An organic compound, an organic electroluminescence device, and a display device

Abstract

This invention provides an organic compound, an organic electroluminescent device, and a display device. The organic compound has the structure shown in Formula I. In this invention, by designing the compound structure, the obtained compound is used as the light-emitting layer material of the OLED light-emitting device, so that the OLED light-emitting device has a lower driving voltage, higher current efficiency, and longer lifespan.

Description

Technical Field

[0001] This invention belongs to the field of organic electroluminescent materials technology, specifically relating to an organic compound, an organic electroluminescent device, and a display device. Background Technology

[0002] Currently, organic light-emitting diode (OLED) display technology has been applied in fields such as smartphones and tablets, and will further expand to large-size applications such as televisions. Over the past 30 years of development, various high-performance OLED materials have been developed, and through different designs of device structures and optimization of device lifespan, efficiency, and other performance characteristics, the commercialization of OLEDs has been accelerated, leading to their widespread application in the display and lighting fields.

[0003] The selection of hole layer, light-emitting layer and other organic functional layer materials also has a significant impact on the current efficiency, driving voltage and lifetime of the device. Currently, we are still exploring functional layer materials with higher performance.

[0004] Therefore, in order to meet people's higher requirements for OLED devices, there is an urgent need in this field to develop more types and higher performance OLED materials. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the present invention aims to provide an organic compound, an organic electroluminescent device, and a display device. Through the design of the compound structure, the present invention yields a compound that serves as the light-emitting layer material for an OLED light-emitting device, resulting in an OLED light-emitting device with lower driving voltage, higher current efficiency, and longer lifespan.

[0006] To achieve this objective, the present invention adopts the following technical solution:

[0007] On one hand, the present invention provides an organic compound having the structure shown in Formula I:

[0008]

[0009] Among them, X1, X2, X3, and X4 are each independently selected from O, S, and CR. 81 R 82 or NR 83 ;

[0010] R 81 R 82 Each is independently selected from C1-C10 alkyl, C1-C10 cycloalkyl, or C6-C15 aryl, R 81 and R 82 They can exist independently or be linked together in a ring via single bonds;

[0011] R 83 Selected from C1-C10 alkyl, C1-C10 cycloalkyl, or C6-C15 aryl;

[0012] R 61 ~R 76 Each is independently selected from -H, -D, -F, -CN, C1-C10 alkyl, C1-C10 cycloalkyl, C1-C10 alkoxy, C6-C15 aryl, C6-C15 aryloxy, -NR 85 R 86 Any one of them;

[0013] R 85 R 86 Each is independently selected from C1-C10 alkyl, C1-C10 cycloalkyl, or C6-C15 aryl, R 85 and R 86 They can exist independently or be linked together in a ring via single bonds;

[0014] The R 61 ~R 76 When R is a C6-C15 aryl or C6-C15 aryloxy group, 61 ~R 76 Each benzene ring that can be independently attached to it passes through -O-, -S-, Bridge, the short line indicates the connection point;

[0015] R 87 R 88 and R 89 Each is independently selected from C1-C10 alkyl, C1-C10 cycloalkyl, or C6-C15 aryl;

[0016] In the compound of formula I, each hydrogen atom can be independently replaced by a deuterium atom, a fluorine atom, a C1-C10 alkyl group, a C1-C10 cycloalkyl group, or a C1-C10 alkoxy group;

[0017] And at least one hydrogen atom in general formula I is Replacement, "*" indicates a connection site;

[0018] In this invention, the compound obtained by designing the compound structure is used as the light-emitting layer material of the OLED light-emitting device, so that the OLED light-emitting device has a lower driving voltage, higher current efficiency and longer lifespan.

[0019] In this invention, C1-C10 can be C1, C2, C3, C4, C5, C6, C7, C8, C9 or C10; C6-C15 can be C6, C8, C10, C12 or C15, etc.

[0020] The structure of the compound of formula I to be protected by this invention is illustrated by example:

[0021] When in compound I, R 62 For -NR 85 R 86 And R 85 R 86 When both are selected from ethyl groups, the compound of formula I has the following structure:

[0022]

[0023] When R 85 R 86 Compound I, linked by single bonds to form a ring, has the following structure:

[0024]

[0025] When in compound I, R 62 Selected from -NR 85 R 86 And R 85 R 86 When both are selected from phenyl groups, the compound of formula I has the following structure:

[0026]

[0027] When R 85 R 86 Compound I, linked by single bonds to form a ring, has the following structure:

[0028]

[0029] When R in compound I 61 ~R 76 When alkyl groups are selected from C1-C10, two adjacent R 61 ~R 76 They can be directly connected, for example, when R 61 R 62 When both are selected from ethyl groups, the compound of formula I has the following structure:

[0030]

[0031] When R 61 R 62 When directly connected, the compound of formula I has the following structure:

[0032]

[0033] When R in compound I 61 ~R 76 When selected from C6-C15 arylalkyl groups, R61 ~R 76 Each can independently pass through -O-, -S-, ... bridging;

[0034] When R 61 R 62 When both are selected from phenyl groups, the compound of formula I has the following structure:

[0035]

[0036] When R 61 Selected from phenyl, R 62 Selected from H, the compound of formula I has the following structure:

[0037]

[0038] When R 61 and R 61 The substituted benzene ring passes through O, S, Bridging, the compound of formula I has the following structure:

[0039]

[0040] The following are preferred technical solutions of the present invention, but are not intended to limit the technical solutions provided by the present invention. The purpose and beneficial effects of the present invention can be better achieved and realized through the following preferred technical solutions.

[0041] As a preferred embodiment of the present invention, the alkyl group of C1-C10 is selected from any one of methyl, ethyl, propyl, butyl, pentyl, hexyl or adamantyl.

[0042] Preferably, the alkyl group of C1-C10 is selected from any one of methyl, ethyl, isopropyl, tert-butyl, or adamantyl.

[0043] As a preferred embodiment of the present invention, the aryl group of C6-C15 is selected from any one of phenyl, naphthyl, biphenyl, 9,9-dimethylfluorenyl, phenanthryl or anthracene.

[0044] As a preferred embodiment of the present invention, the alkoxy group of C1-C10 is selected from any one of methoxy, ethoxy, propoxy, butoxy, pentoxy, hexoxy, or adamantoxy.

[0045] As a preferred embodiment of the present invention, the compound of formula I is selected from any one of the following substituted or unsubstituted compounds:

[0046]

[0047]

[0048] The substitution refers to the independent replacement of each hydrogen atom in the above compound by a deuterium atom (-D).

[0049] It should be noted that there are no special restrictions on the preparation method of the compound of formula I in this invention, and it can be prepared by conventional methods in the art.

[0050] In a second aspect, the present invention provides an organic electroluminescent device, the organic electroluminescent device comprising an anode, a cathode, and an organic thin film layer disposed between the anode and the cathode; the material of the organic thin film layer comprises the organic compounds described in the first aspect.

[0051] As a preferred embodiment of the present invention, the organic thin film layer includes a light-emitting layer; the doping material of the light-emitting layer includes the organic compounds described in the first aspect.

[0052] As a preferred embodiment of the present invention, the organic electroluminescent device includes a blue organic electroluminescent device and a green organic electroluminescent device.

[0053] Thirdly, the present invention provides a display device, characterized in that the display device includes an organic electroluminescent device as described in the second aspect.

[0054] Compared with the prior art, the present invention has the following beneficial effects:

[0055] The OLED light-emitting devices prepared by using the compounds provided in this invention as the light-emitting layer material of OLED light-emitting devices have lower driving voltage, higher current efficiency, and longer lifespan. Detailed Implementation

[0056] The technical solution of the present invention will be further illustrated below through specific embodiments. Those skilled in the art should understand that the embodiments described are merely illustrative of the present invention and should not be construed as limiting the invention in any way.

[0057] Synthesis Example 1

[0058] This synthetic example provides compound 1 and its synthetic method, which is as follows:

[0059]

[0060] (1) Synthesis of intermediate 1-1

[0061] Under nitrogen protection, 40 mL of dry toluene, 0.01 mol of 1,3-dichloro-5-(1-methylcyclohexyl)benzene, 0.01 mol of diphenylamine, 0.0001 mol of Pd(dba)2 (bis(dibenzylacetone)palladium), 0.4 g of a 10% (w / w) solution of tri-tert-butylphosphine in toluene (0.0002 mol of tri-tert-butylphosphine) and 0.03 mol of sodium tert-butoxide were added to a 100 mL three-necked flask. The mixture was heated to reflux for 12 h, then cooled to room temperature, and water was added to separate the contents. The organic layer was then washed with water until neutral, dried with magnesium sulfate, filtered to remove magnesium sulfate, concentrated to dryness, and separated by column chromatography to obtain intermediate 1-1.

[0062] Mass spectrometry analysis of intermediate 1-1 showed a mass-to-charge ratio (m / z) of 375.2.

[0063] (2) Synthesis of intermediates 1-2

[0064] Following the synthesis method of intermediate 1-1 described above, 1,3-dichloro-5-(1-methylcyclohexyl)benzene was replaced with an equal amount of intermediate 1-1, and diphenylamine was replaced with an equal amount of p-triphenyldiamine, with other conditions remaining unchanged, to obtain intermediate 1-2.

[0065] Mass spectrometry analysis of intermediates 1-2 revealed a mass-to-charge ratio (m / z) of 938.5.

[0066] (3) Synthesis of Compound 1

[0067] Under nitrogen protection and oil bath heating, 200 mL of dry o-dichlorobenzene, 0.01 mol of intermediate 1-2, and 0.00 6 mol of anhydrous nickel chloride were added to a 500 mL three-necked flask. The mixture was stirred until homogeneous, and the temperature was maintained at 20℃-25℃. 40 mL of a 1.0 M solution of BBr3 in dichloromethane (containing 0.04 mol of BBr3) was slowly added dropwise. After the addition was complete, the temperature was slowly raised to the oil bath temperature of 40℃ and reacted for 2 h. Then, the temperature was slowly raised to the oil bath temperature of 100℃, during which the dichloromethane in the reaction system was distilled off. The reaction was then maintained at the oil bath temperature of 100℃ for 4 h, and then raised to the oil bath temperature of 140℃ and reacted for 12 h. The temperature was then lowered to room temperature, and 0.1 mol of N-ethyldiisopropylamine was slowly added to terminate the reaction. Water was added to dissolve the organic layer, which was washed with water until neutral. The solution was dried with magnesium sulfate, filtered to remove magnesium sulfate, concentrated to dryness, and separated by silica gel column chromatography. The solution was eluted with petroleum ether:ethyl acetate = 20:1 (v / v) to obtain compound 1.

[0068] Mass spectrometry analysis of compound 1 showed a mass-to-charge ratio (m / z) of 954.5.

[0069] Synthesis Example 2

[0070] This synthetic example provides compound 2 and its synthetic method, which is as follows:

[0071]

[0072] (1) Synthesis of intermediate 2-1

[0073] Under nitrogen protection, 200 mL of dry toluene, 0.05 mol of 4-(1-methylcyclohexyl)bromobenzene, 0.01 mol of N,N'-bis(3-anilinophenyl)-1,3-phenylenediamine, 0.0001 mol of Pd(dba)2 (bis(dibenzylacetone palladium), 0.4 g of a 10% (w / w) tri-tert-butylphosphine toluene solution (0.0002 mol of tri-tert-butylphosphine), and 0.03 mol of sodium tert-butoxide were added to a 500 mL three-necked flask. The mixture was heated to reflux for 12 h, then cooled to room temperature, and water was added to separate the contents. The organic layer was then washed with water until neutral, dried with magnesium sulfate, filtered to remove magnesium sulfate, concentrated to dryness, and separated by column chromatography to obtain intermediate 2-1.

[0074] Mass spectrometry analysis of intermediate 2-1 showed a mass-to-charge ratio (m / z) of 1130.7.

[0075] (2) Synthesis of compound 2

[0076] Under nitrogen protection and oil bath heating, 200 mL of dry o-dichlorobenzene, 0.01 mol of intermediate 2-1, and 0.00 6 mol of anhydrous nickel chloride were added to a 500 mL three-necked flask. The mixture was stirred until homogeneous, and the temperature was maintained at 20℃-25℃. 40 mL of a 1.0 M solution of BBr3 in dichloromethane (containing 0.04 mol of BBr3) was slowly added dropwise. After the addition was complete, the temperature was slowly raised to the oil bath temperature of 40℃ and reacted for 2 h. Then, the temperature was slowly raised to the oil bath temperature of 100℃, during which the dichloromethane in the reaction system was distilled off. The reaction was then maintained at the oil bath temperature of 100℃ for 4 h, and then raised to the oil bath temperature of 140℃ and reacted for 12 h. The temperature was then lowered to room temperature, and 0.1 mol of N-ethyldiisopropylamine was slowly added to terminate the reaction. Water was added to dissolve the organic layer, which was washed with water until neutral. The solution was dried with magnesium sulfate, filtered to remove magnesium sulfate, concentrated to dryness, and separated by silica gel column chromatography. The solution was eluted with petroleum ether:ethyl acetate = 10:1 (volume ratio) to obtain compound 2.

[0077] Mass spectrometry analysis of compound 2 showed a mass-to-charge ratio (m / z) of 1146.7.

[0078] Synthesis Example 3

[0079] This synthetic example provides compound 4 and its synthetic method, which is as follows:

[0080]

[0081] (1) Synthesis of intermediate 4-1

[0082] Under nitrogen protection, 200 mL of dry toluene, 0.01 mol N,N-diphenyl-N,N-di(m-bromophenyl)m-phenylenediamine, 0.03 mol aniline, 0.0001 mol Pd(dba)2 (bis(dibenzylacetone palladium), 0.4 g of a 10% (w / w) tri-tert-butylphosphine toluene solution (0.0002 mol of tri-tert-butylphosphine), and 0.03 mol sodium tert-butoxide were added to a 500 mL three-necked flask. The mixture was heated to reflux for 12 h, then cooled to room temperature, water was added to dissolve the organic layer, and the organic layer was washed with water until neutral. The solution was dried with magnesium sulfate, filtered to remove magnesium sulfate, concentrated to dryness, and then recrystallized from toluene after column chromatography to obtain intermediate 4-1.

[0083] Mass spectrometry analysis of intermediate 4-1 showed a mass-to-charge ratio (m / z) of 594.3.

[0084] (2) Synthesis of intermediate 4-2

[0085] Under nitrogen protection, 200 mL of dry toluene, 0.03 mol of 4-(1-methylcyclohexyl)bromobenzene, 0.01 mol of intermediate 4-1, 0.0001 mol of Pd(dba)2 (bis(dibenzylacetone)palladium), 0.4 g of a 10% (w / w) solution of tri-tert-butylphosphine in toluene (0.0002 mol of tri-tert-butylphosphine), and 0.03 mol of sodium tert-butoxide were added to a 500 mL three-necked flask. The mixture was heated to reflux for 12 h, then cooled to room temperature, and water was added to separate the layers. The organic layer was then washed with water until neutral, dried with magnesium sulfate, filtered to remove the magnesium sulfate, concentrated to dryness, and subjected to column chromatography. The resulting product was recrystallized from toluene and tetrahydrofuran (volume ratio 4:1) to obtain intermediate 4-2.

[0086] Mass spectrometry analysis of intermediate 4-2 revealed a mass-to-charge ratio (m / z) of 938.5.

[0087] (3) Synthesis of compound 4

[0088] Under nitrogen protection and oil bath heating, 200 mL of dry o-dichlorobenzene, 0.01 mol of intermediate 2-1, and 0.00 6 mol of anhydrous nickel chloride were added to a 500 mL three-necked flask. The mixture was stirred until homogeneous, and the temperature was maintained at 20℃-25℃. 40 mL of a 1.0 M solution of BBr3 in dichloromethane (containing 0.04 mol of BBr3) was slowly added dropwise. After the addition was complete, the temperature was slowly increased to the oil bath temperature of 40℃ and reacted for 2 hours. Then, the temperature was slowly increased to the oil bath temperature of 100℃, during which the dichloromethane in the reaction system was distilled off. The reaction was then maintained at the oil bath temperature of 100℃ for 4 hours, and then increased to the oil bath temperature of 140℃ for 12 hours. Finally, the temperature was lowered to room temperature, and 0.1 mol of... The reaction was terminated with N-ethyldiisopropylamine; water was added to dissolve the organic layer, which was washed with water until neutral, dried with magnesium sulfate, filtered to remove magnesium sulfate, concentrated to dryness, and separated by silica gel column chromatography with petroleum ether:dichloromethane = 10:1 (volume ratio) to give compound 4.

[0089] Mass spectrometry analysis of compound 4 showed a mass-to-charge ratio (m / z) of 954.5.

[0090] Synthesis Example 4

[0091] This synthetic example provides compound 21 and its synthetic method, which is as follows:

[0092]

[0093] Referring to Synthesis Example 1, by replacing 1,3-dichloro-5-(1-methylcyclohexyl)benzene with an equimolar amount of 1,3-dichloro-5-(1-methylcyclopentyl)benzene, while keeping other conditions unchanged, compound 21 can be obtained.

[0094] Mass spectrometry analysis of compound 21 showed a mass-to-charge ratio (m / z) of 926.5.

[0095] Synthesis Example 5

[0096] This synthetic example provides compound 22 and its synthetic method, which is as follows:

[0097]

[0098] Referring to Synthesis Example 2, by replacing 4-(1-methylcyclohexyl)benzene with an equimolar amount of 4-(1-methylcyclopentyl) while keeping other conditions unchanged, compound 22 can be obtained.

[0099] Mass spectrometry analysis of compound 22 revealed a mass-to-charge ratio (m / z) of 1090.6.

[0100] Synthesis Example 6

[0101] This synthetic example provides compound 24 and its synthetic method, which is as follows:

[0102]

[0103] Referring to Synthesis Example 3, by replacing 4-(1-methylcyclohexyl)benzene with an equimolar amount of 4-(1-methylcyclopentyl) while keeping other conditions unchanged, compound 24 can be obtained.

[0104] Mass spectrometry analysis of compound 24 revealed a mass-to-charge ratio (m / z) of 926.5.

[0105] Based on the above synthesis examples and in conjunction with commonly used synthesis methods in the art, the relevant compounds in Table 1 below can be synthesized quite intuitively:

[0106] Table 1

[0107]

[0108]

[0109] The specific structures of the compounds used in the following device embodiments and device comparison examples are as follows. The compounds designed in this invention are used as doping materials for the light-emitting layer in organic electroluminescent devices:

[0110]

[0111] Device Example 1

[0112] This embodiment of the device provides an organic electroluminescent device and its fabrication method.

[0113] The structure of the organic electroluminescent device is: ITO / HIL (100nm) / HT (40nm) / BH (30nm): doped material 1.5% / TPBI (30nm) / LiF (0.5nm) / Al (150nm).

[0114] The fabrication process of organic electroluminescent devices is as follows:

[0115] The glass substrate coated with an ITO transparent conductive layer (as the anode) was ultrasonically treated in a cleaning agent, then rinsed in deionized water, then ultrasonically degreased in a mixed solvent of acetone and ethanol, then baked in a clean environment until completely dehydrated, cleaned with ultraviolet light and ozone, and bombarded with a low-energy cation beam to improve the surface properties and enhance the bonding ability with the hole injection layer.

[0116] The glass substrate was placed in a vacuum chamber and evacuated to a vacuum level of 5 × 10⁻⁶. -6 ~1×10 -5Pa, HIL is vacuum-deposited on the anode as a hole injection layer at a deposition rate of 0.1 nm / s and a film thickness of 100 nm;

[0117] HT was vacuum-deposited as a hole transport layer on the hole injection layer at a deposition rate of 0.1 nm / s and a film thickness of 40 nm.

[0118] A light-emitting layer is vacuum-deposited on top of the hole transport layer at a deposition rate of 0.1 nm / s and a total film thickness of 30 nm. The main material of the light-emitting layer is BH, and the doping material is the composition provided by this invention. 1.5% refers to the doping ratio of the doping material, that is, the volume ratio of the main material of the light-emitting layer to the doping material is 98.5:1.5.

[0119] TPBI was vacuum-deposited on top of the organic light-emitting layer as the electron transport layer of the organic electroluminescent device; the deposition rate was 0.1 nm / s and the total film thickness was 30 nm.

[0120] 0.5 nm LiF and 150 nm Al were vacuum-deposited on the electron transport layer as the electron injection layer and cathode, respectively.

[0121] Device Examples 2-13

[0122] Device Examples 2-13 each provide an organic electroluminescent device. The only difference between them and Device Example 1 is that the doping material of the light-emitting layer is different. The specific composition is detailed in Table 2 below. Other preparation steps and conditions are the same as those in Device Example 1.

[0123] Device Comparison Example 1-2

[0124] Comparative Examples 1 and 2 each provide an organic electroluminescent device. The only difference between them and Device Example 1 is that the doping material of the light-emitting layer is different. The specific composition is detailed in Table 2 below. Other preparation steps and conditions are the same as those in Device Example 1.

[0125] Performance testing:

[0126] The brightness, driving voltage, current efficiency, and lifetime test LT95 of the fabricated organic electroluminescent device were measured. The lifetime test LT95 refers to maintaining a constant current density (1000 cd / m²) at room temperature (25–27 °C) while retaining the initial brightness. 2 The time required for the brightness to decrease to 95% of the initial brightness is measured. In the table below, voltage, efficiency, and LT95 lifetime are all relative values ​​(compared to device comparison example 1). See Table 2 below for detailed test results.

[0127] Table 2

[0128]

[0129]

[0130] As shown in Table 2, the organic electroluminescent devices prepared by using the compounds provided in this invention as doping materials for the light-emitting layer of OLED light-emitting devices have lower driving voltage, higher current efficiency, and longer lifetime.

[0131] The applicant declares that the organic compounds, organic electroluminescent devices, and display devices of the present invention are illustrated through the above embodiments, but the present invention is not limited to the above embodiments, that is, it does not mean that the present invention must rely on the above embodiments to be implemented. Those skilled in the art should understand that any improvements to the present invention, equivalent substitutions of the raw materials of the products of the present invention, addition of auxiliary components, selection of specific methods, etc., all fall within the protection scope and disclosure scope of the present invention.

Claims

1. An organic compound, characterized in that, The organic compound has the structure shown in Formula I: Among them, X1, X2, X3, and X4 are each independently selected from O, S, and CR. 81 R 82 or NR 83 ; R 81 R 82 Each is independently selected from C1-C10 alkyl, C1-C10 cycloalkyl, or C6-C15 aryl, R 81 and R 82 They can exist independently or be linked together in a ring via single bonds; R 83 Selected from C1-C10 alkyl, C1-C10 cycloalkyl, or C6-C15 aryl; R 61 ~R 76 Each is independently selected from -H, -D, -F, -CN, C1-C10 alkyl, C1-C10 cycloalkyl, C1-C10 alkoxy, C6-C15 aryl, C6-C15 aryloxy, -NR 85 R 86 Any one of them; R 85 R 86 Each is independently selected from C1-C10 alkyl, C1-C10 cycloalkyl, or C6-C15 aryl, R 85 and R 86 They can exist independently or be linked together in a ring via single bonds; The R 61 ~R 76 When R is a C6-C15 aryl or C6-C15 aryloxy group, 61 ~R 76 Each benzene ring that can be independently attached to it passes through -O-, -S-, Bridge, the short line indicates the connection point; R 87 R 88 and R 89 Each is independently selected from C1-C10 alkyl, C1-C10 cycloalkyl, or C6-C15 aryl; In the compound of formula I, each hydrogen atom can be independently replaced by a deuterium atom, a fluorine atom, a C1-C10 alkyl group, a C1-C10 cycloalkyl group, or a C1-C10 alkoxy group; And at least one hydrogen atom in general formula I is Replacement, "*" indicates a connection site.

2. The organic compound according to claim 1, characterized in that, The C1-C10 alkyl group is selected from any one of methyl, ethyl, propyl, butyl, pentyl, hexyl or adamantyl; Preferably, the alkyl group of C1-C10 is selected from any one of methyl, ethyl, isopropyl, tert-butyl, or adamantyl.

3. The organic compound according to claim 1 or 2, characterized in that, The aryl group of C6-C15 is selected from any one of phenyl, naphthyl, biphenyl, 9,9-dimethylfluorenyl, phenanthryl or anthracene.

4. The organic compound according to any one of claims 1-3, characterized in that, The alkoxy group of C1-C10 is selected from any one of methoxy, ethoxy, propoxy, butoxy, pentoxy, hexoxy, or adamantoxy.

5. The organic compound according to any one of claims 1-4, characterized in that, The compound of formula I is selected from any one of the following substituted or unsubstituted compounds: The substitution refers to the independent replacement of each hydrogen atom in the above compound by a deuterium atom.

6. An organic electroluminescent device, characterized in that, The organic electroluminescent device includes an anode, a cathode, and an organic thin film layer disposed between the anode and the cathode; the material of the organic thin film layer includes the organic compound as described in any one of claims 1-5.

7. The organic electroluminescent device according to claim 6, characterized in that, The organic thin film layer includes a light-emitting layer; the doping material of the light-emitting layer includes the organic compound as described in any one of claims 1-5.

8. The organic electroluminescent device according to claim 6 or 7, characterized in that, The organic light-emitting devices include blue organic light-emitting devices and green organic light-emitting devices.

9. A display device, characterized in that, The display device includes an organic electroluminescent device as described in any one of claims 6-8.

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