Triazine compound and application thereof

Abstract

The invention provides a triazine compound and application thereof, and belongs to the technical field of organic electroluminescence. The triazine compound has a structure as shown in a formula I. According to the invention, the structure of the triazine compound is designed, the obtained triazine compound has excellent performance, and the organic electroluminescent device prepared by using the triazine compound as a material of a luminescent layer has relatively low driving voltage, relatively high current efficiency and relatively long service life.

Description

Technical Field

[0001] The present invention belongs to the technical field of organic electroluminescence, and particularly relates to a triazine compound and its application. Background Art

[0002] An organic light emitting diode (OLED) is a display component that utilizes the phenomenon of self-luminescence. It has a large viewing angle. Compared with liquid crystal display components, OLED components are thinner, lighter, have a faster response speed, and can achieve flexible display. Therefore, it is highly anticipated as an application for full-color display components or lighting devices.

[0003] Generally, the organic light emitting phenomenon refers to the phenomenon of converting electrical energy into light energy by using organic substances. An organic light emitting diode that utilizes the organic light emitting phenomenon usually has a structure including an anode, a cathode, and an organic layer sandwiched between the anode and the cathode.

[0004] Among them, in order to improve the efficiency and stability of the organic light emitting diode, the organic layer is mostly composed of a multi-layer structure formed by different substances respectively. For example, it can be composed of a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer, etc. If a voltage is applied between the two electrodes in the structure of such an organic light emitting diode, holes in the anode will be injected into the organic layer, and electrons in the cathode will also be injected into the organic layer. When the injected holes and electrons meet, excitons are formed. When the excitons release energy and transition to the ground state, photons will be emitted, thereby generating light. Such an organic light emitting diode is widely recognized as having characteristics such as self-luminescence, high brightness, high efficiency, low driving voltage, wide viewing angle, high contrast, and high speed responsiveness.

[0005] Currently, the research on organic electroluminescent materials has been widely carried out in the academic and industrial fields. Among them, improving the device lifetime and current efficiency and reducing the driving voltage have always restricted the development of OLED devices. Therefore, designing and finding a compound as a new OLED material to overcome the deficiencies that occur in the actual application process is the focus and future research and development trend in the research work of OLED materials. Summary of the Invention

[0006] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a triazine compound and its application. The present invention designs through the structure of the triazine compound, and the obtained triazine compound has excellent properties and is suitable as a material for the light emitting layer in an organic electroluminescent device. The organic electroluminescent device obtained thereby has a lower driving voltage, a higher current efficiency, and a longer lifetime.

[0007] To achieve this purpose, the present invention adopts the following technical solutions:

[0008] In a first aspect, the present invention provides a triazine compound, and the triazine compound has a structure shown in the following formula I:

[0009]

[0010] Wherein, R1, R2, R3, R4, R5, R6, R7, R8, R9, R 10 、R 11 、R 12 、R 13 are each independently selected from any one of a hydrogen atom, a deuterium atom, a substituted or unsubstituted C1-C12 alkyl group, a substituted or unsubstituted C1-C12 alkoxy group, a substituted or unsubstituted C6-C30 aryl group, and a substituted or unsubstituted C3-C30 heteroaryl group;

[0011] Ar1 is selected from any one of a substituted or unsubstituted C6-C30 aryl group and a substituted or unsubstituted C3-C30 heteroaryl group;

[0012] R1, R2, R3, R4, R5, R6, R7, R8, R9, R 10 、R 11 、R 12 、R 13 、Ar1, the substituents in the substitution are each independently selected from any one of a deuterium atom (-D), -F, -CN, a C1-C5 alkyl group, a C1-C5 alkoxy group, or a C6-C12 aryl group;

[0013] n is an integer between 1 and 4;

[0014] The hydrogen atoms in the compound of formula I can each independently be substituted by a deuterium atom (-D), -F, -CN, a C1-C12 alkyl group, a C1-C12 alkoxy group, a C6-C30 aryl group, or a C3-C30 heteroaryl group.

[0015] By designing the structure of the triazine compound, the present invention enables the triazine compound with a specific structure to have good thermal stability and excellent luminescence properties, and can be used to prepare an organic electroluminescent device, especially as a luminescent layer material in the organic electroluminescent device, which can effectively reduce the driving voltage of the organic electroluminescent device and improve the current efficiency and lifespan of the organic electroluminescent device.

[0016] It should be noted that in the present invention, "D" represents a deuterium atom. Where not separately indicated in the present invention, H and hydrogen therein both represent "protium", and the same applies hereinafter.

[0017] In the present invention, C1-C12 can be C1, C2, C3, C4, C5, C6, C7, C8, C9, C10, C11, or C12.

[0018] C6-C30 can be C6, C8, C10, C12, C13, C15, C18, C20, C24, C28 or C30, etc.

[0019] C3-C30 can be C3, C4, C5, C7, C9, C11, C14, C15, C16, C18, C20, C22, C25, C27 or C30, etc.

[0020] C1-C5 can be C1, C2, C3, C4 or C5.

[0021] C6-C12 can be C6, C8, C10 or C12, etc.

[0022] In the present invention, the C1-C12 alkyl group illustratively includes but is not limited to: methyl, ethyl, propyl, isopropyl, butyl, tert-butyl, pentyl, tert-pentyl, n-hexyl, cyclohexyl and the like.

[0023] The C1-C12 alkoxy groups include, but are not limited to, methoxy, ethoxy, propoxy, isopropoxy, butoxy, tert-butoxy, pentyloxy, tert-pentyloxy, n-hexyloxy, cyclohexyloxy, and the like.

[0024] The C6-C30 aromatic group refers to the general term for a monovalent group remaining after removing a hydrogen atom from the aromatic carbon nucleus of an aromatic hydrocarbon molecule, which may be a monocyclic aromatic group or a condensed-ring aromatic group, and illustratively includes but is not limited to: phenyl, biphenyl, terphenyl, naphthyl, anthracenyl, indenyl, fluorenyl, perylenyl, phenanthrenyl, pyrenyl, fluoranthenyl or triphenylenyl, etc.

[0025] The C3-C30 heteroaryl group refers to a general term for groups in which one or more aromatic carbon atoms in an aromatic group are replaced by heteroatoms, wherein the heteroatoms include but are not limited to oxygen, sulfur and nitrogen atoms, and the heteroaryl group may be a monocyclic heteroaryl group or a condensed ring heteroaryl group, and illustratively include but are not limited to pyridyl, pyrimidinyl, benzofuranyl, benzothiophenyl, dibenzofuranyl, dibenzothiophenyl, carbazolyl, diarylideneamine, benzofuranocarbazolyl, benzofuranothiophenyl, triazine and the like.

[0026] The C1-C5 alkyl group illustratively includes, but is not limited to, methyl, ethyl, propyl, isopropyl, butyl, tert-butyl, pentyl or tert-pentyl, etc.

[0027] The C1-C5 alkoxy groups illustratively include, but are not limited to, methoxy, ethoxy, propoxy, isopropoxy, butoxy, tert-butoxy, pentyloxy, or t-pentyloxy.

[0028] The following are the preferred technical solutions of the present invention, but do not limit the technical solutions provided by the present invention. Through the following preferred technical solutions, the objectives and beneficial effects of the present invention can be better achieved and realized.

[0029] As a preferred technical solution of the present invention, the C1-C12 alkyl group is selected from any one of methyl, ethyl, tert-butyl, cyclopentyl, cyclohexyl, octyl, adamantyl, preferably any one of methyl, ethyl or tert-butyl.

[0030] As a preferred technical solution of the present invention, the C1-C12 alkoxy group is selected from any one of methoxy, ethoxy, propoxy, butoxy, pentyloxy, hexyloxy or octyloxy, preferably methoxy or ethoxy.

[0031] As a preferred technical solution of the present invention, the C6-C30 aryl group is selected from any one of phenyl, biphenyl, naphthyl, terphenyl, anthryl, phenanthryl, fluorenyl, benzofluorenyl, dibenzofluorenyl, naphthofluorenyl, pyrenyl, perylenyl, spirofluorene, triphenylene, fluoranthenyl, hydrobenzanthryl, indeno[1,2-b]fluorene, benzo[1,2-b]indeno[1,2-b]fluorene, dibenzo[1,2-b]indeno[1,2-b]fluorene, naphthofluorenyl or benzonaphthofluorenyl, preferably any one of phenyl, biphenyl, naphthyl or terphenyl.

[0032] As a preferred technical solution of the present invention, the C3-C30 heteroaryl group is selected from any one of triazinyl, pyridyl, pyrimidinyl, dibenzofuranyl, dibenzothiophenyl, naphthobenzofuranyl, naphthobenzothiophenyl, dinaphthofuranyl, dinaphthothiophenyl, carbazolyl, phenylcarbazolyl, carbazolylphenyl, preferably any one of dibenzofuranyl, dibenzothiophenyl or carbazolyl.

[0033] As a preferred technical solution of the present invention, the C1-C5 alkyl group is selected from any one of methyl, ethyl, propyl or tert-butyl.

[0034] As a preferred technical solution of the present invention, the C1-C5 alkoxy group is selected from any one of methoxy, ethoxy, propoxy or butoxy.

[0035] As a preferred technical solution of the present invention, the C6-C12 aryl group is selected from any one of phenyl, naphthyl or biphenyl.

[0036] As a preferred technical solution of the present invention, the R1, R2, R3, R4, R5, R6, R7, R8, R9, R 10 、R 11 、R 12 、R 13Each independently selected from any one of a hydrogen atom, a deuterium atom, a methyl group, an ethyl group, a tert-butyl group, a methoxy group, an ethoxy group, a phenyl group, a naphthyl group, a biphenyl group, a pyridyl group, a dibenzofuranyl group, a dibenzothiophenyl group or a carbazolyl group, preferably a hydrogen atom or a deuterium atom.

[0037] As a preferred technical solution of the present invention, Ar1 is selected from any one of the following substituted or unsubstituted groups:

[0038] Any one of a phenyl group, a naphthyl group, a biphenyl group or a fluorene group;

[0039] The substituents of the substitution are each independently selected from any one of a deuterium atom, -F, -CN, a methyl group, an ethyl group, a tert-butyl group, a methoxy group, an ethoxy group or a phenyl group.

[0040] Preferably, the substituents of the substitution are each independently selected from any one of a deuterium atom, -F, -CN, a methyl group or a phenyl group.

[0041] As a preferred technical solution of the present invention, n is selected from 1 or 2, preferably 1.

[0042] As a preferred technical solution of the present invention, the hydrogen atoms in the compound of formula I can each independently be substituted by at least one of a deuterium atom, -F, -CN, a methyl group, an ethyl group, a tert-butyl group, a methoxy group, an ethoxy group or a propoxy group.

[0043] As a preferred technical solution of the present invention, the triazine compound has a structure shown in formula I-1 as follows:

[0044]

[0045] Wherein, Ar1 and n have the same definitions as above.

[0046] As a preferred technical solution of the present invention, the triazine compound includes any one of the following compounds 1-60:

[0047]

[0048]

[0049]

[0050] As a preferred technical solution of the present invention, the triazine compound includes the following compounds:

[0051]

[0052] The present invention lists some specific structural forms of the triazine compounds, but the triazine compounds of the present invention are not limited to these listed chemical structures. Any structure based on the structure shown in Formula I, where R1, R2, R3, R4, R5, R6, R7, R8, R9, R 10 、R 11 、R 12 、R 13 、Ar1, Ar2, and n satisfy the above-defined conditions should be included.

[0053] It should be noted that the present invention has no special restrictions on the preparation methods of the above triazine compounds, and the commonly used preparation methods in the art are applicable.

[0054] In a second aspect, the present invention provides an organic electroluminescent device, which includes the triazine compound as described in the first aspect.

[0055] Preferably, the organic electroluminescent device includes a first electrode, a second electrode, and an organic layer disposed between the first electrode and the second electrode;

[0056] The material of the organic layer includes the triazine compound as described in the first aspect.

[0057] Preferably, the organic layer includes a light-emitting layer;

[0058] The material of the light-emitting layer includes the triazine compound as described in the first aspect.

[0059] In a third aspect, the present invention provides a display device, which includes the organic electroluminescent device as described in the second aspect.

[0060] Compared with the prior art, the present invention has the following beneficial effects:

[0061] By designing the structure of the triazine compound, the present invention obtains a triazine compound with excellent performance. This triazine compound has good light-emitting performance and can be used to prepare an organic electroluminescent device, especially as the material of the light-emitting layer in the organic electroluminescent device, which can effectively reduce the driving voltage of the organic electroluminescent device and improve the current efficiency and lifespan of the organic electroluminescent device. Specific Embodiments

[0062] For ease of understanding the present invention, the present invention lists preparation examples and examples as follows. Those skilled in the art should understand that the preparation examples and examples are only for helping to understand the present invention and should not be regarded as specific limitations on the present invention.

[0063] Synthesis Example 1

[0064] This example provides compound 1 and its synthesis method, and the synthesis method is as follows:

[0065] (1) Synthesis of intermediate A1

[0066]

[0067] 0.1 mol of boric acid 1, 0.1 mol of triazine chloride 1, 0.002 mol of tetrakis(triphenylphosphine)palladium, 0.12 mol of potassium carbonate were added, and then 600 mL of toluene, 300 mL of ethanol, and 150 mL of water were added to the reaction flask. The flask was evacuated and replaced with argon 5 times, heated to reflux, and reacted for 15 h. After cooling to room temperature, water was added for liquid separation, and the organic layer was washed until neutral. The organic phase was passed through a silica gel column and eluted with toluene. The obtained eluate was concentrated and recrystallized with toluene and ethanol to obtain intermediate A1.

[0068] Intermediate A1 was tested, and the mass-to-charge ratio (m / z) was measured to be 457.11.

[0069] (2) Synthesis of compound 1

[0070]

[0071] 0.1 mol of carbazole 1, 0.1 mol of intermediate A1, 0.001 mol of bis(dibenzylideneacetone)palladium, 0.003 mol of 2-(dicyclohexylphosphino)-2′,6′-dimethoxybiphenyl (SPhos), 0.3 mol of sodium tert-butoxide, and 3000 mL of dry xylene were added to the reaction flask. After evacuating and replacing with nitrogen 5 times, the temperature was raised to reflux and reacted for 12 h. After cooling to room temperature, water was added for liquid separation, and the organic layer was washed until neutral. The organic phase was passed through a silica gel column and eluted with toluene. The obtained eluate was concentrated and recrystallized with toluene and ethanol to obtain compound 1.

[0072] Compound 1 was tested, and the mass-to-charge ratio (m / z) was measured to be 775.25.

[0073] Synthesis example 2

[0074] This example provides compound 2 and its synthesis method, and the synthesis method is as follows:

[0075] (1) Synthesis of intermediate A2

[0076]

[0077] Referring to the synthesis method of intermediate A1 provided in step (1) of synthesis example 1, boric acid 2 was used to replace boric acid 1 in synthesis example 1, and other conditions remained unchanged to obtain intermediate A2.

[0078] Intermediate A2 was tested and the measured mass-to-charge ratio (m / z) was 457.11.

[0079] (2) Synthesis of Compound 2

[0080]

[0081] Referring to the synthesis method of Compound 1 provided in step (2) of Synthesis Example 1, Intermediate A2 was used to replace Intermediate A1 in Synthesis Example 1, and other conditions remained unchanged to obtain Compound 2.

[0082] Compound 2 was tested and the measured mass-to-charge ratio (m / z) was 775.25.

[0083] Synthesis Example 3

[0084] This example provides Compound 3 and its synthesis method, and the synthesis method is as follows:

[0085] (1) Synthesis of Intermediate A3

[0086]

[0087] Referring to the synthesis method of Intermediate A1 provided in step (1) of Synthesis Example 1, Boric acid 3 was used to replace Boric acid 1 in Synthesis Example 1, and other conditions remained unchanged to obtain Intermediate A3.

[0088] Intermediate A3 was tested and the measured mass-to-charge ratio (m / z) was 457.11.

[0089] (2) Synthesis of Compound 3

[0090]

[0091] Referring to the synthesis method of Compound 1 provided in step (2) of Synthesis Example 1, Intermediate A3 was used to replace Intermediate A1 in Synthesis Example 1, the reaction time was changed to 20 hours, and other conditions remained unchanged to obtain Compound 3.

[0092] Compound 3 was tested and the measured mass-to-charge ratio (m / z) was 775.25.

[0093] Synthesis Example 4

[0094] This example provides Compound 8 and its synthesis method, and the synthesis method is as follows:

[0095] (1) Synthesis of Intermediate A4

[0096]

[0097] Referring to the synthesis method of intermediate A1 provided in step (1) of Synthesis Example 1, replace boric acid 1 in Synthesis Example 1 with boric acid 4, and keep other conditions unchanged to obtain intermediate A4.

[0098] Intermediate A4 was tested, and the measured mass-to-charge ratio (m / z) was 457.11.

[0099] (2) Synthesis of Compound 8

[0100]

[0101] Referring to the synthesis method of Compound 1 provided in step (2) of Synthesis Example 1, replace intermediate A1 in Synthesis Example 1 with intermediate A4, change the reaction time to 20 hours, and keep other conditions unchanged to obtain Compound 8.

[0102] Compound 8 was tested, and the measured mass-to-charge ratio (m / z) was 775.25.

[0103] Synthesis Example 5

[0104] This example provides Compound 41 and its synthesis method, and the synthesis method is as follows:

[0105] (1) Synthesis of Intermediate A5

[0106]

[0107] Referring to the synthesis method of intermediate A1 provided in step (1) of Synthesis Example 1, replace trichlorotriazine 1 in Synthesis Example 1 with trichlorotriazine 2, and keep other conditions unchanged to obtain intermediate A5.

[0108] Intermediate A5 was tested, and the measured mass-to-charge ratio (m / z) was 533.14.

[0109] (2) Synthesis of Compound 41

[0110]

[0111] Referring to the synthesis method of Compound 1 provided in step (2) of Synthesis Example 1, replace intermediate A1 in Synthesis Example 1 with intermediate A5, change the reaction time to 20 hours, and keep other conditions unchanged to obtain Compound 41.

[0112] Compound 41 was tested, and the measured mass-to-charge ratio (m / z) was 851.28.

[0113] Synthesis Example 6

[0114] This example provides Compound 51 and its synthesis method, and the synthesis method is as follows:

[0115] (1) Synthesis of Intermediate A6

[0116] This example provides a method for synthesizing Intermediate A6, and the synthesis method is as follows:

[0117]

[0118] Referring to the synthesis method of Intermediate A1 provided in step (1) of Synthesis Example 1, using cyanuric chloride 3 to replace cyanuric chloride 1 in Synthesis Example 1, with other conditions unchanged, Intermediate A6 is obtained.

[0119] Intermediate A6 was tested, and the measured mass-to-charge ratio (m / z) was 573.17.

[0120] (2) Synthesis of Compound 51

[0121]

[0122] Referring to the synthesis method of Compound 1 provided in step (2) of Synthesis Example 1, using Intermediate A6 to replace Intermediate A1 in Synthesis Example 1, with the reaction time changed to 20 hours and other conditions unchanged, Compound 51 is obtained.

[0123] Compound 51 was tested, and the measured mass-to-charge ratio (m / z) was 891.31.

[0124] For compounds without specific synthesis steps listed, they can be prepared by combining the above examples with common general knowledge in the art.

[0125] The specific structures of the compounds used in the following device examples and device comparative examples are as follows:

[0126]

[0127] Application Example 1

[0128] This application example provides a green organic electroluminescent device, using the compound provided by the present invention as the host material of the light-emitting layer. The structure of the green organic electroluminescent device is as follows:

[0129] ITO / HT (60 nm) / EB-1 (20 nm) / Host material: PGD-1 [5%] (35 nm) / TPBI (25 nm) / LiF (0.5 nm) / Al (150 nm), where ITO is indium tin oxide, LiF is lithium fluoride, and Al is aluminum; PGD-1 [5%] refers to the doping ratio of the dye, that is, the volume ratio of the host material to the dye PGD-1 is 95:5; HT is a hole transport material, and EB-1 is an electron blocking layer.

[0130] The preparation method of the organic electroluminescent device is as follows:

[0131] Place the material in a vacuum chamber, evacuate the air to 1×10-5~1×10-6 Pa, and then vacuum deposit it onto the cleaned ITO substrate in sequence to prepare an OLED device.

[0132] The host material of the light-emitting layer of the organic electroluminescent device provided in this application example is Compound 1.

[0133] Application Examples 2-6, Comparative Application Example 1

[0134] Application Examples 2-6 and Comparative Application Example 1 respectively provide a green organic electroluminescent device. The difference from Application Example 1 is only that the host material of the light-emitting layer is replaced with other compounds (see Table 1 below), and other preparation steps and conditions are the same as those in Application Example 1.

[0135] Performance Test

[0136] Test the voltage, brightness, current efficiency, and LT95 of the organic electroluminescent devices provided above. Among them, the voltage and current efficiency are the corresponding values at a brightness of 1000 cd / m 2 The corresponding value, and LT95 refers to the time required for the device efficiency to drop to 95% of the efficiency corresponding to the initial current density while keeping the initial current density of the device at 10 mA / cm 2 unchanged. The driving voltage, current efficiency, and LT95 are relative values (based on Compound D1). The specific test results are shown in Table 1 below:

[0137] Table 1

[0138]

[0139]

[0140] As can be seen from the above, in the present invention, by designing the structure of the triazine compound, the triazine compound obtained after introducing the carbazole group has significantly improved charge mobility. Therefore, this triazine compound has good light-emitting performance and can be used to prepare organic electroluminescent devices. Especially as the light-emitting layer material in organic electroluminescent devices, it can effectively reduce the driving voltage of organic electroluminescent devices and improve the current efficiency and lifespan of organic electroluminescent devices.

[0141] In summary, in the present invention, by designing the structure of the triazine compound and using the triazine compound with a specific structure as the host material of the light-emitting layer in organic electroluminescent devices, the driving voltage of organic electroluminescent devices can be effectively reduced, and the current efficiency and lifespan of organic electroluminescent devices can be improved.

[0142] The present invention illustrates the detailed process flow of the present invention through the above embodiments. However, the present invention is not limited to the above detailed process flow, that is, it does not mean that the present invention must rely on the above detailed process flow to be implemented. Those skilled in the art should understand that any improvement to the present invention, the equivalent substitution of each raw material of the product of the present invention, the addition of auxiliary components, the selection of specific methods, etc. all fall within the protection scope and the disclosure scope of the present invention.

Claims

1. A triazine compound, characterized in that, The triazine compound has the structure shown in the following formula I: Among them, R1, R2, R3, R4, R5, R6, R7, R8, R9, R 10 , R 11 , R 12 , R 13 are each independently selected from any one of a hydrogen atom, a deuterium atom, a substituted or unsubstituted C1-C12 alkyl group, a substituted or unsubstituted C1-C12 alkoxy group, a substituted or unsubstituted C6-C30 aryl group, and a substituted or unsubstituted C3-C30 heteroaryl group; Ar1 is selected from any one of a substituted or unsubstituted C6-C30 aryl group and a substituted or unsubstituted C3-C30 heteroaryl group; R1, R2, R3, R4, R5, R6, R7, R8, R9, R 10 , R 11 , R 12 , R 13 The substituents in Ar1 are each independently selected from any one of a deuterium atom, -F, -CN, an alkyl group having 1 to 5 carbon atoms, an alkoxy group having 1 to 5 carbon atoms, or an aryl group having 6 to 12 carbon atoms; n is an integer between 1 and 4; The hydrogen atoms in the compound of formula I can each independently be substituted by at least one of a deuterium atom, -F, -CN, a C1-C12 alkyl group, a C1-C12 alkoxy group, a C6-C30 aryl group or a C3-C30 heteroaryl group.

2. The triazine compound according to claim 1, wherein The C1-C12 alkyl group is selected from any one of methyl, ethyl, tert-butyl, cyclopentyl, cyclohexyl, octyl or adamantyl; Preferably, the C1-C12 alkoxy group is selected from any one of methoxy, ethoxy, propoxy, butoxy, pentyloxy, hexyloxy or octyloxy; Preferably, the C6-C30 aryl group is selected from any one of phenyl, biphenyl, naphthyl, terphenyl, anthracenyl, phenanthryl, fluorenyl, benzofluorenyl, dibenzofluorenyl, naphthofluorenyl, pyrenyl, perylenyl, spirofluorene, triphenylene, fluoranthenyl, hydrobenzanthracenyl, indeno[1,2-b]fluorene, benzo[ghi]fluorene, dibenzo[ghi]fluorene, naphtho[2,1-a]fluorene or benzo[n]naphtho[2,1-a]fluorene; Preferably, the C3-C30 heteroaryl group is selected from any one of a triazinyl group, a pyridyl group, a pyrimidinyl group, a dibenzofuranyl group, a dibenzothiophenyl group, a naphthobenzo[1,2-b]furanyl group, a naphthobenzo[1,2-b]thiophenyl group, a dinaphtho[2,1-b:1',2'-d]furanyl group, a dinaphtho[2,1-b:1',2'-d]thiophenyl group, a carbazolyl group, a phenylcarbazolyl group or a carbazolylphenyl group, preferably any one of a dibenzofuranyl group, a dibenzothiophenyl group or a carbazolyl group; Preferably, the C1-C5 alkyl group is selected from any one of methyl, ethyl, propyl or tert-butyl; Preferably, the C1-C5 alkoxy group is selected from any one of methoxy, ethoxy, propoxy or butoxy; Preferably, the C6-C12 aryl group is selected from any one of phenyl, naphthyl or biphenyl.

3. The triazine compound according to claim 1 or 2, characterized in that, The R1, R2, R3, R4, R5, R6, R7, R8, R9, R 10 , R 11 , R 12 , R 13 are each independently selected from any one of a hydrogen atom, a deuterium atom, a methyl group, an ethyl group, a tert-butyl group, a methoxy group, an ethoxy group, a phenyl group, a naphthyl group, a biphenyl group, a pyridyl group, a dibenzofuranyl group, a dibenzothiophenyl group or a carbazolyl group, and are preferably a hydrogen atom or a deuterium atom.

4. The triazine compound according to any one of claims 1-3, characterized in that, Ar1 is selected from any one of the following substituted or unsubstituted groups: Any one of phenyl, naphthyl, biphenyl or fluorenyl; The substituents of the substitution are selected from any one of a deuterium atom, -F, -CN, methyl, ethyl, tert-butyl, methoxy, ethoxy or phenyl; Preferably, the substituents of the substitution are selected from any one of a deuterium atom, -F, -CN, methyl or phenyl.

5. The triazine compound according to any one of claims 1-4, characterized in that, n is selected from 1 or 2, preferably 1.

6. The triazine compound according to any one of claims 1-5, characterized in that, The hydrogen atoms in the compound of formula I can each independently be substituted by at least one of a deuterium atom, -F, -CN, methyl, ethyl, tert-butyl, methoxy, ethoxy or propoxy.

7. The triazine compound according to any one of claims 1-6, characterized in that, The triazine compound has the structure shown in the following formula I-1: Ar1 and n have the same definitions as in claim 1.

8. The triazine compound according to any one of claims 1-7, characterized in that, The triazine compound includes any one of the following compounds 1-60:

9. An organic electroluminescent device, characterized in that, The organic electroluminescent device includes the triazine compound according to any one of claims 1-8.

10. The organic electroluminescent device according to claim 9, characterized in that, The organic electroluminescent device includes a first electrode, a second electrode and an organic layer disposed between the first electrode and the second electrode; The material of the organic layer includes the triazine compound according to any one of claims 1-8; Preferably, the organic layer includes a light-emitting layer; The material of the light-emitting layer includes a triazine compound as described in any one of claims 1-8.

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