KR102653484B1 - Novel compound and organic light emitting device comprising the same - Google Patents
Novel compound and organic light emitting device comprising the same Download PDFInfo
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- KR102653484B1 KR102653484B1 KR1020190003143A KR20190003143A KR102653484B1 KR 102653484 B1 KR102653484 B1 KR 102653484B1 KR 1020190003143 A KR1020190003143 A KR 1020190003143A KR 20190003143 A KR20190003143 A KR 20190003143A KR 102653484 B1 KR102653484 B1 KR 102653484B1
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- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- TVIVIEFSHFOWTE-UHFFFAOYSA-K tri(quinolin-8-yloxy)alumane Chemical compound [Al+3].C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1 TVIVIEFSHFOWTE-UHFFFAOYSA-K 0.000 description 1
- KWQNQSDKCINQQP-UHFFFAOYSA-K tri(quinolin-8-yloxy)gallane Chemical compound C1=CN=C2C(O[Ga](OC=3C4=NC=CC=C4C=CC=3)OC=3C4=NC=CC=C4C=CC=3)=CC=CC2=C1 KWQNQSDKCINQQP-UHFFFAOYSA-K 0.000 description 1
- 125000005259 triarylamine group Chemical group 0.000 description 1
- 150000003852 triazoles Chemical class 0.000 description 1
- 125000001425 triazolyl group Chemical group 0.000 description 1
- LALRXNPLTWZJIJ-UHFFFAOYSA-N triethylborane Chemical group CCB(CC)CC LALRXNPLTWZJIJ-UHFFFAOYSA-N 0.000 description 1
- WXRGABKACDFXMG-UHFFFAOYSA-N trimethylborane Chemical group CB(C)C WXRGABKACDFXMG-UHFFFAOYSA-N 0.000 description 1
- 125000000026 trimethylsilyl group Chemical group [H]C([H])([H])[Si]([*])(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- MXSVLWZRHLXFKH-UHFFFAOYSA-N triphenylborane Chemical group C1=CC=CC=C1B(C=1C=CC=CC=1)C1=CC=CC=C1 MXSVLWZRHLXFKH-UHFFFAOYSA-N 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
- 238000001771 vacuum deposition Methods 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000008096 xylene Substances 0.000 description 1
- NAWDYIZEMPQZHO-UHFFFAOYSA-N ytterbium Chemical compound [Yb] NAWDYIZEMPQZHO-UHFFFAOYSA-N 0.000 description 1
- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
- YVTHLONGBIQYBO-UHFFFAOYSA-N zinc indium(3+) oxygen(2-) Chemical compound [O--].[Zn++].[In+3] YVTHLONGBIQYBO-UHFFFAOYSA-N 0.000 description 1
- HTPBWAPZAJWXKY-UHFFFAOYSA-L zinc;quinolin-8-olate Chemical compound [Zn+2].C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1 HTPBWAPZAJWXKY-UHFFFAOYSA-L 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F7/00—Compounds containing elements of Groups 4 or 14 of the Periodic System
- C07F7/02—Silicon compounds
- C07F7/08—Compounds having one or more C—Si linkages
- C07F7/0803—Compounds with Si-C or Si-Si linkages
- C07F7/081—Compounds with Si-C or Si-Si linkages comprising at least one atom selected from the elements N, O, halogen, S, Se or Te
- C07F7/0812—Compounds with Si-C or Si-Si linkages comprising at least one atom selected from the elements N, O, halogen, S, Se or Te comprising a heterocyclic ring
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/40—Organosilicon compounds, e.g. TIPS pentacene
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/615—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene
- H10K85/626—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene containing more than one polycyclic condensed aromatic rings, e.g. bis-anthracene
Abstract
본 발명은 신규한 화합물 및 이를 이용한 유기발광 소자를 제공한다. The present invention provides a novel compound and an organic light-emitting device using the same.
Description
본 발명은 신규한 화합물 및 이를 포함하는 유기 발광 소자에 관한 것이다. The present invention relates to novel compounds and organic light-emitting devices containing them.
일반적으로 유기 발광 현상이란 유기 물질을 이용하여 전기에너지를 빛에너지로 전환시켜주는 현상을 말한다. 유기 발광 현상을 이용하는 유기 발광 소자는 넓은 시야각, 우수한 콘트라스트, 빠른 응답 시간을 가지며, 휘도, 구동 전압 및 응답 속도 특성이 우수하여 많은 연구가 진행되고 있다. In general, organic luminescence refers to a phenomenon that converts electrical energy into light energy using organic materials. Organic light-emitting devices using the organic light-emitting phenomenon have a wide viewing angle, excellent contrast, fast response time, and excellent luminance, driving voltage, and response speed characteristics, so much research is being conducted.
유기 발광 소자는 일반적으로 양극과 음극 및 상기 양극과 음극 사이에 유기물 층을 포함하는 구조를 가진다. 상기 유기물 층은 유기 발광 소자의 효율과 안정성을 높이기 위하여 각기 다른 물질로 구성된 다층의 구조로 이루어진 경우가 많으며, 예컨대 정공주입층, 정공수송층, 발광층, 전자수송층, 전자주입층 등으로 이루어질 수 있다. 이러한 유기 발광 소자의 구조에서 두 전극 사이에 전압을 걸어주게 되면 양극에서는 정공이, 음극에서는 전자가 유기물층에 주입되게 되고, 주입된 정공과 전자가 만났을 때 엑시톤(exciton)이 형성되며, 이 엑시톤이 다시 바닥상태로 떨어질 때 빛이 나게 된다. Organic light emitting devices generally have a structure including an anode, a cathode, and an organic layer between the anode and the cathode. The organic material layer is often composed of a multi-layer structure made of different materials to increase the efficiency and stability of the organic light-emitting device, and may be composed of, for example, a hole injection layer, a hole transport layer, a light-emitting layer, an electron transport layer, and an electron injection layer. In the structure of this organic light emitting device, when a voltage is applied between the two electrodes, holes are injected from the anode and electrons from the cathode into the organic material layer. When the injected holes and electrons meet, an exciton is formed, and this exciton is When it falls back to the ground state, it glows.
상기와 같은 유기 발광 소자에 사용되는 유기물에 대하여 새로운 재료의 개발이 지속적으로 요구되고 있다.The development of new materials for organic materials used in organic light-emitting devices as described above is continuously required.
한편, 최근에는 공정 비용 절감을 위하여 기존의 증착 공정 대신 용액 공정, 특히 잉크젯 공정을 이용한 유기 발광 소자가 개발되고 있다. 초창기에는 모든 유기 발광 소자 층을 용액 공정으로 코팅하여 유기 발광 소자를 개발하려 하였으나 현재 기술로는 한계가 있어, 정구조 형태에서 HIL, HTL, EML만을 용액 공정으로 진행하고 추후 공정은 기존의 증착 공정을 활용하는 하이브리드(hybrid) 공정이 연구 중이다. Meanwhile, recently, in order to reduce process costs, organic light-emitting devices have been developed using a solution process, especially an inkjet process, instead of the existing deposition process. In the early days, attempts were made to develop organic light emitting devices by coating all organic light emitting device layers using a solution process, but there are limitations to the current technology, so only HIL, HTL, and EML in the form of a fixed structure were performed using a solution process, and the subsequent processes were carried out using the existing deposition process. A hybrid process utilizing is being studied.
이에 본 발명에서는 유기 발광 소자에 사용될 수 있으면서 동시에 용액 공정으로 증착이 가능한 신규한 유기 발광 소자의 소재를 제공한다. Accordingly, the present invention provides a novel organic light-emitting device material that can be used in organic light-emitting devices and can be deposited through a solution process.
본 발명은 신규한 화합물 및 이를 포함하는 유기 발광 소자에 관한 것이다. The present invention relates to novel compounds and organic light-emitting devices containing them.
본 발명은 하기 화학식 1로 표시되는 화합물을 제공한다:The present invention provides a compound represented by the following formula (1):
[화학식 1][Formula 1]
상기 화학식 1에서,In Formula 1,
R은 Si(R1)(R2)(R3)이고,R is Si(R 1 )(R 2 )(R 3 ),
R1 내지 R3은 각각 독립적으로 수소; 중수소; 치환 또는 비치환된 C1-60 알킬; 또는 치환 또는 비치환된 C6-60 아릴; (트리(C1-60 알킬)실릴)-(C1-10 알킬렌)-; 또는 (트리(C6-60 아릴)실릴)-(C1-10 알킬렌)- 이거나, 또는 R1 및 R2가 결합하여 고리를 형성하며, 단 R1 내지 R3 중 적어도 하나는 치환 또는 비치환된 C6-60 아릴이고, R 1 to R 3 are each independently hydrogen; heavy hydrogen; Substituted or unsubstituted C 1-60 alkyl; Or substituted or unsubstituted C 6-60 aryl; (tri(C 1-60 alkyl)silyl)-(C 1-10 alkylene)-; or (tri(C 6-60 aryl)silyl)-(C 1-10 alkylene)-, or R 1 and R 2 are combined to form a ring, provided that at least one of R 1 to R 3 is substituted or It is unsubstituted C 6-60 aryl,
L1은 단일결합; 페닐렌; 또는 나프탈렌디일이고,L 1 is a single bond; phenylene; or naphthalenediyl,
m 및 n은 각각 독립적으로 0 내지 4의 정수이고,m and n are each independently integers from 0 to 4,
R4 및 R5는 각각 독립적으로 수소; 중수소; 할로겐; 시아노; 치환 또는 비치환된 C1-60 알킬; 치환 또는 비치환된 C1-60 알콕시; 치환 또는 비치환된 C1-60 티오알킬; 치환 또는 비치환된 C3-60 사이클로알킬; 치환 또는 비치환된 C6-60 아릴; 또는 치환 또는 비치환된 N, O 및 S로 구성되는 군으로부터 선택되는 헤테로원자를 1개 이상 포함하는 C5-60 헤테로아릴이고,R 4 and R 5 are each independently hydrogen; heavy hydrogen; halogen; cyano; Substituted or unsubstituted C 1-60 alkyl; Substituted or unsubstituted C 1-60 alkoxy; Substituted or unsubstituted C 1-60 thioalkyl; Substituted or unsubstituted C 3-60 cycloalkyl; Substituted or unsubstituted C 6-60 aryl; or C 5-60 heteroaryl containing one or more heteroatoms selected from the group consisting of substituted or unsubstituted N, O and S,
Ar1은 치환 또는 비치환된 C6-60 아릴; 또는 치환 또는 비치환된 N, O 및 S로 구성되는 군으로부터 선택되는 헤테로원자를 1개 이상 포함하는 C5-60 헤테로아릴이다.Ar 1 is substituted or unsubstituted C 6-60 aryl; or C 5-60 heteroaryl containing one or more heteroatoms selected from the group consisting of substituted or unsubstituted N, O, and S.
또한, 본 발명은 제1 전극; 상기 제1 전극과 대향하여 구비된 제2 전극; 및 상기 제1 전극과 상기 제2 전극 사이에 구비된 1층 이상의 유기물 층을 포함하는 유기 발광 소자로서, 상기 유기물층 중 1층 이상은 상기 화학식 1로 표시되는 화합물을 포함하는, 유기 발광 소자를 제공한다.In addition, the present invention includes a first electrode; a second electrode provided opposite to the first electrode; and an organic light-emitting device comprising at least one organic material layer provided between the first electrode and the second electrode, wherein at least one layer of the organic material layer includes a compound represented by Formula 1. do.
상술한 화학식 1로 표시되는 화합물은 유기 발광 소자의 유기물 층의 재료로서 사용될 수 있으며, 유기 발광 소자에서 효율의 향상, 낮은 구동전압 및/또는 수명 특성을 향상시킬 수 있다. 특히, 상술한 화학식 1로 표시되는 화합물은 용액 공정에 적용할 수 있으며, 정공주입, 정공수송, 정공주입 및 수송, 발광, 전자수송, 또는 전자주입 재료로 사용될 수 있다.The compound represented by the above-mentioned formula 1 can be used as a material for the organic layer of an organic light-emitting device, and can improve efficiency, low driving voltage, and/or lifespan characteristics of the organic light-emitting device. In particular, the compound represented by the above-mentioned formula 1 can be applied to a solution process and can be used as a hole injection, hole transport, hole injection and transport, light emitting, electron transport, or electron injection material.
도 1은 기판(1), 양극(2), 발광층(3), 음극(4)으로 이루어진 유기 발광 소자의 예를 도시한 것이다.
도 2는 기판 (1), 양극(2), 정공주입층(5), 정공수송층(6), 발광층(7), 전자수송층(8) 및 음극(4)로 이루어진 유기 발광 소자의 예를 도시한 것이다.Figure 1 shows an example of an organic light emitting device consisting of a substrate 1, an anode 2, a light emitting layer 3, and a cathode 4.
Figure 2 shows an example of an organic light emitting device consisting of a substrate (1), an anode (2), a hole injection layer (5), a hole transport layer (6), a light emitting layer (7), an electron transport layer (8), and a cathode (4). It was done.
이하, 본 발명의 이해를 돕기 위하여 보다 상세히 설명한다.Hereinafter, the present invention will be described in more detail to aid understanding.
본 발명은 상기 화학식 1로 표시되는 화합물을 제공한다. The present invention provides a compound represented by Formula 1 above.
본 명세서에서, 
본 명세서에서 "치환 또는 비치환된" 이라는 용어는 중수소; 할로겐기; 니트릴기; 니트로기; 히드록시기; 카보닐기; 에스테르기; 이미드기; 아미노기; 포스핀옥사이드기; 알콕시기; 아릴옥시기; 알킬티옥시기; 아릴티옥시기; 알킬술폭시기; 아릴술폭시기; 실릴기; 붕소기; 알킬기; 사이클로알킬기; 알케닐기; 아릴기; 아르알킬기; 아르알케닐기; 알킬아릴기; 알킬아민기; 아랄킬아민기; 헤테로아릴아민기; 아릴아민기; 아릴포스핀기; 또는 N, O 및 S 원자 중 1개 이상을 포함하는 헤테로고리기로 이루어진 군에서 선택된 1개 이상의 치환기로 치환 또는 비치환되거나, 상기 예시된 치환기 중 2 이상의 치환기가 연결된 치환 또는 비치환된 것을 의미한다. 예컨대, "2 이상의 치환기가 연결된 치환기"는 비페닐기일 수 있다. 즉, 비페닐기는 아릴기일 수도 있고, 2개의 페닐기가 연결된 치환기로 해석될 수 있다.As used herein, the term “substituted or unsubstituted” refers to deuterium; halogen group; Nitrile group; nitro group; hydroxyl group; carbonyl group; ester group; imide group; amino group; Phosphine oxide group; Alkoxy group; Aryloxy group; Alkylthioxy group; Arylthioxy group; Alkyl sulphoxy group; Aryl sulfoxy group; silyl group; boron group; Alkyl group; Cycloalkyl group; alkenyl group; Aryl group; Aralkyl group; Aralkenyl group; Alkylaryl group; Alkylamine group; Aralkylamine group; heteroarylamine group; Arylamine group; Arylphosphine group; or substituted or unsubstituted with one or more substituents selected from the group consisting of heterocyclic groups containing one or more of N, O and S atoms, or substituted or unsubstituted with two or more of the above-exemplified substituents linked. . For example, “a substituent group in which two or more substituents are connected” may be a biphenyl group. That is, the biphenyl group may be an aryl group, or it may be interpreted as a substituent in which two phenyl groups are connected.
본 명세서에서 카보닐기의 탄소수는 특별히 한정되지 않으나, 탄소수 1 내지 40인 것이 바람직하다. 구체적으로 하기와 같은 구조의 화합물이 될 수 있으나, 이에 한정되는 것은 아니다.In this specification, the carbon number of the carbonyl group is not particularly limited, but is preferably 1 to 40 carbon atoms. Specifically, it may be a compound with the following structure, but is not limited thereto.
본 명세서에 있어서, 에스테르기는 에스테르기의 산소가 탄소수 1 내지 25의 직쇄, 분지쇄 또는 고리쇄 알킬기 또는 탄소수 6 내지 25의 아릴기로 치환될 수 있다. 구체적으로, 하기 구조식의 화합물이 될 수 있으나, 이에 한정되는 것은 아니다.In the present specification, the oxygen of the ester group may be substituted with a straight-chain, branched-chain, or ring-chain alkyl group having 1 to 25 carbon atoms or an aryl group having 6 to 25 carbon atoms. Specifically, it may be a compound of the following structural formula, but is not limited thereto.
본 명세서에 있어서, 이미드기의 탄소수는 특별히 한정되지 않으나, 탄소수 1 내지 25인 것이 바람직하다. 구체적으로 하기와 같은 구조의 화합물이 될 수 있으나, 이에 한정되는 것은 아니다.In this specification, the carbon number of the imide group is not particularly limited, but is preferably 1 to 25 carbon atoms. Specifically, it may be a compound with the following structure, but is not limited thereto.
본 명세서에 있어서, 실릴기는 구체적으로 트리메틸실릴기, 트리에틸실릴기, t-부틸디메틸실릴기, 비닐디메틸실릴기, 프로필디메틸실릴기, 트리페닐실릴기, 디페닐실릴기, 페닐실릴기 등이 있으나 이에 한정되지 않는다. In the present specification, the silyl group specifically includes trimethylsilyl group, triethylsilyl group, t-butyldimethylsilyl group, vinyldimethylsilyl group, propyldimethylsilyl group, triphenylsilyl group, diphenylsilyl group, phenylsilyl group, etc. However, it is not limited to this.
본 명세서에 있어서, 붕소기는 구체적으로 트리메틸붕소기, 트리에틸붕소기, t-부틸디메틸붕소기, 트리페닐붕소기, 페닐붕소기 등이 있으나 이에 한정되지 않는다.In the present specification, the boron group specifically includes trimethyl boron group, triethyl boron group, t-butyldimethyl boron group, triphenyl boron group, and phenyl boron group, but is not limited thereto.
본 명세서에 있어서, 할로겐기의 예로는 불소, 염소, 브롬 또는 요오드가 있다.In this specification, examples of halogen groups include fluorine, chlorine, bromine, or iodine.
본 명세서에 있어서, 상기 알킬기는 직쇄 또는 분지쇄일 수 있고, 탄소수는 특별히 한정되지 않으나 1 내지 40인 것이 바람직하다. 일 실시상태에 따르면, 상기 알킬기의 탄소수는 1 내지 20이다. 또 하나의 실시상태에 따르면, 상기 알킬기의 탄소수는 1 내지 10이다. 또 하나의 실시상태에 따르면, 상기 알킬기의 탄소수는 1 내지 6이다. 알킬기의 구체적인 예로는 메틸, 에틸, 프로필, n-프로필, 이소프로필, 부틸, n-부틸, 이소부틸, tert-부틸, sec-부틸, 1-메틸-부틸, 1-에틸-부틸, 펜틸, n-펜틸, 이소펜틸, 네오펜틸, tert-펜틸, 헥실, n-헥실, 1-메틸펜틸, 2-메틸펜틸, 4-메틸-2-펜틸, 3,3-디메틸부틸, 2-에틸부틸, 헵틸, n-헵틸, 1-메틸헥실, 사이클로펜틸메틸,사이클로헥틸메틸, 옥틸, n-옥틸, tert-옥틸, 1-메틸헵틸, 2-에틸헥실, 2-프로필펜틸, n-노닐, 2,2-디메틸헵틸, 1-에틸-프로필, 1,1-디메틸-프로필, 이소헥실, 2-메틸펜틸, 4-메틸헥실, 5-메틸헥실 등이 있으나, 이들에 한정되지 않는다.In the present specification, the alkyl group may be straight chain or branched, and the number of carbon atoms is not particularly limited, but is preferably 1 to 40. According to one embodiment, the carbon number of the alkyl group is 1 to 20. According to another embodiment, the carbon number of the alkyl group is 1 to 10. According to another embodiment, the carbon number of the alkyl group is 1 to 6. Specific examples of alkyl groups include methyl, ethyl, propyl, n-propyl, isopropyl, butyl, n-butyl, isobutyl, tert-butyl, sec-butyl, 1-methyl-butyl, 1-ethyl-butyl, pentyl, n. -pentyl, isopentyl, neopentyl, tert-pentyl, hexyl, n-hexyl, 1-methylpentyl, 2-methylpentyl, 4-methyl-2-pentyl, 3,3-dimethylbutyl, 2-ethylbutyl, heptyl , n-heptyl, 1-methylhexyl, cyclopentylmethyl, cyclohexylmethyl, octyl, n-octyl, tert-octyl, 1-methylheptyl, 2-ethylhexyl, 2-propylpentyl, n-nonyl, 2,2 -Dimethylheptyl, 1-ethyl-propyl, 1,1-dimethyl-propyl, isohexyl, 2-methylpentyl, 4-methylhexyl, 5-methylhexyl, etc., but is not limited to these.
본 명세서에 있어서, 상기 알케닐기는 직쇄 또는 분지쇄일 수 있고, 탄소수는 특별히 한정되지 않으나, 2 내지 40인 것이 바람직하다. 일 실시상태에 따르면, 상기 알케닐기의 탄소수는 2 내지 20이다. 또 하나의 실시상태에 따르면, 상기 알케닐기의 탄소수는 2 내지 10이다. 또 하나의 실시상태에 따르면, 상기 알케닐기의 탄소수는 2 내지 6이다. 구체적인 예로는 비닐, 1-프로페닐, 이소프로페닐, 1-부테닐, 2-부테닐, 3-부테닐, 1-펜테닐, 2-펜테닐, 3-펜테닐, 3-메틸-1-부테닐, 1,3-부타디에닐, 알릴, 1-페닐비닐-1-일, 2-페닐비닐-1-일, 2,2-디페닐비닐-1-일, 2-페닐-2-(나프틸-1-일)비닐-1-일, 2,2-비스(디페닐-1-일)비닐-1-일, 스틸베닐기, 스티레닐기 등이 있으나 이들에 한정되지 않는다.In the present specification, the alkenyl group may be straight chain or branched, and the number of carbon atoms is not particularly limited, but is preferably 2 to 40. According to one embodiment, the alkenyl group has 2 to 20 carbon atoms. According to another embodiment, the alkenyl group has 2 to 10 carbon atoms. According to another embodiment, the alkenyl group has 2 to 6 carbon atoms. Specific examples include vinyl, 1-propenyl, isopropenyl, 1-butenyl, 2-butenyl, 3-butenyl, 1-pentenyl, 2-pentenyl, 3-pentenyl, 3-methyl-1- Butenyl, 1,3-butadienyl, allyl, 1-phenylvinyl-1-yl, 2-phenylvinyl-1-yl, 2,2-diphenylvinyl-1-yl, 2-phenyl-2-( Naphthyl-1-yl) vinyl-1-yl, 2,2-bis (diphenyl-1-yl) vinyl-1-yl, stilbenyl group, styrenyl group, etc., but are not limited to these.
본 명세서에 있어서, 사이클로알킬기는 특별히 한정되지 않으나, 탄소수 3 내지 60인 것이 바람직하며, 일 실시상태에 따르면, 상기 사이클로알킬기의 탄소수는 3 내지 30이다. 또 하나의 실시상태에 따르면, 상기 사이클로알킬기의 탄소수는 3 내지 20이다. 또 하나의 실시상태에 따르면, 상기 사이클로알킬기의 탄소수는 3 내지 6이다. 구체적으로 사이클로프로필, 사이클로부틸, 사이클로펜틸, 3-메틸사이클로펜틸, 2,3-디메틸사이클로펜틸, 사이클로헥실, 3-메틸사이클로헥실, 4-메틸사이클로헥실, 2,3-디메틸사이클로헥실, 3,4,5-트리메틸사이클로헥실, 4-tert-부틸사이클로헥실, 사이클로헵틸, 사이클로옥틸 등이 있으나, 이에 한정되지 않는다.In the present specification, the cycloalkyl group is not particularly limited, but preferably has 3 to 60 carbon atoms, and according to one embodiment, the cycloalkyl group has 3 to 30 carbon atoms. According to another embodiment, the carbon number of the cycloalkyl group is 3 to 20. According to another embodiment, the carbon number of the cycloalkyl group is 3 to 6. Specifically, cyclopropyl, cyclobutyl, cyclopentyl, 3-methylcyclopentyl, 2,3-dimethylcyclopentyl, cyclohexyl, 3-methylcyclohexyl, 4-methylcyclohexyl, 2,3-dimethylcyclohexyl, 3, Examples include, but are not limited to, 4,5-trimethylcyclohexyl, 4-tert-butylcyclohexyl, cycloheptyl, and cyclooctyl.
본 명세서에 있어서, 아릴기는 특별히 한정되지 않으나 탄소수 6 내지 60인 것이 바람직하며, 단환식 아릴기 또는 다환식 아릴기일 수 있다. 일 실시상태에 따르면, 상기 아릴기의 탄소수는 6 내지 30이다. 일 실시상태에 따르면, 상기 아릴기의 탄소수는 6 내지 20이다. 상기 아릴기가 단환식 아릴기로는 페닐기, 바이페닐기, 터페닐기 등이 될 수 있으나, 이에 한정되는 것은 아니다. 상기 다환식 아릴기로는 나프틸기, 안트라세닐기, 페난트릴기, 파이레닐기, 페릴레닐기, 크라이세닐기, 플루오레닐기 등이 될 수 있으나, 이에 한정되는 것은 아니다.In the present specification, the aryl group is not particularly limited, but preferably has 6 to 60 carbon atoms, and may be a monocyclic aryl group or a polycyclic aryl group. According to one embodiment, the aryl group has 6 to 30 carbon atoms. According to one embodiment, the aryl group has 6 to 20 carbon atoms. The aryl group may be a monocyclic aryl group, such as a phenyl group, biphenyl group, or terphenyl group, but is not limited thereto. The polycyclic aryl group may be a naphthyl group, anthracenyl group, phenanthryl group, pyrenyl group, perylenyl group, chrysenyl group, fluorenyl group, etc., but is not limited thereto.
본 명세서에 있어서, 플루오레닐기는 치환될 수 있고, 치환기 2개가 서로 결합하여 스피로 구조를 형성할 수 있다. 상기 플루오레닐기가 치환되는 경우, 
본 명세서에 있어서, 헤테로고리기는 이종 원소로 O, N, P, Si 및 S 중 1개 이상을 포함하는 헤테로고리기로서, 탄소수는 특별히 한정되지 않으나, 탄소수 2 내지 60인 것이 바람직하다. 헤테로고리기의 예로는 티오펜기, 퓨란기, 피롤기, 이미다졸기, 티아졸기, 옥사졸기, 옥사디아졸기, 트리아졸기, 피리딜기, 비피리딜기, 피리미딜기, 트리아진기, 아크리딜기, 피리다진기, 피라지닐기, 퀴놀리닐기, 퀴나졸린기, 퀴녹살리닐기, 프탈라지닐기, 피리도 피리미디닐기, 피리도 피라지닐기, 피라지노 피라지닐기, 이소퀴놀린기, 인돌기, 카바졸기, 벤조옥사졸기, 벤조이미다졸기, 벤조티아졸기, 벤조카바졸기, 벤조티오펜기, 디벤조티오펜기, 벤조퓨라닐기, 페난쓰롤린기(phenanthroline), 이소옥사졸릴기, 티아디아졸릴기, 페노티아지닐기 및 디벤조퓨라닐기 등이 있으나, 이들에만 한정되는 것은 아니다.In the present specification, the heterocyclic group is a heterocyclic group containing one or more of O, N, P, Si, and S as a heterogeneous element, and the number of carbon atoms is not particularly limited, but is preferably 2 to 60 carbon atoms. Examples of heterocyclic groups include thiophene group, furan group, pyrrole group, imidazole group, thiazole group, oxazole group, oxadiazole group, triazole group, pyridyl group, bipyridyl group, pyrimidyl group, triazine group, and acridyl group. , pyridazine group, pyrazinyl group, quinolinyl group, quinazoline group, quinoxalinyl group, phthalazinyl group, pyrido pyrimidinyl group, pyrido pyrazinyl group, pyrazino pyrazinyl group, isoquinoline group, indole group , carbazole group, benzooxazole group, benzoimidazole group, benzothiazole group, benzocarbazole group, benzothiophene group, dibenzothiophene group, benzofuranyl group, phenanthroline group, isoxazolyl group, thiadia These include, but are not limited to, a zolyl group, a phenothiazinyl group, and a dibenzofuranyl group.
본 명세서에 있어서, 아르알킬기, 아르알케닐기, 알킬아릴기, 아릴아민기 중의 아릴기는 전술한 아릴기의 예시와 같다. 본 명세서에 있어서, 아르알킬기, 알킬아릴기, 알킬아민기 중 알킬기는 전술한 알킬기의 예시와 같다. 본 명세서에 있어서, 헤테로아릴아민 중 헤테로아릴은 전술한 헤테로고리기에 관한 설명이 적용될 수 있다. 본 명세서에 있어서, 아르알케닐기 중 알케닐기는 전술한 알케닐기의 예시와 같다. 본 명세서에 있어서, 아릴렌은 2가기인 것을 제외하고는 전술한 아릴기에 관한 설명이 적용될 수 있다. 본 명세서에 있어서, 헤테로아릴렌은 2가기인 것을 제외하고는 전술한 헤테로고리기에 관한 설명이 적용될 수 있다. 본 명세서에 있어서, 탄화수소 고리는 1가기가 아니고, 2개의 치환기가 결합하여 형성한 것을 제외하고는 전술한 아릴기 또는 사이클로알킬기에 관한 설명이 적용될 수 있다. 본 명세서에 있어서, 헤테로고리는 1가기가 아니고, 2개의 치환기가 결합하여 형성한 것을 제외하고는 전술한 헤테로고리기에 관한 설명이 적용될 수 있다.In this specification, the aryl group among the aralkyl group, aralkenyl group, alkylaryl group, and arylamine group is the same as the example of the aryl group described above. In this specification, the aralkyl group, alkylaryl group, and alkylamine group are the same as the examples of the alkyl group described above. In the present specification, the description regarding the heterocyclic group described above may be applied to heteroaryl among heteroarylamines. In this specification, the alkenyl group among the aralkenyl groups is the same as the example of the alkenyl group described above. In this specification, the description of the aryl group described above can be applied, except that arylene is a divalent group. In the present specification, the description of the heterocyclic group described above can be applied, except that heteroarylene is a divalent group. In the present specification, the description of the aryl group or cycloalkyl group described above can be applied, except that the hydrocarbon ring is not monovalent and is formed by combining two substituents. In the present specification, the description of the heterocyclic group described above can be applied, except that the heterocyclic ring is not monovalent and is formed by combining two substituents.
바람직하게는 R1 내지 R3는 각각 독립적으로 C1-5 알킬; 트리메틸실릴-에틸렌; 또는 치환 또는 비치환된 페닐이거나, 또는 R1 및 R2가 결합하여 사이클로펜틸; 사이클로헥실; 또는 2,3-다이하이드로-1H-인데닐 고리를 형성할 수 있다.Preferably, R 1 to R 3 are each independently C 1-5 alkyl; trimethylsilyl-ethylene; or substituted or unsubstituted phenyl, or R 1 and R 2 are combined to form cyclopentyl; cyclohexyl; Alternatively, it may form a 2,3-dihydro-1H-indenyl ring.
바람직하게는 R1 내지 R3 중 적어도 하나는 치환 또는 비치환된 페닐일 수 있으며, 보다 바람직하게는 R1 내지 R3는 모두 치환 또는 비치환된 페닐일 수 있다.Preferably, at least one of R 1 to R 3 may be substituted or unsubstituted phenyl, and more preferably, all of R 1 to R 3 may be substituted or unsubstituted phenyl.
바람직하게는 R1 내지 R3 중 적어도 하나는 C1-5 알킬로 치환된 페닐 또는 비치환된 페닐일 수 있으며, 보다 바람직하게는 R1 내지 R3는 모두 C1-5 알킬로 치환된 페닐 또는 비치환된 페닐일 수 있다.Preferably, at least one of R 1 to R 3 may be phenyl or unsubstituted phenyl substituted with C 1-5 alkyl, and more preferably, all of R 1 to R 3 are phenyl substituted with C 1-5 alkyl. Or it may be unsubstituted phenyl.
바람직하게는 m 및 n은 각각 독립적으로 0 또는 1일 수 있다.Preferably, m and n may each independently be 0 or 1.
또한, 바람직하게는 R4 및 R5는 각각 독립적으로 수소; 또는 C1-10 알킬일 수 있다.Also, preferably, R 4 and R 5 are each independently hydrogen; Or it may be C 1-10 alkyl.
바람직하게는 Ar1은 중수소가 치환된 페닐; C1-10 알킬이 치환된 페닐; 트리(C1-5 알킬)실릴이 치환된 페닐; 비치환된 페닐; 또는 나프틸일 수 있다.Preferably, Ar 1 is deuterium-substituted phenyl; C 1-10 alkyl substituted phenyl; phenyl substituted with tri(C 1-5 alkyl)silyl; unsubstituted phenyl; Or it may be naphthyl.
예를 들어, 상기 화학식 1로 표시되는 화합물은, 하기 화합물로 구성되는 군으로부터 선택될 수 있다:For example, the compound represented by Formula 1 may be selected from the group consisting of the following compounds:
한편, 상기 화학식 1로 표시되는 화합물은 하기 반응식 1과 같은 제조 방법으로 제조할 수 있다. Meanwhile, the compound represented by Chemical Formula 1 can be prepared by the manufacturing method shown in Scheme 1 below.
[반응식 1][Scheme 1]
상기 반응식 1은 스즈키 커플링 반응으로서, 각 반응은 팔라듐 촉매와 염기 존재하에 수행하는 것이 바람직하며, 스즈키 커플링 반응을 위한 반응기는 당업계에 알려진 바에 따라 변경이 가능하다. 상기 제조 방법은 후술할 제조예에서 보다 구체화될 수 있다.Scheme 1 is a Suzuki coupling reaction, and each reaction is preferably performed in the presence of a palladium catalyst and a base, and the reactor for the Suzuki coupling reaction can be changed according to what is known in the art. The manufacturing method may be further detailed in the manufacturing examples described later.
또한, 본 발명은 상기 화학식 1로 표시되는 화합물을 포함하는 유기 발광 소자를 제공한다. 일례로, 본 발명은 제1 전극; 상기 제1 전극과 대향하여 구비된 제2 전극; 및 상기 제1 전극과 상기 제2 전극 사이에 구비된 1층 이상의 유기물 층을 포함하는 유기 발광 소자로서, 상기 유기물층 중 1층 이상은 상기 화학식 1로 표시되는 화합물을 포함하는, 유기 발광 소자를 제공한다. Additionally, the present invention provides an organic light-emitting device containing the compound represented by Formula 1 above. In one example, the present invention includes a first electrode; a second electrode provided opposite to the first electrode; and an organic light-emitting device comprising at least one organic material layer provided between the first electrode and the second electrode, wherein at least one layer of the organic material layer includes a compound represented by Formula 1. do.
상기 화학식 1로 표시되는 화합물은 실란기의 bulky한 구조 도입을 통해 용해도가 향상되어 용액 공정성이 증가한다. 따라서 상기 화학식 1로 표시되는 화합물을 포함하는 유기 발광 소자 제작 시 효율과 수명이 향상될 수 있다. The compound represented by Formula 1 has improved solubility through the introduction of a bulky structure of a silane group, thereby increasing solution fairness. Therefore, when manufacturing an organic light-emitting device containing the compound represented by Formula 1, efficiency and lifespan can be improved.
또한, 실란기의 도입 시 물질의 유리전이온도가 증가하여 물질의 안정성이 증가하게 되며, 필름 제작 시 필름의 안정성도 증가한다. 따라서 상기 화학식 1로 표시되는 화합물을 포함하는 유기 발광 소자 제작 시 고효율 장수명의 결과를 기대할 수 있다.In addition, when a silane group is introduced, the glass transition temperature of the material increases, increasing the stability of the material, and the stability of the film also increases when producing the film. Therefore, when manufacturing an organic light-emitting device containing the compound represented by Formula 1, high efficiency and long lifespan can be expected.
본 발명의 유기 발광 소자의 유기물 층은 단층 구조로 이루어질 수도 있으나, 2층 이상의 유기물층이 적층된 다층 구조로 이루어질 수 있다. 예컨대, 본 발명의 유기 발광 소자는 유기물 층으로서 정공주입층, 정공수송층, 발광층, 전자수송층, 전자주입층 등을 포함하는 구조를 가질 수 있다. 그러나 유기 발광 소자의 구조는 이에 한정되지 않고 더 적은 수의 유기층을 포함할 수 있다.The organic material layer of the organic light emitting device of the present invention may have a single-layer structure, or may have a multi-layer structure in which two or more organic material layers are stacked. For example, the organic light emitting device of the present invention may have a structure that includes a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer, etc. as an organic material layer. However, the structure of the organic light emitting device is not limited to this and may include fewer organic layers.
또한, 상기 유기물 층은 정공주입층, 정공수송층, 또는 정공 주입과 수송을 동시에 하는 층을 포함할 수 있고, 상기 정공주입층, 정공수송층, 또는 정공 주입과 수송을 동시에 하는 층은 상기 화학식 1 로 표시되는 화합물을 포함할 수 있다. In addition, the organic material layer may include a hole injection layer, a hole transport layer, or a layer that simultaneously performs hole injection and transport, and the hole injection layer, the hole transport layer, or a layer that performs hole injection and transport simultaneously has the formula (1) It may contain the indicated compounds.
또한, 상기 유기물 층은 발광층을 포함할 수 있고, 상기 발광층은 상기 화학식 1로 표시되는 화합물을 포함할 수 있다. 이때, 상기 화학식 1로 표시되는 화합물은 발광층에서 도펀트 물질로 사용될 수 있으며, 더욱 구체적으로, 상기 화학식 1로 표시되는 화합물은 청색 유기 발광 소자의 발광층에 사용되는 도펀트로 사용될 수 있다.Additionally, the organic layer may include a light-emitting layer, and the light-emitting layer may include the compound represented by Formula 1. At this time, the compound represented by Formula 1 may be used as a dopant material in the light-emitting layer. More specifically, the compound represented by Formula 1 may be used as a dopant used in the light-emitting layer of a blue organic light-emitting device.
또한, 상기 유기물 층은 전자수송층, 또는 전자주입층을 포함할 수 있고, 상기 전자수송층, 또는 전자주입층은 상기 화학식 1로 표시되는 화합물을 포함할 수 있다. Additionally, the organic material layer may include an electron transport layer or an electron injection layer, and the electron transport layer or the electron injection layer may include a compound represented by Formula 1.
또한, 상기 전자수송층, 전자주입층, 또는 전자수송 및 전자주입을 동시에 하는 층은 상기 화학식 1로 표시되는 화합물을 포함할 수 있다. Additionally, the electron transport layer, the electron injection layer, or the layer that simultaneously performs electron transport and electron injection may include the compound represented by Formula 1 above.
또한, 상기 유기물 층은 발광층 및 전자수송층을 포함하고, 상기 전자수송층은 상기 화학식 1로 표시되는 화합물을 포함할 수 있다. Additionally, the organic layer includes a light-emitting layer and an electron transport layer, and the electron transport layer may include a compound represented by Formula 1.
또한, 바람직하게는 상기 발광층은 하기 화학식 2의 화합물을 더 포함할 수 있다:Additionally, preferably, the light-emitting layer may further include a compound of the following formula (2):
[화학식 2][Formula 2]
상기 화학식 2에 있어서,In Formula 2,
L2는 단일 결합; 또는 치환 또는 비치환된 C6-60 아릴렌이고,L 2 is a single bond; Or substituted or unsubstituted C 6-60 arylene,
Ar2 및 Ar3은 각각 독립적으로 치환 또는 비치환된 C6-60 아릴; 또는 치환 또는 비치환된 N, O 및 S로 구성되는 군으로부터 선택되는 헤테로원자를 1개 이상 포함하는 C5-60 헤테로아릴이다.Ar 2 and Ar 3 are each independently substituted or unsubstituted C 6-60 aryl; or C 5-60 heteroaryl containing one or more heteroatoms selected from the group consisting of substituted or unsubstituted N, O, and S.
이때, 상기 화학식 2로 표시되는 화합물은 발광층에서 호스트 물질로 사용될 수 있으며, 더욱 구체적으로, 상기 화학식 2로 표시되는 화합물은 청색 유기 발광 소자의 발광층에 사용되는 호스트로 사용될 수 있다.At this time, the compound represented by Formula 2 may be used as a host material in the light-emitting layer. More specifically, the compound represented by Formula 2 may be used as a host used in the light-emitting layer of a blue organic light-emitting device.
바람직하게는, L2는 단일결합; 또는 페닐렌일 수 있다.Preferably, L 2 is a single bond; Or it may be phenylene.
바람직하게는, Ar2 및 Ar3은 각각 독립적으로 하기로 구성되는 군으로부터 선택되는 어느 하나일 수 있다:Preferably, Ar 2 and Ar 3 may each independently be any one selected from the group consisting of:
예를 들어, 상기 화학식 2로 표시되는 화합물은, 하기 화합물로 구성되는 군으로부터 선택될 수 있다:For example, the compound represented by Formula 2 may be selected from the group consisting of the following compounds:
본 발명에 따른 유기 발광 소자는, 기판 상에 양극, 1층 이상의 유기물 층 및 음극이 순차적으로 적층된 구조(normal type)의 유기 발광 소자일 수 있다. 또한, 본 발명에 따른 유기 발광 소자는 기판 상에 음극, 1층 이상의 유기물 층 및 양극이 순차적으로 적층된 역방향 구조(inverted type)의 유기 발광 소자일 수 있다. 예컨대, 본 발명의 일실시예에 따른 유기 발광 소자의 구조는 도 1 및 2에 예시되어 있다.The organic light emitting device according to the present invention may be a normal type organic light emitting device in which an anode, one or more organic material layers, and a cathode are sequentially stacked on a substrate. Additionally, the organic light emitting device according to the present invention may be an inverted type organic light emitting device in which a cathode, one or more organic layers, and an anode are sequentially stacked on a substrate. For example, the structure of an organic light emitting device according to an embodiment of the present invention is illustrated in FIGS. 1 and 2.
도 1은 기판(1), 양극(2), 발광층(3), 음극(4)으로 이루어진 유기 발광 소자의 예를 도시한 것이다. 이와 같은 구조에 있어서, 상기 화학식 1로 표시되는 화합물은 상기 발광층에 포함될 수 있다. 또한, 상기 발광층에는 상기 화학식 3으로 표시되는 화합물이 더 포함될 수 있다.Figure 1 shows an example of an organic light emitting device consisting of a substrate 1, an anode 2, a light emitting layer 3, and a cathode 4. In this structure, the compound represented by Formula 1 may be included in the light-emitting layer. Additionally, the light-emitting layer may further include a compound represented by Chemical Formula 3.
도 2는 기판 (1), 양극(2), 정공주입층(5), 정공수송층(6), 발광층(7), 전자수송층(8) 및 음극(4)로 이루어진 유기 발광 소자의 예를 도시한 것이다. 이와 같은 구조에 있어서, 상기 화학식 1로 표시되는 화합물은 상기 정공주입층, 정공수송층, 발광층 및 전자수송층 중 1층 이상에 포함될 수 있다. Figure 2 shows an example of an organic light emitting device consisting of a substrate (1), an anode (2), a hole injection layer (5), a hole transport layer (6), a light emitting layer (7), an electron transport layer (8), and a cathode (4). It was done. In this structure, the compound represented by Formula 1 may be included in one or more of the hole injection layer, hole transport layer, light emitting layer, and electron transport layer.
본 발명에 따른 유기 발광 소자는, 상기 유기물 층 중 1층 이상이 상기 화학식 1로 표시되는 화합물을 포함하는 것을 제외하고는 당 기술분야에 알려져 있는 재료와 방법으로 제조될 수 있다. 또한, 상기 유기 발광 소자가 복수개의 유기물층을 포함하는 경우, 상기 유기물층은 동일한 물질 또는 다른 물질로 형성될 수 있다. The organic light emitting device according to the present invention can be manufactured using materials and methods known in the art, except that at least one of the organic layers includes the compound represented by Formula 1 above. Additionally, when the organic light emitting device includes a plurality of organic material layers, the organic material layers may be formed of the same material or different materials.
예컨대, 본 발명에 따른 유기 발광 소자는 기판 상에 제1 전극, 유기물층 및 제2 전극을 순차적으로 적층시켜 제조할 수 있다. 이때, 스퍼터링법(sputtering)이나 전자빔 증발법(e-beam evaporation)과 같은 PVD(physical Vapor Deposition)방법을 이용하여, 기판 상에 금속 또는 전도성을 가지는 금속 산화물 또는 이들의 합금을 증착시켜 양극을 형성하고, 그 위에 정공 주입층, 정공 수송층, 발광층 및 전자 수송층을 포함하는 유기물 층을 형성한 후, 그 위에 음극으로 사용할 수 있는 물질을 증착시켜 제조할 수 있다. 이와 같은 방법 외에도, 기판 상에 음극 물질부터 유기물층, 양극 물질을 차례로 증착시켜 유기 발광 소자를 만들 수 있다. For example, the organic light emitting device according to the present invention can be manufactured by sequentially stacking a first electrode, an organic material layer, and a second electrode on a substrate. At this time, an anode is formed by depositing a metal or a conductive metal oxide or an alloy thereof on the substrate using a PVD (physical vapor deposition) method such as sputtering or e-beam evaporation. It can be manufactured by forming 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. In addition to this method, an organic light-emitting device can be made by sequentially depositing a cathode material, an organic material layer, and an anode material on a substrate.
또한, 상기 화학식 1로 표시되는 화합물은 유기 발광 소자의 제조시 진공 증착법 뿐만 아니라 용액 도포법에 의하여 유기물 층으로 형성될 수 있다. 특히, 상기 화학식 1로 표시되는 화합물은 용액 도포법에 사용되는 용매에 대한 용해도가 우수하여, 용액 도포법을 적용하기 용이하다. 여기서, 용액 도포법이라 함은 스핀 코팅, 딥코팅, 닥터 블레이딩, 잉크젯 프린팅, 스크린 프린팅, 스프레이법, 롤 코팅 등을 의미하지만, 이들만으로 한정되는 것은 아니다.In addition, the compound represented by Formula 1 may be formed as an organic layer by a solution coating method as well as a vacuum deposition method when manufacturing an organic light-emitting device. In particular, the compound represented by Formula 1 has excellent solubility in the solvent used in the solution application method, making it easy to apply the solution application method. Here, the solution application method refers to spin coating, dip coating, doctor blading, inkjet printing, screen printing, spraying, roll coating, etc., but is not limited to these.
이에, 본 발명은 상기 화학식 1로 표시되는 화합물 및 용매를 포함하는 코팅 조성물을 제공할 수 있다. Accordingly, the present invention can provide a coating composition containing the compound represented by Formula 1 and a solvent.
상기 용매는 본 발명에 따른 화합물을 용해 또는 분산시킬 수 있는 용매이면 특별히 제한되지 않으며, 일례로 클로로포름, 염화메틸렌, 1,2-디클로로에탄, 1,1,2-트리클로로에탄, 클로로벤젠, o-디클로로벤젠 등의 염소계 용매; 테트라하이드로퓨란, 디옥산 등의 에테르계 용매; 톨루엔, 크실렌, 트리메틸벤젠, 메시틸렌 등의 방향족 탄화수소계 용매; 시클로헥산, 메틸시클로헥산, n-펜탄, n-헥산, n-헵탄, n-옥탄, n-노난, n-데칸 등의 지방족 탄화수소계 용매; 아세톤, 메틸에틸케톤, 시클로헥사논 등의 케톤계 용매; 아세트산에틸, 아세트산부틸, 에틸셀로솔브아세테이트 등의 에스테르계 용매; 에틸렌글리콜, 에틸렌글리콜모노부틸에테르, 에틸렌글리콜모노에틸에테르, 에틸렌글리콜모노메틸에테르, 디메톡시에탄, 프로필렌글리콜, 디에톡시메탄, 트리에틸렌글리콜모노에틸에테르, 글리세린, 1,2-헥산디올 등의 다가 알코올 및 그의 유도체; 메탄올, 에탄올, 프로판올, 이소프로판올, 시클로헥산올 등의 알코올계 용매; 디메틸술폭사이드 등의 술폭사이드계 용매; 및 N-메틸-2-피롤리돈, N,N-디메틸포름아미드 등의 아미드계 용매; 부틸벤조에이트, 메틸-2-메톡시벤조에이트 등의 벤조에이트계 용매; 테트랄린; 3-phenoxy-toluene 등의 용매를 들 수 있다. 또한, 상술한 용매를 1종 단독으로 사용하거나 2종 이상의 용매를 혼합하여 사용할 수 있다. The solvent is not particularly limited as long as it is capable of dissolving or dispersing the compound according to the present invention, and examples include chloroform, methylene chloride, 1,2-dichloroethane, 1,1,2-trichloroethane, chlorobenzene, o -Chlorine-based solvents such as dichlorobenzene; Ether-based solvents such as tetrahydrofuran and dioxane; Aromatic hydrocarbon solvents such as toluene, xylene, trimethylbenzene, and mesitylene; Aliphatic hydrocarbon solvents such as cyclohexane, methylcyclohexane, n-pentane, n-hexane, n-heptane, n-octane, n-nonane, and n-decane; Ketone-based solvents such as acetone, methyl ethyl ketone, and cyclohexanone; Ester solvents such as ethyl acetate, butyl acetate, and ethyl cellosolve acetate; Polyhydric acids such as ethylene glycol, ethylene glycol monobutyl ether, ethylene glycol monoethyl ether, ethylene glycol monomethyl ether, dimethoxyethane, propylene glycol, diethoxymethane, triethylene glycol monoethyl ether, glycerin, 1,2-hexanediol, etc. alcohol and its derivatives; Alcohol-based solvents such as methanol, ethanol, propanol, isopropanol, and cyclohexanol; Sulfoxide-based solvents such as dimethyl sulfoxide; and amide-based solvents such as N-methyl-2-pyrrolidone and N,N-dimethylformamide; Benzoate-based solvents such as butyl benzoate and methyl-2-methoxybenzoate; tetralin; Solvents such as 3-phenoxy-toluene may be mentioned. In addition, the above-mentioned solvents may be used individually or two or more types of solvents may be mixed.
또한, 상기 코팅 조성물의 점도는 1 cP 내지 10 cP가 바람직하며, 상기의 범위에서 코팅이 용이하다. 또한, 상기 코팅 조성물 내 본 발명에 따른 화합물의 농도는 0.1 wt/v% 내지 20 wt/v%인 것이 바람직하다. Additionally, the viscosity of the coating composition is preferably 1 cP to 10 cP, and coating is easy within this range. In addition, the concentration of the compound according to the present invention in the coating composition is preferably 0.1 wt/v% to 20 wt/v%.
또한, 본 발명은 상술한 코팅 조성물을 사용하여 기능층을 형성하는 방법을 제공한다. 구체적으로, 상술한 본 발명에 따른 코팅 조성물을 용액 공정으로 코팅하는 단계; 및 상기 코팅된 코팅 조성물을 열처리하는 단계를 포함한다. Additionally, the present invention provides a method of forming a functional layer using the above-described coating composition. Specifically, coating the coating composition according to the present invention described above by a solution process; and heat treating the coated coating composition.
상기 열처리 단계에서 열처리 온도는 150 내지 230℃가 바람직하다. 또한, 상기 열처리 시간은 1분 내지 3시간이고, 보다 바람직하게는 10분 내지 1시간이다. 또한, 상기 열처리는 아르곤, 질소 등의 불활성 기체 분위기에서 수행하는 것이 바람직하다. In the heat treatment step, the heat treatment temperature is preferably 150 to 230°C. Additionally, the heat treatment time is 1 minute to 3 hours, and more preferably 10 minutes to 1 hour. Additionally, the heat treatment is preferably performed in an inert gas atmosphere such as argon or nitrogen.
일례로, 상기 제1 전극은 양극이고, 상기 제2 전극은 음극이거나, 또는 상기 제1 전극은 음극이고, 상기 제2 전극은 양극이다.In one example, the first electrode is an anode and the second electrode is a cathode, or the first electrode is a cathode and the second electrode is an anode.
상기 양극 물질로는 통상 유기물 층으로 정공 주입이 원활할 수 있도록 일함수가 큰 물질이 바람직하다. 상기 양극 물질의 구체적인 예로는 바나듐, 크롬, 구리, 아연, 금과 같은 금속 또는 이들의 합금; 아연 산화물, 인듐 산화물, 인듐주석 산화물(ITO), 인듐아연 산화물(IZO)과 같은 금속 산화물; ZnO:Al 또는 SNO2:Sb와 같은 금속과 산화물의 조합; 폴리(3-메틸티오펜), 폴리[3,4-(에틸렌-1,2-디옥시)티오펜](PEDOT), 폴리피롤 및 폴리아닐린과 같은 전도성 고분자 등이 있으나, 이들에만 한정되는 것은 아니다. The anode material is generally preferably a material with a large work function to facilitate hole injection into the organic layer. Specific examples of the anode material include metals such as vanadium, chromium, copper, zinc, and gold, or alloys thereof; metal oxides such as zinc oxide, indium oxide, indium tin oxide (ITO), and indium zinc oxide (IZO); Combinations of metals and oxides such as ZnO:Al or SNO 2 :Sb; Conductive polymers such as poly(3-methylthiophene), poly[3,4-(ethylene-1,2-dioxy)thiophene](PEDOT), polypyrrole, and polyaniline are included, but are not limited to these.
상기 음극 물질로는 통상 유기물층으로 전자 주입이 용이하도록 일함수가 작은 물질인 것이 바람직하다. 상기 음극 물질의 구체적인 예로는 마그네슘, 칼슘, 나트륨, 칼륨, 티타늄, 인듐, 이트륨, 리튬, 가돌리늄, 알루미늄, 은, 주석 및 납과 같은 금속 또는 이들의 합금; LiF/Al 또는 LiO2/Al과 같은 다층 구조 물질 등이 있으나, 이들에만 한정되는 것은 아니다. The cathode material is generally preferably a material with a small work function to facilitate electron injection into the organic layer. Specific examples of 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; There are multi-layer structure materials such as LiF/Al or LiO 2 /Al, but they are not limited to these.
상기 정공주입층은 전극으로부터 정공을 주입하는 층으로, 정공 주입 물질로는 정공을 수송하는 능력을 가져 양극에서의 정공 주입효과, 발광층 또는 발광재료에 대하여 우수한 정공 주입 효과를 갖고, 발광층에서 생성된 여기자의 전자주입층 또는 전자주입재료에의 이동을 방지하며, 또한, 박막 형성 능력이 우수한 화합물이 바람직하다. 정공 주입 물질의 HOMO(highest occupied molecular orbital)가 양극 물질의 일함수와 주변 유기물 층의 HOMO 사이인 것이 바람직하다. 정공 주입 물질의 구체적인 예로는 금속 포피린(porphyrin), 올리고티오펜, 아릴아민 계열의 유기물, 헥사니트릴헥사아자트리페닐렌 계열의 유기물, 퀴나크리돈(quinacridone)계열의 유기물, 페릴렌(perylene) 계열의 유기물, 안트라퀴논 및 폴리아닐린과 폴리티오펜 계열의 전도성 고분자 등이 있으나, 이들에만 한정 되는 것은 아니다. The hole injection layer is a layer that injects holes from an electrode. The hole injection material has the ability to transport holes, has an excellent hole injection effect at the anode, a light-emitting layer or a light-emitting material, and has an excellent hole injection effect on the light-emitting layer or light-emitting material. A compound that prevents movement of excitons to the electron injection layer or electron injection material and has excellent thin film forming ability is preferred. It is preferable that the highest occupied molecular orbital (HOMO) of the hole injection material is between the work function of the anode material and the HOMO of the surrounding organic material layer. Specific examples of hole injection materials include metal porphyrin, oligothiophene, arylamine-based organic substances, hexanitrilehexaazatriphenylene-based organic substances, quinacridone-based organic substances, and perylene-based organic substances. These include organic materials, anthraquinone, polyaniline, and polythiophene-based conductive polymers, but are not limited to these.
상기 정공수송층은 정공주입층으로부터 정공을 수취하여 발광층까지 정공을 수송하는 층으로, 정공 수송 물질로 양극이나 정공 주입층으로부터 정공을 수송받아 발광층으로 옮겨줄 수 있는 물질로 정공에 대한 이동성이 큰 물질이 적합하다. 구체적인 예로는 아릴아민 계열의 유기물, 전도성 고분자, 및 공액 부분과 비공액 부분이 함께 있는 블록 공중합체 등이 있으나, 이들에만 한정되는 것은 아니다. The hole transport layer is a layer that receives holes from the hole injection layer and transports holes to the light-emitting layer. It is a hole transport material that can receive holes from the anode or hole injection layer and transfer them to the light-emitting layer, and is a material with high mobility for holes. This is suitable. Specific examples include arylamine-based organic materials, conductive polymers, and block copolymers with both conjugated and non-conjugated portions, but are not limited to these.
상기 발광 물질로는 정공 수송층과 전자 수송층으로부터 정공과 전자를 각각 수송받아 결합시킴으로써 가시광선 영역의 빛을 낼 수 있는 물질로서, 형광이나 인광에 대한 양자 효율이 좋은 물질이 바람직하다. 구체적인 예로 8-히드록시-퀴놀린 알루미늄 착물(Alq3); 카르바졸 계열 화합물; 이량체화 스티릴(dimerized styryl) 화합물; BAlq; 10-히드록시벤조 퀴놀린-금속 화합물; 벤족사졸, 벤즈티아졸 및 벤즈이미다졸 계열의 화합물; 폴리(p-페닐렌비닐렌)(PPV) 계열의 고분자; 스피로(spiro) 화합물; 폴리플루오렌, 루브렌 등이 있으나, 이들에만 한정되는 것은 아니다. The light-emitting material is a material capable of emitting light in the visible range by receiving and combining holes and electrons from the hole transport layer and the electron transport layer, respectively, and is preferably a material with good quantum efficiency for fluorescence or phosphorescence. Specific examples include 8-hydroxy-quinoline aluminum complex (Alq 3 ); Carbazole-based compounds; dimerized styryl compounds; BAlq; 10-hydroxybenzoquinoline-metal compound; Compounds of the benzoxazole, benzthiazole and benzimidazole series; Poly(p-phenylenevinylene) (PPV) series polymer; Spiro compounds; Polyfluorene, rubrene, etc., but are not limited to these.
상기 발광층은 호스트 재료 및 도펀트 재료를 포함할 수 있다. 호스트 재료는 축합 방향족환 유도체 또는 헤테로환 함유 화합물 등이 있다. 구체적으로 축합 방향족환 유도체로는 안트라센 유도체, 피렌 유도체, 나프탈렌 유도체, 펜타센 유도체, 페난트렌 화합물, 플루오란텐 화합물 등이 있고, 헤테로환 함유 화합물로는 카바졸 유도체, 디벤조퓨란 유도체, 래더형 퓨란 화합물, 피리미딘 유도체 등이 있으나, 이에 한정되지 않는다. 바람직하게는, 상기 호스트 재료로서 본 발명에 따른 화합물을 사용한다. The light emitting layer may include a host material and a dopant material. Host materials include condensed aromatic ring derivatives or heterocyclic ring-containing compounds. Specifically, condensed aromatic ring derivatives include anthracene derivatives, pyrene derivatives, naphthalene derivatives, pentacene derivatives, phenanthrene compounds, and fluoranthene compounds, and heterocycle-containing compounds include carbazole derivatives, dibenzofuran derivatives, and ladder-type compounds. These include, but are not limited to, furan compounds and pyrimidine derivatives. Preferably, a compound according to the present invention is used as the host material.
도펀트 재료로는 방향족 아민 유도체, 스트릴아민 화합물, 붕소 착체, 플루오란텐 화합물, 금속 착체 등이 있다. 구체적으로 방향족 아민 유도체로는 치환 또는 비치환된 아릴아미노기를 갖는 축합 방향족환 유도체로서, 아릴아미노기를 갖는 피렌, 안트라센, 크리센, 페리플란텐 등이 있으며, 스티릴아민 화합물로는 치환 또는 비치환된 아릴아민에 적어도 1개의 아릴비닐기가 치환되어 있는 화합물로, 아릴기, 실릴기, 알킬기, 사이클로알킬기 및 아릴아미노기로 이루어진 군에서 1 또는 2 이상 선택되는 치환기가 치환 또는 비치환된다. 구체적으로 스티릴아민, 스티릴디아민, 스티릴트리아민, 스티릴테트라아민 등이 있으나, 이에 한정되지 않는다. 또한, 금속 착체로는 이리듐 착체, 백금 착체 등이 있으나, 이에 한정되지 않는다.Dopant materials include aromatic amine derivatives, strylamine compounds, boron complexes, fluoranthene compounds, and metal complexes. Specifically, aromatic amine derivatives include condensed aromatic ring derivatives having a substituted or unsubstituted arylamino group, such as pyrene, anthracene, chrysene, and periplanthene, and styrylamine compounds include substituted or unsubstituted arylamino groups. It is a compound in which at least one arylvinyl group is substituted on the arylamine, and is substituted or unsubstituted with one or two or more substituents selected from the group consisting of aryl group, silyl group, alkyl group, cycloalkyl group, and arylamino group. Specifically, styrylamine, styryldiamine, styryltriamine, styryltetraamine, etc. are included, but are not limited thereto. Additionally, metal complexes include, but are not limited to, iridium complexes and platinum complexes.
상기 전자수송층은 전자주입층으로부터 전자를 수취하여 발광층까지 전자를 수송하는 층으로 전자 수송 물질로는 음극으로부터 전자를 잘 주입 받아 발광층으로 옮겨줄 수 있는 물질로서, 전자에 대한 이동성이 큰 물질이 적합하다. 구체적인 예로는 8-히드록시퀴놀린의 Al 착물; Alq3를 포함한 착물; 유기 라디칼 화합물; 히드록시플라본-금속 착물 등이 있으나, 이들에만 한정되는 것은 아니다. 전자 수송층은 종래기술에 따라 사용된 바와 같이 임의의 원하는 캐소드 물질과 함께 사용할 수 있다. 특히, 적절한 캐소드 물질의 예는 낮은 일함수를 가지고 알루미늄층 또는 실버층이 뒤따르는 통상적인 물질이다. 구체적으로 세슘, 바륨, 칼슘, 이테르븀 및 사마륨이고, 각 경우 알루미늄 층 또는 실버층이 뒤따른다.The electron transport layer is a layer that receives electrons from the electron injection layer and transports electrons to the light-emitting layer. The electron transport material is a material that can easily inject electrons from the cathode and transfer them to the light-emitting layer, and a material with high electron mobility is suitable. do. Specific examples include Al complex of 8-hydroxyquinoline; Complex containing Alq 3 ; organic radical compounds; Hydroxyflavone-metal complexes, etc., but are not limited to these. The electron transport layer can be used with any desired cathode material as used according to the prior art. In particular, examples of suitable cathode materials are conventional materials with a low work function followed by an aluminum or silver layer. Specifically, cesium, barium, calcium, ytterbium and samarium, in each case followed by an aluminum layer or a silver layer.
상기 전자주입층은 전극으로부터 전자를 주입하는 층으로, 전자를 수송하는 능력을 갖고, 음극으로부터의 전자 주입 효과, 발광층 또는 발광 재료에 대하여 우수한 전자주입 효과를 가지며, 발광층에서 생성된 여기자의 정공주입층에의 이동을 방지하고, 또한, 박막형성능력이 우수한 화합물이 바람직하다. 구체적으로는 플루오레논, 안트라퀴노다이메탄, 다이페노퀴논, 티오피란 다이옥사이드, 옥사졸, 옥사다이아졸, 트리아졸, 이미다졸, 페릴렌테트라카복실산, 프레오레닐리덴 메탄, 안트론 등과 그들의 유도체, 금속 착체 화합물 및 질소 함유 5원환 유도체 등이 있으나, 이에 한정되지 않는다. The electron injection layer is a layer that injects electrons from the electrode, has the ability to transport electrons, has an excellent electron injection effect from the cathode, a light-emitting layer or a light-emitting material, and hole injection of excitons generated in the light-emitting layer. A compound that prevents movement to the layer and has excellent thin film forming ability is preferred. Specifically, fluorenone, anthraquinodimethane, diphenoquinone, thiopyran dioxide, oxazole, oxadiazole, triazole, imidazole, perylenetetracarboxylic acid, preorenylidene methane, anthrone, etc. and their derivatives, metals. Complex compounds and nitrogen-containing five-membered ring derivatives are included, but are not limited thereto.
상기 금속 착체 화합물로서는 8-하이드록시퀴놀리나토 리튬, 비스(8-하이드록시퀴놀리나토)아연, 비스(8-하이드록시퀴놀리나토)구리, 비스(8-하이드록시퀴놀리나토)망간, 트리스(8-하이드록시퀴놀리나토)알루미늄, 트리스(2-메틸-8-하이드록시퀴놀리나토)알루미늄, 트리스(8-하이드록시퀴놀리나토)갈륨, 비스(10-하이드록시벤조[h]퀴놀리나토)베릴륨, 비스(10-하이드록시벤조[h]퀴놀리나토)아연, 비스(2-메틸-8-퀴놀리나토)클로로갈륨, 비스(2-메틸-8-퀴놀리나토)(o-크레졸라토)갈륨, 비스(2-메틸-8-퀴놀리나토)(1-나프톨라토)알루미늄, 비스(2-메틸-8-퀴놀리나토)(2-나프톨라토)갈륨 등이 있으나, 이에 한정되지 않는다.Examples of the metal complex compounds include 8-hydroxyquinolinato lithium, bis(8-hydroxyquinolinato)zinc, bis(8-hydroxyquinolinato)copper, bis(8-hydroxyquinolinato)manganese, Tris(8-hydroxyquinolinato)aluminum, Tris(2-methyl-8-hydroxyquinolinato)aluminum, Tris(8-hydroxyquinolinato)gallium, bis(10-hydroxybenzo[h] Quinolinato)beryllium, bis(10-hydroxybenzo[h]quinolinato)zinc, bis(2-methyl-8-quinolinato)chlorogallium, bis(2-methyl-8-quinolinato)( o-cresolato) gallium, bis(2-methyl-8-quinolinato)(1-naphtolato) aluminum, bis(2-methyl-8-quinolinato)(2-naphtolato) gallium, etc. It is not limited to this.
본 발명에 따른 유기 발광 소자는 사용되는 재료에 따라 전면 발광형, 후면 발광형 또는 양면 발광형일 수 있다.The organic light emitting device according to the present invention may be a front emitting type, a back emitting type, or a double-sided emitting type depending on the material used.
또한, 상기 화학식 1로 표시되는 화합물은 유기 발광 소자 외에도 유기 태양 전지 또는 유기 트랜지스터에 포함될 수 있다.Additionally, the compound represented by Formula 1 may be included in organic solar cells or organic transistors in addition to organic light-emitting devices.
상기 화학식 1로 표시되는 화합물 및 이를 포함하는 유기 발광 소자의 제조는 이하 실시예에서 구체적으로 설명한다. 그러나 하기 실시예는 본 발명을 예시하기 위한 것이며, 본 발명의 범위가 이들에 의하여 한정되는 것은 아니다.The preparation of the compound represented by Formula 1 and an organic light-emitting device containing the same will be described in detail in the following Examples. However, the following examples are for illustrating the present invention, and the scope of the present invention is not limited thereto.
제조예 1Manufacturing Example 1
화합물 A1(11.2g, 30mmol), 화합물 A2(4.48g, 30mmol), Pd2dba3(1.37g, 1.5mmol), BINAP (2.8g, 4.5mmol), NatBuO (4.32g, 45mmol)을 톨루엔(240ml)에 녹인 후, 80℃에서 15시간 교반 하였다. 실온으로 냉각하고 증류수를 넣은 후 분별깔때기에서 유기층을 분리한 뒤 이를 MgSO4를 이용하여 수분을 제거한 후, 감압하여 용매를 제거했다. 얻어진 물질을 디클로로메탄 헥세인을 사용하여 컬럼크로마토그래피하여 화합물 A3(9.1g, 77%)을 분리 및 정제했다. MS: [M+H]+ = 394Compound A1 (11.2g, 30mmol), Compound A2 (4.48g, 30mmol), Pd 2 dba 3 (1.37g, 1.5mmol), BINAP (2.8g, 4.5mmol), NatBuO (4.32g, 45mmol) were dissolved in toluene (240ml). ) and stirred at 80°C for 15 hours. After cooling to room temperature and adding distilled water, the organic layer was separated in a separatory funnel, moisture was removed using MgSO4, and the solvent was removed under reduced pressure. The obtained material was subjected to column chromatography using dichloromethane hexane to separate and purify Compound A3 (9.1 g, 77%). MS: [M+H]+ = 394
제조예 2Production example 2
화합물 A2 대신에 화합물 A4를 사용한 것을 제외하고, 상기 제조예 1과 동일한 방법으로 화합물 A5를 제조했다. MS: [M+H]+ = 388Compound A5 was prepared in the same manner as Preparation Example 1, except that Compound A4 was used instead of Compound A2. MS: [M+H]+ = 388
제조예 3Production example 3
화합물 A2 대신에 화합물 A6를 사용한 것을 제외하고, 상기 제조예 1과 동일한 방법으로 화합물 A7를 제조했다. MS: [M+H]+ = 366Compound A7 was prepared in the same manner as Preparation Example 1, except that Compound A6 was used instead of Compound A2. MS: [M+H]+ = 366
제조예 4Production example 4
화합물 A3(2g, 5mmol), 화합물 A8(2.85g, 7.5mmol), Pd(PPh3)4(289mg, 0.25mmol) 및 K2CO3(2.07g, 15mmol)을 톨루엔(50ml) 및 증류수(20ml)에 녹인 후, 90℃에서 15시간 교반 하였다. 유기층을 분리한 뒤 이를 MgSO4를 이용하여 수분을 제거한 후, 감압하여 용매를 제거했다. 얻어진 물질을 디클로로메탄 헥세인을 사용하여 컬럼크로마토그래피하여 화합물 B1(1.8g, 55%)을 분리 및 정제했다. MS: [M+H]+ = 650Compound A3 (2g, 5mmol), Compound A8 (2.85g, 7.5mmol), Pd(PPh 3 ) 4 (289mg, 0.25mmol) and K 2 CO 3 (2.07g, 15mmol) were dissolved in toluene (50ml) and distilled water (20ml). ) and stirred at 90°C for 15 hours. After separating the organic layer, moisture was removed using MgSO 4 and the solvent was removed under reduced pressure. The obtained material was subjected to column chromatography using dichloromethane hexane to separate and purify compound B1 (1.8 g, 55%). MS: [M+H]+ = 650
제조예 5Production example 5
화합물 A3 대신에 화합물 A5를 사용한 것을 제외하고, 상기 제조예 4과 동일한 방법으로 화합물 B2를 제조했다. MS: [M+H]+ = 644Compound B2 was prepared in the same manner as Preparation Example 4, except that Compound A5 was used instead of Compound A3. MS: [M+H]+ = 644
제조예 6Production example 6
화합물 A3 대신에 화합물 A7를 사용한 것을 제외하고, 상기 제조예 4과 동일한 방법으로 화합물 B3를 제조했다. MS: [M+H]+ = 622Compound B3 was prepared in the same manner as Preparation Example 4, except that Compound A7 was used instead of Compound A3. MS: [M+H]+ = 622
실시예 1Example 1
화합물 C1(1g, 2.25mmol), 화합물 B1(3.22g, 4.95mmol), Pd2(dba)3 (110mg, 0.12mmol), P(tBu)3 (73mg, 0.36mmol)및 NatBuO (0.71g, 7.43mmol)을 톨루엔(25ml)에 녹인 후, 100℃에서 15시간 교반 하였다. 실온으로 냉각하고 증류수를 넣은 후 분별깔때기에서 유기층을 분리한 뒤 이를 MgSO4를 이용하여 수분을 제거한 후, 감압하여 용매를 제거했다. 얻어진 물질을 디클로로메탄 헥세인을 사용하여 컬럼크로마토그래피하여 화합물 1-1(1.9g, 53%)을 분리 및 정제했다. MS: [M+H]+ = 1582Compound C1 (1 g, 2.25 mmol), Compound B1 (3.22 g, 4.95 mmol), Pd 2 (dba) 3 (110 mg, 0.12 mmol), P(tBu) 3 (73 mg, 0.36 mmol) and NatBuO (0.71 g, 7.43 mmol) mmol) was dissolved in toluene (25ml) and stirred at 100°C for 15 hours. After cooling to room temperature and adding distilled water, the organic layer was separated in a separatory funnel, moisture was removed using MgSO 4 , and the solvent was removed under reduced pressure. The obtained material was subjected to column chromatography using dichloromethane hexane to separate and purify Compound 1-1 (1.9 g, 53%). MS: [M+H]+ = 1582
실시예 2Example 2
화합물 B1 대신에 화합물 B2를 사용한 것을 제외하고, 상기 실시예 1과 동일한 방법으로 화합물 1-2를 제조했다. MS: [M+H]+ = 1570Compound 1-2 was prepared in the same manner as Example 1, except that Compound B2 was used instead of Compound B1. MS: [M+H]+ = 1570
실시예 3Example 3
화합물 B1 대신에 화합물 B3를 사용한 것을 제외하고, 상기 실시예 1과 동일한 방법으로 화합물 1-3를 제조했다. MS: [M+H]+ = 1526Compound 1-3 was prepared in the same manner as Example 1, except that Compound B3 was used instead of Compound B1. MS: [M+H]+ = 1526
실시예 4Example 4
9-브로모-10-(나프탈렌-1-일)안트라센 (1.92g, 5mmol), ((3-(나프탈렌-2-일)페닐)보로닉산 (1.86g, 7.5mmol), Pd(PPh3)4(0.58g, 0.5mmol) 및 K2CO3(2.07g, 15mmol)을 톨루엔(60ml) 및 증류수(20ml)에 녹인 후, 90℃에서 15시간 교반 하였다. 유기층을 분리한 뒤 이를 MgSO4를 이용하여 수분을 제거한 후, 감압하여 용매를 제거했다. 얻어진 물질을 디클로로메탄 헥세인을 사용하여 컬럼크로마토그래피하여 화합물 2-1을 분리 및 정제했다. MS: [M+H]+ = 5079-Bromo-10-(naphthalen-1-yl)anthracene (1.92g, 5mmol), ((3-(naphthalen-2-yl)phenyl)boronic acid (1.86g, 7.5mmol), Pd(PPh 3 ) 4 (0.58g, 0.5mmol) and K 2 CO 3 (2.07g, 15mmol) were dissolved in toluene (60ml) and distilled water (20ml) and stirred for 15 hours at 90° C. The organic layer was separated and mixed with MgSO 4 After removing moisture, the solvent was removed under reduced pressure. The obtained material was subjected to column chromatography using dichloromethane hexane to separate and purify Compound 2-1. MS: [M+H]+ = 507
실시예 5Example 5
9-브로모-10-(나프탈렌-1-일)안트라센 대신에 9-(4-브로모페닐)-10-(나프탈렌-1-일)안트라센 (2.3g, 5mmol)을 사용한 것을 제외하고, 상기 실시예 7과 동일한 방법으로 화합물 2-2를 제조했다. MS: [M+H]+ = 583The above, except that 9-(4-bromophenyl)-10-(naphthalen-1-yl)anthracene (2.3g, 5mmol) was used instead of 9-bromo-10-(naphthalen-1-yl)anthracene. Compound 2-2 was prepared in the same manner as Example 7. MS: [M+H]+ = 583
[실험예 1][Experimental Example 1]
ITO(indium tin oxide)가 50 nm의 두께로 박막 코팅된 유리 기판을 세제를 녹인 증류수에 넣고 초음파로 세척하였다. 이 때, 세제로는 피셔사(Fischer Co.) 제품을 사용하였으며, 증류수로는 밀러포어사(Millipore Co.) 제품의 필터(Filter)로 2차로 걸러진 증류수를 사용하였다. ITO를 30분간 세척한 후 증류수로 2회 반복하여 초음파 세척을 10분간 진행하였다. 증류수 세척이 끝난 후, 이소프로필알콜, 아세톤, 메탄올의 용제로 초음파 세척을 하고 건조시킨 후 플라즈마 세정기로 수송시켰다. 또한, 산소 플라즈마를 이용하여 상기 기판을 5분간 세정한 후 진공 증착기로 기판을 수송시켰다. A glass substrate coated with a thin film of indium tin oxide (ITO) to a thickness of 50 nm was placed in distilled water with a detergent dissolved in it and washed ultrasonically. At this time, a detergent from Fischer Co. was used, and distilled water filtered secondarily using a filter from Millipore Co. was used as distilled water. After washing the ITO for 30 minutes, ultrasonic cleaning was repeated twice with distilled water for 10 minutes. After washing with distilled water, it was ultrasonic washed with solvents of isopropyl alcohol, acetone, and methanol, dried, and then transported to a plasma cleaner. Additionally, the substrate was cleaned for 5 minutes using oxygen plasma and then transported to a vacuum evaporator.
이렇게 준비된 ITO 투명 전극 위에 상기 ITO 투명 전극 위에 열경화성 아릴아민과 아릴아이오도늄의 비율을 중량비 8:2로 혼합한 조성물을 스핀 코팅하고 질소 분위기 하에 핫 플레이트에서 220 ℃, 30 분 조건으로 경화시켜 정공주입층을 형성하였다. 상기 정공주입층 위에 트리아릴아민중합체의 용액을 스핀코팅하고 베이킹하여 정공수송층을 형성하였다. 상기 정공수송층위에 위에 앞서 화합물 2-1과 화합물 1-1을 95:5의 중량부로 2wt% 톨루엔 용액을 제조하여 5000rpm 스핀 코팅하고, 80℃에서 2분 베이킹(baking)하고, 120℃에서 30분 베이킹(baking)하여 발광층을 형성하였다. 이것을 질소 가스 분위기하 130 ℃에서 10분간 건조시킨 후, 리튬플로라이드(LiF)를 약 1 nm의 막 두께로 증착하고, 마지막으로 알루미늄을 100 nm의 막두께로 증착하여 음극을 형성하였다. 상기 과정에서 음극의 리튬플로라이드는 0.3Å/sec, 알루미늄은 2Å/sec의증착 속도를 유지하였으며, 증착시 진공도는 2 ⅹ10-7~ 5 ⅹ10-6 torr를 유지하여, 유기발광 소자를 제작하였다.A composition of thermosetting arylamine and aryliodonium mixed at a weight ratio of 8:2 was spin-coated on the ITO transparent electrode prepared in this way and cured at 220°C for 30 minutes on a hot plate under a nitrogen atmosphere to form holes. An injection layer was formed. A solution of triarylamine polymer was spin-coated and baked on the hole injection layer to form a hole transport layer. On the hole transport layer, a 2 wt% toluene solution of Compound 2-1 and Compound 1-1 was prepared at a weight ratio of 95:5 and spin coated at 5000 rpm, baked at 80°C for 2 minutes, and baked at 120°C for 30 minutes. A light emitting layer was formed by baking. After drying this at 130°C for 10 minutes in a nitrogen gas atmosphere, lithium fluoride (LiF) was deposited to a film thickness of approximately 1 nm, and finally aluminum was deposited to a film thickness of 100 nm to form a cathode. In the above process, the deposition rate of 0.3 Å/sec for lithium fluoride of the cathode and 2 Å/sec for aluminum was maintained, and the vacuum degree during deposition was maintained at 2 x 10 -7 to 5 x 10 -6 torr to produce an organic light-emitting device. .
소자구조: ITO(50nm)/ HIL(40nm)/ HTL(20nm)/ EML(55nm)/ LiF(1nm)/ Al(100 nm)Device structure: ITO (50 nm)/ HIL (40 nm)/ HTL (20 nm)/ EML (55 nm)/ LiF (1 nm)/ Al (100 nm)
[실험예 2 내지 6][Experimental Examples 2 to 6]
발광층의 제조에 사용한 화합물을 하기 표 1과 같이 변경한 것을 제외하고는, 실험예 1과 동일한 방법으로 유기 발광 소자를 제조하였다.An organic light-emitting device was manufactured in the same manner as in Experimental Example 1, except that the compound used to prepare the light-emitting layer was changed as shown in Table 1 below.
[비교실험예 1 내지 2][Comparative Experiment Examples 1 to 2]
발광층의 제조에 사용한 화합물을 하기 표 1과 같이 변경한 것을 제외하고는, 실험예 1과 동일한 방법으로 유기 발광 소자를 제조하였다.An organic light-emitting device was manufactured in the same manner as in Experimental Example 1, except that the compound used to prepare the light-emitting layer was changed as shown in Table 1 below.
BD의 구조는 하기와 같다.The structure of BD is as follows.
상기 실험예 1 내지 6 및 비교실험예 1 내지 2에서 제조된 유기 발광 소자를 10mA/cm2 전류밀도에서 구동전압, 전류효율 및 양자효율값을 측정하였고, 10mA/cm2 의 전류밀도에서 초기 휘도 대비 85%가 되는 시간을 측정하여, 그 결과를 하기 표 1에 나타내었다.The driving voltage, current efficiency, and quantum efficiency values of the organic light-emitting devices manufactured in Experimental Examples 1 to 6 and Comparative Experimental Examples 1 to 2 were measured at a current density of 10 mA/cm 2 , and the initial luminance was measured at a current density of 10 mA/cm 2 The time to reach 85% of the comparison was measured, and the results are shown in Table 1 below.
(V)Voltage
(V)
(lm/W)power efficiency
(lm/W)
(cd/A)Luminous efficiency
(cd/A)
(%)quantum efficiency
(%)
(hr)life span
(hr)
상기 표 1에 나타난 바와 같이, 본 발명의 화학식 1로 표시되는 화합물을 발광층의 도펀트로 사용한 유기 발광 소자는 수명 측면에서 우수한 특성을 보임을 확인할 수 있었다.As shown in Table 1, it was confirmed that the organic light-emitting device using the compound represented by Formula 1 of the present invention as a dopant in the light-emitting layer showed excellent characteristics in terms of lifespan.
1: 기판 2: 양극
3: 발광층 4: 음극
5: 정공주입층 6: 정공수송층
7: 발광층 8: 전자수송층1: Substrate 2: Anode
3: light emitting layer 4: cathode
5: hole injection layer 6: hole transport layer
7: light emitting layer 8: electron transport layer
Claims (13)
[화학식 1]
상기 화학식 1에서,
R은 Si(R1)(R2)(R3)이고,
R1 내지 R3은 각각 독립적으로 C1-5 알킬; 트리메틸실릴-에틸렌; 메틸 또는 t-부틸이 치환 또는 비치환된 페닐이거나, 또는 R1 및 R2가 결합하여 사이클로펜틸; 사이클로헥실; 또는 2,3-다이하이드로-1H-인데닐 고리를 형성하며, 단 R1 내지 R3 중 적어도 하나는 메틸 또는 t-부틸이 치환 또는 비치환된 페닐이고,
L1은 단일결합; 페닐렌; 또는 나프탈렌디일이고,
m 및 n은 각각 독립적으로 0 내지 4의 정수이고,
R4 및 R5는 각각 독립적으로 수소; 중수소; 할로겐; 시아노; C1-60 알킬; C1-60 알콕시; C1-60 티오알킬; C3-60 사이클로알킬; C6-60 아릴; 또는 N, O 및 S로 구성되는 군으로부터 선택되는 헤테로원자를 1개 이상 포함하는 C5-60 헤테로아릴이고,
Ar1은 중수소, C1-10 알킬 또는 트리(C1-5 알킬)실릴이 치환 또는 비치환된 C6-60 아릴; 또는 N, O 및 S로 구성되는 군으로부터 선택되는 헤테로원자를 1개 이상 포함하는 C5-60 헤테로아릴이다.
Compound represented by Formula 1:
[Formula 1]
In Formula 1,
R is Si(R 1 )(R 2 )(R 3 ),
R 1 to R 3 are each independently C 1-5 alkyl; trimethylsilyl-ethylene; methyl or t-butyl is substituted or unsubstituted phenyl, or R 1 and R 2 are combined to form cyclopentyl; cyclohexyl; or forms a 2,3-dihydro-1H-indenyl ring, provided that at least one of R 1 to R 3 is phenyl substituted or unsubstituted with methyl or t-butyl,
L 1 is a single bond; phenylene; or naphthalenediyl,
m and n are each independently integers from 0 to 4,
R 4 and R 5 are each independently hydrogen; heavy hydrogen; halogen; cyano; C 1-60 alkyl; C 1-60 alkoxy; C 1-60 thioalkyl; C 3-60 cycloalkyl; C 6-60 aryl; or C 5-60 heteroaryl containing one or more heteroatoms selected from the group consisting of N, O and S,
Ar 1 is deuterium, C 6-60 aryl substituted or unsubstituted with C 1-10 alkyl or tri(C 1-5 alkyl)silyl; or C 5-60 heteroaryl containing one or more heteroatoms selected from the group consisting of N, O and S.
R1 내지 R3는 모두 메틸 또는 t-부틸이 치환 또는 비치환된 페닐인, 화합물.
According to paragraph 1,
A compound in which R 1 to R 3 are all phenyl substituted or unsubstituted with methyl or t-butyl.
R4 및 R5는 각각 독립적으로 수소; 또는 C1-10 알킬인, 화합물.
According to paragraph 1,
R 4 and R 5 are each independently hydrogen; or C 1-10 alkyl, a compound.
Ar1은 중수소가 치환된 페닐; C1-10 알킬이 치환된 페닐; 트리(C1-5 알킬)실릴이 치환된 페닐; 비치환된 페닐; 또는 나프틸인, 화합물.
According to paragraph 1,
Ar 1 is phenyl substituted with deuterium; C 1-10 alkyl substituted phenyl; phenyl substituted with tri(C 1-5 alkyl)silyl; unsubstituted phenyl; or naphthyl, a compound.
상기 화학식 1로 표시되는 화합물은 하기로 구성되는 군으로부터 선택되는 어느 하나인, 화합물:
According to paragraph 1,
The compound represented by Formula 1 is any one selected from the group consisting of:
first electrode; a second electrode provided opposite to the first electrode; And an organic light-emitting device comprising at least one organic material layer provided between the first electrode and the second electrode, wherein at least one layer of the organic material layer is according to any one of claims 1 and 4 to 7. An organic light-emitting device comprising the following compounds.
상기 화합물을 포함하는 유기물층은 발광층인, 유기 발광 소자.
According to clause 8,
An organic light-emitting device, wherein the organic material layer containing the compound is a light-emitting layer.
상기 발광층은 하기 화학식 2의 화합물을 더 포함하는, 유기 발광 소자:
[화학식 2]
상기 화학식 2에 있어서,
L2는 단일 결합; 또는 C6-60 아릴렌이고,
Ar2 및 Ar3은 각각 독립적으로 중수소, C1-10 알킬 또는 페닐기가 치환 또는 비치환된 C6-60 아릴; 또는 N, O 및 S로 구성되는 군으로부터 선택되는 헤테로원자를 1개 이상 포함하는 C5-60 헤테로아릴이다.
According to clause 9,
An organic light-emitting device wherein the light-emitting layer further includes a compound of the following formula (2):
[Formula 2]
In Formula 2,
L 2 is a single bond; or C 6-60 arylene,
Ar 2 and Ar 3 are each independently C 6-60 aryl with or without a substituted or unsubstituted deuterium, C 1-10 alkyl, or phenyl group; or C 5-60 heteroaryl containing one or more heteroatoms selected from the group consisting of N, O and S.
L2는 단일결합; 또는 페닐렌인, 유기 발광 소자.
According to clause 10,
L 2 is a single bond; or phenylene, an organic light-emitting device.
Ar2 및 Ar3은 각각 독립적으로 하기로 구성되는 군으로부터 선택되는 어느 하나인, 유기 발광 소자:
According to clause 10,
Ar 2 and Ar 3 are each independently any one selected from the group consisting of:
상기 화학식 2로 표시되는 화합물은 하기로 구성되는 군으로부터 선택되는 어느 하나인, 유기 발광 소자:
An organic light-emitting device in which the compound represented by Formula 2 is any one selected from the group consisting of:
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| EP2423206B1 (en) * | 2009-04-24 | 2014-01-08 | Idemitsu Kosan Co., Ltd. | Aromatic amine derivative, and organic electroluminescent element comprising same |
| KR20150014778A (en) * | 2013-07-30 | 2015-02-09 | 삼성디스플레이 주식회사 | Oganic light emitting device |
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