CN109232495A - A kind of the triaromatic amine compound and luminescent device of thiophene containing indeno and furans - Google Patents

A kind of the triaromatic amine compound and luminescent device of thiophene containing indeno and furans Download PDF

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CN109232495A
CN109232495A CN201811437590.9A CN201811437590A CN109232495A CN 109232495 A CN109232495 A CN 109232495A CN 201811437590 A CN201811437590 A CN 201811437590A CN 109232495 A CN109232495 A CN 109232495A
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furans
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amine compound
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黄锦海
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Shanghai Taoe Chemical Technology Co Ltd
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Abstract

The present invention provides the triaromatic amine compounds of a kind of thiophene containing indeno and furans, have the following structure formula:The compound has preferable thermal stability, high-luminous-efficiency, high luminance purity, can be applied to organic electroluminescence device, organic solar batteries, Organic Thin Film Transistors or organophotoreceptorswith field.The present invention also provides a kind of organic electroluminescence devices, the device includes anode, cathode and organic layer, organic layer includes at least one layer in luminescent layer, hole injection layer, hole transmission layer, hole blocking layer, exciton barrier-layer, electron transfer layer, the at least one layer compound containing such as structural formula I in organic layer has the advantages that electroluminescent efficiency is good and excitation purity is excellent and the service life is long using the organic electroluminescence device that the compound makes.

Description

A kind of the triaromatic amine compound and luminescent device of thiophene containing indeno and furans
Technical field
The present invention relates to field of organic electroluminescent materials, and in particular to a kind of triaromatic amine of thiophene containing indeno and furans Compound further relates to a kind of organic electroluminescence device.
Background technique
Organic electroluminescence device (OLEDs) is between two metal electrodes by spin coating or vacuum evaporation deposition one The device that layer organic material is prepared, a classical three layer organic electroluminescence device include hole transmission layer, luminescent layer And electron transfer layer.The electronics generated by cathode is followed to be incorporated in through electron transfer layer through hole transmission layer in the hole generated by anode Luminescent layer forms exciton, then shines.Organic electroluminescence device can according to need the material by changing luminescent layer to adjust Section emits the light of various needs.
Organic electroluminescence device has self-luminous, wide viewing angle, low energy consumption, efficiency as a kind of novel display technology High, thin, rich in color, fast response time, Applicable temperature range be wide, low driving voltage, can make flexible and transparent Display panel and the particular advantages such as environmental-friendly can be applied on flat-panel monitor and a new generation's illumination, be can also be used as The backlight of LCD.
Since the invention at the bottom of the 1980s, organic electroluminescence device is industrially applied, such as As screens such as camera and mobile phones, but current OLED device, due to low efficiency, it is wider that the factors such as service life is short restrict it General application, especially large screen display.And restricting one of key factor is exactly in organic electroluminescence device The performance of electroluminescent organic material.Additionally, due to OLED device when applying voltage-operated, Joule heat can be generated, so that Organic material is easy to happen crystallization, affects service life and the efficiency of device, therefore, it is also desirable to develop the organic electroluminescence of stability and high efficiency Luminescent material.
In organic electroluminescence device, the introducing of hole mobile material and injection material can be effectively reduced positive electricity Lotus is transferred to the ability of luminescent layer from anode, improves the efficiency and thermostabilization of device.Traditional hole-injecting material, such as copper Phthalocyanine (CuPc), degradation is slow, and preparation energy consumption is high, is unfavorable for environmental protection, and it can absorb light, influence device Efficiency.NPB etc. original hole mobile material, thermal stability is poor, also largely influences device lifetime.Thus, it needs Develop the electroluminescent organic material of efficient stable.
Summary of the invention
The present invention provides the triaromatic amine compounds of a kind of thiophene containing indeno and furans, to have the following structure Formulas I Compound:
Wherein, R1-R6Independently selected from hydrogen, deuterium, halogen, cyano, the alkyl of C1-C12, substitution or unsubstituted C6- The heteroaryl of the aryl of C30, substitution or unsubstituted C3-C30；
X is selected from O, S, N；
L is selected from singly-bound, the alkyl of C1-C12, substitution or aryl, the substitution or unsubstituted of unsubstituted C6-C30 The heteroaryl of C3-C30；
Ar1-Ar2Independently selected from hydrogen, the aryl of substitution or unsubstituted C6-C30, substitution or unsubstituted C3- The heteroaryl of C30；Ar1With Ar2Between it is not cyclic, either formed replace or unsubstituted C1-C12 five yuan or hexatomic ring.
Preferably, R1-R2、Ar1-Ar2Independently selected from phenyl, diphenyl phenyl, naphthalene, naphthylphenyl, xenyl, three Xenyl, three and phenyl, anthryl, phenanthryl, pyrenyl, base, fluoranthene base, acenaphthenyl, acenaphthylene base, fluorenyl, carbazyl, dibenzothiophenes Base and dibenzofuran group, or the above group further replace gained group by the alkyl of C1-C12.
Preferably, R3-R6Independently selected from methyl, phenyl, tert-butyl, ethyl, propyl, isopropyl.
Preferably, the substituent group of described five yuan or hexatomic ring is selected from methyl, phenyl, tert-butyl, ethyl, propyl, isopropyl.
Preferably, the triaromatic amine compound of the thiophene containing indeno and furans is the chemical combination of following structural 1-134 Object:
The triaromatic amine compound of thiophene containing indeno and furans of the invention can be reacted by Buchwald-Hartwig With Liv Ullmann is anti-, suzkui should be prepared.
The triaromatic amine compound of thiophene containing indeno and furans of the invention can be reacted by Buchwald-Hartwig With Liv Ullmann is anti-, suzkui should be prepared.
The triaromatic amine compound of thiophene containing indeno and furans of the invention can be applied to organic electroluminescence device, too Positive energy battery, Organic Thin Film Transistors or organophotoreceptorswith field.
The present invention also provides a kind of organic electroluminescence device, which includes anode, cathode and organic layer, organic layer Include at least one in luminescent layer, hole injection layer, hole transmission layer, hole blocking layer, exciton barrier-layer, electron transfer layer Layer, at least one layer of triaromatic amine compound containing thiophene containing indeno and furans as described in structural formula I in the organic layer.
Wherein organic layer is luminescent layer；
Or organic layer is luminescent layer and electron transfer layer；
Or organic layer is luminescent layer, electron transfer layer and electron injecting layer；
Or organic layer is hole transmission layer and luminescent layer；
Or organic layer is hole injection layer, hole transmission layer and luminescent layer；
Or organic layer is hole transmission layer, luminescent layer and electron transfer layer；
Or organic layer is hole injection layer, hole transmission layer, luminescent layer and electron transfer layer；
Or organic layer is hole injection layer, hole transmission layer, luminescent layer, electron transfer layer and electron injecting layer；
Or organic layer is hole injection layer, hole transmission layer, barrier layer, luminescent layer, electron transfer layer and electron injection Layer；
Or organic layer is hole transmission layer, luminescent layer, electron transfer layer, electron injecting layer and hole blocking layer；
Or organic layer is hole transmission layer, luminescent layer, electron injecting layer and hole blocking layer.
Preferably, the layer where the triaromatic amine compound of the thiophene containing indeno and furans is hole transmission layer.
The triaromatic amine compound of thiophene containing indeno and furans as described in structural formula I is used alone, or with other chemical combination Object is used in mixed way；The triaromatic amine compound of thiophene containing indeno and furans as described in structural formula I can be used alone therein A kind of compound, can also be simultaneously using two or more the compound in structural formula I；It is used alone a kind of selected from knot The thiophene containing indeno of structure formula 1-134 and the triaromatic amine compound of furans, or structural formula 1-134 is selected from using two or more simultaneously Thiophene containing indeno and furans triaromatic amine compound.
The overall thickness of organic electroluminescence device organic layer of the invention is 1-1000nm, preferably 50-500nm.
When having the compound of structural formula I using the present invention, can arrange in pairs or groups makes organic electroluminescence device of the invention With other materials, such as in hole injection layer, hole transmission layer, luminescent layer, electron transfer layer, electron injecting layer and barrier layer Deng, and obtain blue and green light, yellow light, feux rouges or white light.
The hole transmission layer and hole injection layer of organic electroluminescence device of the present invention, material requested have good hole Transmission performance can effectively be transferred to hole on luminescent layer from anode.In addition to can be used with the compound of the present invention It outside, can also include other small molecules and macromolecular organic compound, including but not limited to carbazole compound, triaromatic amine Close object, benzidine compound, compound of fluorene class, phthalocyanine-like compound, the miscellaneous triphen of six cyano six (hexanitrilehexaazatriphenylene), tetra- cyanogen dimethyl-parabenzoquinone (F4- of 2,3,5,6- tetra- fluoro- 7,7', 8,8'- TCNQ), polyvinyl carbazole, polythiophene, polyethylene or polyphenyl sulfonic acid.
The luminescent layer of organic electroluminescence device of the invention has the good characteristics of luminescence, can be adjusted according to the needs The range of visible light.Except it is of the invention there is Compounds of structural formula I in addition to, following compound can also be contained, but not limited to this, Naphthalene compounds, pyrene compound, compound of fluorene class, luxuriant and rich with fragrance class compound,Class compound, glimmering anthracene compound, anthracene class chemical combination Object, pentacene class compound, class compound, two aromatic ethylene class compounds, triphenylamine ethylene compounds, aminated compounds, Benzimidazoles compound, furfuran compound, organic metal chelate complex.
The Organic Electron Transport Material of organic electroluminescence device of the present invention requires good electronic transmission performance, energy It reaches in effectively electronics from cathode transport to luminescent layer, there is very big electron mobility.It can choose following compound, but It is not limited to this: oxa- oxazole, thiazole compound, triazole compound, three nitrogen piperazine class compounds, triazine class chemical combination Object, quinoline class compound, phenodiazine anthracene compound, siliceous heterocycle compound, quinolines, ferrosin class compound, Metallo-chelate (such as Alq3), fluorine substituted benzene compound, benzimidazoles compound.
Electronics effectively can be injected into organic layer from cathode by the electron injecting layer of organic electroluminescence device of the present invention In, it is mainly selected from the alkali metal perhaps compound of alkali metal or compound or alkali selected from alkaline-earth metal or alkaline-earth metal Metal complex can choose following compound, but not limited to this: alkali metal, alkaline-earth metal, rare earth metal, alkali metal Oxide or halide, the oxide of alkaline-earth metal or halide, the oxide of rare earth metal or halide, alkali metal Or the organic complex of alkaline-earth metal；Preferably lithium, lithium fluoride, lithia, lithium nitride, 8-hydroxyquinoline lithium, caesium, carbonic acid Caesium, 8-hydroxyquinoline caesium, calcium, calcirm-fluoride, calcium oxide, magnesium, magnesium fluoride, magnesium carbonate, magnesia, these compounds can individually make With that can also be used with mixture, can also be used cooperatively with other electroluminescent organic materials.
Each layer of organic layer in organic electroluminescence device of the invention can be steamed by vacuum vapour deposition, molecular beam It is prepared by the modes such as plating method, the dip coating for being dissolved in solvent, spin-coating method, stick coating method or inkjet printing.Metal motor can be made It is prepared with vapour deposition method or sputtering method.
Device experimental shows the triaromatic amine compound of containing indeno thiophene and furans of the present invention as described in structural formula I, tool There are preferable thermal stability, high-luminous-efficiency, high luminance purity.Organic electroluminescence device using compound production has electricity The advantage that photoluminescence efficiency is good and excitation purity is excellent and the service life is long.
Detailed description of the invention
Fig. 1 is a kind of organic electroluminescence device structural schematic diagram of the invention；
Wherein, 110 be glass substrate, and 120 be anode, and 130 be hole injection layer, and 140 be hole transmission layer, and 150 be hair Photosphere, 160 be electron transfer layer, and 170 be electron injecting layer, and 180 be cathode.
Specific embodiment
In order to describe the present invention in more detail, spy lifts following example, and but not limited to this.
Embodiment 1
The synthetic route of intermediate A
The synthesis of intermediate A 1
In three-necked flask, sequentially add thienyl boric acid (10g, 78mmol), o-bromobenzoic acid methyl esters (16.7g, 76mmol), potassium carbonate (27g, 0.2mol), tetrahydrofuran (200mL), water (100mL), tetra-triphenylphosphine palladium (0.5g), in nitrogen It being heated to reflux under gas shielded 10 hours, cools down, is extracted with dichloromethane, is concentrated, crude product obtains 15.6g through column chromatographic purifying, Yield 92%.
The synthesis of intermediate A 2
In flask, intermediate A 1 (15g, 69.8mmol), n,N-Dimethylformamide (80mL) are sequentially added, at 0 DEG C Under, it is slowly added to N- bromine bromo-succinimide (12.5g, 70mmol), is reacted at room temperature 12 hours, water is added, uses methylene chloride Extraction, dry, concentration, crude product obtain 18g, yield 89% through column chromatographic purifying.
The synthesis of intermediate A
In three-necked flask, intermediate A 2 (15g, 50mmol), dry tetrahydrofuran (100mL) are sequentially added, in nitrogen It is cooled to 0 DEG C under protection, is slowly added to phenyl-magnesium-bromide grignard reagent (127mmol), drips off, is slowly increased to room temperature, stirring 12 Hour, add water, adjust pH value, methylene chloride extraction, concentration is added, acetic acid (100mL) and concentrated hydrochloric acid (3mL) is added, heats back Stream 5 hours, cooling, removing solvent, crude product are extracted through dichloromethane solvent, are washed, and the dry concentration of organic layer, crude product is through column Chromatographic purifying obtains 13.9g, yield 68%.
Embodiment 1
The synthetic route of intermediate B
The synthesis of intermediate B 1
For its synthetic method as the synthesis of intermediate A 1, raw materials used is furan boronic acid, yield 86%.
The synthesis of intermediate B 2
Its synthetic method is raw materials used to replace intermediate A 1, yield by intermediate B 1 as the synthesis of intermediate B 2 80%.
The synthesis of intermediate B
Its synthetic method is raw materials used to replace intermediate A 2, yield by intermediate B 2 as the synthesis of intermediate A 72%.
Embodiment 2
The synthetic route of compound 2
In flask, intermediate A (2g, 5mmol), two (4- tert-butyl-benzene) amine (1.4g, 5mmol), tertiary fourth are sequentially added Sodium alkoxide (1g, 10mmol), palladium acetate (50mg), X-phos (100mg), ortho-xylene (30mL), are heated back under nitrogen protection Stream 24 hours, it is cooling, solvent is removed, crude product obtains 2.55g, yield 85% with column chromatographic purifying.
The synthetic method of other embodiments is all intermediate C anti-as raw material, then with other amine as compound 2 It answers, table 1 specific as follows:
Table 1
Embodiment 18-33
The preparation of organic electroluminescence device
OLED is prepared using the compound of embodiment
Firstly, by electrically conducting transparent ito glass substrate 110 (having anode 120 above) (the limited public affairs of South China glass group share Department) successively pass through: deionized water, ethyl alcohol, acetone and deionized water were cleaned, then with oxygen plasma treatment 30 seconds.
Then, the PEDOT:PSS (Polyglycolic acid fibre-is poly- (styrene sulfonate)) of spin coating 45nm thickness is on ITO It is 30 minutes dry at 130,150 DEG C of hole injection layer.
Then, the compounds of this invention of 40nm thickness is deposited on hole injection layer as hole mobile material 140.
Then, the luminescent layer 150 of 30nm thickness is deposited on electronic barrier layer, wherein luminescent material based on CBP, and with The Ir (ppy) that weight ratio is 8%3Guest materials is adulterated as phosphorescence.
Then, the TMPYPB of 40nm thickness is deposited on the light-emitting layer as electron transfer layer 160.
Finally, vapor deposition 1nm LiF is electron injecting layer 170 and 80nm Al as device cathodes 180.
Prepared device (structural schematic diagram is shown in Fig. 1) with Photo Research PR650 spectrometer measure 100mA/cm2Current density under external quantum efficiency be such as table 2.
Comparative example 1
In addition to use HT1 replace the compounds of this invention as hole mobile material other than, comparative example prepares the method and reality of device It is the same to apply a 18-33.
Table 2
The structural formula of compound described in device is as follows:
From Table 2, it can be seen that the triaromatic amine compound of thiophene containing indeno of the invention and furans is used for organic electroluminescence Luminescent device can reduce operating voltage, improve device efficiency, be the hole mobile material with excellent performance.As described above, The compound of the present invention has high stability, and the organic electroluminescence device of preparation has high efficiency and optical purity.
The preferred embodiment of the present invention has been described in detail above.It should be appreciated that those skilled in the art without It needs creative work according to the present invention can conceive and makes many modifications and variations.Therefore, all technologies in the art Personnel are available by logical analysis, reasoning, or a limited experiment on the basis of existing technology under this invention's idea Technical solution, all should be within the scope of protection determined by the claims.

Claims (10)

1. the triaromatic amine compound of a kind of thiophene containing indeno and furans, which is characterized in that be the chemical combination for having the following structure Formulas I Object:
Wherein, R1-R6Independently selected from hydrogen, deuterium, halogen, cyano, the alkyl of C1-C12, substitution or unsubstituted C6-C30 The heteroaryl of aryl, substitution or unsubstituted C3-C30；
X is selected from O, S, N；
L is selected from aryl, substitution or the unsubstituted C3- of singly-bound, the alkyl of C1-C12, substitution or unsubstituted C6-C30 The heteroaryl of C30；
Ar1-Ar2Independently selected from hydrogen, the aryl of substitution or unsubstituted C6-C30, substitution or unsubstituted C3-C30 Heteroaryl；Ar1With Ar2Between it is not cyclic, either formed replace or unsubstituted C1-C12 five yuan or hexatomic ring.
2. the triaromatic amine compound of thiophene containing indeno and furans as described in claim 1, which is characterized in that R1-R2、Ar1- Ar2Independently selected from phenyl, diphenyl phenyl, naphthalene, naphthylphenyl, xenyl, terphenyl, three and phenyl, anthryl, phenanthrene Base, pyrenyl, base, fluoranthene base, acenaphthenyl, acenaphthylene base, fluorenyl, carbazyl, dibenzothiophene and dibenzofuran group, or with Upper group further replaces gained group by the alkyl of C1-C12.
3. the triaromatic amine compound of thiophene containing indeno and furans as described in claim 1, which is characterized in that R3-R6Independently Selected from methyl, phenyl, tert-butyl, ethyl, propyl, isopropyl.
4. the triaromatic amine compound of thiophene containing indeno and furans as described in claim 1, which is characterized in that described five yuan or The substituent group of hexatomic ring is selected from methyl, phenyl, tert-butyl, ethyl, propyl, isopropyl.
5. the triaromatic amine compound of thiophene containing indeno and furans as described in claim 1, which is characterized in that be having structure The compound of formula 1-134:
6. a kind of organic electroluminescence device, which includes anode, cathode and organic layer, and organic layer includes luminescent layer, hole Implanted layer, hole transmission layer, hole blocking layer, exciton barrier-layer, at least one layer in electron transfer layer, which is characterized in that institute State at least one layer of triaromatic amine compound containing thiophene containing indeno and furans as described in claim 1 in organic layer.
7. organic electroluminescence device as claimed in claim 6, which is characterized in that thiophene containing indeno described in claim 1 It is hole transmission layer with the layer where the triaromatic amine compound of furans.
8. organic electroluminescence device as claimed in claim 6, which is characterized in that thiophene containing indeno described in claim 1 It is used alone with the triaromatic amine compound of furans, or is used in mixed way with other compounds.
9. organic electroluminescence device as claimed in claim 6, which is characterized in that be used alone a kind of selected from such as claim The triaromatic amine compound of the thiophene containing indeno of structural formula 1-134 and furans described in 5, or simultaneously using two or more selected from such as The triaromatic amine compound of the thiophene containing indeno of structural formula 1-134 and furans described in claim 5.
10. organic electroluminescence device as claimed in claim 6, which is characterized in that the overall thickness of the organic layer is 1- 1000nm。
CN201811437590.9A 2018-11-28 2018-11-28 A kind of the triaromatic amine compound and luminescent device of thiophene containing indeno and furans Pending CN109232495A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115073480A (en) * 2021-03-10 2022-09-20 上海和辉光电股份有限公司 Luminescent material and organic electroluminescent device
CN115838374A (en) * 2021-09-08 2023-03-24 上海和辉光电股份有限公司 Luminescent material and organic electroluminescent device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115073480A (en) * 2021-03-10 2022-09-20 上海和辉光电股份有限公司 Luminescent material and organic electroluminescent device
CN115838374A (en) * 2021-09-08 2023-03-24 上海和辉光电股份有限公司 Luminescent material and organic electroluminescent device

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Application publication date: 20190118