WO2012099376A2 - 신규한 화합물 및 이를 포함하는 유기 발광 소자 - Google Patents
신규한 화합물 및 이를 포함하는 유기 발광 소자 Download PDFInfo
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Definitions
- the present invention relates to a novel compound that can greatly improve the lifespan, efficiency, electrochemical stability and thermal stability of the organic light emitting device and to an organic light emitting device comprising the same.
- the organic light emitting phenomenon is an example of converting an electric current into visible light by an internal process of a specific organic molecule.
- the principle of the organic light emitting phenomenon is as follows. When the organic material layer is positioned between the anode and the cathode, a voltage is applied between the two electrodes, and electrons and holes are injected into the organic material layer from the cathode and the anode, respectively. Electrons and holes injected into the organic material layer recombine to form excitons, and the excitons fall back to the ground to shine.
- An organic light emitting device using this principle may be generally composed of an organic material layer including a cathode and an anode and an organic material layer disposed therebetween, such as a hole injection layer, a hole transport layer, a light emitting layer, and an electron transport layer.
- the materials used in the organic light emitting device are pure organic materials or complex compounds in which organic materials and metals are complexed, and according to the purpose, hole injection materials, hole transport materials, light emitting materials, electron transport materials, electron injection materials, etc. It can be divided into.
- the hole injection material or the hole transport material an organic material having a p-type property, that is, an organic material which is easily oxidized and has an electrochemically stable state during oxidation, is mainly used.
- the electron injecting material or the electron transporting material an organic material having an n-type property, that is, an organic material which is easily reduced and has an electrochemically stable state at the time of reduction is mainly used.
- the light emitting layer material a material having a p-type property and an n-type property at the same time, that is, a material having a stable form in both oxidation and reduction states, and a material having high luminous efficiency that converts it to light when excitons are formed desirable.
- the material used in the organic light emitting device additionally have the following properties.
- the material used in the organic light emitting device is preferably excellent in thermal stability. This is because joule heating occurs due to the movement of charges in the organic light emitting diode.
- NPB which is mainly used as a hole transporting material, has a glass transition temperature of 100 ° C. or less, and thus, it is difficult to use in an organic light emitting device requiring high current.
- the material used for the organic light emitting device should have an appropriate band gap and HOMO or LUMO energy level.
- PEDOT PSS, which is currently used as a hole transporting material in organic light emitting devices manufactured by the solution coating method, has a low LUMO energy level compared to the LUMO energy level of the organic material used as the light emitting layer material. There is difficulty.
- the material used in the organic light emitting device should be excellent in chemical stability, charge mobility, interface characteristics between the electrode and the adjacent layer. That is, the material used in the organic light emitting device should be less deformation of the material by moisture or oxygen. In addition, by having an appropriate hole or electron mobility it should be able to maximize the exciton formation by balancing the density of holes and electrons in the light emitting layer of the organic light emitting device. In addition, for the stability of the device should be able to improve the interface with the electrode containing a metal or metal oxide.
- the present inventors can satisfy the conditions required for the materials that can be used in the organic light emitting device, such as appropriate energy level, electrochemical stability and thermal stability, and the chemistry that can play various roles required in the organic light emitting device depending on the substituent. It is an object of the present invention to provide a novel compound having a structure and an organic light emitting device including the same.
- the present invention provides a compound represented by the following formula (1).
- Ar 1 to Ar 3 are the same as or different from each other, and each independently hydrogen;
- An alkyl group unsubstituted or substituted with one or more substituents selected from the group consisting of a halogen group, an alkyl group, an alkenyl group, an alkoxy group, a cycloalkyl group, an aryl group, an arylalkyl group, an aryl alkenyl group, a heterocyclic group, a nitrile group and an acetylene group
- An alkoxy group unsubstituted or substituted with one or more substituents selected from the group consisting of a halogen group, an alkyl group, an alkenyl group, an alkoxy group, a cycloalkyl group, an aryl group, an arylalkyl group, an aryl alkenyl group, a heterocyclic group, a nitrile group and an acetylene group
- At least one of Ar 2 and Ar 3 is an amine group unsubstituted or substituted with an aryl group, a heterocyclic group or a fluorenyl group; Or an aryl group substituted with an amine group unsubstituted or substituted with an aryl group, heterocyclic group or fluorenyl group, which may be further substituted with an aryl group, fluorene group or arylamine group,
- R 1 , R 2 and R 3 are the same as or different from each other, and each independently hydrogen; Halogen group; Alkyl groups; Alkenyl groups; An alkoxy group; Aryl group; Heterocyclic group; And it is selected from the group consisting of an amine group unsubstituted or substituted with an alkyl group, an aryl group or a heterocyclic group,
- p is an integer of 1-5
- q is an integer of 1 or 2
- r is an integer of 1-4.
- the present invention is an organic light emitting device comprising a first electrode, a second electrode, and at least one organic layer disposed between the first electrode and the second electrode, at least one of the organic layer is represented by the formula (1) Provided is an organic light emitting device comprising the compound.
- the novel compound according to the present invention can be used as an organic material layer material of an organic light emitting device.
- the driving voltage of the device may be lowered, the light efficiency may be improved, and the life characteristics of the device may be improved by thermal stability of the compound.
- FIG. 1 shows an example of an organic light emitting element composed of a substrate 1, an anode 2, a light emitting layer 3, and a cathode 4. As shown in FIG.
- the novel compound according to the present invention is characterized by represented by the formula (1).
- halogen group examples include fluorine, chlorine, bromine and iodine, but are not limited thereto.
- the alkyl group may be linear or branched, and the number of carbon atoms is not particularly limited, but is preferably 1-6. Specific examples thereof include methyl group, ethyl group, propyl group, isopropyl group, butyl group, t-butyl group, pentyl group and hexyl group, but are not limited thereto.
- the alkenyl group may be linear or branched, and the carbon number is not particularly limited, but is preferably 2 to 6, but is not limited thereto.
- the cycloalkyl group does not give a steric hindrance of 3 to 12 carbon atoms.
- Specific examples include a cyclopentyl group and a cyclohexyl group, but are not limited thereto.
- the alkoxy group preferably has 1 to 6 carbon atoms, more specifically methoxy, ethoxy, isopropyloxy, and the like, but is not limited thereto.
- the aryl group may be monocyclic or polycyclic, and the carbon number is not particularly limited, but is preferably 6-20.
- Examples of the monocyclic aryl group include phenyl group, biphenyl group, terphenyl group, stilbene and the like, and examples of the polycyclic aryl group include naphthyl group, anthracenyl group, phenanthrenyl group, pyrenyl group, peryleneyl group, and cryo But may be mentioned, but is not limited thereto.
- the heterocyclic group is a ring group containing O, N, S, or P as a hetero atom, and the carbon number is not particularly limited, but is preferably 2 to 20 carbon atoms.
- the heterocyclic group include a carbazole group, a thiophene group, a furan group, a pyrrole group, an imidazole group, a thiazole group, an oxazole group, an oxadiazole group, a triazole group, a pyridyl group, a pyridazine group, a quinolinyl group, and an isoquinoli And a nitrile group and an acridil group, and compounds such as the following structural formulas are preferred, but are not limited thereto.
- the amine group preferably has 1 to 30 carbon atoms, and more specifically methylamine group, dimethylamine group, ethylamine group, diethylamine group, phenylamine group, naphthylamine group, biphenylamine group, anthracenylamine group , 3-methyl-phenylamine group, 4-methyl-naphthylamine group, 2-methyl-biphenylamine group, 9-methyl-anthracenylamine group, diphenylamine group, phenylnaphthyl amine group, ditolylamine Group, a phenyltolylamine group, a triphenylamine group, etc. are mentioned, but it is not limited to this.
- the compound represented by Chemical Formula 1 may be a compound represented by Chemical Formulas 2 to 5 below.
- Ar 4 , Ar 7 , Ar 10 and Ar 14 are each independently hydrogen;
- An alkyl group unsubstituted or substituted with one or more substituents selected from the group consisting of a halogen group, an alkyl group, an alkenyl group, an alkoxy group, a cycloalkyl group, an aryl group, an arylalkyl group, an aryl alkenyl group, a heterocyclic group, a nitrile group and an acetylene group
- An alkoxy group unsubstituted or substituted with one or more substituents selected from the group consisting of a halogen group, an alkyl group, an alkenyl group, an alkoxy group, a cycloalkyl group, an aryl group, an arylalkyl group, an aryl alkenyl group, a heterocyclic group, a nitrile group and an acetylene group
- Ar 5 , Ar 6 , Ar 8 , Ar 9 , Ar 11 , Ar 12 , Ar 13 , Ar 15 , Ar 16 , and Ar 17 are each independently a substituted or unsubstituted aryl group, a substituted or unsubstituted heterocyclic group Or a substituted or unsubstituted fluorenyl group,
- L 1 , L 2 , L 3 and L 5 are direct bonds, arylene groups or fluorenylene groups,
- L 4 and L 6 are an arylene group.
- substituted or unsubstituted is deuterium, halogen, alkyl, alkenyl, alkoxy, silyl, arylalkenyl, aryl, heterocyclic, carbazole, arylamine, alkyl Or an aryl group which is unsubstituted or substituted with one or more substituents selected from the group consisting of a fluorenyl group and a nitrile group or does not have any substituent.
- Substituents which may be further substituted with Ar 1 to Ar 17 of Formulas 1 to 5 may include a halogen group, an alkyl group, an alkenyl group, an alkoxy group, a silyl group, an aryl alkenyl group, an aryl group, a heterocyclic group, a carbazole group, and an aryl.
- a fluorenyl group or a nitrile group unsubstituted or substituted with an amine group, an alkyl group or an aryl group may be mentioned, but is not limited thereto.
- Ar 1 in Formula 1 may be hydrogen or a phenyl group.
- At least one of Ar 2 and Ar 3 in Formula 1 is substituted with a phenyl group, a biphenyl group, a terphenyl group, a phenyl group substituted with a fluorenyl group, a naphthyl group, a fluorenyl group substituted with an alkyl group, a dibenzothiophenyl group or a phenanthrenyl group Or an unsubstituted amine group.
- At least one of Ar 2 and Ar 3 in Formula 1 is substituted with a phenyl group, a biphenyl group, a terphenyl group, a phenyl group substituted with a fluorenyl group, a naphthyl group, a fluorenyl group substituted with an alkyl group, a dibenzothiophenyl group or a phenanthrenyl group Or a phenyl group substituted with an unsubstituted amine group;
- At least one of Ar 2 and Ar 3 is a phenyl group, a biphenyl group, a terphenyl group, a phenyl group substituted with a fluorenyl group, a naphthyl group, a fluorenyl group substituted with an alkyl group, a dibenzothiophenyl group or a phenanthrenyl group
- At least one of Ar 2 and Ar 3 in Formula 1 may be a substituent.
- At least one of the above general formula (1) is at least one of Ar 2 and Ar 3
- Ar 2 and Ar 3 is a fluorenyl group substituted with a phenyl group, a naphthyl group, an alkyl group substituted with a phenyl group, biphenyl group, terphenyl group, fluorenyl An amine group unsubstituted or substituted with a dibenzothiophenyl group or a phenanthrenyl group;
- At least one of Ar 2 and Ar 3 is unsubstituted or substituted with a phenyl group, biphenyl group, terphenyl group, phenyl group substituted with fluorenyl group, naphthyl group, alkyl group substituted fluorenyl group, dibenzothiophenyl group or phenanthrenyl group
- At least one of Ar 2 and Ar 3 is unsubstituted or
- Ar 4 , Ar 7 , Ar 10, and Ar 14 may be hydrogen or a phenyl group.
- Ar 5 , Ar 6 , Ar 8 , Ar 9 , Ar 11 , Ar 12 , Ar 13 , Ar 15 , Ar 16 , and Ar 17 are each independently a phenyl group, a biphenyl group, a terphenyl group, and fluorine. Phenyl group, naphthyl group, fluorenyl group, dibenzothiophenyl group or phenanthrenyl group substituted with an alkyl group.
- L 1 , L 2 , L 3, and L 5 may be each independently a direct bond, a phenylene group, a biphenylene group, a naphthylene group, or a fluorenylene group.
- L 1 , L 2 , L 3, and L 5 may be each independently a direct bond, a phenylene group, a biphenylene group, or a fluorenylene group.
- L 4 and L 6 may be each independently a phenylene group, a biphenylene group, a terphenylene group or a naphthylene group.
- L 4 and L 6 may each independently be a biphenylene group or a terphenylene group.
- the compound represented by Formula 2 or 4 may be prepared according to Scheme 1 below, and the compound represented by Formula 3 or 5 may be prepared according to Scheme 2 below.
- Preferred specific examples of the compound represented by Formula 1 include the following compounds, but are not limited thereto.
- Preferred specific examples of the compound represented by Formula 1 include the following compounds, but are not limited thereto.
- the compound represented by Formula 1 is preferably applied to the hole transport layer of the organic material layer of the organic light emitting device, but is not limited thereto.
- the compound represented by Formula 1 has a high glass transition temperature (Tg) is excellent in thermal stability. This increase in thermal stability is an important factor in providing drive stability to the device.
- the organic light emitting device is an organic light emitting device including a first electrode, a second electrode, and one or more organic material layers disposed between the first electrode and the second electrode, one or more of the organic material layer It is characterized by including a compound represented by the formula (1).
- the organic light emitting device of the present invention may be manufactured by a conventional method and material for manufacturing an organic light emitting device, except that at least one organic material layer is formed using the above-described compounds.
- the compound of Chemical Formula 1 may be formed as an organic material layer by a solution coating method as well as a vacuum deposition method in manufacturing an organic light emitting device.
- the solution coating method means spin coating, dip coating, inkjet printing, screen printing, spraying method, roll coating and the like, but is not limited thereto.
- the organic material layer of the organic light emitting device of the present invention may have a single layer structure, but may have a multilayer structure in which two or more organic material layers are stacked.
- the organic light emitting device of the present invention may have a structure including a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer and the like as an organic material layer.
- the structure of the organic light emitting device is not limited thereto and may include a smaller number of organic material layers.
- the organic material layer may include at least one layer of a hole injection layer, a hole transport layer, and a layer for simultaneously injecting holes and transporting holes, wherein at least one of the layers is represented by Formula 1 It may include a compound.
- the organic material layer may include a light emitting layer, and the light emitting layer may include a compound represented by Chemical Formula 1.
- the organic material layer may include a hole transport layer
- the hole transport layer may include a compound represented by the formula (1).
- the organic material layer may include one or more layers of an electron transport layer, an electron injection layer, and a layer for simultaneously transporting and transporting electrons, and one or more of the layers may include a compound represented by Formula 1 above. have.
- the compound of Formula 1 may be included in a light emitting layer, a layer for simultaneously injecting / holes transporting and emitting light, a layer for simultaneously transporting holes and emitting light, or a layer for simultaneously transporting electrons and emitting light.
- the structure of the organic light emitting device of the present invention may have a structure as shown in FIG. 1, but is not limited thereto.
- FIG. 1 illustrates a structure of an organic light emitting device in which an anode 2, a light emitting layer 3, and a cathode 4 are sequentially stacked on a substrate 1.
- the compound represented by Formula 1 may be included in the light emitting layer (3).
- the organic light emitting device uses a metal vapor deposition (PVD) method such as sputtering or e-beam evaporation, and has a metal oxide or a metal oxide or an alloy thereof on a substrate. It can be prepared by depositing an anode to form an anode, an organic material layer including a hole injection layer, a hole transport layer, a light emitting layer and an electron transport layer thereon, and then depositing a material that can be used as a cathode thereon.
- PVD metal vapor deposition
- an organic light emitting device may be manufactured by sequentially depositing a cathode material, an organic material layer, and an anode material on a substrate.
- the organic layer may have a multilayer structure including a hole injection layer, a hole transport layer, a light emitting layer, and an electron transport layer, but is not limited thereto and may have a single layer structure.
- the organic material layer may be formed by using a variety of polymer materials, and by using a method such as spin coating, dip coating, doctor blading, screen printing, inkjet printing, or thermal transfer method, rather than a deposition method. It can be prepared in layers.
- the anode material a material having a large work function is usually preferred to facilitate hole injection into the organic material layer.
- the positive electrode material that can be used in the present invention include metals such as vanadium, chromium, copper, zinc, gold or alloys thereof; Metal oxides such as zinc oxide, indium oxide, indium tin oxide (ITO), indium zinc oxide (IZO); A combination of a metal and an oxide such as ZnO: Al or SnO 2 : Sb; Conductive polymers such as poly (3-methyl compound), poly [3,4- (ethylene-1,2-dioxy) compound] (PEDT), polypyrrole and polyaniline, and the like, but are not limited thereto.
- the cathode material is a material having a small work function to facilitate electron injection into the organic material layer.
- the negative electrode material include metals such as magnesium, calcium, sodium, potassium, titanium, indium, yttrium, lithium, gadolinium, aluminum, silver, tin, and lead or alloys thereof; Multilayer structure materials such as LiF / Al or LiO 2 / Al, and the like, but are not limited thereto.
- the hole injection material is a material capable of well injecting holes from the anode at a low voltage, and the highest occupied molecular orbital (HOMO) of the hole injection material is preferably between the work function of the anode material and the HOMO of the surrounding organic material layer.
- the hole injection material include metal porphyrine, oligothiophene, arylamine-based organics, hexanitrile hexaazatriphenylene-based organics, quinacridone-based organics, and perylene-based Organic compounds, anthraquinones and polyaniline and poly-compounds of conductive polymers, and the like, but are not limited thereto.
- the hole transporting material a material capable of transporting holes from the anode or the hole injection layer to be transferred to the light emitting layer is suitable.
- a material capable of transporting holes from the anode or the hole injection layer to be transferred to the light emitting layer is suitable.
- Specific examples thereof include an arylamine-based organic material, a conductive polymer, and a block copolymer having a conjugated portion and a non-conjugated portion together, but are not limited thereto.
- the light emitting material is a material capable of emitting light in the visible region by transporting and combining holes and electrons from the hole transport layer and the electron transport layer, respectively, and a material having good quantum efficiency with respect to fluorescence or phosphorescence is preferable.
- Specific examples thereof include 8-hydroxyquinoline aluminum complex (Alq 3 ); Carbazole series compounds; Dimerized styryl compounds; BAlq; 10-hydroxybenzoquinoline-metal compound; Benzoxazole, benzthiazole and benzimidazole series compounds; Poly (p-phenylenevinylene) (PPV) -based polymers; Spiro compounds; Polyfluorene, rubrene and the like, but are not limited thereto.
- the electron transporting material is a material capable of injecting electrons well from the cathode and transferring the electrons to the light emitting layer.
- a material having high mobility to electrons is suitable. Specific examples include Al complexes of 8-hydroxyquinoline; Complexes including Alq 3 ; Organic radical compounds; Hydroxyflavone-metal complexes and the like, but are not limited thereto.
- the organic light emitting device according to the present invention may be a top emission type, a bottom emission type or a double-sided emission type depending on the material used.
- a glass substrate (corning 7059 glass) coated with ITO (indium tin oxide) at a thickness of 800 mm was placed in distilled water in which detergent was dissolved and ultrasonically cleaned. At this time, Fischer Co. was used as a detergent and Millipore Co. was used as distilled water. Secondly filtered distilled water was used as a filter of the product. After washing ITO for 30 minutes, ultrasonic washing was performed twice with distilled water for 10 minutes. After the distilled water was washed, ultrasonic washing with a solvent such as isopropyl alcohol, acetone, methanol and the like was dried and then transferred to a plasma cleaner. In addition, the substrate was dry-cleaned for 5 minutes using oxygen plasma, and the substrate was transferred to a vacuum evaporator.
- ITO indium tin oxide
- HAT hexanitrile hexaazatriphenylene
- NPB was deposited to a thickness of 850 kPa on the thin film to form a hole transport layer
- a compound of Formula 1-3 was deposited to a thickness of 350 kPa to form a hole transport and electron blocking layer thereon.
- the CBP doped with Ir (ppy) 3 10% by weight to form a light emitting layer having a thickness of 250 ⁇ .
- BCP was formed on the hole blocking layer having a thickness of 50 kPa, and then the electron transport layer material of the following chemical formula was deposited to a thickness of 300 kPa to form an electron transport layer.
- the cathode was formed by sequentially depositing 12 ⁇ thick lithium fluoride (LiF) and 2000 ⁇ thick aluminum on the electron transport layer.
- the deposition rate of the organic material was maintained at 0.3 ⁇ 0.8 ⁇ / sec.
- the lithium fluoride of the negative electrode maintained a deposition rate of 0.3 kPa / sec and aluminum of 1.5 to 2.5 kPa / sec.
- the degree of vacuum was maintained at 1 to 3 ⁇ 10 ⁇ 7 .
- the fabricated device showed an electric field of 5.75 V at a forward current density of 10 mA / cm 2 , and a spectrum showing a current efficiency of 58.8 cd / A was observed. As such, the device exhibiting the current efficiency indicates that the compound of Formula 1-3 plays an electron blocking role together with the hole transport.
- Example 1 Except for replacing the compound of Formula 1-3 used as a hole transport and electron blocking layer in Example 1 with a compound of Formula 1-4 was prepared the same device.
- the fabricated device showed an electric field of 5.51 V at a forward current density of 10 mA / cm 2 , and a spectrum showing a current efficiency of 58.2 cd / A was observed.
- Example 1 Except for replacing the compound of Compound 1-3, used as a hole transport and electron blocking layer in Example 1 with a compound of Formula 1-7 was prepared the same device.
- the fabricated device showed an electric field of 5.71 V at a forward current density of 10 mA / cm 2 , and a spectrum showing a current efficiency of 59.1 cd / A was observed.
- Example 1 Except for replacing the compound of Formula 1-3 used as a hole transport and electron blocking layer in Example 1 with a compound of Formula 1-8 was prepared the same device.
- the fabricated device showed an electric field of 5.54 V at a forward current density of 10 mA / cm 2 , and a spectrum showing a current efficiency of 57.9 cd / A was observed.
- the manufactured device showed an electric field of 5.41 V at a forward current density of 10 mA / cm 2 , and a spectrum showing a current efficiency of 50.8 cd / A was observed.
- the device In the case of the device manufactured using the compound represented by the formula (1) of the present invention, it can be seen that the device exhibits high current efficiency, because the compound of the formula (1) plays an electron blocking role together with the hole transport in the device.
Abstract
Description
Claims (18)
- 하기 화학식 1로 표시되는 화합물:[화학식 1]상기 화학식 1에서,Ar1 내지 Ar3은 서로 동일하거나 상이하고, 각각 독립적으로 수소; 할로겐기, 알킬기, 알케닐기, 알콕시기, 시클로알킬기, 아릴기, 아릴알킬기, 아릴알케닐기, 헤테로고리기, 니트릴기 및 아세틸렌기로 이루어진 군에서 선택된 1개 이상의 치환기로 치환 또는 비치환된 알킬기; 할로겐기, 알킬기, 알케닐기, 알콕시기, 시클로알킬기, 아릴기, 아릴알킬기, 아릴알케닐기, 헤테로고리기, 니트릴기 및 아세틸렌기로 이루어진 군에서 선택된 1개 이상의 치환기로 치환 또는 비치환된 알콕시기; 할로겐기, 알킬기, 알케닐기 알콕시기, 시클로알킬기, 아릴기, 아릴알킬기, 아릴알케닐기, 헤테로고리기, 니트릴기, 아세틸렌기 및 아릴아민기로 이루어진 군에서 선택된 1개 이상의 치환기로 치환 또는 비치환된 아릴기; 할로겐기, 알킬기, 알케닐기, 알콕시기, 시클로알킬기, 아릴기, 아릴알킬기, 아릴알케닐기, 헤테로고리기, 니트릴기 및 아세틸렌기로 이루어진 군에서 선택된 1개 이상의 치환기로 치환 또는 비치환된 헤테로고리기; 및 알킬기, 알케닐기, 아릴기, 아릴알킬기, 아릴알케닐기 및 헤테로고리기로 이루어진 군에서 선택된 1개 이상의 치환기로 치환 또는 비치환된 아민기로 이루어진 군에서 선택되고,Ar2 및 Ar3 중 적어도 하나는 아릴기, 헤테로고리기 또는 플루오레닐기로 치환 또는 비치환된 아민기; 또는 아릴기, 헤테로고리기 또는 플루오레닐기로 치환 또는 비치환된 아민기로 치환된 아릴기이고, 이는 추가로 아릴기, 플루오렌기 또는 아릴아민기로 치환될 수 있고,R1, R2 및 R3는 서로 동일하거나 상이하고, 각각 독립적으로 수소; 할로겐기; 알킬기; 알케닐기; 알콕시기; 아릴기; 헤테로고리기; 및 알킬기, 아릴기 또는 헤테로고리기로 치환 또는 비치환된 아민기로 이루어진 군에서 선택되고,p는 1 내지 5의 정수이고, q는 1 또는 2의 정수이며, r은 1 내지 4의 정수이다.
- 청구항 1에서, 상기 화학식 1은 하기 화학식 2 내지 5로 표시되는 것을 특징으로 하는 화합물:[화학식 2][화학식 3][화학식 4][화학식 5]상기 화학식 2 내지 5에서,Ar4, Ar7, Ar10 및 Ar14는 각각 독립적으로 수소; 할로겐기, 알킬기, 알케닐기, 알콕시기, 시클로알킬기, 아릴기, 아릴알킬기, 아릴알케닐기, 헤테로고리기, 니트릴기 및 아세틸렌기로 이루어진 군에서 선택된 1개 이상의 치환기로 치환 또는 비치환된 알킬기; 할로겐기, 알킬기, 알케닐기, 알콕시기, 시클로알킬기, 아릴기, 아릴알킬기, 아릴알케닐기, 헤테로고리기, 니트릴기 및 아세틸렌기로 이루어진 군에서 선택된 1개 이상의 치환기로 치환 또는 비치환된 알콕시기; 할로겐기, 알킬기, 알케닐기, 알콕시기, 시클로알킬기, 아릴기, 아릴알킬기, 아릴알케닐기, 헤테로고리기, 니트릴기, 아세틸렌기 및 아릴아민기로 이루어진 군에서 선택된 1개 이상의 치환기로 치환 또는 비치환된 아릴기; 할로겐기, 알킬기, 알케닐기, 알콕시기, 시클로알킬기, 아릴기, 아릴알킬기, 아릴알케닐기, 헤테로고리기, 니트릴기 및 아세틸렌기로 이루어진 군에서 선택된 1개 이상의 치환기로 치환 또는 비치환된 헤테로고리기; 및 알킬기, 알케닐기, 아릴기, 아릴알킬기, 아릴알케닐기 및 헤테로고리기로 이루어진 군에서 선택된 1개 이상의 치환기로 치환 또는 비치환된 아민기로 이루어진 군에서 선택되고,Ar5, Ar6, Ar8, Ar9, Ar11, Ar12, Ar13, Ar15, Ar16, 및 Ar17은 각각 독립적으로 치환 또는 비치환된 아릴기, 치환 또는 비치환된 헤테로고리기 또는 치환 또는 비치환된 플루오레닐기이며,L1, L2, L3 및 L5는 직접결합, 아릴렌기 또는 플루오레닐렌기이고,L4 및 L6은 아릴렌기이다.
- 청구항 1에 있어서, 상기 화학식 1의 Ar1은 수소 또는 페닐기인 것을 특징으로 하는 화합물.
- 청구항 1에 있어서, 상기 화학식 1의 Ar2 및 Ar3 중 적어도 하나는 페닐기, 바이페닐기, 터페닐기, 플루오레닐기로 치환된 페닐기, 나프틸기, 알킬기로 치환된 플루오레닐기, 디벤조티오페닐기 또는 페난트레닐기로 치환 또는 비치환된 아민기인 것을 특징으로 하는 화합물.
- 청구항 1에 있어서, 상기 화학식 1의 Ar2 및 Ar3 중 적어도 하나는 페닐기, 바이페닐기, 터페닐기, 플루오레닐기로 치환된 페닐기, 나프틸기, 알킬기로 치환된 플루오레닐기, 디벤조티오페닐기 또는 페난트레닐기로 치환 또는 비치환된 아민기로 치환된 페닐기; 페닐기, 바이페닐기, 터페닐기, 플루오레닐기로 치환된 페닐기, 나프틸기, 알킬기로 치환된 플루오레닐기, 디벤조티오페닐기 또는 페난트레닐기로 치환 또는 비치환된 아민기로 치환된 바이페닐기; 페닐기, 바이페닐기, 터페닐기, 플루오레닐기로 치환된 페닐기, 나프틸기, 알킬기로 치환된 플루오레닐기, 디벤조티오페닐기 또는 페난트레닐기로 치환 또는 비치환된 아민기로 치환된 플루오레닐기; 또는 페닐기, 바이페닐기, 터페닐기, 플루오레닐기로 치환된 페닐기, 나프틸기, 알킬기로 치환된 플루오레닐기, 디벤조티오페닐기 또는 페난트레닐기로 치환 또는 비치환된 아민기로 치환된 나프틸기인 것을 특징으로 하는 화합물.
- 청구항 2에 있어서, 상기 화학식 2 내지 5의 Ar4, Ar7, Ar10 및 Ar14는 수소 또는 페닐기인 것을 특징으로 하는 화합물.
- 청구항 2에 있어서, 상기 화학식 2 내지 5의 Ar5, Ar6, Ar8, Ar9, Ar11, Ar12, Ar13, Ar15, Ar16, 및 Ar17은 각각 독립적으로 페닐기, 바이페닐기, 터페닐기, 플루오레닐기로 치환된 페닐기, 나프틸기, 알킬기로 치환된 플루오레닐기, 디벤조티오페닐기 또는 페난트레닐기인 것을 특징으로 하는 화합물.
- 청구항 2에 있어서, 상기 화학식 2 내지 5의 L1, L2, L3 및 L5는 각각 독립적으로 직접결합, 페닐렌기, 바이페닐렌기, 나프틸렌기, 플루오레닐렌기인 것을 특징으로 하는 화합물.
- 청구항 2에 있어서, 상기 화학식 2 내지 5의 L4 및 L6은 각각 독립적으로 바이페닐렌기 또는 터페닐렌기인 것을 특징으로 하는 화합물.
- 제1 전극, 제2 전극, 및 상기 제1 전극과 제2 전극 사이에 배치된 1층 이상의 유기물층을 포함하는 유기 발광 소자로서, 상기 유기물층 중 1층 이상은 청구항 1 내지 청구항 12 중 어느 한 항의 화합물을 포함하는 것을 특징으로 하는 유기 발광 소자.
- 청구항 13에 있어서, 상기 유기물층은 정공 주입층, 정공 수송층, 및 정공 주입 및 정공 수송을 동시에 하는 층 중 1층 이상을 포함하고, 상기 층들 중 1층 이상이 화학식 1로 표시되는 화합물을 포함하는 것을 특징으로 하는 유기 발광 소자.
- 청구항 13에 있어서, 상기 유기물층은 발광층을 포함하고, 상기 발광층이 화학식 1로 표시되는 화합물을 포함하는 것을 특징으로 하는 유기 발광 소자.
- 청구항 13에 있어서, 상기 유기물층은 정공수송층을 포함하고, 상기 정공수송층이 화학식 1로 표시되는 화합물을 포함하는 것을 특징으로 하는 유기 발광 소자.
- 청구항 13에 있어서, 상기 유기물층은 전자 수송층, 전자 주입층, 및 전자 수송 및 전자 주입을 동시에 하는 층 중 1층 이상을 포함하고, 상기 층들 중 1층 이상이 화학식 1로 표시되는 화합물을 포함하는 것을 특징으로 하는 유기 발광 소자.
- 청구항 13에 있어서, 상기 유기 발광 소자는 전면 발광형, 후면 발광형 또는 양면 발광형인 것을 특징으로 하는 유기 발광 소자.
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Also Published As
Publication number | Publication date |
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WO2012099376A3 (ko) | 2012-11-29 |
JP5703394B2 (ja) | 2015-04-15 |
JP2014511352A (ja) | 2014-05-15 |
CN103403125B (zh) | 2016-03-23 |
US9065060B2 (en) | 2015-06-23 |
US20130334517A1 (en) | 2013-12-19 |
KR20120083245A (ko) | 2012-07-25 |
CN103403125A (zh) | 2013-11-20 |
KR101380009B1 (ko) | 2014-04-02 |
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