WO2016190600A1 - 유기전기 소자용 화합물, 이를 이용한 유기전기소자 및 그 전자 장치 - Google Patents
유기전기 소자용 화합물, 이를 이용한 유기전기소자 및 그 전자 장치 Download PDFInfo
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- WO2016190600A1 WO2016190600A1 PCT/KR2016/005273 KR2016005273W WO2016190600A1 WO 2016190600 A1 WO2016190600 A1 WO 2016190600A1 KR 2016005273 W KR2016005273 W KR 2016005273W WO 2016190600 A1 WO2016190600 A1 WO 2016190600A1
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- SMWMJZDOZXMQOZ-UHFFFAOYSA-N c1ccc2[o]c(c(cc3)c(cc4)cc3-c3cc(N(c5c(cccc6)c6ccc5)c5c(cccc6)c6ccc5)cc(-c5cc6ccccc6cc5)c3)c4c2c1 Chemical compound c1ccc2[o]c(c(cc3)c(cc4)cc3-c3cc(N(c5c(cccc6)c6ccc5)c5c(cccc6)c6ccc5)cc(-c5cc6ccccc6cc5)c3)c4c2c1 SMWMJZDOZXMQOZ-UHFFFAOYSA-N 0.000 description 1
- AYWBPTNBXULDKT-UHFFFAOYSA-N c1ccc2[o]c3c(-c(cc4)ccc4N(c(cc4)ccc4-c4c(cccc5)c5ccc4)c4cc(cccc5)c5cc4)c(cccc4)c4cc3c2c1 Chemical compound c1ccc2[o]c3c(-c(cc4)ccc4N(c(cc4)ccc4-c4c(cccc5)c5ccc4)c4cc(cccc5)c5cc4)c(cccc4)c4cc3c2c1 AYWBPTNBXULDKT-UHFFFAOYSA-N 0.000 description 1
- XOBUYXUXXLZKFN-UHFFFAOYSA-N c1ccc2[o]c3cc(cc(cc4)-c(cc5)ccc5N(c(cc5)ccc5-c5cc6ccccc6cc5)c(cc5)ccc5-c5cc(cccc6)c6cc5)c4cc3c2c1 Chemical compound c1ccc2[o]c3cc(cc(cc4)-c(cc5)ccc5N(c(cc5)ccc5-c5cc6ccccc6cc5)c(cc5)ccc5-c5cc(cccc6)c6cc5)c4cc3c2c1 XOBUYXUXXLZKFN-UHFFFAOYSA-N 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 229940125898 compound 5 Drugs 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 125000004987 dibenzofuryl group Chemical group C1(=CC=CC=2OC3=C(C21)C=CC=C3)* 0.000 description 1
- 238000004821 distillation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 239000011737 fluorine Substances 0.000 description 1
- 125000001153 fluoro group Chemical group F* 0.000 description 1
- 125000005843 halogen group Chemical group 0.000 description 1
- 125000005549 heteroarylene group Chemical group 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- 125000004435 hydrogen atom Chemical group [H]* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910052740 iodine Inorganic materials 0.000 description 1
- OCVXZQOKBHXGRU-UHFFFAOYSA-N iodine(1+) Chemical compound [I+] OCVXZQOKBHXGRU-UHFFFAOYSA-N 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- BKXVGDZNDSIUAI-UHFFFAOYSA-N methoxy(triphenyl)silane Chemical compound C=1C=CC=CC=1[Si](C=1C=CC=CC=1)(OC)C1=CC=CC=C1 BKXVGDZNDSIUAI-UHFFFAOYSA-N 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 238000010295 mobile communication Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 125000002560 nitrile group Chemical group 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 238000005424 photoluminescence Methods 0.000 description 1
- 238000005240 physical vapour deposition Methods 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 125000005576 pyrimidinylene group Chemical group 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000007650 screen-printing Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000010345 tape casting Methods 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 239000010409 thin film Substances 0.000 description 1
- PQDJYEQOELDLCP-UHFFFAOYSA-N trimethylsilane Chemical group C[SiH](C)C PQDJYEQOELDLCP-UHFFFAOYSA-N 0.000 description 1
- 125000005580 triphenylene group Chemical group 0.000 description 1
Images
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Definitions
- the present invention relates to a compound for an organic electric device, an organic electric device using the same, and an electronic device thereof.
- organic light emitting phenomenon refers to a phenomenon of converting electrical energy into light energy using an organic material.
- An organic electric element using an organic light emitting phenomenon usually has a structure including an anode, a cathode, and an organic material layer therebetween.
- the organic material layer is often formed of a multi-layered structure composed of different materials in order to increase the efficiency and stability of the organic electric device, for example, it may be made of a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer and an electron injection layer.
- the material used as the organic material layer in the organic electric element may be classified into a light emitting material and a charge transport material such as a hole injection material, a hole transport material, an electron transport material, an electron injection material and the like according to a function.
- Efficiency, lifespan, and driving voltage are related to each other, and as efficiency increases, the driving voltage decreases relatively, and as the driving voltage decreases, crystallization of organic materials due to Joule heating generated during driving decreases. It shows a tendency to increase the life. However, simply improving the organic material layer does not maximize the efficiency. This is because a long life and high efficiency can be achieved at the same time when an optimal combination of energy level, T1 value, and intrinsic properties (mobility, interfacial properties, etc.) of each organic material layer is achieved.
- a light emitting auxiliary layer (multiple hole transport layer) must exist between the hole transport layer and the light emitting layer. It is time to develop a light emitting auxiliary layer.
- electrons are transferred from the electron transport layer to the light emitting layer and holes are transferred from the hole transport layer to the light emitting layer to form an exciton by recombination of electrons and holes in the light emitting layer.
- the material used in the hole transport layer has a low TMO value because it has to have a low HOMO value, which causes the exciton generated in the light emitting layer to pass to the hole transport layer, resulting in charge unbalance in the light emitting layer. This causes light emission at the hole transport layer interface.
- the color purity and efficiency of the organic electric element is reduced and the life is shortened. Therefore, it must be a material having a HOMO energy level between the HOMO energy level of the hole transport layer and the HOMO energy level of the light emitting layer, has a high T1 value, and has a hole mobility within an appropriate driving voltage range (in a blue device driving voltage range of a full device).
- a light emitting auxiliary layer material having hole mobility.
- the OLED device is mainly formed by a deposition method, which requires development of a material that can withstand a long time during deposition, that is, a material having strong heat resistance.
- materials forming the organic material layer in the device such as a hole injection material, a hole transport material, a light emitting material, an electron transport material, an electron injection material, a light emitting auxiliary layer material, etc., are stable and efficient. Supported by materials must be preceded, and development of materials for the light emitting auxiliary layer and the hole transport layer is urgently required.
- the present invention has been proposed to solve the above-mentioned problems, and provides a compound having an efficient electron blocking ability and hole transporting ability, and at the same time using the compound, high luminous efficiency, low driving voltage, high heat resistance of the device It is an object of the present invention to provide a compound capable of improving color purity and lifetime, an organic electric element using the same, and an electronic device thereof.
- the present invention provides a compound represented by the following formula.
- the following formula represents a compound having dibenzofuran in which the aromatic ring is further fused to a tertiary amine.
- the present invention provides an organic electronic device using the compound represented by Formula 1 and an electronic device thereof.
- the present invention by using a specific compound having a substituent which increases the planarity of the molecule as a material of the organic electric device, hole transporting capacity and thermal stability is improved, and HOMO energy level and high T1 which is easy to balance charge in the light emitting layer are achieved. It is possible to improve the luminous efficiency, heat resistance, lifespan, and the like of the organic electroluminescent element and to lower the driving voltage.
- FIG. 1 is an exemplary view of an organic electroluminescent device according to the present invention.
- first, second, A, B, (a), and (b) can be used. These terms are only for distinguishing the components from other components, and the nature, order or order of the components are not limited by the terms. If a component is described as being “connected”, “coupled” or “connected” to another component, that component may be directly connected to or connected to that other component, but there may be another configuration between each component. It is to be understood that the elements may be “connected”, “coupled” or “connected”.
- a component such as a layer, film, region, plate, etc.
- it is not only when the other component is “on top of” but also another component in between. It is to be understood that this may also include cases.
- a component is said to be “directly above” another part, it should be understood to mean that there is no other part in the middle.
- halo or halogen as used herein is fluorine (F), bromine (Br), chlorine (Cl) or iodine (I) unless otherwise indicated.
- alkyl or “alkyl group” has a single bond of 1 to 60 carbon atoms, unless otherwise indicated, and is a straight chain alkyl group, branched chain alkyl group, cycloalkyl (alicyclic) group, alkyl-substituted cyclo Radicals of saturated aliphatic functional groups, including alkyl groups, cycloalkyl-substituted alkyl groups.
- alkenyl group or “alkynyl group”, unless stated otherwise, has a double or triple bond of 2 to 60 carbon atoms, and includes a straight or branched chain group, and is not limited thereto. It is not.
- cycloalkyl refers to alkyl forming a ring having 3 to 60 carbon atoms, without being limited thereto.
- alkoxyl group means an alkyl group to which an oxygen radical is attached, and unless otherwise specified, has a carbon number of 1 to 60, and is limited herein. It is not.
- aryloxyl group or “aryloxy group” means an aryl group to which an oxygen radical is attached, and unless otherwise specified, has a carbon number of 6 to 60, but is not limited thereto.
- fluorenyl group or “fluorenylene group” means a monovalent or divalent functional group in which R, R 'and R “are all hydrogen in the following structures, unless otherwise stated, and" Substituted fluorenyl group “or” substituted fluorenylene group “means that at least one of the substituents R, R ', and R" is a substituent other than hydrogen, and R and R' are bonded to each other to form a carbon It includes the case of forming a compound by spying together.
- aryl group and “arylene group” have a carbon number of 6 to 60 unless otherwise stated, but is not limited thereto.
- the aryl group or arylene group includes monocyclic, ring aggregate, conjugated ring system, spiro compound and the like.
- heterocyclic group includes not only aromatic rings, such as “heteroaryl groups” or “heteroarylene groups,” but also non-aromatic rings, and each carbon number includes one or more heteroatoms unless otherwise specified. It means a ring of 2 to 60, but is not limited thereto.
- heteroatom refers to N, O, S, P or Si unless otherwise indicated, and heterocyclic groups are monocyclic, ring aggregates, conjugated multiple ring systems, spies, including heteroatoms. Means a compound or the like.
- Heterocyclic groups may also include rings comprising SO 2 in place of the carbon forming the ring.
- a “heterocyclic group” includes the following compounds.
- ring includes monocyclic and polycyclic rings, includes hydrocarbon rings as well as heterocycles including at least one heteroatom, and includes aromatic and nonaromatic rings.
- polycyclic includes ring assemblies, fused multiple ring systems and spiro compounds, such as biphenyl, terphenyl, and the like, including aromatics as well as nonaromatics, hydrocarbons
- the ring as well includes heterocycles comprising at least one heteroatom.
- ring assemblies means that two or more ring systems (single or conjugated ring systems) are directly connected to each other through a single bond or a double bond and directly between such rings. It means that the number of linkages is one less than the total number of ring systems in this compound. Ring aggregates may have the same or different ring systems directly connected to each other via a single bond or a double bond.
- conjugated multiple ring systems refers to a covalently fused ring form of at least two atoms, including a ring system in which two or more hydrocarbons are fused together and at least one heteroatom. And heterocyclic systems having at least one conjugated form. These conjugated several ring systems can be aromatic rings, heteroaromatic rings, aliphatic rings or combinations of these rings.
- spiro compound has a "spiro union", and a spiro linkage means a linkage formed by two rings sharing one atom only.
- atoms shared by the two rings are called spiro atoms, and according to the number of spiro atoms in a compound, they are respectively referred to as 'monospyro-', 'diespyro-' and 'trispyro-' It is called a compound.
- an arylalkoxy group means an alkoxy group substituted with an aryl group
- an alkoxycarbonyl group means a carbonyl group substituted with an alkoxy group
- an alkenyl group substituted with an arylcarbonyl group is used herein.
- the arylcarbonyl group is a carbonyl group substituted with an aryl group.
- substituted in the term “substituted or unsubstituted” refers to deuterium, halogen, amino groups, nitrile groups, nitro groups, C 1 -C 20 alkyl groups, C 1 -C 20 alkoxy group, C 1 -C 20 alkylamine group, C 1 -C 20 alkylthiophene group, C 6 -C 20 arylthiophene group, C 2 -C 20 alkenyl group, C 2 -C 20 alkynyl, C 3 -C 20 cycloalkyl group of, C 6 -C 20 aryl group, of a C 6 -C 20 aryl group substituted with a heavy hydrogen, C 8 -C 20 aryl alkenyl group, a silane group, a boron Substituted by at least one substituent selected from the group consisting of a group, a germanium group, and a C 2 -C
- the group name corresponding to the aryl group, arylene group, heterocyclic group, etc. exemplified in each symbol and examples of the substituents in this specification may describe 'the name of the group reflecting the singer', but is described as 'the parent compound name'. You may. For example, in the case of 'phenanthrene', an aryl group, the monovalent 'group' is 'phenanthryl' or 'phenanthreneyl' and the divalent group is divided into singers such as 'phenanthrene' or 'phenanthreneylene'.
- the name of the group may be described, but may be described as the parent compound name 'phenanthrene' regardless of the valence.
- the substituent R 1 when a is an integer of 0, the substituent R 1 is absent, when a is an integer of 1, one substituent R 1 is bonded to any one of carbons forming the benzene ring, and a is an integer of 2 or 3 are each bonded as follows, where R 1 may be the same or different from each other, and when a is an integer from 4 to 6, it is bonded to the carbon of the benzene ring in a similar manner, while the indication of hydrogen bonded to the carbon forming the benzene ring Is omitted.
- FIG. 1 is an exemplary view of an organic electric device according to an embodiment of the present invention.
- an organic electric device 100 may include a first electrode 120, a second electrode 180, and a first electrode 120 formed on a substrate 110.
- An organic material layer including the compound according to the present invention is provided between the two electrodes 180.
- the first electrode 120 may be an anode (anode)
- the second electrode 180 may be a cathode (cathode)
- the first electrode may be a cathode and the second electrode may be an anode.
- the organic layer may include a hole injection layer 130, a hole transport layer 140, a light emitting layer 150, an electron transport layer 160, and an electron injection layer 170 on the first electrode 120 in sequence.
- at least one of these layers may be omitted, or may further include a hole blocking layer, an electron blocking layer, a light emitting auxiliary layer 151, a buffer layer 141, an electron transport auxiliary layer, or the like. It may also serve as a hole blocking layer.
- the organic electronic device further includes a protective layer or a light efficiency improving layer formed on one surface of the at least one surface of the first electrode and the second electrode opposite to the organic material layer. can do.
- Compound according to an embodiment of the present invention applied to the organic layer is a hole injection layer 130, a hole transport layer 140, an electron transport layer 160, an electron transport auxiliary layer, an electron injection layer 170, a light emitting layer 150 It can be used as a material of a host or a dopant or a light efficiency improving layer.
- the compound of the present invention may be used as the light emitting layer 150, hole transport layer 140 and / or light emitting auxiliary layer 151 material, preferably the hole transport layer 140 and / or light emitting auxiliary layer 151 material Can be used as
- a light emitting auxiliary layer is formed between the hole transport layer and the light emitting layer, and in each light emitting layer (R, G, B), Therefore, it is necessary to develop different light emitting auxiliary layers.
- the light emitting auxiliary layer it is difficult to infer the characteristics of the organic material layer used even if a similar core is used, since the correlation between the hole transport layer and the light emitting layer (host) must be understood.
- the hole transport layer and / or the light emitting auxiliary layer are formed using the compound represented by Formula 1 to optimize the energy level and T 1 value between the organic material layers, the intrinsic properties (mobility, interfacial properties, etc.) of the organic materials, and the like. Therefore, the life and efficiency of the organic electric element can be improved at the same time.
- the organic electroluminescent device may be manufactured using various deposition methods. It may be manufactured using a deposition method such as PVD or CVD.
- the anode 120 is formed by depositing a metal or conductive metal oxide or an alloy thereof on a substrate, and the hole injection layer 130 thereon.
- the organic material layer including a hole transport layer 140, a light emitting layer 150, an electron transport layer 160 and an electron injection layer 170 By forming an organic material layer including a hole transport layer 140, a light emitting layer 150, an electron transport layer 160 and an electron injection layer 170, and then depositing a material that can be used as the cathode 180 thereon have.
- the light emitting auxiliary layer 151 may be further formed between the hole transport layer 140 and the light emitting layer 150
- an electron transport auxiliary layer may be further formed between the light emitting layer 150 and the electron transport layer 160.
- the organic material layer is a solution or solvent process (e.g., spin coating process, nozzle printing process, inkjet printing process, slot coating process, dip coating process, roll-to-roll process, doctor blading) using various polymer materials. It can be produced in fewer layers by methods such as ding process, screen printing process, or thermal transfer method. Since the organic material layer according to the present invention may be formed in various ways, the scope of the present invention is not limited by the forming method.
- the organic electric element according to an embodiment of the present invention may be a top emission type, a bottom emission type or a double-sided emission type according to the material used.
- WOLED White Organic Light Emitting Device
- Various structures for white organic light emitting devices mainly used as backlight devices have been proposed and patented. Representatively, a side-by-side method in which R (Red), G (Green), and B (Blue) light emitting parts are mutually planarized, and a stacking method in which R, G, and B light emitting layers are stacked up and down. And a color conversion material (CCM) method using photo-luminescence of an inorganic phosphor by using electroluminescence by a blue (B) organic light emitting layer and light therefrom. May also be applied to these WOLEDs.
- CCM color conversion material
- the organic electroluminescent device may be one of an organic electroluminescent device, an organic solar cell, an organic photosensitive member, an organic transistor, a monochromatic or white illumination device.
- Another embodiment of the present invention may include a display device including the organic electric element of the present invention described above, and an electronic device including a control unit for controlling the display device.
- the electronic device may be a current or future wired or wireless communication terminal, and includes all electronic devices such as a mobile communication terminal such as a mobile phone, a PDA, an electronic dictionary, a PMP, a remote controller, a navigation device, a game machine, various TVs, and various computers.
- Ring A and ring B are independently of each other, an aryl group of C 6 -C 10 ;
- the ring A may be substituted with at least one R 1
- the ring B may be substituted with at least one R 2
- Ring A and ring B may be excluded when the C 6 aryl group.
- ring A and ring B may independently be an aryl group of C 6 or C 10 , more preferably phenyl or naphthyl, except at the same time phenyl.
- R 1 and R 2 independently of each other deuterium; Tritium; halogen; Cyano group; Nitro group; C 6 -C 60 aryl group; Fluorenyl group; C 2 -C 60 heterocyclic group including at least one heteroatom selected from the group consisting of O, N, S, Si and P; A fused ring group of an aliphatic ring of C 3 -C 60 and an aromatic ring of C 6 -C 60 ; An alkyl group of C 1 -C 50 ; Alkenyl groups of C 2 -C 20 ; An alkynyl group of C 2 -C 20 ; An alkoxyl group of C 1 -C 30 ; And an aryloxy group of C 6 -C 30 It can be selected from the group consisting of.
- R 1 and R 2 are an aryl group, fluorenyl group, heterocyclic group, fused ring group, alkyl group, alkenyl group, alkynyl group, alkoxy group and aryloxy group, each of them is deuterium; halogen; A silane group unsubstituted or substituted with a C 1 -C 20 alkyl group or C 6 -C 20 aryl group; Siloxane groups; Boron group; Germanium group; Cyano group; Nitro group; Import alkylthio of C 1 -C 20; An alkoxyl group of C 1 -C 20 ; An alkyl group of C 1 -C 20 ; Alkenyl groups of C 2 -C 20 ; An alkynyl group of C 2 -C 20 ; Aryl group of C 6 -C 20 ; C 6 -C 20 aryl group substituted with deuterium; Fluorenyl group; C 2 -C 20 heterocyclic group including at least
- R 1 and R 2 is an aryl group, preferably an aryl group of C 6 -C 30 , more preferably an aryl group of C 6 -C 10 , and in the case of a heterocyclic group, a hetero ring of C 2 -C 30 Group, more preferably a C 2 -C 13 heterocyclic group, in the case of a fused ring group, preferably a fused ring group of an aliphatic ring of C 3 -C 30 and an aromatic ring of C 6 -C 30 , more preferably Preferably it may be a fused ring group of a C 3 -C 6 aliphatic ring and a C 6 -C 10 aromatic ring, in the case of an alkyl group, preferably an C 1 -C 10 alkyl group, more preferably C 1 -C 4 It may be an alkyl group of, may be preferably an alkenyl group of C 1 -C 10 , more preferably an alkenyl group of C
- R 1 and R 2 may be independently of each other cyano, methyl, tert-butyl, ethenyl, phenyl, naphthyl, benzothienyl, dibenzofuryl, benzoisoquinolyl or benzocyclobutenyl, and the like. Each of which may be further substituted with deuterium.
- L 1 may be an arylene group of C 6 -C 60 .
- the arylene group of L 1 may be preferably an arylene group of C 6 -C 30 , more preferably an arylene group of C 6 -C 16 .
- L 1 may be phenylene, naphthylene, biphenylylene, phenanthryl or a combination thereof, and the like, each of which may be further substituted with deuterium, methyl or naphthyl.
- L 2 and L 3 are each independently a single bond; Or an arylene group of C 6 -C 60 .
- the arylene groups of L 2 and L 3 are deuterium; halogen; A silane group unsubstituted or substituted with a C 1 -C 20 alkyl group or C 6 -C 20 aryl group; Siloxane groups; Boron group; Germanium group; Cyano group; Nitro group; Import alkylthio of C 1 -C 20; An alkoxyl group of C 1 -C 20 ; An alkyl group of C 1 -C 20 ; Alkenyl groups of C 2 -C 20 ; An alkynyl group of C 2 -C 20 ; A cycloalkyl group of C 3 -C 20 ; C 7 -C 20 arylalkyl group; And an arylalkenyl group of C 8 -C 20 It may be further substituted with one or more substituents selected from the group consisting of.
- L 2 and L 3 are an arylene group, it may be preferably an arylene group of C 6 -C 30 , more preferably an arylene group of C 6 -C 10 .
- L 2 and L 3 may be independently a single bond, phenylene or naphthylene, etc., each of which may be further substituted with deuterium.
- Ar 1 and Ar 2 may be independently an aryl group of C 6 -C 60 .
- the aryl groups of Ar 1 and Ar 2 are deuterium; halogen; A silane group unsubstituted or substituted with a C 1 -C 20 alkyl group or C 6 -C 20 aryl group; Siloxane groups; Boron group; Germanium group; Cyano group; Nitro group; Import alkylthio of C 1 -C 20; An alkoxyl group of C 1 -C 20 ; An alkyl group of C 1 -C 20 ; Alkenyl groups of C 2 -C 20 ; An alkynyl group of C 2 -C 20 ; C 6 -C 20 aryl group substituted with deuterium; Fluorenyl group; A cycloalkyl group of C 3 -C 20 ; C 7 -C 20 arylalkyl group; And it may be further substituted with one or more substituents selected from the group consisting of C 8 -C 20 arylalkenyl group, and when these substituents are adjacent to
- the aryl group of Ar 1 and Ar 2 may be preferably an aryl group of C 6 -C 30 , more preferably an aryl group of C 6 -C 18 .
- Ar 1 and Ar 2 may be independently of each other phenyl, naphthyl, biphenyl, phenanthryl, flurantene, triphenylene, etc., each of which is deuterium, fluoro, ethenyl, methoxy, triphenylsilane Or further substituted with trimethylsilane.
- Formula 1 may be represented by one of the following Formula 2 to Formula 9.
- R 1 , R 2 , L 1 to L 3 , Ar 1 and Ar 2 are the same as defined in Formula 1 above.
- m is an integer of 0 to 4
- n is an integer of 0 to 6
- o is an integer of 0 to 3
- p is an integer of 0 to 5
- m, n, o and p is an integer of 2 or more
- the plurality of R 1 and R 2 may be the same or different from each other.
- Formula 1 may be represented by one of the following Formula 10 or Formula 11.
- ring A and ring B are as defined in Formula 1.
- L 1 is a C 6 -C 30 arylene group
- L 2 and L 3 are each independently a single bond
- Ar 2 may be an aryl group of C 6 -C 30 .
- R 3 and R 4 are each independently of deuterium; halogen; A silane group unsubstituted or substituted with a C 1 -C 20 alkyl group or C 6 -C 20 aryl group; Siloxane groups; Boron group; Germanium group; Cyano group; Nitro group; Import alkylthio of C 1 -C 20; An alkoxyl group of C 1 -C 20 ; An alkyl group of C 1 -C 20 ; Alkenyl groups of C 2 -C 20 ; An alkynyl group of C 2 -C 20 ; C 6 -C 20 aryl group substituted with deuterium; Fluorenyl group; A cycloalkyl group of C 3 -C 20 ; C 7 -C 20 arylalkyl group; And an arylalkenyl group of C 8 -C 20 ; q and r are each independently an integer of 0 to 7, and when q and r are integers of 2 or more
- Formula 1 may be one of the following compounds.
- the invention is a first electrode; Second electrode; And an organic material layer formed between the first electrode and the second electrode, wherein the organic material layer includes a hole injection layer, a hole transport layer, a light emitting auxiliary layer, a light emitting layer, an electron transport auxiliary layer, an electron transport layer, and an electron injection layer.
- the organic material layer may include at least one of the compounds. That is, the organic material layer may be formed of one compound alone or a mixture of two or more compounds represented by Chemical Formula 1. Preferably, a single compound or a mixture including two or more compounds represented by Formula 1 may be included in or formed in the hole transport layer and / or the light emitting auxiliary layer.
- Ring A, ring B, L 1 to L 3 , Ar 1 and Ar 2 are the same as defined in the formula (1).
- Sub 1 of Scheme 1 may be synthesized by the reaction route of Scheme 2, but is not limited thereto.
- Hal 1 is Br or I
- the compound belonging to Sub 1 may be the following compound, but is not limited thereto.
- Table 1 shows FD-MS values of compounds belonging to Sub 1.
- Sub 2 of Scheme 1 may be synthesized by the reaction route of Scheme 12, but is not limited thereto.
- the compound belonging to Sub 2 may be the following compound, but is not limited thereto.
- Table 2 shows FD-MS values of compounds belonging to Sub 2.
- Sub 1-3 (5.11 g, 13.69 mmol) obtained in the above synthesis was dissolved in toluene (140 ml) in a round bottom flask, and then Sub 2-22 (5.09 g, 13.69 mmol), Pd 2 (dba) 3 (0.38 g, 0.41 mmol), 50% P ( t -Bu) 3 (0.5ml, 1.10 mmol), NaO t -Bu (3.95 g, 41.07 mmol) was added and stirred at 100 ° C.
- the reaction of Sub 1 and Sub 2-> Final Products in Scheme 1 and the starting material-> Sub 2 reaction in Scheme 12 are all based on the Buchwald-Hartwig cross coupling reaction and the starting material-> Sub 1-I reaction in Scheme 2.
- the Sub 1-II-> Sub 1 reaction in Scheme 2 is based on the Suzuki cross-coupling reaction. The reactions will proceed even if substituents not specifically specified in these are attached.
- Example I-1 Green Organic Light Emitting Diode ( Hole transport layer )
- An organic electroluminescent device was manufactured according to a conventional method using the compound of the present invention as a hole transport layer material.
- 2-TNATA bis(2-naphthyl) amino] triphenylamine
- CBP N'-dicarbazole-biphenyl
- Ir (ppy) 3 tris (2-phenylpyridine) -iridium
- Alq 3 Aluminum (hereinafter abbreviated as "BAlq”) is vacuum deposited to a thickness of 10 nm to form a hole blocking layer, and tris (8-quinolinol) aluminum (hereinafter abbreviated as "Alq 3 ”) on the hole blocking layer. 40 n
- the electron transport layer was formed by vacuum deposition to a thickness of m.
- LiF an alkali metal halide, was deposited to a thickness of 0.2 nm to form an electron injection layer, and then an Al was deposited to a thickness of 150 nm to form a cathode.
- An electroluminescent device was prepared.
- Example I-2 to [ Example I-34] Green Organic Light Emitting Diode ( Hole transport layer )
- An organic electroluminescent device was manufactured in the same manner as in Example I-1, except for using the compounds P-3 to P-48 of the present invention shown in Table 4 below instead of the compound P-1 of the present invention as the hole transport layer material. Produced.
- An organic electroluminescent device was manufactured in the same manner as in Example I-1, except that Comparative Compounds 1 to 8 were used instead of Compound P-1 of the present invention as a hole transport layer material.
- PR- of Photoresearch Co., Ltd. was applied by applying a forward bias DC voltage to the organic electroluminescent devices prepared in Examples I-1 to I-34 and Comparative Examples I-1 to I-8 of the present invention.
- the electroluminescence (EL) characteristics were measured at 650, and the T95 lifetime was measured using a life-time measurement device manufactured by McScience Inc. at a luminance of 5000 cd / m 2 , and the measurement results are shown in Table 4 below.
- the organic electroluminescent device using the compound of the present invention as a material for the hole transport layer exhibits low driving voltage, high luminous efficiency and high lifetime.
- Comparative Compounds 3 to 3 wherein dibenzofuran is substituted for tertiary amines, rather than Comparative Example I-1 and Comparative Example I-2, which use Comparative Compound 2 in which all aryl groups are substituted for NPB and tertiary amines, which are widely used.
- Comparative Examples I-3 to 8 using Compound 8 showed higher results in terms of luminous efficiency, and aromatic rings were further condensed to tertiary amines than Comparative Examples I-3 to I-8 ( Examples I-1 to I-34 using a compound of the present invention having a fused) form of dibenzofuran had lower driving voltages and at the same time exhibited high luminous efficiency and markedly improved lifetime.
- Example II-1 Green Organic Light Emitting Diode ( Luminous auxiliary layer )
- An organic electroluminescent device was manufactured according to a conventional method using the compound of the present invention as a light emitting auxiliary layer material.
- a hole injection layer is formed by vacuum depositing 2-TNATA with a thickness of 60 nm on an ITO layer (anode) formed on a glass substrate.
- the compound 1 is vacuum deposited by a thickness of 60 nm on the hole injection layer.
- the compound P-1 of the present invention was vacuum-deposited on the hole transport layer to a thickness of 20 nm to form a light emitting auxiliary layer, and then, on the light emitting auxiliary layer, CBP was used as a host material, and Ir (ppy) 3 was plated.
- Example II-2 to [ Example II-28] Green Organic Light Emitting Diode ( Luminous auxiliary layer )
- An organic electroluminescent device was manufactured in the same manner as in Example II-1, except that the emission auxiliary layer was not formed.
- An organic electroluminescent device was manufactured in the same manner as in Example II-1, except that Comparative Compounds 3 to 8 were used instead of Compound P-1 of the present invention as a light-emitting auxiliary layer material.
- An organic electroluminescent device was manufactured in the same manner as in Example II-1, except that Comparative Compound 9 was used instead of Comparative Compound 1 as the hole transport layer material.
- An organic electroluminescent device was manufactured in the same manner as in Example II-29, except that an emission auxiliary layer was not formed.
- An organic electroluminescent device was manufactured in the same manner as in Example II-29, except that Comparative Compounds 3 to 8 were used instead of Compound P-1 of the present invention as a light-emitting auxiliary layer material.
- PR- Photoresearch Co., Ltd. was fabricated by applying a forward bias DC voltage to the organic electroluminescent devices of Examples II-1 to II-46 and Comparative Examples II-1 to II-14 of the present invention.
- the electroluminescence (EL) characteristics were measured at 650, and the T95 lifetime was measured using a lifespan measuring instrument manufactured by McScience Inc. at 5000 cd / m 2 reference luminance, and the measurement results are shown in Tables 5 and 6.
- Example III-1 Blue organic electroluminescent device ( Luminous auxiliary layer )
- An organic electroluminescent device was manufactured according to a conventional method using the compound of the present invention as a light emitting auxiliary layer material.
- a hole injection layer is formed by vacuum depositing 2-TNATA with a thickness of 60 nm on an ITO layer (anode) formed on a glass substrate.
- a hole transport layer is formed by vacuum depositing a comparative compound 9 with a thickness of 60 nm on the hole injection layer. Formed.
- compound P-1 of the present invention was vacuum-deposited to a thickness of 20 nm on the hole transport layer to form a light emitting auxiliary layer, and then 9,10-di (naphthalen-2-yl) anthracene on the light emitting auxiliary layer.
- ADN (Hereinafter abbreviated as "ADN"
- BD-052X manufactured by Idemitsu kosan
- BD-052X manufactured by Idemitsu kosan
- a dopant material was doped at a weight ratio of 96: 4 to form a light emitting layer by vacuum deposition to a thickness of 30 nm.
- a hole blocking layer was formed by vacuum depositing BAlq to a thickness of 10 nm on the light emitting layer, and an electron transport layer was formed by vacuum depositing Alq 3 to a thickness of 40 nm on the hole blocking layer.
- LiF which is an alkali metal halide
- Al was deposited to a thickness of 150 nm to form a cathode, thereby manufacturing an organic electroluminescent device.
- Example III-2 to [ Example II-12] Green Organic Light Emitting Diode ( Luminous auxiliary layer )
- An organic electroluminescent device was manufactured in the same manner as in Example III-1, except that the light emitting auxiliary layer was not formed.
- An organic electroluminescent device was manufactured in the same manner as in Example III-1, except that Comparative Compounds 3 to 8 were used instead of Compound P-1 of the present invention as a light-emitting auxiliary layer material.
- PR- Photoresearch Co., Ltd. was fabricated by applying a forward bias DC voltage to the organic electroluminescent devices of Examples III-1 to III-12 and Comparative Examples III-1 to III-7 of the present invention.
- the electroluminescence (EL) characteristics were measured at 650, and the T95 lifetime was measured using a life-time measurement device manufactured by McScience Inc. at a luminance of 500 cd / m 2 , and the measurement results are shown in Table 7 below.
- the organic electroluminescent device using the compound of the present invention as a material of the light emitting auxiliary layer is luminous efficiency compared to the organic electroluminescent devices of Comparative Examples II-1 to III-7. This has been improved and the service life has been significantly improved.
- dibenzofuran in the form of an additional condensed aromatic ring in the tertiary amine is not only a hole transport layer but also a device for the emission auxiliary layer (green phosphorescence, blue fluorescence).
- the compound of the present invention used as a light emitting auxiliary layer material has a deep HOMO energy level and a high T1 value to maintain charge balance in the light emitting layer and to perform an effective electron blocking role. It can be seen that the luminous efficiency and lifespan are improved.
- the evaluation results of the above-described device fabrication described device characteristics in which the compound of the present invention is applied to only one of the hole transport layer and the light emitting auxiliary layer, but the compound of the present invention may be used by applying both the hole transport layer and the light emitting auxiliary layer.
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Abstract
Description
Claims (9)
- 하기 화학식 1로 표시되는 화합물:<화학식 1>상기 화학식 1에서,A환 및 B환은 서로 독립적으로, C6-C10의 아릴기;이며, 상기 A환은 적어도 하나의 R1로 치환될 수 있으며, 상기 B환은 적어도 하나의 R2로 치환될 수 있으며, 이때, A환과 B환이 동시에 C6의 아릴기인 경우는 제외하며,R1 및 R2는 서로 독립적으로 중수소; 삼중수소; 할로겐; 시아노기; 나이트로기; C6-C60의 아릴기; 플루오렌일기; O, N, S, Si 및 P로 이루어진 군에서 선택된 적어도 하나의 헤테로원자를 포함하는 C2-C60의 헤테로고리기; C3-C60의 지방족고리와 C6-C60의 방향족고리의 융합고리기; C1-C50의 알킬기; C2-C20의 알켄일기; C2-C20의 알킨일기; C1-C30의 알콕실기; 및 C6-C30의 아릴옥시기;로 이루어진 군에서 선택되며,L1은 C6-C60의 아릴렌기;이며, L2 및 L3은 서로 독립적으로 단일결합; 또는 C6-C60의 아릴렌기;이며, Ar1 및 Ar2는 서로 독립적으로 C6-C60의 아릴기;이며,상기 R1 및 R2가 아릴기, 플루오렌일기, 헤테로고리기, 융합고리기, 알킬기, 알켄일기, 알킨일기, 알콕시기 및 아릴옥시기인 경우, 이들 각각은 중수소; 할로겐; C1-C20의 알킬기 또는 C6-C20의 아릴기로 치환 또는 비치환된 실란기; 실록산기; 붕소기; 게르마늄기; 시아노기; 니트로기; C1-C20의 알킬싸이오기; C1-C20의 알콕실기; C1-C20의 알킬기; C2-C20의 알켄일기; C2-C20의 알킨일기; C6-C20의 아릴기; 중수소로 치환된 C6-C20의 아릴기; 플루오렌일기; O, N, S, Si 및 P로 이루어진 군에서 선택된 적어도 하나의 헤테로원자를 포함하는 C2-C20의 헤테로고리기; C3-C20의 사이클로알킬기; C7-C20의 아릴알킬기; 및 C8-C20의 아릴알켄일기;로 이루어진 군에서 선택된 하나 이상의 치환기로 더욱 치환될 수 있으며,상기 L1의 아릴렌기는 중수소; 할로겐; C1-C20의 알킬기 또는 C6-C20의 아릴기로 치환 또는 비치환된 실란기; 실록산기; 붕소기; 게르마늄기; 시아노기; 니트로기; C1-C20의 알킬싸이오기; C1-C20의 알콕실기; C1-C20의 알킬기; C2-C20의 알켄일기; C2-C20의 알킨일기; C6-C20의 아릴기; 중수소로 치환된 C6-C20의 아릴기; 플루오렌일기; O, N, S, Si 및 P로 이루어진 군에서 선택된 적어도 하나의 헤테로원자를 포함하는 C2-C20의 헤테로고리기; C3-C20의 사이클로알킬기; C7-C20의 아릴알킬기; 및 C8-C20의 아릴알켄일기;로 이루어진 군에서 선택된 하나 이상의 치환기로 더욱 치환될 수 있으며,상기 L2 및 L3의 아릴렌기는 중수소; 할로겐; C1-C20의 알킬기 또는 C6-C20의 아릴기로 치환 또는 비치환된 실란기; 실록산기; 붕소기; 게르마늄기; 시아노기; 니트로기; C1-C20의 알킬싸이오기; C1-C20의 알콕실기; C1-C20의 알킬기; C2-C20의 알켄일기; C2-C20의 알킨일기; C3-C20의 사이클로알킬기; C7-C20의 아릴알킬기; 및 C8-C20의 아릴알켄일기;로 이루어진 군에서 선택된 하나 이상의 치환기로 더욱 치환될 수 있으며,상기 Ar1 및 Ar2의 아릴기는 중수소; 할로겐; C1-C20의 알킬기 또는 C6-C20의 아릴기로 치환 또는 비치환된 실란기; 실록산기; 붕소기; 게르마늄기; 시아노기; 니트로기; C1-C20의 알킬싸이오기; C1-C20의 알콕실기; C1-C20의 알킬기; C2-C20의 알켄일기; C2-C20의 알킨일기; 중수소로 치환된 C6-C20의 아릴기; 플루오렌일기; C3-C20의 사이클로알킬기; C7-C20의 아릴알킬기; 및 C8-C20의 아릴알켄일기로 이루어진 군에서 선택된 하나 이상의 치환기로 더욱 치환될 수 있으며, 이들 각 치환기가 인접한 경우 이들은 서로 결합하여 고리를 형성할 수 있으며,
- 제 1항에 있어서,상기 화학식 1은 하기 화학식 2 내지 화학식 9 중 하나로 표시되는 것을 특징으로 하는 화합물:<화학식 2> <화학식 3><화학식 4> <화학식 5><화학식 6> <화학식 7><화학식 8> <화학식 9>상기 화학식 2 내지 화학식 9에서, R1, R2, L1 내지 L3, Ar1 및 Ar2는 제 1항에서 정의된 것과 동일하며,m는 0 내지 4의 정수이며, n은 0 내지 6의 정수이며, o는 0 내지 3의 정수이며, p는 0 내지 5의 정수이며, m, n, o 및 p가 2 이상의 정수인 경우 복수의 R1 및 R2는 서로 동일하거나 상이할 수 있다.
- 제 1항에 있어서,상기 화학식 1은 하기 화학식 10 또는 화학식 11 중 하나로 표시되는 것을 특징으로 하는 화합물:<화학식 10> <화학식 11>상기 화학식 10 및 화학식 11에서, A환 및 B환은 제 1항에서 정의된 것과 동일하며,L1은 C6-C30의 아릴렌기;이며, L2 및 L3은 서로 독립적으로 단일결합; 또는 C6-C30의 아릴렌기;이며, Ar2는 C6-C30의 아릴기;이며,R3 및 R4는 서로 독립적으로 중수소; 할로겐; C1-C20의 알킬기 또는 C6-C20의 아릴기로 치환 또는 비치환된 실란기; 실록산기; 붕소기; 게르마늄기; 시아노기; 니트로기; C1-C20의 알킬싸이오기; C1-C20의 알콕실기; C1-C20의 알킬기; C2-C20의 알켄일기; C2-C20의 알킨일기; 중수소로 치환된 C6-C20의 아릴기; 플루오렌일기; C3-C20의 사이클로알킬기; C7-C20의 아릴알킬기; 및 C8-C20의 아릴알켄일기;로 이루어진 군에서 선택되며, q 및 r은 서로 독립적으로 0 내지 7의 정수이며, q 및 r이 2 이상의 정수인 경우 복수의 R3 및 R4는 서로 동일하거나 상이할 수 있다.
- 제 1전극; 제 2전극; 및 상기 제 1전극과 제 2전극 사이에 위치하는 유기물층;을 포함하는 유기전기소자에 있어서,상기 유기물층은 제 1항의 화합물을 함유하는 것을 특징으로 하는 유기전기소자.
- 제 5항에 있어서,상기 화합물은 상기 유기물층의 정공주입층, 정공수송층, 발광보조층, 발광층, 전자수송보조층, 전자수송층 및 전자주입층 중 적어도 하나의 층에 포함되며, 상기 화합물은 1종 단독 화합물 또는 2종 이상의 혼합물의 성분으로 포함되는 것을 특징으로 하는 유기전기소자.
- 제 5항에 있어서,상기 유기물층은 스핀코팅 공정, 노즐 프린팅 공정, 잉크젯 프린팅 공정, 슬롯코팅 공정, 딥코팅 공정 또는 롤투롤 공정에 의해 형성되는 것을 특징으로 하는 유기전기소자.
- 제 5항의 유기전기소자를 포함하는 디스플레이장치; 및상기 디스플레이장치를 구동하는 제어부를 포함하는 전자장치.
- 제 8항에 있어서,상기 유기전기소자는 유기전기발광소자, 유기태양전지, 유기감광체, 유기트랜지스터, 및 단색 또는 백색 조명용 소자 중 하나인 것을 특징으로 하는 전자장치.
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CN110577471B (zh) * | 2018-06-11 | 2023-09-29 | 乐金显示有限公司 | 电致发光化合物和包括该电致发光化合物的电致发光装置 |
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CN114230564A (zh) * | 2021-11-02 | 2022-03-25 | 长春海谱润斯科技股份有限公司 | 一种杂环类化合物及其有机电致发光器件 |
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KR20160139159A (ko) | 2016-12-07 |
EP3305773A4 (en) | 2019-04-10 |
JP6654204B2 (ja) | 2020-02-26 |
KR101923171B1 (ko) | 2018-11-28 |
US11380846B2 (en) | 2022-07-05 |
EP3305773A1 (en) | 2018-04-11 |
CN107667098B (zh) | 2024-04-16 |
US20180083197A1 (en) | 2018-03-22 |
JP2018524289A (ja) | 2018-08-30 |
CN107667098A (zh) | 2018-02-06 |
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