CN107840835A - New heterocyclic compound and utilize its organic illuminating element - Google Patents

New heterocyclic compound and utilize its organic illuminating element Download PDF

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CN107840835A
CN107840835A CN201710623704.8A CN201710623704A CN107840835A CN 107840835 A CN107840835 A CN 107840835A CN 201710623704 A CN201710623704 A CN 201710623704A CN 107840835 A CN107840835 A CN 107840835A
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CN107840835B (en
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许东旭
李东勋
朴胎润
许净午
张焚在
韩美连
郑珉祐
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LG Chem Ltd
LG Corp
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Abstract

The present invention provides a kind of new heterocyclic compound and utilizes its organic illuminating element.

Description

New heterocyclic compound and utilize its organic illuminating element
Technical field
The present invention relates to a kind of new heterocyclic compound and include its organic illuminating element.
Background technology
Generally, organic light emission phenomenon refers to the phenomenon that luminous energy is converted electrical energy into by using organic material.Using organic The organic illuminating element visual angle of luminescence phenomenon is wide, contrast is excellent, the response time is fast, and brightness, driving voltage and response speed Excellent performance is spent, therefore substantial amounts of research has been carried out to organic illuminating element.
Organic illuminating element, which typically has, includes anode, negative electrode and the structure for being placed in organic material layer therebetween.It is described to have Machine material layer has the sandwich construction being made up of respectively different materials, to improve the efficiency of organic illuminating element and stability, example Such as, hole injection layer, hole transmission layer, luminescent layer, electron transfer layer, electron injecting layer etc. can be included.In this organic light emission In the structure of element, if applying voltage between two electrodes, hole is from anode injection organic material layer and electronics from the moon Pole injection organic material layer, exciton can be formed when injected holes and electrode meet, and can be sent out when exciton returns ground state Light.
For the organic material as described above for organic illuminating element, it is necessary to persistently develop new material.
Citation
Patent document 1:Korean Patent Publication No. 10-2000-0051826
The content of the invention
Technical problem
The present invention provides a kind of new heterocyclic compound and includes its organic illuminating element.
Technical scheme
The present invention provides a kind of compound represented by formula 1 below.
[chemical formula 1]
In the chemical formula 1,
X is O or S,
R1To R4In at least two be identical-L-Ar, remaining is hydrogen,
L is singly-bound;Substituted or unsubstituted C6-60Arlydene;It is or substituted or unsubstituted comprising in O, N, Si and S The C of one or more atoms2-60Heteroarylidene,
Ar is substituted or unsubstituted C6-60Aryl;Or it is substituted or unsubstituted include O, N, Si and S in one or The C of multiple atoms2-60Heteroaryl,
But Ar is not pyridine radicals.
In addition, the present invention provides a kind of organic illuminating element, the organic illuminating element includes:First electrode;With it is described The relative second electrode of first electrode;And one or more layers organic material between the first electrode and the second electrode The bed of material, one or more layers organic material layer includes the compound represented by the chemical formula 1 in the organic material layer.
Invention effect
The described compound represented by chemical formula 1 can be used as the material of the organic material layer of organic illuminating element, and Efficiency and low driving voltage and/or life performance can be improved in organic illuminating element.Especially, it is described by chemical formula 1 The compound of expression can be used as hole injection, hole transport, hole injection and transmission, luminous, electric transmission or electron injection material Material.
Brief description of the drawings
Fig. 1 shows the example of the organic illuminating element comprising substrate 1, anode 2, luminescent layer 3 and negative electrode 4.
Fig. 2 is shown comprising substrate 1, anode 2, hole injection layer 5, hole transmission layer 6, luminescent layer 7, the and of electron transfer layer 8 The example of the organic illuminating element of negative electrode 4.
Embodiment
In order to help to understand the present invention, it is described in more detail below.
The present invention provides the compound represented by the chemical formula 1.
In this manual,OrIntention is connected to the key of other substituents.
In this manual, term " substitution is unsubstituted " intention is by selected from deuterium;Halogen group;Itrile group;Nitro;Hydroxyl; Carbonyl;Ester group;Imide;Amino;Phosphine epoxide;Alkoxy;Aryloxy group;Alkyl sulfide epoxide (alkylthioxy group);Virtue Base sulphur epoxide;Alkyl sulphonyl (alkylsulfoxy group);Aryl sulfonyl;Silicyl (silyl group);Boron Base;Alkyl;Cycloalkyl;Alkenyl;Aryl;Aralkyl;Arylalkenyl;Alkylaryl;Alkyl amine group;Aralkyl amido;Heteroaryl amine Base;Arylamine group;Aryl phosphino-;Or one or more of heterocyclic radical comprising one or more N, O and S atom substituent takes In generation, is unsubstituted, or the connected substitution or unsubstituted of two or more substituents in the substituent illustrated in intention.For example, " the connected substituent of two or more substituents " can be xenyl.In other words, it can be understood as xenyl can be virtue The substituent that base or two phenyl are connected.
In this manual, the carbon number of carbonyl is not particularly limited, but carbon number is preferably 1 to 40.Specifically For, the compound of following structure, but not limited to this can be included.
In this manual, for ester group, the oxygen of ester group can be by straight chain, side chain or loop chain that carbon number is 1 to 25 Alkyl or the aryl that carbon number is 6 to 25 substitute.Specifically, the compound of following structural formula can be included, but be not limited to This.
In this manual, the carbon number of imide is not particularly limited, but carbon number is preferably 1 to 25. Specifically, the compound of following structure, but not limited to this can be included.
In this manual, silicyl is specifically comprising trimethyl silyl, triethylsilyl, tert-butyl group diformazan Base silicyl, vinyldimethylsilyl, propyl-dimethyl silicyl, triphenyl-silyl, diphenylmethyl silicon Alkyl, phenyl silyl groups etc., but not limited to this.
In this manual, boryl is specifically comprising trimethyl boryl, triethyl group boryl, fert-butyidimethylsilyl boryl, triphen Base boryl, phenyl boryl etc., but not limited to this.
In this manual, the example of halogen group includes fluorine, chlorine, bromine or iodine.
In this manual, the alkyl can be straight or branched, and carbon number is not particularly limited, but preferably For 1 to 40.According to an embodiment, the carbon number of the alkyl is 1 to 20.According to another embodiment, the alkane The carbon number of base is 1 to 10.According to further embodiment, the carbon number of the alkyl is 1 to 6.The specific reality of alkyl Example includes methyl, ethyl, propyl group, n-propyl, isopropyl, butyl, normal-butyl, isobutyl group, the tert-butyl group, sec-butyl, 1- methyl-fourth Base, 1- Ethyl-butyls, amyl group, n-pentyl, isopentyl, neopentyl, tertiary pentyl, hexyl, n-hexyl, 1- methyl amyls, 2- methyl Amyl group, 4- methyl -2- amyl groups, 3,3- dimethylbutyls, 2- ethyl-butyls, heptyl, n-heptyl, 1- methylhexyls, cyclopenta first Base, cyclohexyl methyl, octyl group, n-octyl, t-octyl, 1- methylheptyls, 2- ethylhexyls, 2- propylpentyls, n-nonyl, 2,2- Methylheptyl, 1- Ethyl-propyls, 1,1- Dimethyl-propyls, isohesyl, 2- methyl amyls, 4- methylhexyls, 5- methylhexyls Deng, but not limited to this.
In this manual, the alkenyl can be straight or branched, and carbon number is not particularly limited, but preferably For 2 to 40.According to an embodiment, the carbon number of the alkenyl is 2 to 20.According to another embodiment, the alkene The carbon number of base is 2 to 10.According to further embodiment, the carbon number of the alkenyl is 2 to 6.Instantiation includes Vinyl, 1- acrylic, isopropenyl, 1- cyclobutenyls, 2- cyclobutenyls, 3- cyclobutenyls, 1- pentenyls, 2- pentenyls, 3- amylenes Base, 3-methyl-1-butene base, 1,3- butadienyls, pi-allyl, 1- phenyl vinyl -1- bases, 2- phenyl vinyl -1- bases, 2, Double (diphenyl -1- bases) ethene of 2- diphenylacetylene -1- bases, 2- phenyl -2- (naphthyl -1- bases) vinyl -1- bases, 2,2- Base -1- bases, stilbene radicals (stilbenyl group), styryl etc., but not limited to this.
In this manual, cycloalkyl is not particularly limited, but carbon number is preferably 3 to 60.According to an implementation Scheme, the carbon number of the cycloalkyl is 3 to 30.According to another embodiment, the carbon number of the cycloalkyl for 3 to 20.According to further embodiment, the carbon number of the cycloalkyl is 3 to 6.Specifically comprising cyclopropyl, cyclobutyl, ring penta Base, 3- methylcyclopentyls, 2,3- dimethylcyclopentyls, cyclohexyl, 3- methylcyclohexyls, 4- methylcyclohexyls, 2,3- methyl rings Hexyl, 3,4,5- trimethylcyclohexyls, 4- tert-butylcyclohexyls, suberyl, cyclooctyl etc., but not limited to this.
In this manual, aryl is not particularly limited, but carbon number is preferably 6 to 60, can be monocyclic aryl Or polyaromatic.According to an embodiment, the carbon number of the aryl is 6 to 30.It is described according to another embodiment The carbon number of aryl is 6 to 20.The monocyclic aryl can include phenyl, xenyl, terphenyl etc., but not limited to this.Institute State polyaromatic can include naphthyl, anthryl, phenanthryl, pyrenyl, base,Base (crycenyl), fluorenyl etc., but not limited to this.
In this manual, fluorenyl can be substituted, and two substituents can bond together and form spirane structure.Work as institute State fluorenyl it is substituted when, can include Deng, but not limited to this.
In this manual, heterocyclic radical is as heteroatomic heterocyclic radical, to carbon original comprising one or more O, N, Si and S Subnumber is not particularly limited, but carbon number is preferably 2 to 60.The example of heterocyclic radical include thienyl, furyl, pyrrole radicals, Imidazole radicals, thiazolyl, oxazolyl, oxadiazolyls, triazolyl, pyridine radicals, bipyridyl, pyrimidine radicals, triazine radical, triazolyl, a word used for translation Piperidinyl, pyridazinyl, pyrazinyl, quinolyl, quinazolyl, quinoxalinyl, phthalazinyl, Pyridopyrimidine base, pyrido-pyrazine base, Pyrazine and pyrazinyl, isoquinolyl, indyl, carbazyl, benzoxazolyl, benzimidazolyl, benzothiazolyl, benzo carbazole Base, benzothienyl, dibenzothiophenes base, benzofuranyl, phenanthroline (phenanthroline), thiazolyl, isoxazoles Ji, oxadiazolyls, thiadiazolyl group, benzothiazolyl, phenothiazinyl, dibenzofuran group etc., but not limited to this.
In this manual, the aryl in aralkyl, arylalkenyl, alkylaryl, arylamine group and foregoing Examples of aryl groups It is identical.In this manual, alkyl is identical with foregoing examples of alkyl in aralkyl, alkylaryl, alkyl amine group.In this explanation In book, the foregoing description to heterocyclic radical is applicable to the heteroaryl in heteroaryl amido.In this manual, alkenyl in arylalkenyl It is identical with foregoing alkenyl example.In this manual, the foregoing description to aryl is applicable to arlydene, and divalent group Except.In this manual, the foregoing description to heterocyclic radical is applicable to heteroarylidene, and except divalent group.At this In specification, the foregoing description to aryl or cycloalkyl is applicable to hydrocarbon ring, non-univalent perssad and two substituents bondings and shape Except.In this manual, the foregoing description to heterocyclic radical is applicable to heterocycle, non-univalent perssad and two substituent keys Close and formed except.
Preferably, R1To R4In two be identical-L-Ar, remaining is hydrogen.That is, the compound represented by the chemical formula 1 It can be represented by any one chemical formula in formula 1 below -1 to 1-6.
[chemical formula 1-1]
[chemical formula 1-2]
[chemical formula 1-3]
[chemical formula 1-4]
[chemical formula 1-5]
[chemical formula 1-6]
Preferably, L is singly-bound or any one selected from following group,
It is highly preferred that L is 1,3- phenylenes, Isosorbide-5-Nitrae-phenylene or biphenyl -4,4 '-diyl (biphenyl-4,4 ' - diyl)。
Preferably, Ar is any one selected from following group,
In the chemical formula,
X1、X2And X3It is separately CH or N,
X4And X5It is separately S, O or NH,
X6And X7It is separately CH or N,
X8To X10In it is at least one be N, remaining is CH,
R1To R7It is separately hydrogen, C6-60Aryl or the C for including one or more of O, N, Si and S atom2-60 Heteroaryl.
Hereinbefore, X is worked as1To X7For NH or CH when, can be connected instead of NH or CH HOr substituted R1To R4
Preferably, R1To R7It is separately hydrogen, phenyl, xenyl, naphthyl or pyridine radicals.
It is highly preferred that Ar is any one selected from following group,
Preferably, the compound represented by the chemical formula 1 is any compound selected from following group,
The compound represented by the chemical formula 1 can be prepared by the preparation method of such as formulas below 1.For described Preparation method, more specifically described in preparation example described later.
[reaction equation 1]
In the reaction equation 1,
X、R1、R2、R3、R4, L and Ar definition it is same as mentioned above,
R′1To R '4In at least two be 4,4,5,5- tetramethyl -1,3,2- dioxaborolanes bases (4,4,5,5- Tetramethyl-1,3,2-dioxaborolanyl) and remaining is hydrogen, and X ' is halogen, or R '1To R '4In at least two be Halogen and remaining be hydrogen, X ' is 4,4,5,5- tetramethyls -1,3,2- dioxaborolanes base (4,4,5,5-tetramethyl- 1,3,2-dioxaborolanyl)。
The reaction is preferably carried out in the presence of potassium carbonate.In addition, the reaction is preferably in tetra-triphenylphosphine palladium (tetrakistriphenyl-phosphinopalladium) carried out under catalyst.Carried out 1 hour moreover, the reaction is preferred To 10 hours, reaction can also be cleaned and/or dried as needed after terminating.
In addition, the present invention provides a kind of organic illuminating element for including the compound represented by the chemical formula 1.As one Individual example, the present invention provide a kind of organic illuminating element, and it is included:First electrode;Second electricity relative with the first electrode Pole;And one or more layers organic material layer between the first electrode and the second electrode, the organic material layer In one or more layers include the compound that is represented by the chemical formula 1.
The organic material layer of the organic illuminating element of the present invention can be that single layer structure or two layers or multilayer are organic The sandwich construction of material layer.Noted for example, the organic illuminating element of the present invention can have as organic material layer comprising hole Enter the structure of layer, hole transmission layer, luminescent layer, electron transfer layer, electron injecting layer etc., but the structure of organic illuminating element is unlimited In this, less organic layer can be included.
In addition, the organic material layer can include hole injection layer, hole transmission layer or carry out hole injection and biography simultaneously Defeated layer, the hole injection layer, hole transmission layer or carries out the layer of hole injection and transmission and includes by the chemical formula simultaneously 1 compound represented.
In addition, the organic material layer can include luminescent layer, the luminescent layer includes the chemical combination represented by the chemical formula 1 Thing.
In addition, the organic material layer can include electron transfer layer or electron injecting layer, the electron transfer layer or electricity Sub- implanted layer includes the compound represented by the chemical formula 1.
In addition, the electron transfer layer, electron injecting layer or carry out simultaneously electron injection and electric transmission layer include by The compound that the chemical formula 1 represents.Especially, have excellent heat steady according to the compound represented by chemical formula 1 of the present invention HOMO energy levels, high triplet energies (ET) and the hole stability qualitative, more than 6.0eV is deep.Moreover, will be by the chemistry The compound that formula 1 represents is used to carry out the organic material layer of electron injection and electric transmission simultaneously when, this can be used in mixed way N-type dopant used in industry.
In addition, the organic material layer can include luminescent layer and electron transfer layer, the electron transfer layer is included by described The compound that chemical formula 1 represents.
In addition, the organic illuminating element of the present invention can have anode, one or more layers organic material layer and negative electrode The organic illuminating element for the structure (normal type) being sequentially laminated on substrate.Moreover, the organic illuminating element of the present invention can To be that there is negative electrode, one or more layers organic material layer and anode to be sequentially laminated the reverse geometry (inverted on substrate Type organic illuminating element).For example, the structure of the organic illuminating element of one embodiment of the invention is shown in Fig. 1 and Fig. 2.
Fig. 1 be comprising substrate 1, anode 2, luminescent layer 3, negative electrode 4 organic illuminating element schematic diagram.In such structure In, the compound represented by the chemical formula 1 can be included in the luminescent layer.
Fig. 2 is to include substrate 1, anode 2, hole injection layer 5, hole transmission layer 6, luminescent layer 7, electron transfer layer 8 and the moon The schematic diagram of the organic illuminating element of pole 4.In such a configuration, the compound represented by the chemical formula 1 can be included in institute State in one or more layers in hole injection layer, hole transmission layer, luminescent layer and electron transfer layer.
The organic illuminating element of the present invention is included by the chemical formula 1 except one or more layers in the organic material layer Outside the compound of expression, it can be manufactured using material as known in the art and method.Moreover, the organic illuminating element During comprising multiple organic material layers, the organic material layer can be formed with identical or different material.
For example, the organic illuminating element of the present invention can be by by first electrode, organic material layer and second electrode successively layer It is pressed on substrate to manufacture.Now, sputtering method (sputtering) or e-beam evaporation (e-beam are utilized ) etc. evaporation physical vaporous deposition (physical Vapor Deposition PVD) on substrate deposited metal or Conductive metal oxide or their alloy, to form anode, formed on anode comprising hole injection layer, hole After the organic material layer of transport layer, luminescent layer and electron transfer layer, deposition can be as the material of negative electrode on organic material layer. In addition to such method, it can also be made by being sequentially depositing on substrate cathode material, organic material layer, anode material Into organic illuminating element.
In addition, when manufacturing organic illuminating element, not only solution coating process can also be passed through by vacuum deposition method The compound represented by the chemical formula 1 is formed as into organic material layer.The solution coating process refer to spin coating, dip-coating, blade coating, Ink jet printing, silk-screen printing, spraying, roller coat etc., but not limited to this.
, can by being sequentially depositing cathode material, organic material layer, anode material on substrate in addition to described method To manufacture organic illuminating element (WO 2003/012890).But manufacture method not limited to this.
In an example, the first electrode is anode, and the second electrode is negative electrode, or the first electrode is Negative electrode, the second electrode are anode.
The anode material is generally preferably using the big material of work function, so that hole being capable of successfully injection organic material Layer.The instantiation of the anode material includes metal or their alloys such as vanadium, chromium, copper, zinc, gold;Zinc oxide, indium oxide, The metal oxides such as tin indium oxide (ITO), indium zinc oxide (IZO);ZnO:Al or SNO2:The combination of the metals such as Sb and oxide Thing;The conduction such as poly- (3 methyl thiophene), poly- [3,4- (epoxides of ethylidene -1,2- two) thiophene] (PEDOT), polypyrrole and polyaniline Property polymer, but not limited to this.
The cathode material is generally preferably using the small material of work function, so that electronics is easy to injection organic material layer.Institute State cathode material instantiation include the metal such as magnesium, calcium, sodium, potassium, titanium, indium, yttrium, lithium, gadolinium, aluminium, silver, tin and lead or they Alloy;LiF/Al or LiO2Sandwich such as/Al etc., but not limited to this.
The hole injection layer is preferably used with following ability from the layer in electrode injection hole, hole-injecting material Compound:Can transporting holes, so as to the hole of anode injection effect and to luminescent layer or luminescent material with excellent Different hole injection effect, and prevent that caused exciton moves to electron injecting layer or electron injection material in luminescent layer, also has There is excellent film Forming ability.The HOMO (highest occupied molecular orbital(HOMO)) of hole-injecting material is preferably between the work(of anode material Between the HOMO of function and surrounding organic material layer.The instantiation of hole-injecting material include metalloporphyrin (porphyrin), Oligopoly thiophene, arylamine class organic material, the azepine Benzophenanthrene organic material of six nitrile six, quinacridone (quinacridone) class have Machine material, (perylene) class organic material, anthraquinone and polyaniline and polythiophene class electric conductive polymer etc., but be not limited to This.
The hole transmission layer is to receive hole and by the layer of hole transport to luminescent layer from hole injection layer, as hole Transmission material is adapted to use following material:Hole can be received from anode or hole injection layer and be transferred to luminescent layer, and to sky Cave has high mobility.Instantiation includes arylamine class organic material, electric conductive polymer and conjugate moiety and non-simultaneously be present Block copolymer of conjugate moiety etc., but not limited to this.
The luminescent material be can receive hole respectively from hole transmission layer and electron transfer layer and electronics make its with reference to and The material of the light of visible region is sent, the luminescent material, which preferably uses, has favourable quantum efficiency to fluorescence or phosphorescence Material.Instantiation includes 8-hydroxyquinoline aluminium complex (Alq3);Carbazole compound;Two polystyrene (dimerized Styryl) compound;BAlq;10- hydroxy benzos quinoline-metallic compound;Benzoxazole, benzothiazole and benzimidazole Compound;Poly- compound of being birdsed of the same feather flock together (to phenylene vinylidene);Loop coil (spiro) compound;Polyfluorene, lycid alkene etc., but not limited to this.
The luminescent layer can include material of main part and dopant material.Material of main part includes fused aromatic rings derivative or containing miscellaneous Cycle compound etc..Specifically, fused aromatic rings derivative includes anthracene derivant, pyrene derivatives, naphthalene derivatives, pentacene (pentacene) derivative, phenanthrene compound, fluoranthene compound etc., nitrogen-containing heterocgcies include carbazole derivates, dibenzofurans Derivative, ladder type (ladder-type) furan compound, pyrimidine derivatives etc., but not limited to this.
Dopant material includes aromatic amine derivative, styrylamine compound, boron complex, fluoranthene compound, metal network Compound etc..Specifically, aromatic amine derivative is fused aromatic rings derivative and bag with substituted or unsubstituted arylamino Containing the pyrene with arylamino, anthracene,Two indeno pyrenes (peryflanthene) etc., styrylamine compound is for substitution or not Substitution has the compound of at least one aryl vinyl on substituted arylamine, and is selected from aryl, silicyl, alkyl, ring One or more substituent in alkyl and arylamino is substituted or unsubstituted.Specifically, styrylamine compound Comprising styrylamine, styrene diamines, styrene triamine, styrene tetramine etc., but not limited to this.In addition, metal complex bag Containing iridium complex, platinum complex etc., but not limited to this.It can be used by following chemistry preferably as the dopant material The compound that formula 2 represents.
[chemical formula 2]
In the chemical formula 2,
R8To R15It is separately hydrogen, halogen, substituted or unsubstituted C1-20Alkyl, substituted or unsubstituted C3-10Ring Alkyl, substituted or unsubstituted C3-30AIkylsilyl groups, substituted or unsubstituted C8-30Arylsilyl groups, substitution do not take The C in generation1-20Alkoxy, substituted or unsubstituted C6-20Aralkyl or substituted or unsubstituted C6-10Aryl,
Ar1To Ar4It is separately substituted or unsubstituted C6-30Aryl, but the Ar1To Ar4In at least one difference Independently by C1-20Alkyl, cyano group, halogen, nitro or carbonyl substitution.
Preferably, R8To R15Middle R9And R13It is separately substituted or unsubstituted C1-20Alkyl, remaining is hydrogen.It is more excellent Selection of land, R8To R15Middle R9And R13For isopropyl, remaining is hydrogen.
Preferably, Ar1To Ar4For by C1-20Alkyl or the phenyl of cyano group substitution.It is highly preferred that Ar1And Ar3For by C1-20Alkane The phenyl of base substitution, Ar2And Ar4For the phenyl substituted by cyano group.
The representative example of the compound represented by the chemical formula 2 is as follows:
The electron transfer layer is to receive electronics and by the layer of electric transmission to luminescent layer from electron injecting layer, as electronics Transmission material is adapted to use following material:Electronics can be received from negative electrode and be transferred to luminescent layer, and there is high migrate to electronics Rate.Instantiation includes 8-hydroxyquinoline aluminium complex;Containing Alq3Complex compound;Organic free radical compound;Flavonol-metal Complex compound etc., but not limited to this.As used in the prior art, electron transfer layer can be together with required arbitrary cathode material Use.Specifically, the example of suitable cathode material is that work function is small and conventional material with aluminium lamination or silver layer.It is specific and Speech, cathode material includes caesium, barium, calcium, ytterbium and samarium, in each case with aluminium lamination or silver layer.
The electron injecting layer is preferably used with following ability from the layer of electrode injection electronics, electron injection material Compound:Electronics can be transmitted, so as to the electronic injection effect from negative electrode and to luminescent layer or luminescent material With excellent electron injection effect, and prevent that caused exciton is migrated to hole injection layer, also with excellent in luminescent layer Film Forming ability.Specifically, electron injection material includes Fluorenone (fluorenone), anthraquinone and bismethane (anthraquinodimethane), phenoquinone (diphenoquinone), thiopyrandioxide, oxazole, oxadiazoles, Triazole, imidazoles, tetrabasic carboxylic acid, fluorenylidene-methane, anthrone etc. and its derivative, metal complex and nitrogenous 5 membered ring derivatives etc., But not limited to this.
The metal complex includes 8-hydroxyquinoline lithium, double (8-hydroxyquinoline) zinc, double (8-hydroxyquinoline) copper, double It is (8-hydroxyquinoline) manganese, three (8-hydroxyquinoline) aluminium, three (2- methyl -8-hydroxyquinoline) aluminium, three (8-hydroxyquinoline) galliums, double (10- hydroxy benzos [h] quinoline) beryllium, double (10- hydroxy benzos [h] quinoline) zinc, double (2- methyl -8- quinoline) chloro galliums, double (2- Methyl -8- quinoline) (orthoresol) gallium, double (2- methyl -8- quinoline) (1- naphthols) aluminium, double (2- methyl -8- quinoline) (beta naphthals) Gallium etc., but not limited to this.
Organic illuminating element material used in of the present invention can be top emission type, bottom emission type, two-sided Light emitting-type.
In addition, for the compound represented by the chemical formula 1, in addition to organic illuminating element, it has been further included in Machine solar cell or organic transistor.
The compound that is represented by the chemical formula 1 and the organic light emission member for including it are will be described in the following embodiments The preparation of part.However, following embodiments are only intended to the example present invention, the scope of the present invention is not limited to following embodiments.
Embodiment 1 (E1)
By the compound (10.0g, 23.8mmol) represented by the chemical formula A and the chemical combination represented by the chemical formula B After thing (12.7g, 47.6mmol) is dissolved completely in THF (100mL), add in 50mL water dissolved with potassium carbonate (9.9g, Solution 71.4mmol).After adding tetra-triphenylphosphine palladium (825mg, 0.71mmol), heating stirring 8 hours.Cool the temperature to After normal temperature terminates reaction, filter out solution of potassium carbonate and obtain white solid.The white solid THF and ethyl acetate that will be filtrated to get It is respectively washed the compound (13.4g, yield 89%) for, being prepared for being represented twice by the chemical formula E1.
MS[M+H]+=631
Embodiment 2 (E2)
In addition to each initial feed is identical with the reaction equation, it is prepared for by method same as Example 1 by institute State the compound of chemical formula E2 expressions.
MS[M+H]+=783
Embodiment 3 (E3)
In addition to each initial feed is identical with the reaction equation, it is prepared for by method same as Example 1 by institute State the compound of chemical formula E3 expressions.
MS[M+H]+=783
Embodiment 4 (E4)
In addition to each initial feed is identical with the reaction equation, it is prepared for by method same as Example 1 by institute State the compound of chemical formula E4 expressions.
MS[M+H]+=721
Embodiment 5 (E5)
In addition to each initial feed is identical with the reaction equation, it is prepared for by method same as Example 1 by institute State the compound of chemical formula E5 expressions.
MS[M+H]+=781
Embodiment 6 (E6)
In addition to each initial feed is identical with the reaction equation, it is prepared for by method same as Example 1 by institute State the compound of chemical formula E6 expressions.
MS[M+H]+=799
Embodiment 7 (E7)
In addition to each initial feed is identical with the reaction equation, it is prepared for by method same as Example 1 by institute State the compound of chemical formula E7 expressions.
MS[M+H]+=729
Embodiment 8 (E8)
In addition to each initial feed is identical with the reaction equation, it is prepared for by method same as Example 1 by institute State the compound of chemical formula E8 expressions.
MS[M+H]+=783
Embodiment 9 (E9)
In addition to each initial feed is identical with the reaction equation, it is prepared for by method same as Example 1 by institute State the compound of chemical formula E9 expressions.
MS[M+H]+=781
Embodiment 10 (E10)
In addition to each initial feed is identical with the reaction equation, it is prepared for by method same as Example 1 by institute State the compound of chemical formula E10 expressions.
MS[M+H]+=539
Embodiment 11 (E11)
In addition to each initial feed is identical with the reaction equation, it is prepared for by method same as Example 1 by institute State the compound of chemical formula E11 expressions.
MS[M+H]+=693
Embodiment 12 (E12)
In addition to each initial feed is identical with the reaction equation, it is prepared for by method same as Example 1 by institute State the compound of chemical formula E12 expressions.
MS[M+H]+=693
Embodiment 13 (E13)
In addition to each initial feed is identical with the reaction equation, it is prepared for by method same as Example 1 by institute State the compound of chemical formula E13 expressions.
MS[M+H]+=625
Experimental example 1
Being coated with thickness isThe glass substrate of ITO (tin indium oxide) film be placed in dissolved with cleaning agent It is cleaned by ultrasonic in distilled water.Now, the product of Fischer companies has been used as cleaning agent, has been used as distilled water The distilled water filtered twice by the filter (Filter) produced by Millipore companies.ITO is cleaned 30 minutes Afterwards, ultrasonic cleaning is repeated twice with distilled water, cleaned 10 minutes.After having been cleaned with distilled water, then with isopropanol, acetone, methanol Solvent is cleaned by ultrasonic and dried, and is then transferred to plasma cleaner.The substrate is cleaned using oxygen plasma 5 minutes Afterwards, then by substrate it is transferred to vacuum deposition apparatus.
On the ito transparent electrode so prepared, deposit HI-A compounds by thermal vacuum is to form thickness Hole injection layer.On the hole injection layer, pass through the following HAT compounds of vacuum moulding machine successivelyAnd following HT- A compoundsForm hole transmission layer.
Then, on the hole transport layer, by with 25:1 weight BH compounds more following than vacuum moulding machine and BDization Compound is to form film thicknessLuminescent layer.
On the light-emitting layer, by with 1:Compound E1 of 1 weight than vacuum moulding machine embodiment 1 and following LiQ chemical combination Thing is to form thicknessElectron injection and transport layer.In the electron injection and transport layer, by being sequentially depositing Thickness isLithium fluoride (LiF) and thickness beAluminium form negative electrode.
During described, the sedimentation rate of organic material is keptExtremelyNegative electrode Lithium fluoride sedimentation rate is keptAl deposition speed is keptAnd deposit when vacuum keep 1 × 10-7To 5 × 10-5Torr, organic illuminating element is thus manufactured.
Experimental example 2 to 13
Except replace embodiment 1 compound E1 using embodiment 2 to 13 compound E2 to E13 in addition to, by with institute State the identical method of experimental example 1 and manufacture organic illuminating element.
Contrast experiment's example 1 to 12
Except replace embodiment 1 compound E1 use following compound ET-A to ET-L in addition to, by with the experiment The identical method of example 1 has manufactured organic illuminating element.
To the organic illuminating element that is manufactured in the experimental example and contrast experiment's example in 10mA/cm2Current density under survey Determine driving voltage and luminous efficiency, and in 20mA/cm2Current density under determine and reach 90% relative to original intensity Time (T90), the results are shown in table 1 below and table 2.
【Table 1】
【Table 2】
From upper table 1 it has been confirmed that the compound represented by chemical formula 1 of the present invention can be used for the energy of organic illuminating element Enough organic material layers for carrying out electron injection and electric transmission simultaneously.
In addition, contrast experiment's example 1,2,3 and 6 of the experimental example of upper table 1 and upper table 2 is contrasted it has been confirmed that such as this The chemical formula 1 of invention substitutes the compound for having two substituents of identical to have with substitution on dibenzofurans or dibenzothiophenes The compound phase ratio of different substituents, it is obvious excellent in terms of the driving voltage of organic illuminating element, efficiency and life-span.
In addition, contrast experiment's example 5 of the experimental example of upper table 1 and upper table 2 is contrasted it has been confirmed that with being passed with electronics The situation of the bad substituent of Movement Capabilities such as pyridine is compared, and the performance of organic illuminating element is improved.
In addition, contrast experiment's example 4,7 to 12 of the experimental example of upper table 1 and upper table 2 is contrasted it has been confirmed that such as this hair Bright chemical formula 1 in dibenzofurans and dibenzothiophenes skeleton on the phenyl of side substitution have the compound of identical substituent with Substitution has the compound phase ratio of identical substituent, driving voltage, efficiency and the life-span aspect of organic illuminating element on different phenyl It is obvious excellent.
Symbol description
1:Substrate 2:Anode
3:Luminescent layer 4:Negative electrode
5:Hole injection layer 6:Hole transmission layer
7:Luminescent layer 8:Electron transfer layer

Claims (10)

  1. A kind of 1. compound represented by formula 1 below:
    [chemical formula 1]
    In the chemical formula 1,
    X is O or S,
    R1To R4In at least two be identical-L-Ar, remaining is hydrogen,
    L is singly-bound;Substituted or unsubstituted C6-60Arlydene;Or it is substituted or unsubstituted include O, N, Si and S in one or The C of multiple atoms2-60Heteroarylidene,
    Ar is substituted or unsubstituted C6-60Aryl;Or substituted or unsubstituted include one or more of O, N, Si and S original The C of son2-60Heteroaryl,
    But Ar is not pyridine radicals.
  2. 2. compound according to claim 1, wherein,
    R1To R4In two be identical-L-Ar, remaining is hydrogen.
  3. 3. compound according to claim 1, wherein,
    L is singly-bound or any one selected from following group,
  4. 4. compound according to claim 1, wherein,
    L is 1,3- phenylenes, 1,4- phenylenes or biphenyl -4,4 '-diyl.
  5. 5. compound according to claim 1, wherein,
    Ar is any one selected from following group,
    In the chemical formula,
    X1、X2And X3It is separately CH or N,
    X4And X5It is separately S, O or NH,
    X6And X7It is separately CH or N,
    X8To X10In it is at least one be N, remaining is CH,
    R1To R7It is separately hydrogen, C6-60Aryl or the C for including one or more of O, N, Si and S atom2-60Heteroaryl Base.
  6. 6. compound according to claim 1, wherein,
    Ar is any one selected from following group,
  7. 7. compound according to claim 1, wherein,
    The compound represented by the chemical formula 1 is any compound selected from following group,
  8. 8. a kind of organic illuminating element, it is included:First electrode;The second electrode relative with the first electrode;And institute State one or more layers organic material layer between first electrode and the second electrode, one layer or more in the organic material layer Layer includes the compound any one of claim 1 to 7.
  9. 9. organic illuminating element according to claim 8, wherein,
    Organic material layer comprising the compound is electron injecting layer;Electron transfer layer;Or electron injection and electricity are carried out simultaneously The layer of son transmission.
  10. 10. organic illuminating element according to claim 8, wherein,
    The organic illuminating element includes luminescent layer, and the luminescent layer includes the change represented by formula 2 below as dopant Compound,
    [chemical formula 2]
    In the chemical formula 2,
    R8To R15It is separately hydrogen, halogen, substituted or unsubstitutedC1-20Alkyl, substituted or unsubstituted C3-10Cycloalkyl, Substituted or unsubstituted C3-30AIkylsilyl groups, substituted or unsubstituted C8-30It is arylsilyl groups, substituted or unsubstituted C1-20Alkoxy, substituted or unsubstituted C6-20Aralkyl or substituted or unsubstituted C6-10Aryl,
    Ar1To Ar4It is separately substituted or unsubstituted C6-30Aryl, but the Ar1To Ar4In it is at least one independently Ground is by C1-20Alkyl, cyano group, halogen, nitro or carbonyl substitution.
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