CN104513244B - Simultaneously [2,1 a] Benzazole compounds and its application of 6 hydrogen iso-indoles - Google Patents

Simultaneously [2,1 a] Benzazole compounds and its application of 6 hydrogen iso-indoles Download PDF

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CN104513244B
CN104513244B CN201310456007.XA CN201310456007A CN104513244B CN 104513244 B CN104513244 B CN 104513244B CN 201310456007 A CN201310456007 A CN 201310456007A CN 104513244 B CN104513244 B CN 104513244B
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organic electroluminescence
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electroluminescence device
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CN104513244A (en
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赵东敏
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Zhejiang Chuangwei New Material Co., Ltd
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Chongqing Wonderful Biological Science And Technology Co Ltd
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Priority to CN201710818081.XA priority patent/CN107546339B/en
Priority to CN201310456007.XA priority patent/CN104513244B/en
Priority to CN201710819240.8A priority patent/CN107573927B/en
Priority to CN201710814416.0A priority patent/CN107602562A/en
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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D487/00—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00
    • C07D487/02—Heterocyclic compounds containing nitrogen atoms as the only ring hetero atoms in the condensed system, not provided for by groups C07D451/00 - C07D477/00 in which the condensed system contains two hetero rings
    • C07D487/04—Ortho-condensed systems
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
    • H10K85/60—Organic compounds having low molecular weight
    • H10K85/649—Aromatic compounds comprising a hetero atom
    • H10K85/657—Polycyclic condensed heteroaromatic hydrocarbons
    • H10K85/6572—Polycyclic condensed heteroaromatic hydrocarbons comprising only nitrogen in the heteroaromatic polycondensed ring system, e.g. phenanthroline or carbazole

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Abstract

The invention discloses a kind of 6 hydrogen iso-indoles simultaneously [2,1 a] Benzazole compounds, have such as formula（Ⅰ）Shown structural formula, wherein, X represents alkyl or aryl, R1Selected from selected from C5‑C30Nitrogen heterocyclic ring, substituted azetidine or thick nitrogen heterocyclic ring aromatic hydrocarbons.The compound can be used as electron transport material, green or the red phosphorescent material of main part of organic electroluminescence device, and the brightness and luminous efficiency that can make organic electroluminescence device improve, and reduce its driving voltage.

Description

Simultaneously [2,1-a] Benzazole compounds and its application of 6- hydrogen iso-indoles
Technical field
The present invention relates to a kind of organic compound, more particularly, to organic electroluminescence device luminescent layer material of main part Compound；The invention further relates to application of the compound in organic electroluminescence device.
Background technology
Electro optical phenomenon most early in 20th century the '30s be found, initial luminescent material is ZnS powder, is thus sent out LED technology has been put on display, has been widely applied to now on energy-conserving light source.And organic electroluminescent phenomenon is Pope in 1963 et al. Find earliest, they have found that the single layer crystal of anthracene under the driving of more than 100V voltages, can send faint blue light.Until Bi-layer devices are made in organic fluorescent dye by doctor Deng Qingyun of Kodak in 1987 et al. in a manner of vacuum evaporation, are being driven Under voltage of the voltage less than 10 volts, external quantum efficiency has reached 1% so that electroluminescent organic material and device are provided with reality With the possibility of property, the research of OLED material and device has been promoted significantly from this.
Relative to phosphor, electroluminescent organic material has advantages below：1. organic material processing characteristics is good, Can be by evaporation or the method for spin coating, the film forming on any substrate；2. the diversity of organic molecular structure can cause can By the method for Molecular Design and modification, to adjust the heat endurance of organic material, engineering properties, luminous and electric conductivity Can so that material is significantly improved space.
The principle of luminosity of organic electroluminescent diode is similar with inorganic light-emitting diode.When element is spread out by direct current During raw forward bias voltage drop, voltage energy will drive electronics in addition outside（Electron）With hole（Hole）Respectively by negative electrode and anode Injection element, when both meet in luminescent layer, combine, that is, the compound exciton of so-called electron-hole is formed, exciton passes through luminous The form of relaxation returns to ground state, so as to reach luminous purpose.
What the generation of organic electroluminescent was leaned on is the carrier transmitted in organic semiconducting materials（Electronics and hole）'s Restructuring, it is well known that the electric conductivity of organic material is very poor, unlike inorganic semiconductor, does not continue in organic semiconductor Energy band, the transmission of carrier conventional jump theory describes, i.e., under the driving of an electric field, electronics is being excited or is being injected into In the lumo energy of molecule, the purpose of electric charge transmission is reached via the lumo energy for jumping to another molecule.In order to make Organic electroluminescence device reaches breakthrough in application aspect, it is necessary to overcome organic material electric charge inject and transmittability difference it is tired It is difficult.Scientists make different organic layers by the adjustment of device architecture, such as the number of increase device organic material layer Play the part of different roles, such as the functional material having helps electronics to be injected from negative electrode and hole from anode, some materials help The transmission of electric charge, the material played the role of, which then plays, stops electronics and hole transport, most important certainly in organic electroluminescent The luminescent material of a variety of colors also to reach the purpose to match with adjacent functional material, excellent in efficiency long lifespan it is organic Electroluminescent device is typically the result of the optimization collocation of device architecture and various organic materials, and this is just designed for chemists The functionalization material for developing various structures provides greatly opportunities and challenges.
Common functionalization organic material has：Hole-injecting material, hole mobile material, hole barrier materials, electronics note Enter material, electron transport material, electron-blocking materials and light emitting host material and light-emitting guest（Dyestuff）Deng.
Hole-injecting material（HIM）It is required that its HOMO energy level between anode and hole transmission layer, is advantageous to increase boundary Hole injection between face.
Hole mobile material（HTM）, it is desirable to there is high heat endurance（High Tg）, with anode or hole-injecting material There is less potential barrier, higher cavity transmission ability can vacuum evaporation formation pin-hole free films.Conventional HTM is that fragrance is more Aminated compounds, mainly derivative of tri-arylamine group.
Electron transport material（Electron transport Material, ETM）It is required that ETM have it is reversible and sufficiently high Electrochemical reduction current potential, suitable HOMO and LUMO can rank value electronics is preferably injected, and be preferably provided with sky Cave blocking capability；Higher electron transport ability, the film forming having had and heat endurance.ETM is typically electron deficient knot The aromatic compound of the conjugate planes of structure.
Luminescent layer material of main part（host）Need to have following characteristics：Reversible electrochemical redox current potential is and adjacent Hole and the electron transfer layer HOMO that matches and LUMO can rank, good and the hole to match and electron transport ability are good Good high heat endurance and film forming, and suitable singlet or triplet state energy gap are used for controlling exciton in luminescent layer, Also energy transfer good between corresponding fluorescent dye or phosphorescent coloring.
The luminescent material of luminescent layer needs to have had the special feature that：With high fluorescence or phosphorescence quantum efficiency；Dyestuff Absorption spectrum has had overlapping with the emission spectrum of main body, i.e., main body is adapted to dyestuff energy, can be effectively from main body to dyestuff Energy transmission；Red, green, blue emission peak is as narrow as possible, with the excitation obtained；Stability is good, can be deposited etc..
Up to the present, new electroluminescent organic material is still among continuous research and development, it has been found that Yi Leixin Organic material, such as formula（I）It is shown：
It was found that this material may be used as material of main part in organic electroluminescence device, electric transmission material is also used as Material, has more excellent efficiency and brightness.
The content of the invention
The technical problems to be solved by the invention are the provision of a kind of new different Yin of 6- hydrogen for organic electroluminescent Diindyl simultaneously [2,1-a] Benzazole compounds, this compound such as formula（I）It is shown：
Wherein：X is selected from C1-C20Alkyl, C6-C20Aromatic radical, substitute C6-C20Aromatic radical.R1Selected from C5-C30It is nitrogenous Heterocycle, substituted azetidine or thick nitrogen heterocyclic ring aromatic hydrocarbons.
Preferably, described X is methyl, ethyl, propyl group, isopropyl, normal-butyl, isobutyl group, amyl group, isopentyl, ring penta Base, alkyl-substituted cyclopenta, n-hexyl, cyclohexyl, alkyl-substituted cyclohexyl, phenyl, alkyl-substituted phenyl, benzyl.
Preferably, the R1 be selected from pyridine radicals, substituted pyridinyl, pyridinylphenyl, benzimidazole, substituted benzimidazole, Benzothiazole, substitution benzothiazole, oxazole, substituted oxazole, pyrimidine, substituted pyrimidines, pyrazine, substitution pyrazine, triazine, substitution three Piperazine, quinolyl or isoquinolyl.
It is furthermore preferred that the compound is selected from following structural formula：
The luminescent layer material of main part of a kind of organic electroluminescence device, it is characterised in that its described material of main part can use 6- hydrogen iso-indoles of the present invention simultaneously [2,1-a] Benzazole compounds.
Also, a kind of organic electroluminescence device, including substrate, and sequentially form anode layer on the substrate, Several luminescence unit layers and cathode layer；
Described luminescence unit layer includes hole transmission layer, organic luminous layer and electron transfer layer, the luminescent layer Material of main part uses 6- hydrogen iso-indoles of the present invention simultaneously [2,1-a] Benzazole compounds
Also, simultaneously [2,1-a] Benzazole compounds may be used as red phosphorescent and light 6- hydrogen iso-indoles of the present invention The material of main part of layer, can also be as the material of main part of green phosphorescent luminescent layer.
Also, simultaneously [2,1-a] Benzazole compounds may be used as electron transfer layer material to 6- hydrogen iso-indoles of the present invention Material.
Also, simultaneously [2,1-a] Benzazole compounds can be used for organic electroluminescent to 6- hydrogen iso-indoles of the present invention Device.
Brief description of the drawings
Fig. 1 is the compound of the embodiment of the present invention 1（M1）Nuclear-magnetism figure.
Fig. 2 is the compound of the embodiment of the present invention 7（M7）Nuclear-magnetism figure.
Fig. 3 is the compound of the embodiment of the present invention 10（P2）Nuclear-magnetism figure.
Fig. 4 is the compound of the embodiment of the present invention 18（P1）Nuclear-magnetism figure.
Fig. 5 is the compound of the embodiment of the present invention 22（P14）Nuclear-magnetism figure.
Embodiment
Below will the invention will be further described by specific embodiment.
Embodiment 1
The present embodiment formula（M1）Shown intermediate：
Synthetic method is as follows：
（1）1-（2- iodine benzyls）The synthesis of -3- Methyl-1H-indoles
1000 milliliters of there-necked flasks, nitrogen protection is lower to add 700 milliliters of dimethyl sulfoxide (DMSO)s, 52 grams of potassium hydroxide, 26.2 grams of 3- Methyl indol, after 30 points of kinds are stirred at room temperature, add 50.5 grams of adjacent iodine benzyl chlorides.Then it is stirred at room temperature 3 hours, is poured into 2000 milliliters of water In, ethyl acetate extraction, it is washed to neutrality, silica gel post separation, petroleum ether：Ethyl acetate volume ratio=10：1 elution, obtains product 55.1 grams, MS（m/e）：347.
（2）The synthesis of 11- methyl -6H- iso-indoles simultaneously [2,1-a] indoles
1000 milliliters of there-necked flasks, nitrogen protection, mechanical agitation, add 34.7 grams of 1-（2- iodine benzyls）- 3- methyl isophthalic acid H- Yin Diindyl, 1 gram of copper powder, 30 grams of potassium carbonate, 600 milliliters of PEG400（Polyethylene glycol 400）, 180 degree is to slowly warm up to, is reacted 24 hours, Cooling, is poured into 2000 milliliters of water, dichloromethane extraction, after dichloromethane layer is dried with magnesium sulfate, silica gel column chromatography separation, and stone Oily ether：Ethyl acetate：Methylene chloride volume ratio=10：1：1 elution, obtains 10.2 grams of product, MS（m/e）：219.
（3）M1 synthesis
500 milliliters of there-necked flasks, add 9 grams of 11- methyl -6H- iso-indoles simultaneously [2,1-a] indoles, 300 milliliters of dichloromethane, 0-5 DEG C is cooled to, is slowly added dropwise 20 milliliters of dichloromethane solutions of 14.5 grams of bromines, drop finishes that to be to slowly warm up to 20 DEG C of reactions 2 small When, add solution of sodium bisulfite washing, washing, dichloromethane layer silica gel post separation, petroleum ether：Ethyl acetate：Dichloromethane Volume ratio=10：1：1 elution, obtains 12.1 grams of product, MS（m/e）：377, product M1 nuclear magnetic spectrogram（1H）As shown in accompanying drawing 1.
Embodiment 2
The present embodiment formula（M2）Shown intermediate：
Synthetic method is as follows：
500 milliliters of there-necked flasks, under nitrogen protection, 3.8 grams of M1 are added, 300 milliliters of DMSO, are slowly added to 1.6 grams of contents 60% Sodium hydride, stirring 30 minutes after, add 4.3 grams of iodomethane, react at room temperature 12 hours, it is unreacted to add a small amount of Methanol Decomposition After sodium hydride, reaction solution is poured into 900 milliliters of water, dichloromethane extraction, washing, dichloromethane layer silica gel post separation, oil Ether：Ethyl acetate：Methylene chloride volume ratio=10：1：1 elution, obtains 3.0g grams of product, MS（m/e）：405.
3-embodiment of embodiment 6
With reference to the method for embodiment 2, intermediate M3-M6 totally 4 intermediates are prepared for, specific data are as follows：
Embodiment 7
The present embodiment formula（M7）Shown intermediate：
Synthetic method is as follows：
500 milliliters of there-necked flasks, nitrogen protection add 3.8 grams of M1,300 milliliters of DMSO, are slowly added to 1.6 grams of contents 60% Sodium hydride, after stirring 30 minutes, 6.0 grams of iodobenzenes are added, 0.6 gram of Pd (dppp) Cl2, are to slowly warm up to 50 DEG C, are reacted 24 hours, After adding the unreacted sodium hydride of a small amount of Methanol Decomposition, reaction solution is poured into 900 milliliters of water, dichloromethane extraction, washing, two Chloromethanes layer silica gel post separation, petroleum ether：Ethyl acetate：Methylene chloride volume ratio=10：1：1 elution, obtains 1.5g grams of product, MS（m/e）：529, product M7 nuclear magnetic spectrogram（1H）As shown in accompanying drawing 2.
8-embodiment of embodiment 9
According to the method for embodiment 7, intermediate M8 and M9 totally 2 intermediates are prepared for, specific data are as follows：
Embodiment 10
Compound manufactured in the present embodiment such as formula（P2）It is shown：
Synthetic method is as follows：
250 milliliters of there-necked flasks, add 4.0g M2,2.7g pyridine -3- boric acid, 0.6g tetra-triphenylphosphine palladiums, 9.1g carbonic acid Potassium, 80 milliliters of toluene, 50 milliliters of ethanol, 30 milliliters of water, under nitrogen protection, heating reflux reaction 8 hours, cool, filtering, solid After drying, silica gel column chromatography separation, petroleum ether：Ethyl acetate：Methylene chloride volume ratio=10：1：3 elutions, obtain product 3.1g Gram, MS（m/e）：401, compound P2 nuclear magnetic spectrogram（1H）As shown in accompanying drawing 3.
11-embodiment of embodiment 17
According to the method for embodiment 10, using intermediate M2 and corresponding acid reaction, following 7 products have been synthesized, Specific data are as follows：
Embodiment 18
Compound manufactured in the present embodiment such as formula（P1）It is shown：
Synthetic method is as follows：
500 milliliters of there-necked flasks, 4.0g M2 are added, 300 milliliters of tetrahydrofurans, -78 DEG C is cooled to, is slowly added dropwise 10 milliliters 2.4M butyl lithium hexane solution, finish and be incubated 1 hour in -78 DEG C, add 5.6g triisopropyl borate esters, be warmed to room temperature naturally Reaction 2 hours, is poured into aqueous ammonium chloride solution, ethyl acetate extraction organic layer, after organic layer magnesium sulfate is dried, is concentrated into It is dry, it is directly added into 80 milliliters of toluene, 50 milliliters of ethanol, 30 milliliters of water, 1.13g2- chloropyridines, 0.4g tetra-triphenylphosphine palladiums, nitrogen Under protection, heating reflux reaction 8 hours, cool, filtering, after solid is dried, silica gel column chromatography separation, petroleum ether：Ethyl acetate： Methylene chloride volume ratio=10：1：3 elutions, obtain 1.4g grams of product, MS（m/e）：401, compound P1 nuclear magnetic spectrogram（1H）See Shown in accompanying drawing 4.
19-embodiment of embodiment 21
According to the method for embodiment 18, reacted using intermediate M2 and corresponding chloro thing, synthesized following 3 productions Product, specific data are as follows：
Embodiment 22
Compound manufactured in the present embodiment such as formula（P14）It is shown：
The same P11 of synthetic method, simply changes M2 into M7, obtains 6.1g grams of product, MS（m/e）：857, compound P14 core Magnetic spectrum figure（1H）As shown in accompanying drawing 5.
Embodiment 23
Compound manufactured in the present embodiment such as formula（P15）It is shown：
The same P2 of synthetic method, simply changes M2 into M7, obtains 4.1g grams of product, MS（m/e）：525.
Embodiment 24
Compound manufactured in the present embodiment such as formula（P16）It is shown：
The same P7 of synthetic method, simply changes M2 into M3, obtains 6.7g grams of product, MS（m/e）：919.
Embodiment 25
Compound manufactured in the present embodiment such as formula（P17）It is shown：
The same P13 of synthetic method, simply changes M2 into M3, obtains 3.3g grams of product, MS（m/e）：845.
Embodiment 26
Compound manufactured in the present embodiment such as formula（P18）It is shown：
The same P3 of synthetic method, simply changes M2 into M4, obtains 5.7g grams of product, MS（m/e）：693.
Embodiment 27
Compound manufactured in the present embodiment such as formula（P19）It is shown：
The same P2 of synthetic method, simply changes M2 into M4, obtains 4.1g grams of product, MS（m/e）：541.
Embodiment 28
Compound manufactured in the present embodiment such as formula（P21）It is shown：
The same P8 of synthetic method, simply changes M2 into M5, obtains 5.6g grams of product, MS（m/e）：733.
Embodiment 29
Compound manufactured in the present embodiment such as formula（P22）It is shown：
The same P3 of synthetic method, simply changes M2 into M5, obtains 6.1g grams of product, MS（m/e）：773.
Embodiment 30
Compound manufactured in the present embodiment such as formula（P23）It is shown：
The same P12 of synthetic method, simply changes M2 into M8, obtains 2.1g grams of product, MS（m/e）：707.
Embodiment 31
Compound manufactured in the present embodiment such as formula（P24）It is shown：
The same P3 of synthetic method, simply changes M2 into M8, obtains 2.1g grams of product, MS（m/e）：705.
Embodiment 32
Compound manufactured in the present embodiment such as formula（P25）It is shown：
The same P1 of synthetic method, simply changes M2 into M9, obtains 3.0g grams of product, MS（m/e）：843.
Embodiment 33
Compound manufactured in the present embodiment such as formula（P26）It is shown：
The same P3 of synthetic method, simply changes M2 into M9, obtains 5.6g grams of product, MS（m/e）：841.
Embodiment 34
Compound manufactured in the present embodiment such as formula（P27）It is shown：
The same P2 of synthetic method, simply changes M2 into M6, obtains 5.0g grams of product, MS（m/e）：553.
Embodiment 35
Compound manufactured in the present embodiment such as formula（P28）It is shown：
The same P3 of synthetic method, simply changes M2 into M6, obtains 5.2g grams of product, MS（m/e）：705.
It is the Application Example of the compounds of this invention below：
The typical structure of OLED organic electroluminescence devices is：
Substrate/anode/hole transmission layer（HTL）/ organic luminous layer（EL）/ electron transfer layer (ETL)/negative electrode
Substrate can use the substrate in conventional organic luminescence organic electroluminescence device, such as：Glass or plastics.Anode Material can use transparent high conductivity material, such as indium tin oxygen (ITO), indium zinc oxygen (IZO), tin ash (SnO2), oxygen Change zinc (ZnO) etc..Glass substrate is selected in the organic electroluminescence device of the present invention makes, ITO makees anode material.
Hole transmission layer can use N, N '-two (3- tolyls)-N, N '-diphenyl-[1,1- xenyls] -4,4 '-two Amine (TPD) or N, N ' the tri-arylamine group material such as-diphenyl-N, N '-two (1- naphthyls)-(1,1 '-xenyl) -4,4 '-diamines (NPB) Material.Wherein NPB is conventional hole mobile material, and selected hole passes in the organic electroluminescence device of the present invention makes Defeated material selection NPB.
Organic electroluminescence device structure can be that single-shot photosphere can also be multi-luminescent layer structure.
Electron transfer layer either TAZ or TPBi or is derived from any two kinds of collocation of these three materials using Alq3.
Selected cathode material is LiF/Al in the organic electroluminescence device of the present invention makes.
The different materials concrete structure used in the present invention is seen below：
Embodiment 36：
The present embodiment prepares 16 organic electroluminescence devices altogether, and its structure is：ITO/NPB（40nm）/EM1(30nm)/ ETL materials（20nm）/LiF（0.5nm）/Al（150nm）；
One of contrast organic electroluminescence device, electron transport material select Bphen, remaining 15 organic electroluminescence hair Material of the optical device from the present invention.
Organic electroluminescence device preparation process is as follows in the present embodiment：
The glass plate for being coated with transparent conductive layer is ultrasonically treated in commercial detergent, rinsed in deionized water, In acetone：Ultrasonic oil removing in alcohol mixed solvent, it is baked under clean environment and removes moisture content completely, it is clear with ultraviolet light and ozone Wash, and with low energy cation beam bombarded surface;
The above-mentioned glass substrate with anode is placed in vacuum chamber, is evacuated to 1 × 10-5~9 × 10-3Pa, above-mentioned Anode tunic vacuum evaporation NPB is 50nm as hole transmission layer, evaporation rate 0.1nm/s, evaporation thickness；
Luminescent layers of the vacuum evaporation EM1 as device on hole transmission layer, evaporation rate 0.1nm/s, evaporation are total Thickness is 30nm；
The electricity of one layer of vacuum evaporation compound or Bphen of the invention as organic electroluminescence device on luminescent layer Sub- transport layer, its evaporation rate are 0.1nm/s, and evaporation total film thickness is 50nm；
In electron transfer layer（ETL）Upper vacuum evaporation 0.5nm LiF is as electron injecting layer, and 150nm Al is as cloudy Pole.
Organic electroluminescence device performance see the table below：
By upper table, it can be seen that, organic material of the invention may be used as electron transfer layer in organic electroluminescence device Materials'use.
Embodiment 37：
The compound of the present invention is as the material of main part in red phosphorescent OLED organic electroluminescence devices：
7 organic electroluminescence devices are prepared altogether, and organic electroluminescence device structure is：
ITO/NPB（20nm）/ feux rouges material of main part (30nm)：Ir（piq）3[5%]/TPBI（10nm）/Alq3（15nm）/ LiF（0.5nm）/Al（150nm）.
One of them is contrast organic electroluminescence device, and feux rouges material of main part selects CBP, other 6 organic electroluminescences hairs Material of the optical device from the present invention.
Organic electroluminescence device preparation process is as follows：The glass plate for being coated with transparent conductive layer is cleaned in commercialization It is ultrasonically treated in agent, rinses in deionized water, in acetone：Ultrasonic oil removing in alcohol mixed solvent, is toasted under clean environment Moisture content is removed to complete, with ultraviolet light and ozone clean, and with low energy cation beam bombarded surface;
The above-mentioned glass substrate with anode is placed in vacuum chamber, is evacuated to 1 × 10-5~9 × 10-3Pa, Vacuum evaporation hole transmission layer NPB on above-mentioned anode tunic, evaporation rate 0.1nm/s, evaporation thickness are 20nm；
Vacuum evaporation light emitting host material and dyestuff on hole transmission layer, as the luminous of organic electroluminescence device Layer, evaporation rate 0.1nm/s, evaporation total film thickness is 30nm；
Vacuum evaporation electron transfer layer TPBI and Alq3, its evaporation rate are 0.1nm/s successively on luminescent layer, are steamed It is respectively 10nm and 15nm to plate thickness；
Vacuum evaporation 0.5nm LiF on the electron transport layer, 150nm Al are as negative electrode.
Organic electroluminescence device performance see the table below：
By upper table it can be seen that, using chemical combination of the present invention as phosphorescence host organic electroluminescence device relative to use CBP obtains preferable effect as the organic electroluminescence device of main body, obtains higher current efficiency and relatively low drive Dynamic voltage.
Embodiment 38：
The compound of the present invention is as the material of main part in green phosphorescent OLED organic electroluminescence devices：
8 organic electroluminescence devices are prepared altogether, and organic electroluminescence device structure is：
ITO/NPB（20nm）/ green glow material of main part (30nm)：Ir（ppy）3[7%]/TPBI（10nm）/Alq3（15nm）/ LiF（0.5nm）/Al（150nm）.
One of them is contrast organic electroluminescence device, and green glow material of main part selects CBP, other 7 organic electroluminescences Material of the luminescent device from the present invention.
Organic electroluminescence device preparation process is as follows：The glass plate for being coated with transparent conductive layer is cleaned in commercialization It is ultrasonically treated in agent, rinses in deionized water, in acetone：Ultrasonic oil removing in alcohol mixed solvent, is toasted under clean environment Moisture content is removed to complete, with ultraviolet light and ozone clean, and with low energy cation beam bombarded surface;
The above-mentioned glass substrate with anode is placed in vacuum chamber, is evacuated to 1 × 10-5~9 × 10-3Pa, Vacuum evaporation hole transmission layer NPB on above-mentioned anode tunic, evaporation rate 0.1nm/s, evaporation thickness are 20nm；
Vacuum evaporation light emitting host material and dyestuff on hole transmission layer, as the luminous of organic electroluminescence device Layer, evaporation rate 0.1nm/s, evaporation total film thickness is 30nm；
Vacuum evaporation electron transfer layer TPBI and Alq3, its evaporation rate are 0.1nm/s successively on luminescent layer, are steamed It is respectively 10nm and 15nm to plate thickness；
Vacuum evaporation 0.5nm LiF on the electron transport layer, 150nm Al are as electron injecting layer and negative electrode.
Organic electroluminescence device performance see the table below：
By upper table it can be seen that, using chemical combination of the present invention as phosphorescence host organic electroluminescence device relative to use CBP obtains preferable effect as the organic electroluminescence device of main body, obtains higher current efficiency and relatively low drive Dynamic voltage.
Obviously, above-described embodiment is only intended to clearly illustrate example, and is not the restriction to embodiment.It is right For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of change or Change.There is no necessity and possibility to exhaust all the enbodiments.And the obvious change thus extended out or Among changing still in the protection domain of the invention.

Claims (2)

1. a kind of 6- hydrogen iso-indoles simultaneously [2,1-a] Benzazole compounds, it is characterised in that there is the structure as shown in formula (1)：
Wherein：X is selected from methyl, ethyl, propyl group, isopropyl, normal-butyl, isobutyl group, amyl group, isopentyl, cyclopenta, alkyl substitution Cyclopenta, n-hexyl, cyclohexyl, alkyl-substituted cyclohexyl, phenyl, alkyl-substituted phenyl, benzyl；
R1 is selected from pyridine radicals, substituted pyridinyl, pyridinylphenyl, benzimidazole, substituted benzimidazole, benzothiazole, substituted benzene And thiazole, oxazoles, substituted oxazole, pyrimidine, substituted pyrimidines, pyrazine, substitution pyrazine, triazine, substitution triazine, quinolyl or isoquinolin Base.
6- hydrogen iso-indoles below 2. shown in structure simultaneously [2,1-a] Benzazole compounds：
CN201310456007.XA 2013-09-29 2013-09-29 Simultaneously [2,1 a] Benzazole compounds and its application of 6 hydrogen iso-indoles Active CN104513244B (en)

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CN201710818055.7A CN107556321A (en) 2013-09-29 2013-09-29 A kind of organic electroluminescence device
CN201710818081.XA CN107546339B (en) 2013-09-29 2013-09-29 A kind of organic electroluminescence device
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US20030228487A1 (en) * 2002-05-14 2003-12-11 Lightronik Technology Inc., Organic electroluminescence element
WO2012040923A1 (en) * 2010-09-29 2012-04-05 Merck Sharp & Dohme Corp. Tetracyclic indole derivatives and methods of use thereof for the treatment of viral diseases
WO2012050848A1 (en) * 2010-09-29 2012-04-19 Schering Corporation Fused tetracycle derivatives and methods of use thereof for the treatment of viral diseases

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CN1192684C (en) * 2002-06-05 2005-03-09 谢爽 Organic electroluminescent device

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US20030228487A1 (en) * 2002-05-14 2003-12-11 Lightronik Technology Inc., Organic electroluminescence element
WO2012040923A1 (en) * 2010-09-29 2012-04-05 Merck Sharp & Dohme Corp. Tetracyclic indole derivatives and methods of use thereof for the treatment of viral diseases
WO2012050848A1 (en) * 2010-09-29 2012-04-19 Schering Corporation Fused tetracycle derivatives and methods of use thereof for the treatment of viral diseases

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