with the Korean Intellectual Property Office on December 17, 2021, all of which are incorporated herein.

The present specification relates to a compound and an organic light emitting device including the same.

In this specification, an organic light emitting device is a light emitting device using an organic semiconductor material, and requires exchange of holes and/or electrons between an electrode and an organic semiconductor material. The organic light emitting device can be roughly divided into two types according to the operation principle as follows. First, excitons are formed in the organic material layer by photons introduced into the device from an external light source, and these excitons are separated into electrons and holes, and these electrons and holes are transferred to different electrodes and used as a current source (voltage source) It is a light emitting device of the form. The second is a type of light emitting device that injects holes and/or electrons into the organic semiconductor material layer forming the interface with the electrodes by applying voltage or current to two or more electrodes and operates by the injected electrons and holes.

In general, the organic light emitting phenomenon refers to a phenomenon in which electrical energy is converted into light energy using an organic material. An organic light emitting device using an organic light emitting phenomenon usually has a structure including an anode, a cathode, and an organic material layer therebetween. Here, the organic material layer is often composed of a multilayer structure composed of different materials in order to increase the efficiency and stability of the organic light emitting device, for example, a hole injection layer, a hole transport layer, a light emitting layer, a hole transport auxiliary layer, an electron transport layer, and an electron injection layer It can be done. In the structure of this organic light emitting device, when a voltage is applied between the two electrodes, holes are injected from the anode and electrons from the cathode are injected into the organic material layer, and when the injected holes and electrons meet, excitons are formed. When it falls back to the ground state, it glows. Such an organic light emitting device is known to have characteristics such as self-luminescence, high luminance, high efficiency, low driving voltage, wide viewing angle, and high contrast.

Materials used as the organic layer in the organic light emitting device may be classified into light emitting materials and charge transport materials, such as hole injection materials, hole transport materials, electron suppression materials, electron transport materials, and electron injection materials, depending on their functions. Light-emitting materials include blue, green, and red light-emitting materials according to light-emitting colors, and yellow and orange light-emitting materials required to realize better natural colors.

In addition, in order to increase color purity and increase light emitting efficiency through energy transfer, a host/dopant system may be used as a light emitting material. The principle is that when a small amount of a dopant having a smaller energy band gap and higher luminous efficiency than the host constituting the light emitting layer is mixed in the light emitting layer in a small amount, 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 moves to the wavelength range of the dopant, light of a desired wavelength can be obtained according to the type of dopant used.

In order to fully exhibit the excellent characteristics of the organic light emitting device described above, materials constituting the organic material layer in the device, such as hole injection materials, hole transport materials, light emitting materials, electron suppression materials, electron transport materials, electron injection materials, etc. are stable and efficient materials. Supported by this, the development of new materials is continuously required.

International Patent Publication No. 2017-126443

In this specification, a compound and an organic light emitting device including the same are described.

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

[Formula 1]

Ar-L-Z

In Formula 1,

L is a direct bond, a substituted or unsubstituted arylene group, or a substituted or unsubstituted heteroarylene group,

Z is Formula 2 or 3 below,

[Formula 2]

[Formula 3]

Formula 2 or 3 is substituted or unsubstituted with a deuterium, a halogen group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heteroaryl group, except for the L-binding site,

Ar is hydrogen, heavy hydrogen, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heteroaryl group, a substituted or unsubstituted amine group, or a substituted or unsubstituted aryl group. It is a cyclic phosphine oxide group,

When L is a direct bond, Ar is not hydrogen or deuterium.

In addition, according to an exemplary embodiment of the present invention, the first electrode; a second electrode provided to face the first electrode; and one or more organic material layers provided between the first electrode and the second electrode, wherein at least one layer of the organic material layers includes the aforementioned compound.

The compound of the present invention can be used as a material for an organic material layer of an organic light emitting device. When the compound of the present invention is included in a hole blocking layer, an electron injection layer, an electron transport layer, or an electron injection and transport layer of an organic light emitting device, an organic light emitting device having characteristics of low voltage, high efficiency, and long lifespan can be manufactured.

1 and 2 show an example of an organic light emitting device according to the present invention.

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

In the present specification, when a certain component is said to "include", it means that it may further include other components without excluding other components unless otherwise stated.

In this specification, when a member is said to be located “on” another member, this includes not only the case where a member is in contact with another member, but also the case where another member exists between the two members.

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

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

In this specification, the term "substituted or unsubstituted" means deuterium; halogen group; Cyano group (-CN); silyl group; boron group; A substituted or unsubstituted alkyl group; A substituted or unsubstituted cycloalkyl group; A substituted or unsubstituted aryl group; and a substituted or unsubstituted heterocyclic group, which is substituted with one or two or more substituents selected from the group consisting of two or more substituents among the substituents exemplified above, or a substituent in which two or more substituents are connected. For example, "a substituent in which two or more substituents are connected" may be a biphenyl group. That is, the biphenyl group may be an aryl group or may be interpreted as a substituent in which two phenyl groups are connected.

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

In the present specification, examples of the halogen group include fluorine (F), chlorine (Cl), bromine (Br), or iodine (I).

In the present specification, the silyl group may be represented by a chemical formula of -SiY1Y2Y3, wherein Y1, Y2 and Y3 are each hydrogen; A substituted or unsubstituted alkyl group; Or it may be a substituted or unsubstituted aryl group. The silyl group specifically includes a trimethylsilyl group, a triethylsilyl group, a t-butyldimethylsilyl group, a vinyldimethylsilyl group, a propyldimethylsilyl group, a triphenylsilyl group, a diphenylsilyl group, a phenylsilyl group, and the like, but is not limited thereto. don't

In the present specification, the boron group may be represented by a chemical formula of -BY4Y5, wherein Y4 and Y5 are each hydrogen; A substituted or unsubstituted alkyl group; Or it may be a substituted or unsubstituted aryl group. The boron group specifically includes, but is not limited to, a dimethyl boron group, a diethyl boron group, a t-butylmethyl boron group, a diphenyl boron group, a phenyl boron group, and the like.

In the present specification, the alkyl group may be straight or branched, and the number of carbon atoms is not particularly limited, but is preferably 1 to 60. According to one embodiment, the number of carbon atoms of the alkyl group is 1 to 30. According to another embodiment, the number of carbon atoms of the alkyl group is 1 to 20. According to another exemplary embodiment, the number of carbon atoms of the alkyl group is 1 to 10. Specific examples of the alkyl group include, but are not limited to, a methyl group, an ethyl group, a propyl group, an isopropyl group, a butyl group, an isobutyl group, a tert-butyl group, a pentyl group, a hexyl group, a heptyl group, and an octyl group.

In the present specification, the amine group is -NH ₂ ; Alkylamine group; N-alkyl arylamine group; Arylamine group; N-arylheteroarylamine group; It may be selected from the group consisting of an N-alkylheteroarylamine group and a heteroarylamine group, and the number of carbon atoms is not particularly limited, but is preferably 1 to 30. Specific examples of the amine group include a methylamine group; dimethylamine group; ethylamine group; diethylamine group; phenylamine group; naphthylamine group; Biphenylamine group; an anthracenylamine group; 9-methylanthracenylamine group; diphenylamine group; ditolylamine group; N-phenyltolylamine group; triphenylamine group; N-phenylbiphenylamine group; N-phenylnaphthylamine group; N-biphenyl naphthylamine group; N-naphthylfluorenylamine group; N-phenylphenanthrenylamine group; N-biphenylphenanthrenylamine group; N-phenylfluorenylamine group; N-phenylterphenylamine group; N-phenanthrenylfluorenylamine group; N-biphenylfluorenylamine group and the like, but are not limited thereto.

In the present specification, the N-alkylarylamine group means an amine group in which N of the amine group is substituted with an alkyl group and an aryl group.

In the present specification, the N-arylheteroarylamine group refers to an amine group in which N of the amine group is substituted with an aryl group and a heteroaryl group.

In the present specification, the N-alkylheteroarylamine group means an amine group in which N of the amine group is substituted with an alkyl group and a heteroaryl group.

In the present specification, the alkyl group of an alkylamine group, an N-arylalkylamine group, an alkylthioxy group, an alkylsulfoxy group, and an N-alkylheteroarylamine group is the same as the above-mentioned alkyl group. Specifically, the alkylthioxy group includes a methylthioxyl group; Ethylthioxy group; tert-butyl thioxy group; Hexylthioxy group; and octylthioxy group, and the alkyl sulfoxy group includes mesyl; ethyl sulfoxy group; propyl sulfoxy group; Butyl sulfoxy group and the like, but is not limited thereto.

In the present specification, the cycloalkyl group is not particularly limited, but preferably has 3 to 60 carbon atoms, and according to an exemplary embodiment, the cycloalkyl group has 3 to 30 carbon atoms. According to another exemplary embodiment, the number of carbon atoms of the cycloalkyl group is 3 to 20. According to another exemplary embodiment, the number of carbon atoms of the cycloalkyl group is 3 to 6. Specifically, there are a cyclopropyl group, a cyclobutyl group, a cyclopentyl group, a cyclohexyl group, a cycloheptyl group, a cyclooctyl group, and the like, but are not limited thereto.

In the present specification, the aryl group is not particularly limited, but preferably has 6 to 60 carbon atoms, and may be a monocyclic aryl group or a polycyclic aryl group. According to one embodiment, the number of carbon atoms of the aryl group is 6 to 30. According to one embodiment, the number of carbon atoms of the aryl group is 6 to 20. The aryl group may be a phenyl group, a biphenyl group, a terphenyl group, etc. as a monocyclic aryl group, but is not limited thereto. The polycyclic aryl group may be a naphthyl group, anthracenyl group, phenanthrenyl group, pyrenyl group, perylenyl group, triphenylene group, chrysenyl group, fluorenyl group, etc., but is not limited thereto.

In the present specification, the heteroaryl group is a ring group containing one or more of N, O, P, S, Si, and Se as heteroatoms, and the number of carbon atoms is not particularly limited, but preferably has 2 to 60 carbon atoms. According to one embodiment, the carbon number of the heterocyclic group is 2 to 30. Examples of the heterocyclic group include a pyridine group, a pyrrole group, a pyrimidine group, a pyridazinyl group, a furan group, a thiophene group, an imidazole group, a pyrazole group, a dibenzofuran group, a dibenzothiophene group, a carbazole group, and the like. However, it is not limited to these.

In the present specification, the arylene group is the same as defined in the above aryl group except that it is a divalent group.

In the present specification, the heteroarylene group is the same as defined in the above heteroaryl group, except that it is a divalent group.

According to an exemplary embodiment of the present specification, Chemical Formula 2 or 3 is unsubstituted or substituted with deuterium, except for the L-binding site.

According to an exemplary embodiment of the present specification, Formula 1 is any one of the structures of Formula 1-1 to Formula 1-4.

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

[Formula 1-3] [Formula 1-4]

In Formulas 1-1 to 1-4, Ar and L are as defined in Formula 1 above.

According to an exemplary embodiment of the present specification, Chemical Formula 1 is any one of the following Chemical Formulas 1-5 to 1-8.

[Formula 1-5] [Formula 1-6]

[Formula 1-7] [Formula 1-8]

In Chemical Formulas 1-5 to 1-8, Ar and L are as defined in Chemical Formula 1 above.

According to an exemplary embodiment of the present specification, Chemical Formula 1 is any one of the following Chemical Formulas 1-1-1 to 1-1-12.

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

[Formula 1-1-4] [Formula 1-1-5] [Formula 1-1-6]

[Formula 1-1-7] [Formula 1-1-8] [Formula 1-1-9]

[Formula 1-1-10] [Formula 1-1-11] [Formula 1-1-12]

In Formulas 1-1-1 to 1-1-12, L and Ar are as defined in Formula 1 above.

According to an exemplary embodiment of the present specification, Chemical Formula 1 is any one of the following Chemical Formulas 2-1-1 to 2-1-12.

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

[Formula 2-1-4] [Formula 2-1-5] [Formula 2-1-6]

[Formula 2-1-7] [Formula 2-1-8] [Formula 2-1-9]

[Formula 2-1-10] [Formula 2-1-11] [Formula 2-1-12]

In Formulas 2-1-1 to 2-1-12, L and Ar are as defined in Formula 1 above.

According to an exemplary embodiment of the present specification, L is a direct bond, a deuterium-substituted or unsubstituted arylene group having 6 to 30 carbon atoms, or a deuterium-substituted or unsubstituted heteroarylene group having 3 to 30 carbon atoms.

According to an exemplary embodiment of the present specification, L is a direct bond, a deuterium-substituted or unsubstituted arylene group having 6 to 20 carbon atoms, or a deuterium-substituted or unsubstituted heteroarylene group having 3 to 20 carbon atoms.

According to an exemplary embodiment of the present specification, L is a direct bond, an arylene group having 6 to 30 carbon atoms, or a heteroarylene group having 3 to 30 carbon atoms.

According to an exemplary embodiment of the present specification, L is a direct bond, an arylene group having 6 to 20 carbon atoms, or a heteroarylene group having 3 to 20 carbon atoms.

According to an exemplary embodiment of the present specification, L is a direct bond, a phenylene group substituted or unsubstituted with deuterium, a divalent biphenyl group substituted or unsubstituted with deuterium, a divalent naphthyl group substituted or unsubstituted with deuterium, a deuterium substituted or unsubstituted divalent quinazoline group, substituted or unsubstituted divalent quinoline group with deuterium, divalent quinoxaline group substituted or unsubstituted with deuterium, divalent carbazole group substituted or unsubstituted with deuterium, deuterium It is a divalent benzofuropyrimidine group substituted or unsubstituted with , or a divalent benzothienopyrimidine group substituted or unsubstituted with deuterium.

According to an exemplary embodiment of the present specification, L is a direct bond, a phenylene group, a divalent biphenyl group, a divalent naphthyl group, a divalent quinazoline group, a divalent quinoline group, a divalent quinoxaline group, a divalent carbazole group, It is a divalent benzofuropyrimidine group or a divalent benzothienopyrimidine group.

According to an exemplary embodiment of the present specification, L is an arylene group having 6 to 30 carbon atoms.

According to an exemplary embodiment of the present specification, L is a heteroarylene group having 3 to 30 carbon atoms.

According to an exemplary embodiment of the present specification, L is a direct bond.

According to an exemplary embodiment of the present specification, L is a phenylene group, a divalent biphenyl group, or a divalent naphthyl group.

According to an exemplary embodiment of the present specification, L is a divalent quinazoline group, a divalent quinoline group, a divalent quinoxaline group, a divalent carbazole group, a divalent benzofuropyrimidine group, or a divalent benzothienopyr it's midingi

According to an exemplary embodiment of the present specification, Ar is a substituted or unsubstituted aryl group, a substituted or unsubstituted heteroaryl group, or a phosphine oxide group.

According to an exemplary embodiment of the present specification, Ar is a deuterium-substituted or unsubstituted aryl group, a deuterium-substituted or unsubstituted heteroaryl group, or an aryl-substituted phosphine oxide group.

According to an exemplary embodiment of the present specification, Ar is a substituted or unsubstituted aryl group or a substituted or unsubstituted heteroaryl group.

According to an exemplary embodiment of the present specification, Ar is a substituted or unsubstituted aryl group having 6 to 30 carbon atoms or a substituted or unsubstituted heteroaryl group having 3 to 30 carbon atoms.

According to one embodiment of the present specification, Ar is a substituted or unsubstituted phosphine oxide group having 6 to 30 carbon atoms, a substituted or unsubstituted aryl group having 6 to 20 carbon atoms, or a substituted or unsubstituted aryl group having 6 to 30 carbon atoms. It is a heteroaryl group having 3 to 20 carbon atoms.

According to an exemplary embodiment of the present specification, Ar is a phosphine oxide group substituted with an aryl group having 6 to 30 carbon atoms substituted or unsubstituted with deuterium, an aryl group substituted or unsubstituted with deuterium, or substituted or unsubstituted with deuterium It is a heteroaryl group.

According to an exemplary embodiment of the present specification, Ar is a phosphine oxide group substituted with an aryl group having 6 to 20 carbon atoms substituted or unsubstituted with deuterium, an aryl group having 6 to 20 carbon atoms substituted or unsubstituted with deuterium, or deuterium It is a substituted or unsubstituted heteroaryl group having 3 to 20 carbon atoms.

According to an exemplary embodiment of the present specification, Ar is a heteroaryl group including an aryl group having 6 to 30 carbon atoms substituted or unsubstituted with deuterium, or N, O or S having 3 to 30 carbon atoms substituted or unsubstituted with deuterium It is Ki.

According to an exemplary embodiment of the present specification, Ar is a heteroaryl group including an aryl group having 6 to 30 carbon atoms substituted or unsubstituted with deuterium, or N, O or S having 3 to 30 carbon atoms substituted or unsubstituted with deuterium It is Ki.

According to an exemplary embodiment of the present specification, Ar is an aryl group having 6 to 30 carbon atoms unsubstituted or substituted with deuterium.

According to an exemplary embodiment of the present specification, Ar is a heteroaryl group having 3 to 30 carbon atoms unsubstituted or substituted with deuterium.

According to an exemplary embodiment of the present specification, Ar is a monocyclic heteroaryl group unsubstituted or substituted with deuterium.

According to an exemplary embodiment of the present specification, Ar is a monocyclic or bicyclic heteroaryl group unsubstituted or substituted with deuterium.

According to an exemplary embodiment of the present specification, Ar is a bicyclic heteroaryl group unsubstituted or substituted with deuterium.

According to an exemplary embodiment of the present specification, Ar is a tricyclic heteroaryl group unsubstituted or substituted with deuterium.

According to an exemplary embodiment of the present specification, Ar is a 4-ring heteroaryl group unsubstituted or substituted with deuterium.

According to an exemplary embodiment of the present specification, Ar is a tricyclic or tetracyclic heteroaryl group containing at least two of N, O, or S, which is unsubstituted or substituted with deuterium.

According to an exemplary embodiment of the present specification, Ar is a substituted or unsubstituted phenyl group, a substituted or unsubstituted phenanthrene group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted pyrimidine group, or a substituted or unsubstituted phenanthrene group. Pyridine group, substituted or unsubstituted triazine group, substituted or unsubstituted benzimidazole group, substituted or unsubstituted benzoxazole group, substituted or unsubstituted benzothioxazole group, substituted or unsubstituted quinoline group, substituted or unsubstituted Unsubstituted quinazoline group, substituted or unsubstituted quinoxaline group, substituted or unsubstituted dibenzofuran group, substituted or unsubstituted dibenzothiophene group, substituted or unsubstituted carbazole group, substituted or unsubstituted A naphthoxazole group, a substituted or unsubstituted naphthothiazole group, a substituted or unsubstituted phenanthrooxazole group, or a substituted or unsubstituted phenanthrothiazole group.

According to an exemplary embodiment of the present specification, Ar is a phenyl group unsubstituted or substituted with an aryl group, a phenanthrene group unsubstituted or substituted with an aryl group, a naphthyl group unsubstituted or substituted with an aryl group, a substituted or unsubstituted aryl group, or a heteroaryl group. A pyridine group unsubstituted or substituted with an unsubstituted pyrimidine group, an aryl group or a heteroaryl group, a triazine group unsubstituted or substituted with an aryl group or heteroaryl group, a benzimidazole group unsubstituted or substituted with an aryl group or an alkyl group, A benzoxazole group unsubstituted or substituted with an aryl group or an alkyl group, a benzothioxazole group unsubstituted or substituted with an aryl group or an alkyl group, a quinoline group unsubstituted or substituted with an aryl group or a heteroaryl group, substituted with an aryl group or a heteroaryl group Or unsubstituted quinazoline group, aryl group or heteroaryl group substituted or unsubstituted quinoxaline group, aryl group or heteroaryl group substituted or unsubstituted dibenzofuran group, aryl group or heteroaryl group substituted or unsubstituted A dibenzothiophene group, a carbazole group unsubstituted or substituted with an aryl group or a heteroaryl group, a naphthoxazole group unsubstituted or substituted with an aryl group or heteroaryl group, or a naphthothiazole group unsubstituted or substituted with an aryl group or heteroaryl group , A phenanthrooxazole group unsubstituted or substituted with an aryl group or a heteroaryl group, or a phenanthrothiazole group unsubstituted or substituted with an aryl group or heteroaryl group.

According to an exemplary embodiment of the present specification, Ar is a phenyl group unsubstituted or substituted with an aryl group, a phenanthrene group unsubstituted or substituted with an aryl group, or a naphthyl group unsubstituted or substituted with an aryl group.

According to an exemplary embodiment of the present specification, Ar is a pyrimidine group unsubstituted or substituted with an aryl group or heteroaryl group, a pyridine group unsubstituted or substituted with an aryl group or heteroaryl group, or a substituted or unsubstituted aryl group or heteroaryl group. It is an unsubstituted triazine group.

According to an exemplary embodiment of the present specification, Ar is a benzimidazole group unsubstituted or substituted with an aryl group or an alkyl group, a benzoxazole group unsubstituted or substituted with an aryl group or an alkyl group, or a substituted or unsubstituted benzoxazole group with an aryl group or an alkyl group. benzothioxazole group, quinoline group unsubstituted or substituted with an aryl group or heteroaryl group, quinazoline group unsubstituted or substituted with an aryl group or heteroaryl group, quinoxaline group unsubstituted or substituted with an aryl group or heteroaryl group, Dibenzofuran group unsubstituted or substituted with an aryl group or heteroaryl group, dibenzothiophene group unsubstituted or substituted with an aryl group or heteroaryl group, carbazole group unsubstituted or substituted with an aryl group or heteroaryl group, an aryl group or Naphthoxazole group unsubstituted or substituted with a heteroaryl group, naphthothiazole group unsubstituted or substituted with an aryl group or heteroaryl group, phenanthroxazole group unsubstituted or substituted with an aryl group or heteroaryl group, or an aryl group or heteroaryl group It is a phenanthrothiazole group unsubstituted or substituted with a group.

According to an exemplary embodiment of the present specification, Ar is a phenyl group unsubstituted or substituted with an aryl group having 6 to 30 carbon atoms, a phenanthrene group unsubstituted or substituted with an aryl group having 6 to 30 carbon atoms, or an aryl group having 6 to 30 carbon atoms. It is a substituted or unsubstituted naphthyl group.

According to an exemplary embodiment of the present specification, Ar is a pyrimidine group unsubstituted or substituted with an aryl group having 6 to 30 carbon atoms or a heteroaryl group having 3 to 30 carbon atoms, an aryl group having 6 to 30 carbon atoms, or a heteroaryl group having 3 to 30 carbon atoms. It is a pyridine group unsubstituted or substituted with a heteroaryl group, or a triazine group unsubstituted or substituted with an aryl group having 6 to 30 carbon atoms or a heteroaryl group having 3 to 30 carbon atoms.

According to an exemplary embodiment of the present specification, Ar is a benzimidazole group unsubstituted or substituted with an aryl group having 6 to 30 carbon atoms or an alkyl group having 1 to 10 carbon atoms; a benzoxazole group unsubstituted or substituted with an aryl group having 6 to 30 carbon atoms or an alkyl group having 1 to 10 carbon atoms; or a benzothioxazole group unsubstituted or substituted with an aryl group having 6 to 30 carbon atoms or an alkyl group having 1 to 10 carbon atoms.

According to an exemplary embodiment of the present specification, Ar is a quinoline group unsubstituted or substituted with an aryl group having 6 to 30 carbon atoms or a heteroaryl group having 3 to 30 carbon atoms, an aryl group having 6 to 30 carbon atoms, or a heteroaryl group having 3 to 30 carbon atoms. A quinazoline group unsubstituted or substituted with an aryl group, or a quinoxaline group unsubstituted or substituted with an aryl group having 6 to 30 carbon atoms or a heteroaryl group having 3 to 30 carbon atoms.

According to an exemplary embodiment of the present specification, Ar is a dibenzofuran group unsubstituted or substituted with an aryl group having 6 to 30 carbon atoms or a heteroaryl group having 3 to 30 carbon atoms, an aryl group having 6 to 30 carbon atoms, or a heteroaryl group having 3 to 30 carbon atoms. A dibenzothiophene group unsubstituted or substituted with a heteroaryl group, a carbazole group unsubstituted or substituted with an aryl group having 6 to 30 carbon atoms or a heteroaryl group having 3 to 30 carbon atoms, an aryl group having 6 to 30 carbon atoms or a heteroaryl group having 3 to 30 carbon atoms A naphthoxazole group unsubstituted or substituted with a heteroaryl group having 30, a naphthothiazole group unsubstituted or substituted with an aryl group having 6 to 30 carbon atoms or a heteroaryl group having 3 to 30 carbon atoms, an aryl group having 6 to 30 carbon atoms or 3 carbon atoms It is a phenanthrooxazole group unsubstituted or substituted with a heteroaryl group of 30 to 30, or a phenanthrothiazole group unsubstituted or substituted with an aryl group of 6 to 30 carbon atoms or a heteroaryl group of 3 to 30 carbon atoms.

According to one embodiment of the present specification, Ar is a phenyl group unsubstituted or substituted with a naphthyl group, a phenanthrene group unsubstituted or substituted with a phenyl group, or a naphthyl group unsubstituted or substituted with a phenyl group.

According to an exemplary embodiment of the present specification, Ar is any one of the substituents below, and the substituents below are unsubstituted or substituted with an alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 30 carbon atoms, or a heteroaryl group having 3 to 30 carbon atoms. do.

According to an exemplary embodiment of the present specification, Ar is any one of the following substituents, and is unsubstituted or substituted with an alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 30 carbon atoms, or a heteroaryl group having 3 to 30 carbon atoms.

According to an exemplary embodiment of the present specification, Ar is any one of the following substituents, and is unsubstituted or substituted with an alkyl group having 1 to 10 carbon atoms, an aryl group having 6 to 30 carbon atoms, or a heteroaryl group having 3 to 30 carbon atoms.

According to an exemplary embodiment of the present specification, Formula 1 is any one of the following structural formulas.

Substituents of the compound of Formula 1 may be combined by a method known in the art, and the type, position or number of substituents may be changed according to techniques known in the art.

In addition, by introducing various substituents into the core structure of the above structure, compounds having inherent characteristics of the introduced substituents can be synthesized. For example, by introducing substituents mainly used in hole injection layer materials, hole transport materials, light emitting layer materials, and electron transport layer materials used in the manufacture of organic light emitting devices into the core structure, materials satisfying the requirements of each organic layer can be synthesized. can

In addition, the organic light emitting device according to the present invention includes a first electrode; a second electrode provided to face the first electrode; and one or more organic material layers provided between the first electrode and the second electrode, wherein at least one layer of the organic material layers contains the aforementioned compound.

The organic light emitting device of the present invention may be manufactured by conventional organic light emitting device manufacturing methods and materials, except for forming one or more organic material layers using the above compounds.

The compound may be formed as an organic material layer by a solution coating method as well as a vacuum deposition method when manufacturing an organic light emitting device. Here, the solution coating method means spin coating, dip coating, inkjet printing, screen printing, spraying, roll coating, etc., but is not limited to these.

The organic material layer of the organic light emitting device of the present invention may have a single-layer structure, or may have a multi-layer structure in which two or more organic material layers are stacked. For example, the organic light emitting device of the present invention may have a structure including a hole injection layer, a hole transport layer, a hole injection and hole transport layer simultaneously, a light emitting layer, an electron transport layer, an electron injection layer, and the like as organic material layers. However, the structure of the organic light emitting diode is not limited thereto and may include a smaller number of organic material layers or a larger number of organic material layers.

In the organic light emitting device of the present invention, the organic material layer includes a hole blocking layer, and the hole blocking layer may include a compound represented by Chemical Formula 1.

In the organic light emitting device of the present invention, the organic material layer may include at least one of an electron transport layer, an electron injection layer, and a layer that simultaneously injects and transports electrons, and at least one of the layers is represented by Chemical Formula 1. compounds may be included.

In another organic light emitting device, the organic material layer may include an electron transport layer or an electron injection layer, and the electron transport layer or electron injection layer may include the compound represented by Chemical Formula 1.

In the organic light emitting device of the present invention, the organic material layer may include at least one of a hole injection layer, a hole transport layer, and a layer that simultaneously injects and transports holes, and at least one of the layers is represented by Chemical Formula 1. compounds may be included.

In another organic light emitting device, the organic material layer may include a hole injection layer or a hole transport layer, and the hole transport layer or hole injection layer may include the compound represented by Chemical Formula 1.

In the specification of the present invention, the first electrode is an anode, the second electrode is a cathode, the organic material layer includes a light emitting layer, and an organic material layer containing the compound is provided between the cathode and the light emitting layer.

In the specification of the present invention, the organic material layer includes a light emitting layer, and the compound is included between the light emitting layer and the cathode.

In the specification of the present invention, the organic material layer includes a hole blocking layer, and the hole blocking layer includes the compound.

In the specification of the present invention, an electron injection layer, an electron transport layer or an electron injection and transport layer is included between the hole blocking layer and the second electrode.

In the specification of the present invention, the hole blocking layer and the electron injection and transport layer are in contact with each other.

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

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

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

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

(3) anode/hole injection layer/hole buffer layer/hole transport layer/light emitting layer/cathode

(4) anode/hole transport layer/light emitting layer/electron transport layer/cathode

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

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

(7) anode / hole injection layer / hole transport layer / light emitting layer / electron transport layer / electron injection layer / cathode

(8) anode / hole injection layer / hole buffer layer / hole transport layer / light emitting layer / electron transport layer / cathode

(9) anode/hole injection layer/hole buffer layer/hole transport layer/light emitting layer/electron transport layer/electron injection layer/cathode

(10) anode / hole transport layer / hole transport auxiliary layer / light emitting layer / electron transport layer / cathode

(11) anode / hole transport layer / hole transport auxiliary layer / light emitting layer / electron transport layer / electron injection layer / cathode

(12) anode / hole injection layer / hole transport layer / hole transport auxiliary layer / light emitting layer / electron transport layer / cathode

(13) anode/hole injection layer/hole transport layer/hole transport auxiliary layer/light emitting layer/electron transport layer/electron injection layer/cathode

(14) anode / hole transport layer / light emitting layer / hole blocking layer / electron transport layer / cathode

(15) anode / hole transport layer / light emitting layer / hole blocking layer / electron transport layer / electron injection layer / cathode

(16) anode / hole injection layer / hole transport layer / light emitting layer / hole blocking layer / electron transport layer / cathode

(17) anode / hole injection layer / hole transport layer / light emitting layer / hole blocking layer / electron transport layer / electron injection layer / cathode

(18) Anode / Hole injection layer / Hole transport layer / Hole transport auxiliary layer / Light emitting layer / Hole blocking layer / Electron injection and transport layer / Cathode

The structure of the organic light emitting device of the present invention may have a structure shown in FIGS. 1 and 2, but is not limited thereto.

1 illustrates a structure of an organic light emitting device in which an anode 2, an organic material layer 3, and a cathode 4 are sequentially stacked on a substrate 1. In this structure, the compound represented by Chemical Formula 1 may be included in the organic material layer 3.

2, the anode 2, the hole injection layer 5, the hole transport layer 6, the hole transport auxiliary layer 7, the light emitting layer 8, the hole blocking layer 9 on the substrate 1. A structure of an organic light emitting device in which an electron injection and transport layer 10 and a cathode 4 are sequentially stacked is illustrated. In this structure, the compound represented by Formula 1 is the hole blocking layer (9). Alternatively, it may be included in the electron injection and transport layer 10.

For example, the organic light emitting device according to the present invention uses a physical vapor deposition (PVD) method such as sputtering or e-beam evaporation to form a metal or conductive metal oxide or an alloy thereof on a substrate. is deposited to form an anode, and from the group consisting of a hole injection layer, a hole transport layer, a hole transport and hole injection layer, a light emitting layer, an electron transport layer, an electron injection layer, and a layer that simultaneously transports and injects electrons thereon. After forming an organic material layer including one or more selected layers, it can be prepared by depositing a material that can be used as a cathode thereon. In addition to this method, an organic light emitting device may be fabricated by sequentially depositing a cathode material, an organic material layer, and an anode material on a substrate.

The organic material layer may have a multilayer 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. In addition, the organic material layer can be formed by a solvent process other than a deposition method using various polymer materials, such as spin coating, dip coating, doctor blading, screen printing, inkjet printing, or a thermal transfer method. Can be made in layers.

The anode is an electrode for injecting holes, and a material having a high work function is preferable so that holes can be smoothly injected into the organic material layer. Specific examples of the anode 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); combinations of metals and oxides such as ZnO: Al or SnO ₂ : Sb; Conductive polymers such as poly(3-methylthiophene), poly[3,4-(ethylene-1,2-dioxy)thiophene] (PEDOT), polypyrrole, and polyaniline, but are not limited thereto.

The cathode is an electrode for injecting electrons, and it is preferable that the cathode material is a material having a small work function so as 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; There are multi-layered materials such as LiF/Al or LiO ₂ /Al, but are not limited thereto.

The hole injection layer is a layer that serves to facilitate the injection of holes from the anode to the light emitting layer, and the hole injection material is a material that can well inject holes from the anode at a low voltage, HOMO (highest occupied molecular orbital) is preferably between the work function of the anode material and the HOMO of the surrounding organic material layer. Specific examples of the hole injection material include metal porphyrine, oligothiophene, arylamine-based organic materials, hexanitrilehexaazatriphenylene-based organic materials, quinacridone-based organic materials, and perylene-based organic materials. of organic materials, anthraquinone, polyaniline, and polythiophene-based conductive polymers, but are not limited thereto. The hole injection layer may have a thickness of 1 to 150 nm. If the thickness of the hole injection layer is 1 nm or more, there is an advantage in preventing the hole injection characteristic from deteriorating, and if it is 150 nm or less, the thickness of the hole injection layer is too thick to increase the driving voltage to improve the movement of holes. There are advantages to avoiding this.

According to an exemplary embodiment of the present specification, the hole injection layer includes a compound represented by Chemical Formula HI-1, but is not limited thereto.

[Formula HI-1]

In the above formula HI-1,

At least one of X'1 to X'6 is N and the others are CH,

R309 to R314 are the same as or different from each other, and each independently hydrogen; heavy hydrogen; nitrile group; A substituted or unsubstituted alkyl group; A substituted or unsubstituted amine group; A substituted or unsubstituted aryl group; or a substituted or unsubstituted heteroaryl group, or bonded to adjacent groups to form a substituted or unsubstituted ring.

According to an exemplary embodiment of the present specification, X'1 to X'6 are N.

According to an exemplary embodiment of the present specification, R309 to R314 are nitrile groups.

According to an exemplary embodiment of the present specification, Formula HI-1 is represented by the following compound.

According to an exemplary embodiment of the present specification, the hole injection layer includes a compound represented by Chemical Formula HI-2, but is not limited thereto.

[Formula HI-2]

In the above formula HI-2,

R400 to R402 are the same as or different from each other, and each independently hydrogen; heavy hydrogen; A substituted or unsubstituted alkyl group; A substituted or unsubstituted aryl group; A substituted or unsubstituted amine group; A substituted or unsubstituted heteroaryl group; And any one selected from the group consisting of combinations thereof, or bonded to adjacent groups to form a substituted or unsubstituted ring,

L402 is a substituted or unsubstituted arylene group or a substituted or unsubstituted heteroarylene group.

According to an exemplary embodiment of the present specification, R400 to R402 are the same as or different from each other, and each independently represents a substituted or unsubstituted aryl group; A substituted or unsubstituted amine group; A substituted or unsubstituted heteroaryl group; And any one selected from the group consisting of combinations thereof.

According to an exemplary embodiment of the present specification, R402 is a phenyl group substituted with a carbazole group or an arylamine group; A biphenyl group substituted with a carbazole group or an arylamine group; And any one selected from the group consisting of combinations thereof.

According to an exemplary embodiment of the present specification, R400 and R401 are the same as or different from each other, and are each independently a substituted or unsubstituted aryl group, or combine with adjacent groups to form an aromatic hydrocarbon ring substituted with an alkyl group.

According to an exemplary embodiment of the present specification, R400 and R401 are the same as or different from each other, and each independently represents an aryl group unsubstituted or substituted with an alkyl group.

According to an exemplary embodiment of the present specification, R400 and R401 are the same as or different from each other, and each independently represents a biphenyl group or a dimethylfluorene group.

According to an exemplary embodiment of the present specification, Formula HI-2 is the following compound.

The hole transport layer may play a role of facilitating hole transport. As the hole transport material, a material capable of transporting holes from the anode or the hole injection layer to the light emitting layer, and a material having high hole mobility is suitable. Specific examples include, but are not limited to, arylamine-based organic materials, conductive polymers, and block copolymers having both conjugated and non-conjugated parts.

According to an exemplary embodiment of the present specification, the hole transport layer includes a compound represented by Formula HT-1, but is not limited thereto.

[Formula HT-1]

In the above formula HT-1,

R403 to R406 are the same as or different from each other, and each independently hydrogen; heavy hydrogen; A substituted or unsubstituted alkyl group; A substituted or unsubstituted aryl group; A substituted or unsubstituted amine group; A substituted or unsubstituted heteroaryl group; And any one selected from the group consisting of combinations thereof, or bonded to adjacent groups to form a substituted or unsubstituted ring,

L403 is a substituted or unsubstituted arylene group or a substituted or unsubstituted heteroarylene group;

l403 is an integer from 1 to 3, and when l403 is 2 or more, L403 is the same as or different from each other.

According to an exemplary embodiment of the present specification, R403 to R406 are the same as or different from each other, and each independently represents a substituted or unsubstituted aryl group; A substituted or unsubstituted amine group; A substituted or unsubstituted heteroaryl group; And any one selected from the group consisting of combinations thereof.

According to an exemplary embodiment of the present specification, R403 to R406 are the same as or different from each other, and each independently represents an aryl group having 6 to 30 carbon atoms.

According to an exemplary embodiment of the present specification, R403 to R406 are the same as or different from each other, and each independently represents a phenyl group, a biphenyl group, or a naphthyl group.

According to an exemplary embodiment of the present specification, R403 to R406 are the same as or different from each other, and each independently represents a phenyl group.

According to an exemplary embodiment of the present specification, L403 is an arylene group having 6 to 30 carbon atoms or a heteroarylene group having 3 to 30 carbon atoms substituted with an arylene group.

According to an exemplary embodiment of the present specification, L403 is a phenylene group, a divalent biphenyl group, or a divalent carbazole group unsubstituted or substituted with an aryl group.

According to one embodiment of the present specification, L403 is a divalent carbazole group substituted with a naphthyl group.

According to an exemplary embodiment of the present specification, Formula HT-1 is the following compound.

A hole buffer layer may be additionally provided between the hole injection layer and the hole transport layer, and may include a hole injection or transport material known in the art.

A hole transport auxiliary layer may be provided between the hole transport layer and the light emitting layer. The hole transport auxiliary layer may be the aforementioned spiro compound or a material known in the art.

The hole transport auxiliary layer is a layer that suppresses electrons and helps to smoothly transport holes to the light emitting layer.

According to an exemplary embodiment of the present specification, the hole transport auxiliary layer includes a compound represented by Formula EB-1 below, but is not limited thereto.

[Formula EB-1]

In the above formula EB-1,

L311 to L313 are the same as or different from each other, and are each independently a direct bond; A substituted or unsubstituted arylene group; Or a substituted or unsubstituted heteroarylene group,

R311 to R313 are the same as or different from each other, and each independently hydrogen; heavy hydrogen; A substituted or unsubstituted alkyl group; A substituted or unsubstituted aryl group; A substituted or unsubstituted heteroaryl group; And any one selected from the group consisting of combinations thereof, or bonded to adjacent groups to form a substituted or unsubstituted ring.

According to an exemplary embodiment of the present specification, R311 to R313 are the same as or different from each other, and each independently represents a substituted or unsubstituted aryl group; A substituted or unsubstituted heteroaryl group; And any one selected from the group consisting of combinations thereof.

According to an exemplary embodiment of the present specification, R311 to R313 are the same as or different from each other, and each independently a phenyl group; biphenyl group; or a phenanthrene group.

According to an exemplary embodiment of the present specification, R311 to R313 are the same as or different from each other, and each independently represents a phenyl group or a phenanthrene group.

According to an exemplary embodiment of the present specification, the L311 to L313 are the same as or different from each other, and are each independently directly bonded; Arylene group; or a heteroarylene group.

According to an exemplary embodiment of the present specification, L311 to L313 are a direct bond or phenylene.

According to an exemplary embodiment of the present specification, Formula EB-1 is represented by the following compound.

The light emitting layer may emit red, green or blue light and may be made of a phosphorescent material or a fluorescent material. The light emitting material is a material capable of emitting light in the visible ray region by receiving and combining holes and electrons from the hole transport layer and the electron transport layer, respectively, and a material having good quantum efficiency for fluorescence or phosphorescence is preferable. 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, benzthiazole and benzimidazole series; poly(p-phenylenevinylene) (PPV)-based polymers; spiro compounds; Polyfluorene, rubrene, etc., but are not limited thereto.

A host material for the light emitting layer includes a condensed aromatic ring derivative or a compound containing a hetero ring. Specifically, condensed aromatic ring derivatives include anthracene derivatives, pyrene derivatives, naphthalene derivatives, pentacene derivatives, phenanthrene compounds, fluoranthene compounds, etc., and heterocyclic-containing compounds include carbazole derivatives, dibenzofuran derivatives, ladder type furan compounds, pyrimidine derivatives, etc., but are not limited thereto.

According to an exemplary embodiment of the present specification, the host includes a compound represented by Formula H-1 below, but is not limited thereto.

[Formula H-1]

In the above formula H-1,

L20 and L21 are the same as or different from each other, and are each independently a direct bond; A substituted or unsubstituted arylene group; Or a substituted or unsubstituted divalent heterocyclic group,

Ar20 and Ar21 are the same as or different from each other, and are each independently hydrogen; heavy hydrogen; A substituted or unsubstituted aryl group; Or a substituted or unsubstituted heterocyclic group,

R201 is hydrogen; heavy hydrogen; halogen group; A substituted or unsubstituted alkyl group; A substituted or unsubstituted cycloalkyl group; A substituted or unsubstituted aryl group; Or a substituted or unsubstituted heterocyclic group,

r201 is an integer of 1 to 8, and when r201 is 2 or more, two or more R201s are the same as or different from each other.

In one embodiment of the present specification, L20 and L21 are the same as or different from each other, and are each independently a direct bond; a monocyclic or polycyclic arylene group having 6 to 30 carbon atoms; or a monocyclic or polycyclic divalent heterocyclic group having 2 to 30 carbon atoms.

In one embodiment of the present specification, L20 and L21 are the same as or different from each other, and are each independently a direct bond; A phenylene group unsubstituted or substituted with heavy hydrogen; A biphenyl group unsubstituted or substituted with heavy hydrogen; A naphthylene group unsubstituted or substituted with heavy hydrogen; Divalent dibenzofuran group; or a divalent dibenzothiophene group.

In one embodiment of the present specification, Ar20 is a substituted or unsubstituted heterocyclic group, and Ar21 is a substituted or unsubstituted aryl group.

In one embodiment of the present specification, Ar20 and Ar21 are the same as or different from each other, and each independently represents a substituted or unsubstituted monocyclic or polycyclic aryl group having 6 to 30 carbon atoms; or a substituted or unsubstituted monocyclic or polycyclic heterocyclic group having 2 to 30 carbon atoms.

In one embodiment of the present specification, Ar20 and Ar21 are the same as or different from each other, and each independently represents a substituted or unsubstituted monocyclic to tetracyclic aryl group having 6 to 20 carbon atoms; or a substituted or unsubstituted monocyclic to 4-cyclic heterocyclic group having 6 to 20 carbon atoms.

In one embodiment of the present specification, Ar20 and Ar21 are the same as or different from each other, and each independently deuterium or a phenyl group unsubstituted or substituted with a monocyclic or polycyclic aryl group having 6 to 20 carbon atoms; a biphenyl group unsubstituted or substituted with heavy hydrogen or a monocyclic or polycyclic aryl group having 6 to 20 carbon atoms; a naphthyl group unsubstituted or substituted with a monocyclic or polycyclic aryl group having 6 to 20 carbon atoms; a thiophene group unsubstituted or substituted with a monocyclic or polycyclic aryl group having 6 to 30 carbon atoms; a dibenzofuran group unsubstituted or substituted with a monocyclic or polycyclic aryl group having 6 to 20 carbon atoms; a naphthobenzofuran group unsubstituted or substituted with a monocyclic or polycyclic aryl group having 6 to 20 carbon atoms; a dibenzothiophene group unsubstituted or substituted with a monocyclic or polycyclic aryl group having 6 to 20 carbon atoms; or a naphthobenzothiophene group unsubstituted or substituted with a monocyclic or polycyclic aryl group having 6 to 20 carbon atoms.

In one embodiment of the present specification, Ar20 and Ar21 are the same as or different from each other, and each independently represents a phenyl group unsubstituted or substituted with deuterium; A biphenyl group unsubstituted or substituted with heavy hydrogen; terphenyl group; A naphthyl group unsubstituted or substituted with heavy hydrogen; A thiophene group unsubstituted or substituted with a phenyl group; phenanthrene group; Dibenzofuran group; Naphthobenzofuran group; Dibenzothiophene group; or a naphthobenzothiophene group.

In one embodiment of the present specification, Ar20 and Ar21 are the same as or different from each other, and each independently represents a 1-naphthyl group or a 2-naphthyl group.

According to an exemplary embodiment of the present specification, R201 is hydrogen.

According to an exemplary embodiment of the present specification, Formula H-1 is represented by the following compound.

When the light emitting layer emits red light, PIQIr (acac) (bis (1-phenylisoquinoline) acetylacetonateiridium), PQIr (acac) (bis (1-phenylquinoline) acetylacetonate iridium), PQIr (tris (1-phenylquinoline) iridium) are used as light emitting dopants. ), a phosphorescent material such as octaethylporphyrin platinum (PtOEP), or a fluorescent material such as Alq ₃ (tris(8-hydroxyquinolino)aluminum), but is not limited thereto. When the light emitting layer emits green light, a phosphorescent material such as Ir(ppy) ₃ (fac tris(2-phenylpyridine)iridium) or a fluorescent material such as Alq3 (tris(8-hydroxyquinolino)aluminum) may be used as the light emitting dopant. However, it is not limited thereto. When the light emitting layer emits blue light, as the light emitting dopant, a phosphorescent material such as (4,6-F2ppy) ₂ Irpic, spiro-DPVBi, spiro-6P, distylbenzene (DSB), distryarylene (DSA), Fluorescent materials such as PFO-based polymers and PPV-based polymers may be used, but are not limited thereto.

According to an exemplary embodiment of the present specification, the dopant includes a compound represented by Formula D-1 below, but is not limited thereto.

[Formula D-1]

In the above formula D-1,

T1 to T6 are the same as or different from each other, and each independently hydrogen; A substituted or unsubstituted alkyl group; A substituted or unsubstituted aryl group; Or a substituted or unsubstituted heteroaryl group,

t5 and t6 are each an integer from 1 to 4,

When t5 is 2 or more, the two or more T5s are the same as or different from each other,

When t6 is 2 or more, the 2 or more T6s are the same as or different from each other.

According to an exemplary embodiment of the present specification, T1 to T6 are the same as or different from each other, and each independently hydrogen; A substituted or unsubstituted straight-chain or branched-chain alkyl group having 1 to 30 carbon atoms; A substituted or unsubstituted monocyclic or polycyclic aryl group having 6 to 30 carbon atoms; or a substituted or unsubstituted monocyclic or polycyclic heteroaryl group having 2 to 30 carbon atoms.

According to an exemplary embodiment of the present specification, T1 to T6 are the same as or different from each other, and each independently hydrogen; a straight-chain or branched-chain alkyl group having 1 to 30 carbon atoms; a monocyclic or polycyclic aryl group having 6 to 30 carbon atoms unsubstituted or substituted with a nitrile group or a linear or branched chain alkyl group having 1 to 30 carbon atoms; or a monocyclic or polycyclic heteroaryl group having 2 to 30 carbon atoms unsubstituted or substituted with a straight chain or branched chain alkyl group having 1 to 30 carbon atoms.

According to an exemplary embodiment of the present specification, T1 to T6 are the same as or different from each other, and each independently hydrogen; A phenyl group substituted with a methyl group; or a dibenzofuran group.

According to an exemplary embodiment of the present specification, Formula D-1 is represented by the following compound.

A hole blocking layer may be provided between the electron transport layer and the light emitting layer, and materials known in the art may be used.

The electron transport layer may serve to facilitate electron transport. As the electron transport material, a material capable of receiving electrons well from the cathode and transferring them to the light emitting layer, and a material having high electron mobility is suitable. Specific examples include Al complexes of 8-hydroxyquinoline; Complexes containing Alq ₃ ; organic radical compounds; hydroxyflavone-metal complexes and the like, but are not limited thereto. The thickness of the electron transport layer may be 1 to 50 nm. If the thickness of the electron transport layer is 1 nm or more, there is an advantage in preventing deterioration of electron transport properties, and if it is 50 nm or less, the thickness of the electron transport layer is too thick to prevent an increase in driving voltage to improve electron movement. There are advantages that can be

The electron injection layer may serve to smoothly inject electrons. The electron injecting material has the ability to transport electrons, has an excellent electron injecting effect from the cathode, a light emitting layer or a light emitting material, prevents movement of excitons generated in the light emitting layer to the hole injection layer, and also , compounds having excellent thin film forming ability are preferred. Specifically, fluorenone, anthraquinodimethane, diphenoquinone, thiopyran dioxide, oxazole, oxadiazole, triazole, imidazole, perylenetetracarboxylic acid, preonylidene methane, anthrone, etc. and their derivatives, metals complex compounds and nitrogen-containing 5-membered ring derivatives, but are not limited thereto.

The electron injection and transport layer is a layer that facilitates electron injection and transport, and may be formed by using the above-described electron transport layer material or electron injection layer material alone or in combination with other materials.

According to an exemplary embodiment of the present specification, the electron injection and transport layer includes a compound represented by Formula EI-1.

[Formula EI-1]

In the above formula EI-1,

At least one of Z11 to Z13 is N and the others are CH,

At least one of Z14 to Z16 is N and the others are CH,

L701 is a direct bond; A substituted or unsubstituted arylene group; Or a substituted or unsubstituted heteroarylene group,

Ar701 to Ar704 are the same as or different from each other, and each independently a substituted or unsubstituted aryl group; Or a substituted or unsubstituted heteroaryl group,

1701 is an integer of 1 to 4, and when 1701 is plural, L701 is the same as or different from each other.

According to an exemplary embodiment of the present specification, L701 is a substituted or unsubstituted monocyclic or polycyclic arylene group having 6 to 30 carbon atoms.

According to an exemplary embodiment of the present specification, L701 is a phenylene group; a biphenylylene group; or a naphthylene group.

According to an exemplary embodiment of the present specification, L701 is a phenylene group; or a naphthylene group.

According to an exemplary embodiment of the present specification, Ar701 to Ar704 are the same as or different from each other, and each independently represents a substituted or unsubstituted monocyclic or polycyclic aryl group having 6 to 30 carbon atoms or a heteroaryl group having 3 to 30 carbon atoms. .

According to an exemplary embodiment of the present specification, Ar701 to Ar704 are phenyl groups.

According to an exemplary embodiment of the present specification, Formula EI-1 is represented by the following compound.

According to one embodiment of the present specification, the electron injection and transport layer may further include a metal complex.

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

The hole blocking layer is a layer that blocks holes from reaching the cathode, and may be generally formed under the same conditions as the hole injection layer. Specifically, there are oxadiazole derivatives, triazole derivatives, phenanthroline derivatives, BCP, aluminum complexes, and the like, but are not limited thereto.

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

The organic light emitting device of the present invention may be manufactured by conventional organic light emitting device manufacturing methods and materials, except for forming one or more organic material layers using the above compounds.

The preparation method of the compound of Chemical Formula 1 and the manufacture of an organic light emitting device using the same will be described in detail in the following examples. However, the following examples are intended to illustrate the present invention, and the scope of the present invention is not limited thereto.

In the reaction scheme below, various kinds of intermediates can be synthesized according to the appropriate selection of starting materials known to those skilled in the art for the type and number of substituents. Reaction type and reaction conditions may be used those known in the art.

All of the compounds represented by Chemical Formula 1 described herein can be prepared by appropriately combining the preparation formulas described in the examples herein and the intermediates based on common technical knowledge.

Synthesis Example 1

Sub1 (15g, 47.2mmol) and sub1-1 (20.7g, 49.6mmol) were added to 300ml of THF and stirred and refluxed. Thereafter, potassium carbonate (19.6g, 141.6mmol) was dissolved in 100ml of water, and after sufficiently stirred, bis(tri-tert-butylphosphine)palladium(0) (0.2g, 0.5mmol) was added. After reacting for 4 hours, the mixture was cooled to room temperature, and the organic layer and the water layer were separated and the organic layer was distilled. This was dissolved in chloroform again, and after washing twice with water, the organic layer was separated, stirred with anhydrous magnesium sulfate, filtered, and the filtrate was distilled under reduced pressure. The concentrated compound was purified by silica gel column chromatography to prepare 16.2 g of Compound 1. (Yield 60%, MS: [M+H]+= 574)

Synthesis Example 2

Sub2 (15g, 31mmol) and sub1-2 (13.6g, 32.5mmol) were added to 300ml of THF and stirred and refluxed. Thereafter, potassium carbonate (12.9g, 93mmol) was dissolved in 100ml of water, and after stirring sufficiently, bis(tri-tert-butylphosphine)palladium(0) (0.2g, 0.3mmol) was added. After reacting for 4 hours, the mixture was cooled to room temperature, and the organic layer and the water layer were separated and the organic layer was distilled. This was dissolved in chloroform again, and after washing twice with water, the organic layer was separated, stirred with anhydrous magnesium sulfate, filtered, and the filtrate was distilled under reduced pressure. The concentrated compound was purified by silica gel column chromatography to prepare 17.9 g of Compound 2. (Yield 78%, MS: [M+H]+= 740)

Synthesis Example 3

Sub3 (15g, 38.1mmol) and sub1-3 (16.7g, 40mmol) were added to 300ml of THF and stirred and refluxed. Thereafter, potassium carbonate (15.8g, 114.3mmol) was dissolved in 100ml of water, and after stirring sufficiently, bis(tri-tert-butylphosphine)palladium(0) (0.2g, 0.4mmol) was added. After reacting for 3 hours, the mixture was cooled to room temperature, and the organic layer was distilled after separating the organic layer and the water layer. This was dissolved in chloroform again, and after washing twice with water, the organic layer was separated, stirred with anhydrous magnesium sulfate, filtered, and the filtrate was distilled under reduced pressure. The concentrated compound was purified by silica gel column chromatography to prepare 14.8 g of Compound 3. (Yield 60%, MS: [M+H]+= 650)

Synthesis Example 4

Sub4 (15g, 26mmol) and sub1-4 (11.4g, 27.3mmol) were added to 300ml of THF and stirred and refluxed. Thereafter, potassium carbonate (10.8g, 78.1mmol) was dissolved in 100ml of water, and after sufficiently stirred, bis(tri-tert-butylphosphine)palladium(0) (0.1g, 0.3mmol) was added. After reacting for 4 hours, the mixture was cooled to room temperature, and the organic layer and the water layer were separated and the organic layer was distilled. This was dissolved in chloroform again, and after washing twice with water, the organic layer was separated, stirred with anhydrous magnesium sulfate, filtered, and the filtrate was distilled under reduced pressure. The concentrated compound was purified by silica gel column chromatography to prepare 14.7 g of Compound 4. (Yield 68%, MS: [M+H]+= 832)

Synthesis Example 5

Sub5 (15g, 38.1mmol) and sub1-2 (16.7g, 40mmol) were added to 300ml of THF and stirred and refluxed. Thereafter, potassium carbonate (15.8g, 114.3mmol) was dissolved in 100ml of water, and after stirring sufficiently, bis(tri-tert-butylphosphine)palladium(0) (0.2g, 0.4mmol) was added. After reacting for 5 hours, the mixture was cooled to room temperature, and the organic layer was distilled after separating the organic layer and the water layer. This was dissolved in chloroform again, and after washing twice with water, the organic layer was separated, stirred with anhydrous magnesium sulfate, filtered, and the filtrate was distilled under reduced pressure. The concentrated compound was purified by silica gel column chromatography to prepare 16.6 g of Compound 5. (Yield 67%, MS: [M+H]+= 650)

Synthesis Example 6

Sub6 (15g, 33.8mmol) and sub1-1 (14.8g, 35.5mmol) were added to 300ml of THF and stirred and refluxed. Thereafter, potassium carbonate (14g, 101.4mmol) was dissolved in 100ml of water, and after stirring sufficiently, bis(tri-tert-butylphosphine)palladium(0) (0.2g, 0.3mmol) was added. After reacting for 2 hours, it was cooled to room temperature, and the organic layer and the water layer were separated, and the organic layer was distilled. This was dissolved in chloroform again, and after washing twice with water, the organic layer was separated, stirred with anhydrous magnesium sulfate, filtered, and the filtrate was distilled under reduced pressure. The concentrated compound was purified by silica gel column chromatography to prepare 14.4 g of Compound 6. (Yield 61%, MS: [M+H]+= 700)

Synthesis Example 7

Sub7 (15g, 35.5mmol) and sub1-5 (15.6g, 37.2mmol) were added to 300ml of THF and stirred and refluxed. Thereafter, potassium carbonate (14.7g, 106.4mmol) was dissolved in 100ml of water, and after sufficiently stirred, bis(tri-tert-butylphosphine)palladium(0) (0.2g, 0.4mmol) was added. After reacting for 2 hours, it was cooled to room temperature, and the organic layer and the water layer were separated, and the organic layer was distilled. This was dissolved in chloroform again, and after washing twice with water, the organic layer was separated, stirred with anhydrous magnesium sulfate, filtered, and the filtrate was distilled under reduced pressure. The concentrated compound was purified by silica gel column chromatography to prepare 18.8 g of Compound 7. (Yield 78%, MS: [M+H]+= 679)

Synthesis Example 8

Sub8 (15g, 38.2mmol) and sub1-3 (16.8g, 40.1mmol) were added to 300ml of THF and stirred and refluxed. Thereafter, potassium carbonate (15.8g, 114.5mmol) was dissolved in 100ml of water, and after sufficiently stirred, bis(tri-tert-butylphosphine)palladium(0) (0.2g, 0.4mmol) was added. After reacting for 4 hours, the mixture was cooled to room temperature, and the organic layer and the water layer were separated and the organic layer was distilled. This was dissolved in chloroform again, and after washing twice with water, the organic layer was separated, stirred with anhydrous magnesium sulfate, filtered, and the filtrate was distilled under reduced pressure. The concentrated compound was purified by silica gel column chromatography to prepare 17.1 g of Compound 8. (Yield 69%, MS: [M+H]+= 649)

Synthesis Example 9

Sub9 (15g, 35.8mmol) and sub1-1 (15.7g, 37.6mmol) were added to 300ml of THF and stirred and refluxed. After that, potassium carbonate (14.8g, 107.4mmol) was dissolved in 100ml of water, and after stirring sufficiently, bis(tri-tert-butylphosphine)palladium(0) (0.2g, 0.4mmol) was added. After reacting for 5 hours, the mixture was cooled to room temperature, and the organic layer was distilled after separating the organic layer and the water layer. This was dissolved in chloroform again, and after washing twice with water, the organic layer was separated, stirred with anhydrous magnesium sulfate, filtered, and the filtrate was distilled under reduced pressure. The concentrated compound was purified by silica gel column chromatography to prepare 19.1 g of Compound 9. (Yield 79%, MS: [M+H]+= 675)

Synthesis Example 10

Sub10 (15g, 47.3mmol) and sub1-6 (20.8g, 49.7mmol) were added to 300ml of THF and stirred and refluxed. Thereafter, potassium carbonate (19.6g, 142mmol) was dissolved in 100ml of water, and after stirring sufficiently, bis(tri-tert-butylphosphine)palladium(0) (0.2g, 0.5mmol) was added. After reacting for 3 hours, the mixture was cooled to room temperature, and the organic layer was distilled after separating the organic layer and the water layer. This was dissolved in chloroform again, and after washing twice with water, the organic layer was separated, stirred with anhydrous magnesium sulfate, filtered, and the filtrate was distilled under reduced pressure. The concentrated compound was purified by silica gel column chromatography to prepare 21.1 g of Compound 10. (Yield 78%, MS: [M+H]+= 573)

Synthesis Example 11

Sub11 (15g, 38.8mmol) and sub1-6 (17g, 40.7mmol) were added to 300ml of THF and stirred and refluxed. Thereafter, potassium carbonate (16.1g, 116.3mmol) was dissolved in 100ml of water, and after sufficiently stirred, bis(tri-tert-butylphosphine)palladium(0) (0.2g, 0.4mmol) was added. After reacting for 2 hours, it was cooled to room temperature, and the organic layer and the water layer were separated, and the organic layer was distilled. This was dissolved in chloroform again, and after washing twice with water, the organic layer was separated, stirred with anhydrous magnesium sulfate, filtered, and the filtrate was distilled under reduced pressure. The concentrated compound was purified by silica gel column chromatography to prepare 19.2 g of Compound 11. (Yield 77%, MS: [M+H]+= 643)

Synthesis Example 12

Sub12 (15g, 65.3mmol) and sub1-7 (28.7g, 68.6mmol) were added to 300ml of THF and stirred and refluxed. After that, potassium carbonate (27.1g, 195.9mmol) was dissolved in 100ml of water, and after stirring sufficiently, bis(tri-tert-butylphosphine)palladium(0) (0.3g, 0.7mmol) was added. After reacting for 2 hours, it was cooled to room temperature, and the organic layer and the water layer were separated, and the organic layer was distilled. This was dissolved in chloroform again, and after washing twice with water, the organic layer was separated, stirred with anhydrous magnesium sulfate, filtered, and the filtrate was distilled under reduced pressure. The concentrated compound was purified by silica gel column chromatography to prepare 19.3 g of Compound 12. (Yield 61%, MS: [M+H]+= 486)

Synthesis Example 13

Sub13 (15g, 45.5mmol) and sub1-8 (20g, 47.8mmol) were added to 300ml of THF and stirred and refluxed. Thereafter, potassium carbonate (18.9g, 136.5mmol) was dissolved in 100ml of water, and after stirring sufficiently, bis(tri-tert-butylphosphine)palladium(0) (0.2g, 0.5mmol) was added. After reacting for 2 hours, it was cooled to room temperature, and the organic layer and the water layer were separated, and the organic layer was distilled. This was dissolved in chloroform again, and after washing twice with water, the organic layer was separated, stirred with anhydrous magnesium sulfate, filtered, and the filtrate was distilled under reduced pressure. The concentrated compound was purified by silica gel column chromatography to prepare 17.6 g of Compound 13. (Yield 66%, MS: [M+H]+= 586)

Synthesis Example 14

Sub14 (15g, 32.5mmol) and sub1-9 (14.3g, 34.1mmol) were added to 300ml of THF and stirred and refluxed. After that, potassium carbonate (13.5g, 97.4mmol) was dissolved in 100ml of water, and after stirring sufficiently, bis(tri-tert-butylphosphine)palladium(0) (0.2g, 0.3mmol) was added. After reacting for 2 hours, it was cooled to room temperature, and the organic layer and the water layer were separated, and the organic layer was distilled. This was dissolved in chloroform again, and after washing twice with water, the organic layer was separated, stirred with anhydrous magnesium sulfate, filtered, and the filtrate was distilled under reduced pressure. The concentrated compound was purified by silica gel column chromatography to prepare 17.9 g of Compound 14. (Yield 77%, MS: [M+H]+= 718)

Synthesis Example 15

Sub15 (15g, 36.9mmol) and sub1-5 (16.2g, 38.7mmol) were added to 300ml of THF and stirred and refluxed. Thereafter, potassium carbonate (15.3g, 110.6mmol) was dissolved in 100ml of water, and after stirring sufficiently, bis(tri-tert-butylphosphine)palladium(0) (0.2g, 0.4mmol) was added. After reacting for 5 hours, the mixture was cooled to room temperature, and the organic layer was distilled after separating the organic layer and the water layer. This was dissolved in chloroform again, and after washing twice with water, the organic layer was separated, stirred with anhydrous magnesium sulfate, filtered, and the filtrate was distilled under reduced pressure. The concentrated compound was purified by silica gel column chromatography to prepare 16.4 g of Compound 15. (Yield 67%, MS: [M+H]+= 663)

Synthesis Example 16

Sub16 (15g, 58.4mmol) and sub1-10 (25.7g, 61.3mmol) were added to 300ml of THF and stirred and refluxed. After that, potassium carbonate (24.2g, 175.3mmol) was dissolved in 100ml of water, and after stirring sufficiently, bis(tri-tert-butylphosphine)palladium(0) (0.3g, 0.6mmol) was added. After reacting for 3 hours, the mixture was cooled to room temperature, and the organic layer was distilled after separating the organic layer and the water layer. This was dissolved in chloroform again, and after washing twice with water, the organic layer was separated, stirred with anhydrous magnesium sulfate, filtered, and the filtrate was distilled under reduced pressure. The concentrated compound was purified by silica gel column chromatography to prepare 21.5 g of Compound 16. (Yield 72%, MS: [M+H]+= 513)

Synthesis Example 17

Sub17 (15 g, 51.6 mmol) and sub1-2 (22.7 g, 54.2 mmol) were added to 300 ml of THF and stirred and refluxed. Thereafter, potassium carbonate (21.4g, 154.8mmol) was dissolved in 100ml of water, and after stirring sufficiently, bis(tri-tert-butylphosphine)palladium(0) (0.3g, 0.5mmol) was added. After reacting for 3 hours, the mixture was cooled to room temperature, and the organic layer was distilled after separating the organic layer and the water layer. This was dissolved in chloroform again, and after washing twice with water, the organic layer was separated, stirred with anhydrous magnesium sulfate, filtered, and the filtrate was distilled under reduced pressure. The concentrated compound was purified by silica gel column chromatography to prepare 17.8 g of compound 17. (Yield 63%, MS: [M+H]+= 547)

Synthesis Example 18

Sub18 (15g, 50.7mmol) and sub1-3 (22.3g, 53.2mmol) were added to 300ml of THF and stirred and refluxed. Thereafter, potassium carbonate (21g, 152.1mmol) was dissolved in 100ml of water, and after stirring sufficiently, bis(tri-tert-butylphosphine)palladium(0) (0.3g, 0.5mmol) was added. After reacting for 2 hours, it was cooled to room temperature, and the organic layer and the water layer were separated, and the organic layer was distilled. This was dissolved in chloroform again, and after washing twice with water, the organic layer was separated, stirred with anhydrous magnesium sulfate, filtered, and the filtrate was distilled under reduced pressure. The concentrated compound was purified by silica gel column chromatography to prepare 19.6 g of compound 18. (Yield 70%, MS: [M+H]+= 552)

Synthesis Example 19

Sub19 (15g, 43.4mmol) and sub1-1 (19g, 45.5mmol) were added to 300ml of THF and stirred and refluxed. Thereafter, potassium carbonate (18g, 130.1mmol) was dissolved in 100ml of water, and after stirring sufficiently, bis(tri-tert-butylphosphine)palladium(0) (0.2g, 0.4mmol) was added. After reacting for 2 hours, it was cooled to room temperature, and the organic layer and the water layer were separated, and the organic layer was distilled. This was dissolved in chloroform again, and after washing twice with water, the organic layer was separated, stirred with anhydrous magnesium sulfate, filtered, and the filtrate was distilled under reduced pressure. The concentrated compound was purified by silica gel column chromatography to prepare 16.4 g of Compound 19. (Yield 63%, MS: [M+H]+= 602)

Synthesis Example 20

Sub20 (15g, 35.9mmol) and sub2-1 (15.8g, 37.7mmol) were added to 300ml of THF and stirred and refluxed. Thereafter, potassium carbonate (14.9g, 107.7mmol) was dissolved in 100ml of water, and after stirring sufficiently, bis(tri-tert-butylphosphine)palladium(0) (0.2g, 0.4mmol) was added. After reacting for 3 hours, the mixture was cooled to room temperature, and the organic layer was distilled after separating the organic layer and the water layer. This was dissolved in chloroform again, and after washing twice with water, the organic layer was separated, stirred with anhydrous magnesium sulfate, filtered, and the filtrate was distilled under reduced pressure. The concentrated compound was purified by silica gel column chromatography to prepare 18.1 g of Compound 20. (Yield 75%, MS: [M+H]+= 674)

Synthesis Example 21

Sub21 (15g, 34.6mmol) and sub2-2 (15.2g, 36.3mmol) were added to 300ml of THF and stirred and refluxed. Thereafter, potassium carbonate (14.3g, 103.7mmol) was dissolved in 100ml of water, and after sufficiently stirred, bis(tri-tert-butylphosphine)palladium(0) (0.2g, 0.3mmol) was added. After reacting for 5 hours, the mixture was cooled to room temperature, and the organic layer was distilled after separating the organic layer and the water layer. This was dissolved in chloroform again, and after washing twice with water, the organic layer was separated, stirred with anhydrous magnesium sulfate, filtered, and the filtrate was distilled under reduced pressure. The concentrated compound was purified by silica gel column chromatography to prepare 18.8 g of Compound 21. (Yield 79%, MS: [M+H]+= 690)

Synthesis Example 22

Sub22 (15g, 35.7mmol) and sub2-3 (15.7g, 37.5mmol) were added to 300ml of THF and stirred and refluxed. Thereafter, potassium carbonate (14.8g, 107.2mmol) was dissolved in 100ml of water, and after stirring sufficiently, bis(tri-tert-butylphosphine)palladium(0) (0.2g, 0.4mmol) was added. After reacting for 5 hours, the mixture was cooled to room temperature, and the organic layer was distilled after separating the organic layer and the water layer. This was dissolved in chloroform again, and after washing twice with water, the organic layer was separated, stirred with anhydrous magnesium sulfate, filtered, and the filtrate was distilled under reduced pressure. The concentrated compound was purified by silica gel column chromatography to prepare 16.9 g of Compound 22. (Yield 70%, MS: [M+H]+= 676)

Synthesis Example 23

Sub23 (15g, 31.9mmol) and sub2-2 (14g, 33.5mmol) were added to 300ml of THF and stirred and refluxed. After that, potassium carbonate (13.2g, 95.8mmol) was dissolved in 100ml of water, and after stirring sufficiently, bis(tri-tert-butylphosphine)palladium(0) (0.2g, 0.3mmol) was added. After reacting for 2 hours, it was cooled to room temperature, and the organic layer and the water layer were separated, and the organic layer was distilled. This was dissolved in chloroform again, and after washing twice with water, the organic layer was separated, stirred with anhydrous magnesium sulfate, filtered, and the filtrate was distilled under reduced pressure. The concentrated compound was purified by silica gel column chromatography to prepare 17.6 g of Compound 23. (Yield 76%, MS: [M+H]+= 726)

Synthesis Example 24

Sub24 (15g, 33.9mmol) and sub2-2 (14.9g, 35.6mmol) were added to 300ml of THF and stirred and refluxed. After that, potassium carbonate (14g, 101.6mmol) was dissolved in 100ml of water, and after stirring sufficiently, bis(tri-tert-butylphosphine)palladium(0) (0.2g, 0.3mmol) was added. After reacting for 3 hours, the mixture was cooled to room temperature, and the organic layer was distilled after separating the organic layer and the water layer. This was dissolved in chloroform again, and after washing twice with water, the organic layer was separated, stirred with anhydrous magnesium sulfate, filtered, and the filtrate was distilled under reduced pressure. The concentrated compound was purified by silica gel column chromatography to prepare 15.4 g of Compound 24. (Yield 65%, MS: [M+H]+= 699)

Synthesis Example 25

Sub25 (15g, 35.8mmol) and sub2-4 (15.7g, 37.6mmol) were added to 300ml of THF and stirred and refluxed. After that, potassium carbonate (14.8g, 107.4mmol) was dissolved in 100ml of water, and after stirring sufficiently, bis(tri-tert-butylphosphine)palladium(0) (0.2g, 0.4mmol) was added. After reacting for 3 hours, the mixture was cooled to room temperature, and the organic layer was distilled after separating the organic layer and the water layer. This was dissolved in chloroform again, and after washing twice with water, the organic layer was separated, stirred with anhydrous magnesium sulfate, filtered, and the filtrate was distilled under reduced pressure. The concentrated compound was purified by silica gel column chromatography to prepare 18.3 g of Compound 25. (Yield 76%, MS: [M+H]+= 675)

Synthesis Example 26

Sub26 (15g, 33.9mmol) and sub2-5 (14.9g, 35.6mmol) were added to 300ml of THF and stirred and refluxed. After that, potassium carbonate (14g, 101.6mmol) was dissolved in 100ml of water, and after stirring sufficiently, bis(tri-tert-butylphosphine)palladium(0) (0.2g, 0.3mmol) was added. After reacting for 5 hours, the mixture was cooled to room temperature, and the organic layer was distilled after separating the organic layer and the water layer. This was dissolved in chloroform again, and after washing twice with water, the organic layer was separated, stirred with anhydrous magnesium sulfate, filtered, and the filtrate was distilled under reduced pressure. The concentrated compound was purified by silica gel column chromatography to prepare 17.7 g of Compound 26. (Yield 75%, MS: [M+H]+= 699)

Synthesis Example 27

Sub27 (15g, 28.6mmol) and sub2-6 (12.5g, 30mmol) were added to 300ml of THF and stirred and refluxed. Thereafter, potassium carbonate (11.8g, 85.7mmol) was dissolved in 100ml of water, and after sufficiently stirred, bis(tri-tert-butylphosphine)palladium(0) (0.1g, 0.3mmol) was added. After reacting for 5 hours, the mixture was cooled to room temperature, and the organic layer was distilled after separating the organic layer and the water layer. This was dissolved in chloroform again, and after washing twice with water, the organic layer was separated, stirred with anhydrous magnesium sulfate, filtered, and the filtrate was distilled under reduced pressure. The concentrated compound was purified by silica gel column chromatography to prepare 15.2 g of Compound 27. (Yield 68%, MS: [M+H]+= 781)

Synthesis Example 28

Sub28 (15g, 45.3mmol) and sub2-7 (19.9g, 47.6mmol) were added to 300ml of THF and stirred and refluxed. Thereafter, potassium carbonate (18.8g, 136mmol) was dissolved in 100ml of water, and after stirring sufficiently, bis(tri-tert-butylphosphine)palladium(0) (0.2g, 0.5mmol) was added. After reacting for 5 hours, the mixture was cooled to room temperature, and the organic layer was distilled after separating the organic layer and the water layer. This was dissolved in chloroform again, and after washing twice with water, the organic layer was separated, stirred with anhydrous magnesium sulfate, filtered, and the filtrate was distilled under reduced pressure. The concentrated compound was purified by silica gel column chromatography to prepare 20.2 g of compound 28. (Yield 76%, MS: [M+H]+= 587)

Synthesis Example 29

Sub29 (15g, 45.3mmol) and sub2-3 (19.9g, 47.6mmol) were added to 300ml of THF and stirred and refluxed. Thereafter, potassium carbonate (18.8g, 136mmol) was dissolved in 100ml of water, and after stirring sufficiently, bis(tri-tert-butylphosphine)palladium(0) (0.2g, 0.5mmol) was added. After reacting for 5 hours, the mixture was cooled to room temperature, and the organic layer was distilled after separating the organic layer and the water layer. This was dissolved in chloroform again, and after washing twice with water, the organic layer was separated, stirred with anhydrous magnesium sulfate, filtered, and the filtrate was distilled under reduced pressure. The concentrated compound was purified by silica gel column chromatography to prepare 17.5 g of Compound 29. (Yield 66%, MS: [M+H]+= 587)

Sub30 (15g, 53.6mmol) and sub2-7 (23.6g, 56.3mmol) were added to 300ml of THF and stirred and refluxed. After that, potassium carbonate (22.2g, 160.9mmol) was dissolved in 100ml of water, and after sufficiently stirred, bis(tri-tert-butylphosphine)palladium(0) (0.3g, 0.5mmol) was added. After reacting for 3 hours, the mixture was cooled to room temperature, and the organic layer was distilled after separating the organic layer and the water layer. This was dissolved in chloroform again, and after washing twice with water, the organic layer was separated, stirred with anhydrous magnesium sulfate, filtered, and the filtrate was distilled under reduced pressure. The concentrated compound was purified by silica gel column chromatography to prepare 21.2 g of compound 30. (Yield 74%, MS: [M+H]+= 536)

Sub17 (15 g, 51.6 mmol) and sub2-8 (22.7 g, 54.2 mmol) were added to 300 ml of THF and stirred and refluxed. Thereafter, potassium carbonate (21.4g, 154.8mmol) was dissolved in 100ml of water, and after stirring sufficiently, bis(tri-tert-butylphosphine)palladium(0) (0.3g, 0.5mmol) was added. After reacting for 3 hours, the mixture was cooled to room temperature, and the organic layer was distilled after separating the organic layer and the water layer. This was dissolved in chloroform again, and after washing twice with water, the organic layer was separated, stirred with anhydrous magnesium sulfate, filtered, and the filtrate was distilled under reduced pressure. The concentrated compound was purified by silica gel column chromatography to prepare 17.8 g of Compound 31. (Yield 63%, MS: [M+H]+= 547)

[Experimental Example]

Experimental Example 1-1

A glass substrate coated with ITO (Indium Tin Oxide) to a thickness of 1,400 Å was put in distilled water in which detergent was dissolved and washed with ultrasonic waves. At this time, a Fischer Co. product was used as the detergent, and distilled water filtered through a second filter of a Millipore Co. product was used as the distilled water. After washing the ITO for 30 minutes, ultrasonic cleaning was performed twice with distilled water for 10 minutes. After washing with distilled water, ultrasonic cleaning was performed with solvents such as isopropyl alcohol, acetone, and methanol, dried, and transported to a plasma cleaner. In addition, after cleaning the substrate for 5 minutes using oxygen plasma, the substrate was transferred to a vacuum deposition machine.

The following compound HI-1 was formed to a thickness of 1150 Å as a hole injection layer on the prepared ITO transparent electrode, but the following compound A-1 was p-doped at a concentration of 1.5%. On the hole injection layer, the following HT-1 compound was vacuum deposited to form a hole transport layer having a thickness of 800 Å. Subsequently, compound EB-1 was thermally vacuum deposited to a thickness of 150 Å as an auxiliary hole transport layer. Subsequently, as a light emitting layer, compounds represented by Chemical Formulas BH and BD were vacuum deposited to a thickness of 200 Å at a weight ratio of 25:1. Subsequently, Compound 1 synthesized according to the present invention was vacuum deposited to a thickness of 50 Å as a hole blocking layer. Subsequently, a compound represented by the following formula ET-1 and a compound represented by the following LiQ were thermally vacuum deposited to a thickness of 310 Å at a weight ratio of 1:1 as a layer capable of simultaneously transporting and injecting electrons. An organic light emitting diode was manufactured by sequentially depositing lithium fluoride (LiF) to a thickness of 12 Å and aluminum to a thickness of 1000 Å to form a cathode on the electron transport and electron injection layers.

Experimental Examples 1-2 to 1-31

Organic light-emitting devices of Experimental Examples 1-2 to 1-31 were prepared in the same manner as in Experimental Example 1-1, except that the compounds shown in Table 1 were used instead of Compound 1.

Comparative Experimental Examples 1-1 to 1-4

Organic light emitting devices of Comparative Experimental Examples 1-1 to 1-4 were prepared in the same manner as in Experimental Example 1-1, except that the following compounds B-1 to B-4 were used instead of Compound 1.

When a current of 10 mA/cm ² was applied to the organic light emitting devices prepared in Experimental Examples 1-1 to 1-31 and Comparative Experimental Examples 1-1 to 1-4, voltage and efficiency were measured, and the results are shown in the table below. 1. The lifetime T95 means the time required for the luminance to decrease from the initial luminance (1000 nit) to 95%.

compound Voltage (V) Efficiency (cd/A) Life T95 (hr) luminescent color Experimental Example 1-1 compound 1 3.44 5.00 179 blue Experimental Example 1-2 compound 2 3.47 5.02 182 blue Experimental Example 1-3 compound 3 3.48 4.97 187 blue Experimental Example 1-4 compound 4 3.45 5.03 169 blue Experimental Example 1-5 compound 5 3.44 4.97 175 blue Experimental Example 1-6 compound 6 3.49 4.93 177 blue Experimental Example 1-7 compound 7 3.41 5.00 237 blue Experimental Example 1-8 compound 8 3.37 5.01 238 blue Experimental Example 1-9 compound 9 3.42 5.13 232 blue Experimental Example 1-10 compound 10 3.45 5.02 207 blue Experimental Example 1-11 compound 11 3.46 5.03 223 blue Experimental Example 1-12 compound 12 3.59 4.83 217 blue Experimental Example 1-13 compound 13 3.67 4.89 207 blue Experimental Example 1-14 compound 14 3.59 4.86 216 blue Experimental Example 1-15 compound 15 3.59 4.89 206 blue Experimental Example 1-16 compound 16 3.66 4.86 205 blue Experimental Example 1-17 compound 17 3.67 4.93 219 blue Experimental Example 1-18 compound 18 3.66 4.84 228 blue Experimental Example 1-19 compound 19 3.62 4.85 223 blue Experimental Example 1-20 compound 20 3.45 5.03 164 blue Experimental Example 1-21 compound 21 3.52 4.98 159 blue Experimental Example 1-22 compound 22 3.53 4.94 129 blue Experimental Example 1-23 compound 23 3.56 4.87 163 blue Experimental Example 1-24 compound 24 3.44 4.96 211 blue Experimental Example 1-25 compound 25 3.48 5.00 203 blue Experimental Example 1-26 compound 26 3.50 5.04 215 blue Experimental Example 1-27 compound 27 3.46 5.05 223 blue Experimental Example 1-28 compound 28 3.48 4.82 186 blue Experimental Example 1-29 compound 29 3.49 4.90 197 blue Experimental Example 1-30 compound 30 3.59 4.80 202 blue Experimental Example 1-31 compound 31 3.60 4.88 159 blue Comparative Experimental Example 1-1 B-1 3.91 4.11 42 blue Comparative Experimental Example 1-2 B-2 3.87 4.07 64 blue Comparative Experimental Example 1-3 B-3 3.78 4.42 109 blue Comparative Experimental Example 1-4 B-4 3.71 4.37 113 blue

As shown in the experimental example, the compound of the present invention was used as a hole blocking layer of the blue light emitting layer. It was confirmed that the organic light emitting device using the compound of the present invention exhibits improvement effects in terms of driving voltage, efficiency and lifespan when compared to the compounds of Comparative Experimental Examples. Compared to the compounds of the present invention, the voltage is lower than that of Comparative Experimental Examples 1-1 to 1-4 using compounds B-1 to B-4 having different bonding positions and substitution positions of benzofuran and fluoranthene, and lower voltage and efficiency high, long life.

It can be seen that the compound of the present invention contributed more to the ability of the hole blocking layer in the device compared to the compound of the comparative example, and passed the electrons from the electron transport layer to the light emitting layer well, thereby affecting the balanced charge flow in the device, which affected the efficiency. However, it can be seen that the lifespan aspect has been improved.

1: substrate
2: anode
3: organic material layer
4: cathode
5: hole injection layer
6: hole transport layer
7: hole transport auxiliary layer
8: light emitting layer
9: hole blocking layer
10: electron injection and transport layer

Claims (14)

A compound of Formula 1:
[Formula 1]
Ar-LZ
In Formula 1,
L is a direct bond, a substituted or unsubstituted arylene group, or a substituted or unsubstituted heteroarylene group,
Z is Formula 2 or 3 below,
[Formula 2]

[Formula 3]

Formula 2 or 3 is substituted or unsubstituted with a deuterium, a halogen group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heteroaryl group, except for the L-binding site,
Ar is hydrogen, heavy hydrogen, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heteroaryl group, a substituted or unsubstituted amine group, or a substituted or unsubstituted aryl group. It is a cyclic phosphine oxide group,
When L is a direct bond, Ar is not hydrogen or deuterium.
The compound according to claim 1, wherein Formula 1 is any one of the structures of Formulas 1-1 to 1-4 below:
[Formula 1-1] [Formula 1-2]

[Formula 1-3] [Formula 1-4]

In Formulas 1-1 to 1-4, Ar and L are as defined in Formula 1 above. The compound according to claim 1, wherein Chemical Formula 1 is any one of the following Chemical Formulas 1-5 to 1-8:
[Formula 1-5] [Formula 1-6]

[Formula 1-7] [Formula 1-8]

In Chemical Formulas 1-5 to 1-8, Ar and L are as defined in Chemical Formula 1 above. The compound according to claim 1, wherein Chemical Formula 1 is any one of the following Chemical Formulas 1-1-1 to 1-1-12:
[Formula 1-1-1] [Formula 1-1-2] [Formula 1-1-3]

[Formula 1-1-4] [Formula 1-1-5] [Formula 1-1-6]

[Formula 1-1-7] [Formula 1-1-8] [Formula 1-1-9]

[Formula 1-1-10] [Formula 1-1-11] [Formula 1-1-12]

In Formulas 1-1-1 to 1-1-12, L and Ar are as defined in Formula 1 above. The compound according to claim 1, wherein Chemical Formula 1 is any one of the following Chemical Formulas 2-1-1 to 2-1-12:
[Formula 2-1-1] [Formula 2-1-2] [Formula 2-1-3]

[Formula 2-1-4] [Formula 2-1-5] [Formula 2-1-6]

[Formula 2-1-7] [Formula 2-1-8] [Formula 2-1-9]

[Formula 2-1-10] [Formula 2-1-11] [Formula 2-1-12]

In Formulas 2-1-1 to 2-1-12, L and Ar are as defined in Formula 1 above. The compound according to claim 1, wherein L is a direct bond, a deuterium-substituted or unsubstituted arylene group having 6 to 30 carbon atoms, or a deuterium-substituted or unsubstituted heteroarylene group having 3 to 30 carbon atoms. The compound according to claim 1, wherein Ar is an aryl group unsubstituted or substituted with deuterium, or a heteroaryl group unsubstituted or substituted with deuterium. The compound of claim 1, wherein Formula 2 or 3 is unsubstituted or substituted with deuterium, except for the L-binding site. The compound of claim 1, wherein Formula 1 is any one of the following structural formulas:

a first electrode; a second electrode provided to face the first electrode; and one or more organic material layers provided between the first electrode and the second electrode, wherein at least one of the organic material layers includes the compound according to any one of claims 1 to 9. . The organic light emitting device of claim 10, wherein the first electrode is an anode, the second electrode is a cathode, the organic material layer includes a light emitting layer, and an organic material layer containing the compound is provided between the cathode and the light emitting layer. The organic light emitting device of claim 10, wherein the organic material layer includes a hole blocking layer, and the hole blocking layer includes the compound. The organic light emitting device of claim 12, comprising an electron injection layer, an electron transport layer, or an electron injection and transport layer between the hole blocking layer and the second electrode. The organic light emitting device of claim 13, wherein the hole blocking layer and the electron injection and transport layer are in contact with each other.

Images