WO2021045470A1 - Novel compound and organic light emitting device comprising same - Google Patents
Novel compound and organic light emitting device comprising same Download PDFInfo
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- WO2021045470A1 WO2021045470A1 PCT/KR2020/011677 KR2020011677W WO2021045470A1 WO 2021045470 A1 WO2021045470 A1 WO 2021045470A1 KR 2020011677 W KR2020011677 W KR 2020011677W WO 2021045470 A1 WO2021045470 A1 WO 2021045470A1
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- 150000001875 compounds Chemical class 0.000 title claims abstract description 64
- -1 biphenylyl Chemical group 0.000 claims description 58
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- 239000011368 organic material Substances 0.000 claims description 22
- 125000000217 alkyl group Chemical group 0.000 claims description 17
- 125000001424 substituent group Chemical group 0.000 claims description 16
- 229910052739 hydrogen Inorganic materials 0.000 claims description 14
- 239000001257 hydrogen Substances 0.000 claims description 14
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- 238000000034 method Methods 0.000 claims description 12
- 125000003342 alkenyl group Chemical group 0.000 claims description 11
- 125000000753 cycloalkyl group Chemical group 0.000 claims description 11
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 10
- YZCKVEUIGOORGS-OUBTZVSYSA-N Deuterium Chemical compound [2H] YZCKVEUIGOORGS-OUBTZVSYSA-N 0.000 claims description 9
- 125000001181 organosilyl group Chemical group [SiH3]* 0.000 claims description 8
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 7
- 229910052717 sulfur Inorganic materials 0.000 claims description 7
- 125000006819 (C2-60) heteroaryl group Chemical group 0.000 claims description 6
- 125000005842 heteroatom Chemical group 0.000 claims description 6
- 150000002431 hydrogen Chemical class 0.000 claims description 6
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- 125000000304 alkynyl group Chemical group 0.000 claims description 4
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- MYKQKWIPLZEVOW-UHFFFAOYSA-N 11h-benzo[a]carbazole Chemical group C1=CC2=CC=CC=C2C2=C1C1=CC=CC=C1N2 MYKQKWIPLZEVOW-UHFFFAOYSA-N 0.000 description 2
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- 239000010405 anode material Substances 0.000 description 2
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 2
- 239000012300 argon atmosphere Substances 0.000 description 2
- 125000005264 aryl amine group Chemical group 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 0 c(cc1)cc*1-c(cc1)ccc1-c1nc(-[n](c(cc2)c34)c(ccc5ccc6)c3c5c6-c3cccc5c3c4c2[o]5)nc2c1c(cccc1)c1[s]2 Chemical compound c(cc1)cc*1-c(cc1)ccc1-c1nc(-[n](c(cc2)c34)c(ccc5ccc6)c3c5c6-c3cccc5c3c4c2[o]5)nc2c1c(cccc1)c1[s]2 0.000 description 2
- YJZJXBXTRCANRD-UHFFFAOYSA-N c1cc([o]c(cc2)c3c4c2[nH]c2c4c4c-5cccc4cc2)c3c-5c1 Chemical compound c1cc([o]c(cc2)c3c4c2[nH]c2c4c4c-5cccc4cc2)c3c-5c1 YJZJXBXTRCANRD-UHFFFAOYSA-N 0.000 description 2
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- 125000000609 carbazolyl group Chemical group C1(=CC=CC=2C3=CC=CC=C3NC12)* 0.000 description 2
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- 238000002474 experimental method Methods 0.000 description 2
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- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 description 2
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- AICOOMRHRUFYCM-ZRRPKQBOSA-N oxazine, 1 Chemical compound C([C@@H]1[C@H](C(C[C@]2(C)[C@@H]([C@H](C)N(C)C)[C@H](O)C[C@]21C)=O)CC1=CC2)C[C@H]1[C@@]1(C)[C@H]2N=C(C(C)C)OC1 AICOOMRHRUFYCM-ZRRPKQBOSA-N 0.000 description 2
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- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 description 2
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- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 2
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- MFRIHAYPQRLWNB-UHFFFAOYSA-N sodium tert-butoxide Chemical compound [Na+].CC(C)(C)[O-] MFRIHAYPQRLWNB-UHFFFAOYSA-N 0.000 description 2
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- UWRZIZXBOLBCON-VOTSOKGWSA-N (e)-2-phenylethenamine Chemical compound N\C=C\C1=CC=CC=C1 UWRZIZXBOLBCON-VOTSOKGWSA-N 0.000 description 1
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- 125000006024 2-pentenyl group Chemical group 0.000 description 1
- 125000003903 2-propenyl group Chemical group [H]C([*])([H])C([H])=C([H])[H] 0.000 description 1
- DMEVMYSQZPJFOK-UHFFFAOYSA-N 3,4,5,6,9,10-hexazatetracyclo[12.4.0.02,7.08,13]octadeca-1(18),2(7),3,5,8(13),9,11,14,16-nonaene Chemical group N1=NN=C2C3=CC=CC=C3C3=CC=NN=C3C2=N1 DMEVMYSQZPJFOK-UHFFFAOYSA-N 0.000 description 1
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- DDTHMESPCBONDT-UHFFFAOYSA-N 4-(4-oxocyclohexa-2,5-dien-1-ylidene)cyclohexa-2,5-dien-1-one Chemical compound C1=CC(=O)C=CC1=C1C=CC(=O)C=C1 DDTHMESPCBONDT-UHFFFAOYSA-N 0.000 description 1
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- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
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- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
- 125000004434 sulfur atom Chemical group 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
- JLBRGNFGBDNNSF-UHFFFAOYSA-N tert-butyl(dimethyl)borane Chemical group CB(C)C(C)(C)C JLBRGNFGBDNNSF-UHFFFAOYSA-N 0.000 description 1
- 125000001113 thiadiazolyl group Chemical group 0.000 description 1
- 229930192474 thiophene Natural products 0.000 description 1
- IBBLKSWSCDAPIF-UHFFFAOYSA-N thiopyran Chemical compound S1C=CC=C=C1 IBBLKSWSCDAPIF-UHFFFAOYSA-N 0.000 description 1
- 229910052718 tin Inorganic materials 0.000 description 1
- 239000011135 tin Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 238000012546 transfer Methods 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
- 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
- LENZDBCJOHFCAS-UHFFFAOYSA-N tris Chemical compound OCC(N)(CO)CO LENZDBCJOHFCAS-UHFFFAOYSA-N 0.000 description 1
- 238000004506 ultrasonic cleaning Methods 0.000 description 1
- 238000007738 vacuum evaporation 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
- 125000001834 xanthenyl group Chemical group C1=CC=CC=2OC3=CC=CC=C3C(C12)* 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
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Definitions
- the present invention relates to a novel compound and an organic light emitting device comprising the same.
- the organic light emission phenomenon refers to a phenomenon in which electrical energy is converted into light energy by using an organic material.
- An organic light-emitting device using the organic light-emitting phenomenon has a wide viewing angle, excellent contrast, and fast response time, and has excellent luminance, driving voltage, and response speed characteristics, and thus many studies are being conducted.
- An organic light-emitting device generally has a structure including an anode and a cathode, and an organic material layer between the anode and the cathode.
- the organic material layer is often made of a multilayer structure made of different materials in order to increase the efficiency and stability of the organic light emitting device.For example, it may be formed of a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer, and the like.
- holes are injected from the anode and electrons from the cathode are injected into the organic material layer, and excitons are formed when the injected holes and electrons meet. When it falls back to the ground, it glows.
- Patent Document 0001 Korean Patent Publication No. 10-2000-0051826
- the present invention relates to a novel compound and an organic light emitting device comprising the same.
- the present invention provides a compound represented by the following formula (1):
- X is O, or S
- Ar is substituted or unsubstituted C 6-60 aryl; Substituted or unsubstituted C 2-60 heteroaryl including any one or more heteroatoms selected from the group consisting of N, O and S,
- R 1 , R 2 , R 3 , and R 4 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 2-60 alkenyl; Substituted or unsubstituted C 2-60 alkynyl; Substituted or unsubstituted C 3-60 cycloalkyl; Substituted or unsubstituted C 6-60 aryl; C 2-60 heteroaryl including any one or more heteroatoms selected from the group consisting of substituted or unsubstituted N, O, and S; Substituted or unsubstituted tri(C 1-60 alkyl)silyl; Or a substituted or unsubstituted tri(C 6-60 aryl)silyl, or two adjacent substituents are bonded to form a C 6-60
- n1 is an integer from 0 to 2
- n2 to n4 are each independently an integer of 0 to 3
- L is any one of the following,
- Y is O, or S
- Each R 5 is independently hydrogen; heavy hydrogen; halogen; Cyano; Substituted or unsubstituted C 1-60 alkyl; Substituted or unsubstituted C 1-60 alkoxy; Substituted or unsubstituted C 2-60 alkenyl; Substituted or unsubstituted C 2-60 alkynyl; Substituted or unsubstituted C 3-60 cycloalkyl; Substituted or unsubstituted C 6-60 aryl; C 2-60 heteroaryl including any one or more heteroatoms selected from the group consisting of substituted or unsubstituted N, O, and S; Substituted or unsubstituted tri(C 1-60 alkyl)silyl; Or a substituted or unsubstituted tri(C 6-60 aryl)silyl, or two adjacent substituents are bonded to form a C 6-60 aromatic ring,
- n5 is an integer from 0 to 4.
- the present invention the first electrode; A second electrode provided to face the first electrode; And one or more organic material layers provided between the first electrode and the second electrode, wherein at least one of the organic material layers comprises a compound represented by Formula 1 to provide.
- the compound represented by Formula 1 may be used as a material for an organic material layer of an organic light-emitting device, and may improve efficiency, low driving voltage, and/or lifetime characteristics in the organic light-emitting device.
- FIG. 1 shows an example of an organic light-emitting device comprising a substrate 1, an anode 2, a light-emitting layer 3, and a cathode 4.
- FIG. 2 is an example of an organic light-emitting device comprising a substrate 1, an anode 2, a hole injection layer 5, a hole transport layer 6, a light-emitting layer 7, an electron injection and transport layer 8, and a cathode 4 Is shown.
- substituted or unsubstituted refers to deuterium; Halogen group; Cyano group; Nitro group; Hydroxy group; Carbonyl group; Ester group; Imide group; Amino group; Phosphine oxide group; Alkoxy group; Aryloxy group; Alkyl thioxy group; Arylthioxy group; Alkyl sulfoxy group; Arylsulfoxy 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 it means substituted or unsubstituted with one or more substituents selected from the group consisting of heteroaryl containing one or more of N, O and S atoms, or substituted or unsubstituted with two or more substituent
- a substituent to which two or more substituents are connected may be a biphenyl group. That is, the biphenyl group may be an aryl group, or may be interpreted as a substituent to which two phenyl groups are connected.
- the number of carbon atoms of the carbonyl group is not particularly limited, but is preferably 1 to 40 carbon atoms. Specifically, it may be a compound having the following structure, but is not limited thereto.
- the ester group may be substituted with a C1-C25 linear, branched or cyclic alkyl group or an aryl group having 6 to 25 carbon atoms in the oxygen of the ester group.
- it may be a compound of the following structural formula, but is not limited thereto.
- the number of carbon atoms of the imide group is not particularly limited, but it is preferably 1 to 25 carbon atoms. Specifically, it may be a compound having the following structure, but is not limited thereto.
- the silyl group is specifically trimethylsilyl group, triethylsilyl group, t-butyldimethylsilyl group, vinyldimethylsilyl group, propyldimethylsilyl group, triphenylsilyl group, diphenylsilyl group, phenylsilyl group, etc. However, it is not limited thereto.
- the boron group specifically includes a trimethyl boron group, a triethyl boron group, a t-butyldimethyl boron group, a triphenyl boron group, a phenyl boron group, and the like, but is not limited thereto.
- examples of the halogen group include fluorine, chlorine, bromine or iodine.
- the alkyl group may be linear or branched, and the number of carbon atoms is not particularly limited, but is preferably 1 to 40. According to an exemplary embodiment, the alkyl group has 1 to 20 carbon atoms. According to another exemplary embodiment, the alkyl group has 1 to 10 carbon atoms. According to another exemplary embodiment, the alkyl group has 1 to 6 carbon atoms.
- alkyl group examples 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, cycloheptylmethyl, octyl, n-octyl, tert-octyl, 1-methylheptyl, 2-ethylhex
- the alkenyl group may be a linear or branched chain, and the number of carbon atoms is not particularly limited, but is preferably 2 to 40. According to an exemplary embodiment, the alkenyl group has 2 to 20 carbon atoms. According to another exemplary embodiment, the alkenyl group has 2 to 10 carbon atoms. According to another exemplary 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, and the like, but are not limited thereto.
- the cycloalkyl group is not particularly limited, but preferably has 3 to 60 carbon atoms, and according to an exemplary embodiment, the cycloalkyl group has 3 to 30 carbon atoms. According to another exemplary embodiment, the cycloalkyl group has 3 to 20 carbon atoms. According to another exemplary embodiment, the cycloalkyl group has 3 to 6 carbon atoms.
- the aryl group is not particularly limited, but is preferably 6 to 60 carbon atoms, and may be a monocyclic aryl group or a polycyclic aryl group. According to an exemplary embodiment, the aryl group has 6 to 30 carbon atoms. According to an exemplary embodiment, the aryl group has 6 to 20 carbon atoms.
- the aryl group may be a monocyclic aryl group such as a phenyl group, a biphenyl group, or a terphenyl group, but is not limited thereto.
- the polycyclic aryl group may be a naphthyl group, an anthracenyl group, a phenanthrenyl group, a pyrenyl group, a perylenyl group, a chrysenyl group, a fluorenyl group, and the like, but is not limited thereto.
- the fluorenyl group may be substituted, and two substituents may be bonded to each other to form a spiro structure.
- the fluorenyl group is substituted, Can be, etc. However, it is not limited thereto.
- heteroaryl is a heteroaryl containing at least one of O, N, Si, and S as a heterogeneous element, and the number of carbon atoms is not particularly limited, but it is preferably 2 to 60 carbon atoms.
- heteroaryl include xanthene, thioxanthen, thiophene group, furan group, pyrrole group, imidazole group, thiazole group, oxazole group, oxadiazole group, triazole group, pyridyl group, bipyridyl group, Pyrimidyl group, triazine group, acridyl group, pyridazine group, pyrazinyl group, quinolinyl group, quinazoline group, quinoxalinyl group, phthalazinyl group, pyrido pyrimidinyl group, pyrido pyrazinyl group, pyrazino Pyrazinyl group, iso
- the aryl group among the aralkyl group, aralkenyl group, alkylaryl group, arylamine group, and arylsilyl group is the same as the example of the aryl group described above.
- the alkyl group among the aralkyl group, the alkylaryl group and the alkylamine group is the same as the example of the aforementioned alkyl group.
- the heteroaryl among the heteroarylamines may be described above for heteroaryl.
- the alkenyl group of the aralkenyl group is the same as the example of the alkenyl group described above.
- the description of the aryl group described above may be applied except that the arylene is a divalent group.
- the description of the above-described heteroaryl may be applied except that the heteroarylene is a divalent group.
- the hydrocarbon ring is not a monovalent group, and the description of the aryl group or cycloalkyl group described above may be applied except that the hydrocarbon ring is formed by bonding of two substituents.
- the heterocycle is not a monovalent group, and the description of the above-described heteroaryl may be applied except that the heterocycle is formed by bonding of two substituents.
- the present invention provides a compound represented by Chemical Formula 1.
- Ar is phenyl, biphenylyl, terphenylyl, naphthyl, anthracenyl, phenanthrenyl, dimethylfluorenyl, diphenylfluorenyl, dibenzofuranyl, dibenzothio Phenyl, carbazol-9-yl, or 9-phenyl-carbazolyl, wherein Ar is unsubstituted or substituted with one or more deuterium.
- R 1 , R 2 , R 3 and R 4 are hydrogen. At this time, preferably, n1 to n4 are 0.
- one of R 1 , R 2 , R 3 and R 4 is phenyl and the other is hydrogen.
- one of n1 to n4 is 1, and the other is 0.
- two adjacent R 1 , two adjacent R 2 , two adjacent R 3 , or two adjacent R 4 are bonded to each other to form a benzene ring, and the remaining R 1 to R 4 are hydrogen.
- one of n1 to n4 is 2, and the others are 0.
- R 5 is all hydrogen, or R 5 is all deuterium.
- n5 is 0 or 4.
- n5 is 2.
- the present invention provides a method for preparing a compound represented by Formula 1, such as the following Scheme 1 as an example:
- reaction Scheme 1 the definitions other than X'are as previously defined, and X'is halogen, more preferably chloro or bromo.
- the reaction is an amine substitution reaction, and is preferably carried out in the presence of a palladium catalyst and a base, and the reactor for the amine substitution reaction may be changed as known in the art.
- the manufacturing method may be more specific in the manufacturing examples to be described later.
- the present invention provides an organic light-emitting device including the compound represented by Formula 1 above.
- the present invention provides a first electrode; A second electrode provided to face the first electrode; And one or more organic material layers provided between the first electrode and the second electrode, wherein at least one of the organic material layers contains the compound according to the present invention.
- 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.
- 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 material layers, and an anode are sequentially stacked on a substrate.
- FIGS. 1 and 2 the structure of an organic light-emitting device according to an embodiment of the present invention is illustrated in FIGS. 1 and 2.
- FIG. 1 shows an example of an organic light-emitting device comprising a substrate 1, an anode 2, a light-emitting layer 3, and a cathode 4.
- the compound represented by Formula 1 may be included in the emission layer.
- the compound represented by Formula 1 may be included in the hole injection layer, the hole transport layer, or the emission layer.
- the organic light-emitting device according to the present invention can be manufactured by materials and methods known in the art, except for using the compound according to the present invention.
- the organic light emitting device may be manufactured by sequentially laminating an anode, an organic material layer, and a cathode on a substrate.
- the anode is formed by depositing a metal or a conductive metal oxide or an alloy thereof on the substrate.
- a PVD physical vapor deposition
- the organic material layer including a hole injection layer, a hole transport layer, a light emitting layer, and an electron transport layer thereon it can be prepared by depositing a material that can be used as a cathode thereon.
- an organic light emitting device may be manufactured by sequentially depositing an organic material layer and an anode material from a cathode material on a substrate (WO 2003/012890).
- the manufacturing method is not limited thereto.
- the first electrode is an anode
- the second electrode is a cathode
- the first electrode is a cathode
- the second electrode is an anode
- the cathode material a material having a large work function is preferable so that holes can be smoothly injected into the organic material layer.
- the cathode 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 compounds such as poly(3-methylthiophene), poly[3,4-(ethylene-1,2-dioxy)thiophene] (PEDOT), polypyrrole and polyaniline, and the like, but are not limited thereto.
- the cathode material is a material having a small work function to facilitate electron injection into the organic material layer.
- the negative electrode material include metals such as magnesium, calcium, sodium, potassium, titanium, indium, yttrium, lithium, gadolinium, aluminum, silver, tin, and lead, or alloys thereof; There are multi-layered materials such as LiF/Al or LiO 2 /Al, but are not limited thereto.
- the hole injection layer is a layer that injects holes from the electrode, and has the ability to transport holes as a hole injection material, so that it has a hole injection effect at the anode, an excellent hole injection effect for the light emitting layer or the light emitting material, and is generated from the light emitting layer.
- a compound that prevents the movement of excitons to the electron injection layer or the electron injection material and has excellent ability to form a thin film is preferable.
- the HOMO (highest occupied molecular orbital) of the hole injection material is between the work function of the positive electrode material and the HOMO of the surrounding organic material layer.
- hole injection materials include metal porphyrin, oligothiophene, arylamine-based organic substances, hexanitrile hexaazatriphenylene-based organic substances, quinacridone-based organic substances, and perylene-based organic substances.
- the hole transport layer is a layer that receives holes from the hole injection layer and transports holes to the emission layer.
- the hole transport material is a material capable of transporting holes from the anode or the hole injection layer to the emission layer, and has high mobility for holes.
- the material is suitable. Specific examples include an arylamine-based organic material, a conductive compound, and a block copolymer having a conjugated portion and a non-conjugated portion together, but are not limited thereto.
- the emission layer may include a host material and a dopant material.
- Host materials include condensed aromatic ring derivatives or heterocyclic-containing compounds.
- condensed aromatic ring derivatives include anthracene derivatives, pyrene derivatives, naphthalene derivatives, pentacene derivatives, phenanthrene compounds, and fluoranthene compounds
- heterocycle-containing compounds include carbazole derivatives, dibenzofuran derivatives, ladder type Furan compounds, pyrimidine derivatives, and the like, but are not limited thereto.
- Dopant materials include aromatic amine derivatives, strylamine compounds, boron complexes, fluoranthene compounds, and metal complexes.
- the aromatic amine derivative is a condensed aromatic ring derivative having a substituted or unsubstituted arylamino group, and includes pyrene, anthracene, chrysene, periflanthene and the like having an arylamino group
- the styrylamine compound is substituted or unsubstituted
- the aromatic amine derivative is a condensed aromatic ring derivative having a substituted or unsubstituted arylamino group, and includes pyrene, anthracene, chrysene, periflanthene and the like having an arylamino group
- the styrylamine compound is substituted or unsubstituted
- at least one arylvinyl group is substituted on the arylamine, one or two or more substituents selected from
- styrylamine styryldiamine
- styryltriamine examples of the metal complex
- styryltetraamine examples of the metal complex include, but are not limited to, an iridium complex and a platinum complex.
- the electron transport layer is a layer that receives electrons from the electron injection layer and transports electrons to the emission layer.
- an electron transport material a material capable of injecting electrons from the cathode and transferring them to the emission layer, and a material having high mobility for electrons is suitable. Do. Specific examples include Al complex of 8-hydroxyquinoline; Complexes containing Alq 3; Organic radical compounds; Hydroxyflavone-metal complexes, and the like, but are not limited thereto.
- the electron transport layer can be used with any desired cathode material as used according to the prior art.
- suitable cathode materials are conventional materials that have a low work function and are followed by an aluminum layer or a silver layer. Specifically, they are cesium, barium, calcium, ytterbium and samarium, and in each case an aluminum layer or a silver layer follows.
- the electron injection layer is a layer that injects electrons from the electrode, has the ability to transport electrons, has an electron injection effect from the cathode, an excellent electron injection effect for the light emitting layer or the light emitting material, and hole injection of excitons generated in the light emitting layer
- a compound that prevents migration to the layer and is excellent in thin film forming ability is preferable.
- Complex compounds and nitrogen-containing 5-membered ring derivatives but are not limited thereto.
- Examples of the metal complex compound 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-naphtholato)aluminum, bis(2-methyl-8-quinolinato)(2-naphtholato)gallium, etc. It is not limited to this.
- the organic light-emitting device according to the present invention may be a top emission type, a bottom emission type, or a double-sided emission type depending on the material used.
- the compound according to the present invention may be included in an organic solar cell or an organic transistor in addition to the organic light emitting device.
- Compound 2 was prepared in the same manner as in the preparation method of compound 1, except that intermediate b was used instead of intermediate a.
- Compound 3 was prepared in the same manner as in the preparation method of compound 1, except that the intermediate c was used instead of the intermediate a.
- Compound 4 was prepared in the same manner as in the preparation method of compound 1, except that the intermediate d was used instead of the intermediate a.
- Compound 5 was prepared in the same manner as in the preparation method of compound 1, except that the intermediate e was used instead of the intermediate a.
- Compound 6 was prepared in the same manner as in the preparation method of compound 1, except that the intermediate B was used instead of the intermediate A and the intermediate f was used instead of the intermediate a.
- Compound 7 was prepared in the same manner as in the preparation method of compound 1, except that intermediate B was used instead of intermediate A and intermediate g was used instead of intermediate a.
- Compound 8 was prepared in the same manner as in the preparation method of compound 1, except that intermediate B was used instead of intermediate A and intermediate h was used instead of intermediate a.
- a glass substrate coated with a thin film of ITO (Indium Tin Oxide) to a thickness of 1,400 ⁇ was put in distilled water dissolved in a detergent and washed with ultrasonic waves.
- ITO Indium Tin Oxide
- Fischer Co. product was used as a detergent
- distilled water secondarily filtered with a filter made by Millipore Co. was used as distilled water.
- ultrasonic washing was performed with a solvent of isopropyl alcohol, acetone, and methanol, dried, and then transported to a plasma cleaner.
- the substrate was transported to a vacuum evaporator.
- the following HI-A compound and the following HAT-CN compound were sequentially thermally vacuum deposited to a thickness of 800 ⁇ and 50 ⁇ , respectively, to form a hole injection layer.
- the following HT-A compound was vacuum-deposited to a thickness of 800 ⁇ to form a hole transport layer, followed by thermal vacuum evaporation of the following EB-A compound to a thickness of 600 ⁇ to form an electron blocking layer.
- the compound 1 prepared above and the following RD compound were vacuum-deposited to a thickness of 400 ⁇ at a weight ratio of 98:2 to form a light emitting layer.
- the following ET-A compound and the following Liq compound were thermally vacuum deposited to a thickness of 360 ⁇ at a weight ratio of 1:1 to form an electron transport layer, and then the following Liq compound was vacuum deposited to a thickness of 5 ⁇ to form an electron injection layer. Formed.
- An organic light-emitting device was manufactured by sequentially depositing magnesium and silver on the electron injection layer to a thickness of 220 ⁇ at a weight ratio of 10:1 and aluminum to a thickness of 1000 ⁇ to form a cathode.
- the deposition rate of the organic material was maintained at 0.4 ⁇ 0.7 ⁇ /sec, and the vacuum degree during deposition was maintained at 2X10 -7 ⁇ 5X10 -6 torr, thereby fabricating an organic light-emitting device.
- An organic light-emitting device was manufactured in the same manner as in Experimental Example 1, except that the compound shown in Table 1 was used instead of Compound 1.
- RH-A, RH-B and RH-C each mean the following compounds.
- the compound represented by Formula 1 according to the present invention is configured in a form in which a substituent structure serving as an electron acceptor and a parent nucleus structure serving as an electron donor are connected.
- a substituent structure serving as an electron acceptor and a parent nucleus structure serving as an electron donor are connected.
- the two units of completely different properties are directly bonded, they have a small band gap by exchanging charges inside the molecule, which is advantageous for energy transfer to the red dopant and is suitable for use as a host of the red light emitting layer.
- the parental structure serving as an electron donor exhibits high stability by condensing both benzocarbazole and benzofuran or benzothiophene to form a ring.
- the unit serving as an electron acceptor has excellent properties in electron transfer compared to the quinazoline structure applied in the comparative example, and thus exhibits high efficiency characteristics.
- the compounds according to the present invention when applied as a host of the red emission layer of an organic electroluminescent device, they exhibit characteristics of low voltage, high efficiency, and long life, thereby obtaining an optimal device.
- substrate 2 anode
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Abstract
The present invention provides a novel compound and an organic light emitting device comprising same.
Description
관련 출원(들)과의 상호 인용Cross-reference with related application(s)
본 출원은 2019년 9월 5일자 한국 특허 출원 제10-2019-0110309호에 기초한 우선권의 이익을 주장하며, 해당 한국 특허 출원들의 문헌에 개시된 모든 내용은 본 명세서의 일부로서 포함된다.This application claims the benefit of priority based on Korean Patent Application No. 10-2019-0110309 filed on September 5, 2019, and all contents disclosed in the literature of the Korean patent applications are included as part of this specification.
본 발명은 신규한 화합물 및 이를 포함하는 유기 발광 소자에 관한 것이다.The present invention relates to a novel compound and an organic light emitting device comprising the same.
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, the organic light emission phenomenon refers to a phenomenon in which electrical energy is converted into light energy by using an organic material. An organic light-emitting device using the organic light-emitting phenomenon has a wide viewing angle, excellent contrast, and fast response time, and has excellent luminance, driving voltage, and response speed characteristics, and thus many studies are being conducted.
유기 발광 소자는 일반적으로 양극과 음극 및 상기 양극과 음극 사이에 유기물층을 포함하는 구조를 가진다. 상기 유기물층은 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. An organic light-emitting device generally has a structure including an anode and a cathode, and an organic material layer between the anode and the cathode. The organic material layer is often made of a multilayer structure made of different materials in order to increase the efficiency and stability of the organic light emitting device.For example, it may be formed of a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer, and the like. In the structure of such an organic light emitting device, when a voltage is applied between the two electrodes, holes are injected from the anode and electrons from the cathode are injected into the organic material layer, and excitons are formed when the injected holes and electrons meet. When it falls back to the ground, it glows.
상기와 같은 유기 발광 소자에 사용되는 유기물에 대하여 새로운 재료의 개발이 지속적으로 요구되고 있다.Development of new materials for organic materials used in organic light emitting devices as described above is continuously required.
[선행기술문헌][Prior technical literature]
[특허문헌][Patent Literature]
(특허문헌 0001) 한국특허 공개번호 제10-2000-0051826호(Patent Document 0001) Korean Patent Publication No. 10-2000-0051826
본 발명은 신규한 화합물 및 이를 포함하는 유기 발광 소자에 관한 것이다. The present invention relates to a novel compound and an organic light emitting device comprising the same.
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,
X는 O, 또는 S이고,X is O, or S,
Ar은 치환 또는 비치환된 C
6-60 아릴; 치환 또는 비치환된 N, O 및 S로 구성되는 군으로부터 선택되는 어느 하나 이상의 헤테로원자를 포함하는 C
2-60 헤테로아릴이고, Ar is substituted or unsubstituted C 6-60 aryl; Substituted or unsubstituted C 2-60 heteroaryl including any one or more heteroatoms selected from the group consisting of N, O and S,
R
1, R
2, R
3, 및 R
4는 각각 독립적으로 수소; 중수소; 할로겐; 시아노; 치환 또는 비치환된 C
1-60 알킬; 치환 또는 비치환된 C
1-60 알콕시; 치환 또는 비치환된 C
2-60 알케닐; 치환 또는 비치환된 C
2-60 알키닐; 치환 또는 비치환된 C
3-60 사이클로알킬; 치환 또는 비치환된 C
6-60 아릴; 치환 또는 비치환된 N, O 및 S로 구성되는 군으로부터 선택되는 어느 하나 이상의 헤테로원자를 포함하는 C
2-60 헤테로아릴; 치환 또는 비치환된 트리(C
1-60 알킬)실릴; 또는 치환 또는 비치환된 트리(C
6-60 아릴)실릴이거나, 또는 인접한 두 개의 치환기가 결합하여 C
6-60 방향족 고리를 형성하고, R 1 , R 2 , R 3 , and R 4 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 2-60 alkenyl; Substituted or unsubstituted C 2-60 alkynyl; Substituted or unsubstituted C 3-60 cycloalkyl; Substituted or unsubstituted C 6-60 aryl; C 2-60 heteroaryl including any one or more heteroatoms selected from the group consisting of substituted or unsubstituted N, O, and S; Substituted or unsubstituted tri(C 1-60 alkyl)silyl; Or a substituted or unsubstituted tri(C 6-60 aryl)silyl, or two adjacent substituents are bonded to form a C 6-60 aromatic ring,
n1은 0 내지 2의 정수이고, n1 is an integer from 0 to 2,
n2 내지 n4는 각각 독립적으로 0 내지 3의 정수이고, n2 to n4 are each independently an integer of 0 to 3,
L은 하기 중 어느 하나이고, L is any one of the following,
상기에서, Above,
Y는 O, 또는 S이고,Y is O, or S,
R
5는 각각 독립적으로 수소; 중수소; 할로겐; 시아노; 치환 또는 비치환된 C
1-60 알킬; 치환 또는 비치환된 C
1-60 알콕시; 치환 또는 비치환된 C
2-60 알케닐; 치환 또는 비치환된 C
2-60 알키닐; 치환 또는 비치환된 C
3-60 사이클로알킬; 치환 또는 비치환된 C
6-60 아릴; 치환 또는 비치환된 N, O 및 S로 구성되는 군으로부터 선택되는 어느 하나 이상의 헤테로원자를 포함하는 C
2-60 헤테로아릴; 치환 또는 비치환된 트리(C
1-60 알킬)실릴; 또는 치환 또는 비치환된 트리(C
6-60 아릴)실릴이거나, 또는 인접한 두 개의 치환기가 결합하여 C
6-60 방향족 고리를 형성하고, Each R 5 is independently hydrogen; heavy hydrogen; halogen; Cyano; Substituted or unsubstituted C 1-60 alkyl; Substituted or unsubstituted C 1-60 alkoxy; Substituted or unsubstituted C 2-60 alkenyl; Substituted or unsubstituted C 2-60 alkynyl; Substituted or unsubstituted C 3-60 cycloalkyl; Substituted or unsubstituted C 6-60 aryl; C 2-60 heteroaryl including any one or more heteroatoms selected from the group consisting of substituted or unsubstituted N, O, and S; Substituted or unsubstituted tri(C 1-60 alkyl)silyl; Or a substituted or unsubstituted tri(C 6-60 aryl)silyl, or two adjacent substituents are bonded to form a C 6-60 aromatic ring,
n5는 0 내지 4의 정수이다. n5 is an integer from 0 to 4.
또한, 본 발명은, 제1 전극; 상기 제1 전극과 대향하여 구비된 제2 전극; 및 상기 제1 전극과 상기 제2 전극 사이에 구비된 1층 이상의 유기물층을 포함하는 유기 발광 소자로서, 상기 유기물층 중 1층 이상은 상기 화학식 1로 표시되는 화합물을 포함하는 것인, 유기 발광 소자를 제공한다.In addition, the present invention, the first electrode; A second electrode provided to face the first electrode; And one or more organic material layers provided between the first electrode and the second electrode, wherein at least one of the organic material layers comprises a compound represented by Formula 1 to provide.
상술한 화학식 1로 표시되는 화합물은 유기 발광 소자의 유기물층의 재료로서 사용될 수 있으며, 유기 발광 소자에서 효율의 향상, 낮은 구동전압 및/또는 수명 특성을 향상시킬 수 있다. The compound represented by Formula 1 may be used as a material for an organic material layer of an organic light-emitting device, and may improve efficiency, low driving voltage, and/or lifetime characteristics in the organic light-emitting device.
도 1은 기판(1), 양극(2), 발광층(3), 음극(4)으로 이루어진 유기 발광 소자의 예를 도시한 것이다. 1 shows an example of an organic light-emitting device comprising a substrate 1, an anode 2, a light-emitting layer 3, and a cathode 4.
도 2는 기판 (1), 양극(2), 정공주입층(5), 정공수송층(6), 발광층(7), 전자주입 및 수송층(8) 및 음극(4)로 이루어진 유기 발광 소자의 예를 도시한 것이다. 2 is an example of an organic light-emitting device comprising a substrate 1, an anode 2, a hole injection layer 5, a hole transport layer 6, a light-emitting layer 7, an electron injection and transport layer 8, and a cathode 4 Is shown.
이하, 본 발명의 이해를 돕기 위하여 보다 상세히 설명한다.Hereinafter, it will be described in more detail to aid the understanding of the present invention.
본 명세서에서,
또는
는 다른 치환기에 연결되는 결합을 의미한다.In this specification, or Means a bond connected to another substituent.
본 명세서에서 "치환 또는 비치환된" 이라는 용어는 중수소; 할로겐기; 시아노기; 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 헤테로아릴로 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, 비페닐이기는 아릴기일 수도 있고, 2개의 페닐기가 연결된 치환기로 해석될 수도 있다.In the present specification, the term "substituted or unsubstituted" refers to deuterium; Halogen group; Cyano group; Nitro group; Hydroxy group; Carbonyl group; Ester group; Imide group; Amino group; Phosphine oxide group; Alkoxy group; Aryloxy group; Alkyl thioxy group; Arylthioxy group; Alkyl sulfoxy group; Arylsulfoxy 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 it means substituted or unsubstituted with one or more substituents selected from the group consisting of heteroaryl containing one or more of N, O and S atoms, or substituted or unsubstituted with two or more substituents connected among the above-exemplified substituents. . For example, "a substituent to which two or more substituents are connected" may be a biphenyl group. That is, the biphenyl group may be an aryl group, or may be interpreted as a substituent to 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 the present specification, the number of carbon atoms of the carbonyl group is not particularly limited, but is preferably 1 to 40 carbon atoms. Specifically, it may be a compound having 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 ester group may be substituted with a C1-C25 linear, branched or cyclic alkyl group or an aryl group having 6 to 25 carbon atoms in the oxygen of the ester group. 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 the present specification, the number of carbon atoms of the imide group is not particularly limited, but it is preferably 1 to 25 carbon atoms. Specifically, it may be a compound having 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 is specifically trimethylsilyl group, triethylsilyl group, t-butyldimethylsilyl group, vinyldimethylsilyl group, propyldimethylsilyl group, triphenylsilyl group, diphenylsilyl group, phenylsilyl group, etc. However, it is not limited thereto.
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 a trimethyl boron group, a triethyl boron group, a t-butyldimethyl boron group, a triphenyl boron group, a phenyl boron group, and the like, but is not limited thereto.
본 명세서에 있어서, 할로겐기의 예로는 불소, 염소, 브롬 또는 요오드가 있다.In the present specification, examples of the halogen group 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 linear or branched, and the number of carbon atoms is not particularly limited, but is preferably 1 to 40. According to an exemplary embodiment, the alkyl group has 1 to 20 carbon atoms. According to another exemplary embodiment, the alkyl group has 1 to 10 carbon atoms. According to another exemplary embodiment, the alkyl group has 1 to 6 carbon atoms. Specific examples of the alkyl group 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, cycloheptylmethyl, 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, and the like, but are not limited thereto.
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 a linear or branched chain, and the number of carbon atoms is not particularly limited, but is preferably 2 to 40. According to an exemplary embodiment, the alkenyl group has 2 to 20 carbon atoms. According to another exemplary embodiment, the alkenyl group has 2 to 10 carbon atoms. According to another exemplary 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, and the like, but are not limited thereto.
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 an exemplary embodiment, the cycloalkyl group has 3 to 30 carbon atoms. According to another exemplary embodiment, the cycloalkyl group has 3 to 20 carbon atoms. According to another exemplary embodiment, the cycloalkyl group has 3 to 6 carbon atoms. Specifically, cyclopropyl, cyclobutyl, cyclopentyl, 3-methylcyclopentyl, 2,3-dimethylcyclopentyl, cyclohexyl, 3-methylcyclohexyl, 4-methylcyclohexyl, 2,3-dimethylcyclohexyl, 3, 4,5-trimethylcyclohexyl, 4-tert-butylcyclohexyl, cycloheptyl, cyclooctyl, and the like, but are not limited thereto.
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, 비페닐이기, 터페닐기 등이 될 수 있으나, 이에 한정되는 것은 아니다. 상기 다환식 아릴기로는 나프틸기, 안트라세닐기, 페난쓰레닐기, 파이레닐기, 페릴레닐기, 크라이세닐기, 플루오레닐기 등이 될 수 있으나, 이에 한정되는 것은 아니다.In the present specification, the aryl group is not particularly limited, but is preferably 6 to 60 carbon atoms, and may be a monocyclic aryl group or a polycyclic aryl group. According to an exemplary embodiment, the aryl group has 6 to 30 carbon atoms. According to an exemplary embodiment, the aryl group has 6 to 20 carbon atoms. The aryl group may be a monocyclic aryl group such as a phenyl group, a biphenyl group, or a terphenyl group, but is not limited thereto. The polycyclic aryl group may be a naphthyl group, an anthracenyl group, a phenanthrenyl group, a pyrenyl group, a perylenyl group, a chrysenyl group, a fluorenyl group, and the like, 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,
등이 될 수 있다. 다만, 이에 한정되는 것은 아니다.In the present specification, the fluorenyl group may be substituted, and two substituents may be bonded to each other to form a spiro structure. When the fluorenyl group is substituted, Can be, etc. However, it is not limited thereto.
본 명세서에 있어서, 헤테로아릴은 이종 원소로 O, N, Si 및 S 중 1개 이상을 포함하는 헤테로아릴로서, 탄소수는 특별히 한정되지 않으나, 탄소수 2 내지 60인 것이 바람직하다. 헤테로아릴의 예로는 잔텐(xanthene), 티오잔텐(thioxanthen), 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, 벤즈옥사졸기, 벤조이미다졸기, 벤조티아졸기, 벤조카바졸기, 벤조티오펜기, 디벤조티오펜기, 벤조퓨라닐기, 페난쓰롤린기(phenanthroline), 이소옥사졸릴기, 티아디아졸릴기, 페노티아지닐기 및 디벤조퓨라닐기 등이 있으나, 이들에만 한정되는 것은 아니다.In the present specification, heteroaryl is a heteroaryl containing at least one of O, N, Si, and S as a heterogeneous element, and the number of carbon atoms is not particularly limited, but it is preferably 2 to 60 carbon atoms. Examples of heteroaryl include xanthene, thioxanthen, thiophene group, furan group, pyrrole group, imidazole group, thiazole group, oxazole group, oxadiazole group, triazole group, pyridyl group, bipyridyl group, Pyrimidyl group, triazine group, 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, benzoxazole group, benzoimidazole group, benzothiazole group, benzocarbazole group, benzothiophene group, dibenzothiophene group, benzofuranyl group, phenanthroline group ( phenanthroline), isoxazolyl group, thiadiazolyl group, phenothiazinyl group, and dibenzofuranyl group, but are not limited thereto.
본 명세서에 있어서, 아르알킬기, 아르알케닐기, 알킬아릴기, 아릴아민기, 아릴실릴기 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 헤테로아릴에 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 헤테로아릴에 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 헤테로아릴에 관한 설명이 적용될 수 있다.In the present specification, the aryl group among the aralkyl group, aralkenyl group, alkylaryl group, arylamine group, and arylsilyl group is the same as the example of the aryl group described above. In the present specification, the alkyl group among the aralkyl group, the alkylaryl group and the alkylamine group is the same as the example of the aforementioned alkyl group. In the present specification, the heteroaryl among the heteroarylamines may be described above for heteroaryl. In the present specification, the alkenyl group of the aralkenyl group is the same as the example of the alkenyl group described above. In the present specification, the description of the aryl group described above may be applied except that the arylene is a divalent group. In the present specification, the description of the above-described heteroaryl may be applied except that the heteroarylene is a divalent group. In the present specification, the hydrocarbon ring is not a monovalent group, and the description of the aryl group or cycloalkyl group described above may be applied except that the hydrocarbon ring is formed by bonding of two substituents. In the present specification, the heterocycle is not a monovalent group, and the description of the above-described heteroaryl may be applied except that the heterocycle is formed by bonding of two substituents.
본 발명은 상기 화학식 1로 표시되는 화합물을 제공한다. The present invention provides a compound represented by Chemical Formula 1.
상기 화학식 1에서, 바람직하게는, Ar은 페닐, 비페닐릴, 터페닐릴, 나프틸, 안트라세닐, 페난쓰레닐, 디메틸플루오레닐, 디페닐플루오레닐, 디벤조퓨라닐, 디벤조티오페닐, 카바졸-9-일, 또는 9-페닐-카바졸릴이고, 상기 Ar은 비치환되거나 또는 하나 이상의 중수소로 치환된다. In Formula 1, preferably, Ar is phenyl, biphenylyl, terphenylyl, naphthyl, anthracenyl, phenanthrenyl, dimethylfluorenyl, diphenylfluorenyl, dibenzofuranyl, dibenzothio Phenyl, carbazol-9-yl, or 9-phenyl-carbazolyl, wherein Ar is unsubstituted or substituted with one or more deuterium.
바람직하게는, R
1, R
2, R
3 및 R
4는 수소이다. 이때 바람직하게는, n1 내지 n4가 0이다. Preferably, R 1 , R 2 , R 3 and R 4 are hydrogen. At this time, preferably, n1 to n4 are 0.
바람직하게는, R
1, R
2, R
3 및 R
4 중 하나는 페닐이고, 나머지는 수소이다. 이때 바람직하게는, n1 내지 n4 중 하나는 1이고, 나머지는 0이다. Preferably, one of R 1 , R 2 , R 3 and R 4 is phenyl and the other is hydrogen. At this time, preferably, one of n1 to n4 is 1, and the other is 0.
바람직하게는, 인접한 두 개의 R
1, 인접한 두 개의 R
2, 인접한 두 개의 R
3, 또는 인접한 두 개의 R
4가 서로 결합하여 벤젠 고리를 형성하고, 나머지 R
1 내지 R
4는 수소이다. 이때 바람직하게는, n1 내지 n4 중 하나는 2이고, 나머지는 0이다. Preferably, two adjacent R 1 , two adjacent R 2 , two adjacent R 3 , or two adjacent R 4 are bonded to each other to form a benzene ring, and the remaining R 1 to R 4 are hydrogen. At this time, preferably, one of n1 to n4 is 2, and the others are 0.
바람직하게는, R
5는 모두 수소이거나, 또는 R
5는 모두 중수소이다. 이때 바람직하게는, n5는 0 또는 4이다. Preferably, R 5 is all hydrogen, or R 5 is all deuterium. At this time, preferably, n5 is 0 or 4.
바람직하게는, 인접한 두 개의 R
5가 서로 결합하여 벤젠 고리를 형성하고, 나머지 R
5는 수소이다. 이때 바람직하게는, n5는 2이다. Preferably, two adjacent R 5s are bonded to each other to form a benzene ring, and the remaining R 5 is hydrogen. At this time, preferably, n5 is 2.
상기 화학식 1로 표시되는 화합물의 대표적인 예는 하기와 같다:Representative examples of the compound represented by Formula 1 are as follows:
한편, 본 발명은 일례로 하기 반응식 1과 같은 상기 화학식 1로 표시되는 화합물의 제조 방법을 제공한다:On the other hand, the present invention provides a method for preparing a compound represented by Formula 1, such as the following Scheme 1 as an example:
[반응식 1][Scheme 1]
상기 반응식 1에서, X'를 제외한 나머지 정의는 앞서 정의한 바와 같으며, X'는 할로겐이고, 보다 바람직하게는 클로로 또는 브로모이다. 상기 반응은 아민 치환 반응으로서, 팔라듐 촉매와 염기 존재 하에 수행하는 것이 바람직하며, 아민 치환 반응을 위한 반응기는 당업계에 알려진 바에 따라 변경이 가능하다. 상기 제조 방법은 후술할 제조예에서 보다 구체화될 수 있다.In Reaction Scheme 1, the definitions other than X'are as previously defined, and X'is halogen, more preferably chloro or bromo. The reaction is an amine substitution reaction, and is preferably carried out in the presence of a palladium catalyst and a base, and the reactor for the amine substitution reaction may be changed as known in the art. The manufacturing method may be more specific in the manufacturing examples to be described later.
또한, 본 발명은 상기 화학식 1로 표시되는 화합물을 포함하는 유기 발광 소자를 제공한다. In addition, the present invention provides an organic light-emitting device including the compound represented by Formula 1 above.
일례로, 본 발명은 제1 전극; 상기 제1 전극과 대향하여 구비된 제2 전극; 및 상기 제1 전극과 상기 제2 전극 사이에 구비된 1층 이상의 유기물층을 포함하는 유기 발광 소자로서, 상기 유기물층 중 1층 이상은 본 발명에 따른 화합물을 포함하는 것인, 유기 발광 소자를 제공한다. For example, the present invention provides a first electrode; A second electrode provided to face the first electrode; And one or more organic material layers provided between the first electrode and the second electrode, wherein at least one of the organic material layers contains the compound according to the present invention. .
또한, 본 발명에 따른 유기 발광 소자는, 기판 상에 양극, 1층 이상의 유기물층 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 유기물층 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.In addition, 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. In addition, 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 material 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. 1 shows an example of an organic light-emitting device comprising a substrate 1, an anode 2, a light-emitting layer 3, and a cathode 4. In such a structure, the compound represented by Formula 1 may be included in the emission layer.
도 2는 기판 (1), 양극(2), 정공주입층(5), 정공수송층(6), 발광층(7), 전자 주입 및 수송층(8) 및 음극(4)으로 이루어진 유기 발광 소자의 예를 도시한 것이다. 이와 같은 구조에 있어서, 상기 화학식 1로 표시되는 화합물은 상기 정공주입층, 정공수송층, 또는 발광층에 포함될 수 있다.2 is an example of an organic light-emitting device comprising a substrate 1, an anode 2, a hole injection layer 5, a hole transport layer 6, a light-emitting layer 7, an electron injection and transport layer 8, and a cathode 4 Is shown. In such a structure, the compound represented by Formula 1 may be included in the hole injection layer, the hole transport layer, or the emission layer.
본 발명에 따른 유기 발광 소자는, 본 발명에 따른 화합물을 사용하는 것을 제외하고는, 당 기술분야에 알려져 있는 재료와 방법으로 제조할 수 있다.The organic light-emitting device according to the present invention can be manufactured by materials and methods known in the art, except for using the compound according to the present invention.
예컨대, 본 발명에 따른 유기 발광 소자는 기판 상에 양극, 유기물층 및 음극을 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. For example, the organic light emitting device according to the present invention may be manufactured by sequentially laminating an anode, an organic material layer, and a cathode on a substrate. At this time, using a PVD (physical vapor deposition) method such as sputtering or e-beam evaporation, the anode is formed by depositing a metal or a conductive metal oxide or an alloy thereof on the substrate. And, after forming an organic material layer including a hole injection layer, a hole transport layer, a light emitting layer, and an electron transport layer thereon, it can be prepared by depositing a material that can be used as a cathode thereon.
이와 같은 방법 외에도, 기판 상에 음극 물질로부터 유기물층, 양극 물질을 차례로 증착시켜 유기 발광 소자를 제조할 수 있다(WO 2003/012890). 다만, 제조 방법이 이에 한정되는 것은 아니다. In addition to such a method, an organic light emitting device may be manufactured by sequentially depositing an organic material layer and an anode material from a cathode material on a substrate (WO 2003/012890). However, the manufacturing method is not limited thereto.
일례로, 상기 제1 전극은 양극이고, 상기 제2 전극은 음극이거나, 또는 상기 제1 전극은 음극이고, 상기 제2 전극은 양극이다.For example, the first electrode is an anode, the second electrode is a cathode, or the first electrode is a cathode, and the second electrode is an anode.
상기 양극 물질로는 통상 유기물층으로 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 SnO
2:Sb와 같은 금속과 산화물의 조합; 폴리(3-메틸티오펜), 폴리[3,4-(에틸렌-1,2-디옥시)티오펜](PEDOT), 폴리피롤 및 폴리아닐린과 같은 전도성 화합물 등이 있으나, 이들에만 한정되는 것은 아니다. As the anode material, a material having a large work function is preferable so that holes can be smoothly injected into the organic material layer. Specific examples of the cathode 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 compounds such as poly(3-methylthiophene), poly[3,4-(ethylene-1,2-dioxy)thiophene] (PEDOT), polypyrrole and polyaniline, and the like, but are not limited thereto.
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 LiO
2/Al과 같은 다층 구조 물질 등이 있으나, 이들에만 한정되는 것은 아니다. It is preferable that the cathode material is a material having a small work function to facilitate electron injection into the organic material 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-layered materials such as LiF/Al or LiO 2 /Al, but are not limited thereto.
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 화합물 등이 있으나, 이들에만 한정 되는 것은 아니다. The hole injection layer is a layer that injects holes from the electrode, and has the ability to transport holes as a hole injection material, so that it has a hole injection effect at the anode, an excellent hole injection effect for the light emitting layer or the light emitting material, and is generated from the light emitting layer. A compound that prevents the movement of excitons to the electron injection layer or the electron injection material and has excellent ability to form a thin film is preferable. It is preferable that the HOMO (highest occupied molecular orbital) of the hole injection material is between the work function of the positive electrode material and the HOMO of the surrounding organic material layer. Specific examples of hole injection materials include metal porphyrin, oligothiophene, arylamine-based organic substances, hexanitrile hexaazatriphenylene-based organic substances, quinacridone-based organic substances, and perylene-based organic substances. Organic substances, anthraquinone, polyaniline, and polythiophene-based conductive compounds, but are not limited thereto.
상기 정공수송층은 정공주입층으로부터 정공을 수취하여 발광층까지 정공을 수송하는 층으로, 정공 수송 물질로는 양극이나 정공 주입층으로부터 정공을 수송받아 발광층으로 옮겨줄 수 있는 물질로 정공에 대한 이동성이 큰 물질이 적합하다. 구체적인 예로는 아릴아민 계열의 유기물, 전도성 화합물, 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 emission layer.The hole transport material is a material capable of transporting holes from the anode or the hole injection layer to the emission layer, and has high mobility for holes. The material is suitable. Specific examples include an arylamine-based organic material, a conductive compound, and a block copolymer having a conjugated portion and a non-conjugated portion together, but are not limited thereto.
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. The emission layer may include a host material and a dopant material. Host materials include condensed aromatic ring derivatives or heterocyclic-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, ladder type Furan compounds, pyrimidine derivatives, and the like, but are not limited thereto.
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, the aromatic amine derivative is a condensed aromatic ring derivative having a substituted or unsubstituted arylamino group, and includes pyrene, anthracene, chrysene, periflanthene and the like having an arylamino group, and the styrylamine compound is substituted or unsubstituted As a compound in which at least one arylvinyl group is substituted on the arylamine, one or two or more substituents selected from the group consisting of aryl group, silyl group, alkyl group, cycloalkyl group, and arylamino group are substituted or unsubstituted. Specifically, there are styrylamine, styryldiamine, styryltriamine, and styryltetraamine, but are not limited thereto. In addition, examples of the metal complex include, but are not limited to, an iridium complex and a platinum complex.
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; Alq
3를 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 emission layer. As an electron transport material, a material capable of injecting electrons from the cathode and transferring them to the emission layer, and a material having high mobility for electrons is suitable. Do. Specific examples include Al complex of 8-hydroxyquinoline; Complexes containing Alq 3; Organic radical compounds; Hydroxyflavone-metal complexes, and the like, but are not limited thereto. 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 that have a low work function and are followed by an aluminum layer or a silver layer. Specifically, they are cesium, barium, calcium, ytterbium and samarium, and in each case an aluminum layer or a silver layer follows.
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 electron injection effect from the cathode, an excellent electron injection effect for the light emitting layer or the light emitting material, and hole injection of excitons generated in the light emitting layer A compound that prevents migration to the layer and is excellent in thin film forming ability is preferable. Specifically, fluorenone, anthraquinodimethane, diphenoquinone, thiopyran dioxide, oxazole, oxadiazole, triazole, imidazole, perylene tetracarboxylic acid, preorenylidene methane, anthrone, etc. Complex compounds and nitrogen-containing 5-membered ring derivatives, 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 compound 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-naphtholato)aluminum, bis(2-methyl-8-quinolinato)(2-naphtholato)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 top emission type, a bottom emission type, or a double-sided emission type depending on the material used.
또한, 본 발명에 따른 화합물은 유기 발광 소자 외에도 유기 태양 전지 또는 유기 트랜지스터에 포함될 수 있다.In addition, the compound according to the present invention may be included in an organic solar cell or an organic transistor in addition to the organic light emitting device.
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 the organic light-emitting device including 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][Production Example]
제조예 1: 중간체 A의 제조Preparation Example 1: Preparation of Intermediate A
단계 1) 중간체 A-1의 제조Step 1) Preparation of Intermediate A-1
디벤조[b,d]퓨란-1-일보론산(25.0 g, 117.9 mmol), 및 1-브로모-2-니트로나프탈렌(32.7 g, 129.7 mmol)을 THF(255 ml)에 녹이고, 포타슘 카보네이트(65.2 g, 471.7 mmol)를 물(125 ml)에 녹여 넣었다. 여기에 테트라키스(트리페닐포스핀)팔라듐(0)(6.8 g, 5.9 mmol)를 넣고, 아르곤 분위기의 환류 조건하에서 8시간 동안 교반하였다. 반응이 종료되면 상온으로 냉각한 후, 반응액을 분액 깔대기에 옮기고, 에틸 아세테이트로 추출하였다. 추출액을 MgSO
4로 건조 후, 여과 및 농축한 후, 실리카 겔 컬럼 크로마토그래피로 정제하여 중간체 A-1(28.8 g, 수율 72%)을 수득하였다.Dibenzo[b,d]furan-1-ylboronic acid (25.0 g, 117.9 mmol), and 1-bromo-2-nitronaphthalene (32.7 g, 129.7 mmol) were dissolved in THF (255 ml), and potassium carbonate ( 65.2 g, 471.7 mmol) was dissolved in water (125 ml). Tetrakis (triphenylphosphine) palladium (0) (6.8 g, 5.9 mmol) was added thereto, and the mixture was stirred for 8 hours under reflux conditions in an argon atmosphere. When the reaction was completed, the mixture was cooled to room temperature, and the reaction solution was transferred to a separatory funnel, and extracted with ethyl acetate. The extract was dried over MgSO 4 , filtered and concentrated, and then purified by silica gel column chromatography to obtain Intermediate A-1 (28.8 g, yield 72%).
MS: [M+H]
+= 339MS: [M+H] + = 339
단계 2) 중간체 A-2의 제조Step 2) Preparation of Intermediate A-2
앞서 제조한 중간체 A-1(25.0 g, 73.7 mmol), 트리페닐포스핀(15.3 g, 110.5 mmol), 및 o-디클로로벤젠(250 ml)을 넣고 환류 조건 하에서 24시간 동안 교반하였다. 반응이 종료되면 상온으로 냉각한 후, 감압 증류하여 용매를 제거하고 CH
2Cl
2로 추출하였다. 추출액을 MgSO
4로 건조, 여과 및 농축한 후, 실리카 겔 컬럼 크로마토그래피로 정제하여 중간체 A-2(15.4 g, 수율 68%)을 수득하였다.Intermediate A-1 (25.0 g, 73.7 mmol) prepared above, triphenylphosphine (15.3 g, 110.5 mmol), and o-dichlorobenzene (250 ml) were added and stirred for 24 hours under reflux conditions. When the reaction was completed, the mixture was cooled to room temperature, distilled under reduced pressure to remove the solvent, and extracted with CH 2 Cl 2. The extract was dried over MgSO 4 , filtered and concentrated, and then purified by silica gel column chromatography to obtain an intermediate A-2 (15.4 g, yield 68%).
MS: [M+H]
+= 307MS: [M+H] + = 307
단계 3) 중간체 A의 제조Step 3) Preparation of Intermediate A
앞서 제조한 중간체 A-2(15.0 g, 48.8 mmol), 소디움 클로라이드(48.5 g, 829.7 mmol), 알루미늄 클로라이드(247.3 g, 1854.6 mmol), 및 벤젠(450 ml)를 넣고 0℃에서 16시간 동안 교반하였다. 반응이 종료되면 물과 NaHCO
3 수용액으로 씻어주고, MgSO
4로 건조, 여과 및 농축한 후, 실리카 겔 컬럼 크로마토그래피로 정제하여 중간체 A(5.4 g, 수율 36%)를 수득하였다.Intermediate A-2 (15.0 g, 48.8 mmol) prepared above, sodium chloride (48.5 g, 829.7 mmol), aluminum chloride (247.3 g, 1854.6 mmol), and benzene (450 ml) were added and stirred at 0° C. for 16 hours I did. When the reaction was completed, the mixture was washed with water and an aqueous NaHCO 3 solution, dried over MgSO 4 , filtered and concentrated, and purified by silica gel column chromatography to obtain an intermediate A (5.4 g, yield 36%).
MS: [M+H]
+= 305MS: [M+H] + = 305
제조예 2: 중간체 B의 제조Preparation Example 2: Preparation of Intermediate B
디벤조[b,d]퓨란-1-일보론산 대신 디벤조[b,d]티오펜-1-일보론산을 사용한 것을 제외하고는, 중간체 A의 제조 방법과 동일한 방법으로 중간체 B를 제조하였다. Intermediate B was prepared in the same manner as in the preparation of Intermediate A, except that dibenzo[b,d]thiophen-1-ylboronic acid was used instead of dibenzo[b,d]furan-1-ylboronic acid.
MS: [M+H]
+= 382MS: [M+H] + = 382
[실시예][Example]
실시예 1: 화합물 1의 제조Example 1: Preparation of compound 1
중간체 A(10.0 g, 32.8 mmol), 및 중간체 a(10.1 g, 36.0 mmol)을 자일렌(300 ml)에 녹이고, 소디움 tert-부톡사이드(4.7 g, 49.1 mmol), 및 비스(트리-tert-부틸포스핀)팔라듐(0)(0.3 g, 0.7 mmol)을 넣은 후, 아르곤 분위기 환류 조건 하에서 6시간 동안 교반하였다. 반응이 종료되면 상온으로 냉각한 후, 물을 넣고 반응액을 분액 깔대기에 옮겨 추출하였다. 추출액을 MgSO
4로 건조 및 농축하고, 실리카 겔 컬럼 크로마토그래피로 정제한 후, 승화 정제를 통해 화합물 1(5.6 g, 수율 31%)을 수득하였다.Intermediate A (10.0 g, 32.8 mmol), and intermediate a (10.1 g, 36.0 mmol) were dissolved in xylene (300 ml), sodium tert-butoxide (4.7 g, 49.1 mmol), and bis(tri-tert- After adding butylphosphine) palladium (0) (0.3 g, 0.7 mmol), the mixture was stirred for 6 hours under reflux conditions in an argon atmosphere. When the reaction was completed, the mixture was cooled to room temperature, water was added, and the reaction solution was transferred to a separatory funnel for extraction. The extract was dried over MgSO 4 , concentrated, and purified by silica gel column chromatography, followed by sublimation purification to give compound 1 (5.6 g, yield 31%).
MS: [M+H]
+= 549MS: [M+H] + = 549
실시예 2: 화합물 2의 제조Example 2: Preparation of compound 2
중간체 a 대신 중간체 b를 사용한 것을 제외하고는, 화합물 1의 제조 방법과 동일한 방법으로 화합물 2를 제조하였다. Compound 2 was prepared in the same manner as in the preparation method of compound 1, except that intermediate b was used instead of intermediate a.
MS: [M+H]
+= 599MS: [M+H] + = 599
실시예 3: 화합물 3의 제조Example 3: Preparation of compound 3
중간체 a 대신 중간체 c를 사용한 것을 제외하고는, 화합물 1의 제조 방법과 동일한 방법으로 화합물 3을 제조하였다. Compound 3 was prepared in the same manner as in the preparation method of compound 1, except that the intermediate c was used instead of the intermediate a.
MS: [M+H]
+= 639MS: [M+H] + = 639
실시예 4: 화합물 4의 제조Example 4: Preparation of compound 4
중간체 a 대신 중간체 d를 사용한 것을 제외하고는, 화합물 1의 제조 방법과 동일한 방법으로 화합물 4를 제조하였다. Compound 4 was prepared in the same manner as in the preparation method of compound 1, except that the intermediate d was used instead of the intermediate a.
MS: [M+H]
+= 565MS: [M+H] + = 565
실시예 5: 화합물 5의 제조Example 5: Preparation of compound 5
중간체 a 대신 중간체 e를 사용한 것을 제외하고는, 화합물 1의 제조 방법과 동일한 방법으로 화합물 5를 제조하였다. Compound 5 was prepared in the same manner as in the preparation method of compound 1, except that the intermediate e was used instead of the intermediate a.
MS: [M+H]
+= 730MS: [M+H] + = 730
실시예 6: 화합물 6의 제조Example 6: Preparation of compound 6
중간체 A 대신 중간체 B를, 중간체 a 대신 중간체 f를 사용한 것을 제외하고는, 화합물 1의 제조 방법과 동일한 방법으로 화합물 6을 제조하였다. Compound 6 was prepared in the same manner as in the preparation method of compound 1, except that the intermediate B was used instead of the intermediate A and the intermediate f was used instead of the intermediate a.
MS: M+H]
+= 581MS: M+H] + = 581
실시예 7: 화합물 7의 제조Example 7: Preparation of compound 7
중간체 A 대신 중간체 B를, 중간체 a 대신 중간체 g를 사용한 것을 제외하고는, 화합물 1의 제조 방법과 동일한 방법으로 화합물 7을 제조하였다. Compound 7 was prepared in the same manner as in the preparation method of compound 1, except that intermediate B was used instead of intermediate A and intermediate g was used instead of intermediate a.
MS: [M+H]
+= 586MS: [M+H] + = 586
실시예 8: 화합물 8의 제조Example 8: Preparation of compound 8
중간체 A 대신 중간체 B를, 중간체 a 대신 중간체 h를 사용한 것을 제외하고는, 화합물 1의 제조 방법과 동일한 방법으로 화합물 8을 제조하였다. Compound 8 was prepared in the same manner as in the preparation method of compound 1, except that intermediate B was used instead of intermediate A and intermediate h was used instead of intermediate a.
MS: [M+H]
+= 697MS: [M+H] + = 697
[실험예][Experimental Example]
실험예 1Experimental Example 1
ITO(Indium Tin Oxide)가 1,400 Å의 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 ITO (Indium Tin Oxide) to a thickness of 1,400 Å was put in distilled water dissolved in a detergent and washed with ultrasonic waves. In this case, Fischer Co. product was used as a detergent, and distilled water secondarily filtered with a filter made by Millipore Co. was used as distilled water. After washing the ITO for 30 minutes, it was repeated twice with distilled water to perform ultrasonic cleaning for 10 minutes. After washing with distilled water, ultrasonic washing was performed with a solvent of isopropyl alcohol, acetone, and methanol, dried, and then transported to a plasma cleaner. In addition, after cleaning the substrate for 5 minutes using oxygen plasma, the substrate was transported to a vacuum evaporator.
이렇게 준비된 ITO 투명 전극 위에 하기 HI-A 화합물과 하기 HAT-CN 화합물을 각각 800 Å, 50 Å의 두께로 순차적으로 열 진공 증착하여 정공주입층을 형성하였다. 상기 정공주입층 위에 하기 HT-A 화합물을 800Å 두께로 진공 증착하여 정공수송층을 형성하고, 이어 하기 EB-A 화합물을 600Å의 두께로 열 진공 증착하여 전자저지층을 형성하였다. 상기 전자저지층 위에 앞서 제조한 화합물 1과 하기 RD 화합물을 98:2의 중량비로 400Å의 두께로 진공 증착하여 발광층을 형성하였다. 상기 발광층 위에, 하기 ET-A 화합물과 하기 Liq 화합물을 1:1의 중량비로 360Å의 두께로 열 진공 증착하여 전자수송층을 형성하고, 이어 하기 Liq 화합물을 5Å의 두께로 진공 증착하여 전자주입층을 형성하였다. 상기 전자주입층 위에 순차적으로 마그네슘과 은을 10:1의 중량비로 220Å의 두께로, 알루미늄을 1000Å 두께로 증착하여 음극을 형성하여, 유기 발광 소자를 제조하였다.On the thus prepared ITO transparent electrode, the following HI-A compound and the following HAT-CN compound were sequentially thermally vacuum deposited to a thickness of 800 Å and 50 Å, respectively, to form a hole injection layer. On the hole injection layer, the following HT-A compound was vacuum-deposited to a thickness of 800 Å to form a hole transport layer, followed by thermal vacuum evaporation of the following EB-A compound to a thickness of 600 Å to form an electron blocking layer. On the electron blocking layer, the compound 1 prepared above and the following RD compound were vacuum-deposited to a thickness of 400 Å at a weight ratio of 98:2 to form a light emitting layer. On the light-emitting layer, the following ET-A compound and the following Liq compound were thermally vacuum deposited to a thickness of 360 Å at a weight ratio of 1:1 to form an electron transport layer, and then the following Liq compound was vacuum deposited to a thickness of 5 Å to form an electron injection layer. Formed. An organic light-emitting device was manufactured by sequentially depositing magnesium and silver on the electron injection layer to a thickness of 220 Å at a weight ratio of 10:1 and aluminum to a thickness of 1000 Å to form a cathode.
상기의 과정에서 유기물의 증착속도는 0.4 ~ 0.7 Å/sec를 유지하였고, 증착시 진공도는 2X10
-7 ~ 5X10
-6 torr를 유지하여, 유기 발광 소자를 제작하였다.In the above process, the deposition rate of the organic material was maintained at 0.4 ~ 0.7 Å/sec, and the vacuum degree during deposition was maintained at 2X10 -7 ~ 5X10 -6 torr, thereby fabricating an organic light-emitting device.
실험예 2 내지 10Experimental Examples 2 to 10
화합물 1 대신 하기 표 1에 기재된 화합물을 사용하는 것을 제외하고는, 상기 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 shown in Table 1 was used instead of Compound 1.
비교 실험예 1 내지 3Comparative Experimental Examples 1 to 3
화합물 1 대신 하기 표 1에 기재된 화합물을 사용하는 것을 제외하고는, 상기 실험예 1과 동일한 방법으로 유기 발광 소자를 제조하였다. 하기 표 1에서, RH-A, RH-B 및 RH-C는 각각 하기의 화합물을 의미한다. An organic light-emitting device was manufactured in the same manner as in Experimental Example 1, except that the compound shown in Table 1 was used instead of Compound 1. In Table 1 below, RH-A, RH-B and RH-C each mean the following compounds.
상기 실험예 1 내지 10 및 비교 실험예 1 내지 3에서 제조한 유기 발광 소자에 전류를 인가하여, 구동 전압, 발광 효율, 수명을 측정하고 그 결과를 하기 표 1에 나타내었다. 이때, 구동 전압 및 발광 효율은 10 mA/cm
2의 전류 밀도를 인가하여 측정되었으며, LT97은 전류 밀도 20 mA/cm
2에서 초기 휘도가 97%로 저하할 때까지의 시간을 의미한다.By applying a current to the organic light emitting device prepared in Experimental Examples 1 to 10 and Comparative Experimental Examples 1 to 3, driving voltage, luminous efficiency, and lifetime were measured, and the results are shown in Table 1 below. At this time, the driving voltage and luminous efficiency were measured by applying a current density of 10 mA/cm 2 , and LT97 refers to the time until the initial luminance decreases to 97% at the current density of 20 mA/cm 2.
| 호스트Host | 구동전압(V@10mA/cm 2)Driving voltage (V@10mA/cm 2 ) | 발광효율(V@10mA/cm 2)Luminous efficiency (V@10mA/cm 2 ) | 수명(LT97)(hr@20mA/cm 2)Life (LT97)(hr@20mA/cm 2 ) | |
| 실험예 1Experimental Example 1 |
화합물 1 |
4.734.73 | 23.523.5 | 101101 |
| 실험예 2Experimental Example 2 |
화합물 2 |
4.714.71 | 23.323.3 | 117117 |
| 실험예 3Experimental Example 3 |
화합물 3 |
4.744.74 | 23.023.0 | 119119 |
| 실험예 4Experimental Example 4 |
화합물 4 |
4.704.70 | 23.823.8 | 100100 |
| 실험예 5Experimental Example 5 |
화합물 5 |
4.794.79 | 23.123.1 | 107107 |
| 실험예 6Experimental Example 6 |
화합물 6 |
4.814.81 | 22.322.3 | 9494 |
| 실험예 7Experimental Example 7 |
화합물 7 |
4.854.85 | 23.623.6 | 9898 |
| 실험예 8Experimental Example 8 |
화합물 8 |
4.864.86 | 24.124.1 | 8585 |
| 비교실험예 1Comparative Experimental Example 1 | RH-ARH-A | 5.105.10 | 18.318.3 | 6565 |
|
비교실험예 2 |
RH-BRH-B | 5.155.15 | 20.920.9 | 8383 |
|
비교실험예 3 |
RH-CRH-C | 5.815.81 | 12.312.3 | 4646 |
본 발명에 따른 화학식 1로 표시되는 화합물은 전자 받개 역할을 하는 치환기 구조와 전자 주개 역할을 하는 모핵 구조가 연결된 형태로 구성되어 있다. 또한 성질이 전혀 다른 두 유닛이 직접 결합되어 있기 때문에 분자 내부에서 전하를 주고 받아 작은 밴드갭을 갖고 있고 이는, 적색 도펀트로의 에너지 전달에 유리하여 적색 발광층의 호스트로 활용하기 적절하다. 또한, 전자 주개 역할을 하는 모핵 구조는 벤조카바졸과 벤조퓨란 혹은 벤조씨오펜이 모두 축합되어 고리를 형성함으로써 높은 안정성을 나타낸다. 특히, 전자 받개 역할을 하는 유닛이 비교예에 적용된 퀴나졸린 구조에 비해 전자 전달에 우수한 특성을 가지고 있어 고효율의 특성을 나타낸다. 결과적으로, 본 발명에 따른 화합물들을 유기 전계 발광 소자의 적색 발광층 호스트로 적용하였을 경우, 저전압, 고효율, 장수명의 특성을 나타내 최적의 소자를 얻을 수 있다. The compound represented by Formula 1 according to the present invention is configured in a form in which a substituent structure serving as an electron acceptor and a parent nucleus structure serving as an electron donor are connected. In addition, since the two units of completely different properties are directly bonded, they have a small band gap by exchanging charges inside the molecule, which is advantageous for energy transfer to the red dopant and is suitable for use as a host of the red light emitting layer. In addition, the parental structure serving as an electron donor exhibits high stability by condensing both benzocarbazole and benzofuran or benzothiophene to form a ring. In particular, the unit serving as an electron acceptor has excellent properties in electron transfer compared to the quinazoline structure applied in the comparative example, and thus exhibits high efficiency characteristics. As a result, when the compounds according to the present invention are applied as a host of the red emission layer of an organic electroluminescent device, they exhibit characteristics of low voltage, high efficiency, and long life, thereby obtaining an optimal device.
[부호의 설명][Explanation of code]
1: 기판 2: 양극1: substrate 2: anode
3: 발광층 4: 음극3: light-emitting layer 4: cathode
5: 정공주입층 6: 정공수송층5: hole injection layer 6: hole transport layer
7: 발광층 8: 전자주입 및 수송층7: light emitting layer 8: electron injection and transport layer
Claims (9)
- 하기 화학식 1로 표시되는 화합물:Compound represented by the following formula (1):[화학식 1][Formula 1]
상기 화학식 1에서, In Formula 1,X는 O, 또는 S이고,X is O, or S,Ar은 치환 또는 비치환된 C 6-60 아릴; 치환 또는 비치환된 N, O 및 S로 구성되는 군으로부터 선택되는 어느 하나 이상의 헤테로원자를 포함하는 C 2-60 헤테로아릴이고, Ar is substituted or unsubstituted C 6-60 aryl; Substituted or unsubstituted C 2-60 heteroaryl including any one or more heteroatoms selected from the group consisting of N, O and S,R 1, R 2, R 3, 및 R 4는 각각 독립적으로 수소; 중수소; 할로겐; 시아노; 치환 또는 비치환된 C 1-60 알킬; 치환 또는 비치환된 C 1-60 알콕시; 치환 또는 비치환된 C 2-60 알케닐; 치환 또는 비치환된 C 2-60 알키닐; 치환 또는 비치환된 C 3-60 사이클로알킬; 치환 또는 비치환된 C 6-60 아릴; 치환 또는 비치환된 N, O 및 S로 구성되는 군으로부터 선택되는 어느 하나 이상의 헤테로원자를 포함하는 C 2-60 헤테로아릴; 치환 또는 비치환된 트리(C 1-60 알킬)실릴; 또는 치환 또는 비치환된 트리(C 6-60 아릴)실릴이거나, 또는 인접한 두 개의 치환기가 결합하여 C 6-60 방향족 고리를 형성하고, R 1 , R 2 , R 3 , and R 4 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 2-60 alkenyl; Substituted or unsubstituted C 2-60 alkynyl; Substituted or unsubstituted C 3-60 cycloalkyl; Substituted or unsubstituted C 6-60 aryl; C 2-60 heteroaryl including any one or more heteroatoms selected from the group consisting of substituted or unsubstituted N, O, and S; Substituted or unsubstituted tri(C 1-60 alkyl)silyl; Or a substituted or unsubstituted tri(C 6-60 aryl)silyl, or two adjacent substituents are bonded to form a C 6-60 aromatic ring,n1은 0 내지 2의 정수이고, n1 is an integer from 0 to 2,n2 내지 n4는 각각 독립적으로 0 내지 3의 정수이고, n2 to n4 are each independently an integer of 0 to 3,L은 하기 중 어느 하나이고, L is any one of the following,
상기에서, Above,Y는 O, 또는 S이고,Y is O, or S,R 5는 각각 독립적으로 수소; 중수소; 할로겐; 시아노; 치환 또는 비치환된 C 1-60 알킬; 치환 또는 비치환된 C 1-60 알콕시; 치환 또는 비치환된 C 2-60 알케닐; 치환 또는 비치환된 C 2-60 알키닐; 치환 또는 비치환된 C 3-60 사이클로알킬; 치환 또는 비치환된 C 6-60 아릴; 치환 또는 비치환된 N, O 및 S로 구성되는 군으로부터 선택되는 어느 하나 이상의 헤테로원자를 포함하는 C 2-60 헤테로아릴; 치환 또는 비치환된 트리(C 1-60 알킬)실릴; 또는 치환 또는 비치환된 트리(C 6-60 아릴)실릴이거나, 또는 인접한 두 개의 치환기가 결합하여 C 6-60 방향족 고리를 형성하고, Each R 5 is independently hydrogen; heavy hydrogen; halogen; Cyano; Substituted or unsubstituted C 1-60 alkyl; Substituted or unsubstituted C 1-60 alkoxy; Substituted or unsubstituted C 2-60 alkenyl; Substituted or unsubstituted C 2-60 alkynyl; Substituted or unsubstituted C 3-60 cycloalkyl; Substituted or unsubstituted C 6-60 aryl; C 2-60 heteroaryl including any one or more heteroatoms selected from the group consisting of substituted or unsubstituted N, O, and S; Substituted or unsubstituted tri(C 1-60 alkyl)silyl; Or a substituted or unsubstituted tri(C 6-60 aryl)silyl, or two adjacent substituents are bonded to form a C 6-60 aromatic ring,n5는 0 내지 4의 정수이다. n5 is an integer from 0 to 4. - 제1항에 있어서, The method of claim 1,Ar은 페닐, 비페닐릴, 터페닐릴, 나프틸, 안트라세닐, 페난쓰레닐, 디메틸플루오레닐, 디페닐플루오레닐, 디벤조퓨라닐, 디벤조티오페닐, 카바졸-9-일, 또는 9-페닐-카바졸릴이고, Ar is phenyl, biphenylyl, terphenylyl, naphthyl, anthracenyl, phenanthrenyl, dimethylfluorenyl, diphenylfluorenyl, dibenzofuranyl, dibenzothiophenyl, carbazol-9-yl, Or 9-phenyl-carbazolyl,상기 Ar은 비치환되거나 또는 하나 이상의 중수소로 치환된, Ar is unsubstituted or substituted with one or more deuterium,화합물.compound.
- 제1항에 있어서, The method of claim 1,R 1, R 2, R 3 및 R 4는 수소인, R 1 , R 2 , R 3 and R 4 are hydrogen,화합물.compound.
- 제1항에 있어서, The method of claim 1,R 1, R 2, R 3 및 R 4 중 하나는 페닐이고, 나머지는 수소인,One of R 1 , R 2 , R 3 and R 4 is phenyl, and the other is hydrogen,화합물. compound.
- 제1항에 있어서, The method of claim 1,인접한 두 개의 R 1, 인접한 두 개의 R 2, 인접한 두 개의 R 3, 또는 인접한 두 개의 R 4가 서로 결합하여 벤젠 고리를 형성하고, 나머지 R 1 내지 R 4는 수소인,Two adjacent R 1 , two adjacent R 2 , two adjacent R 3 , or two adjacent R 4 bonded to each other to form a benzene ring, and the remaining R 1 to R 4 are hydrogen,화합물. compound.
- 제1항에 있어서, The method of claim 1,R 5는 모두 수소이거나, 또는R 5 is all hydrogen, orR 5는 모두 중수소인,R 5 is all deuterium,화합물. compound.
- 제1항에 있어서, The method of claim 1,인접한 두 개의 R 5가 서로 결합하여 벤젠 고리를 형성하고, 나머지 R 5는 수소인,Two adjacent R 5s are bonded to each other to form a benzene ring, and the remaining R 5 is hydrogen,화합물. compound.
- 제1항에 있어서, The method of claim 1,상기 화학식 1로 표시되는 화합물은, 하기로 구성되는 군으로부터 선택되는 어느 하나인,The compound represented by Formula 1 is any one selected from the group consisting of,화합물:compound:
- 제1 전극; 상기 제1 전극과 대향하여 구비된 제2 전극; 및 상기 제1 전극과 상기 제2 전극 사이에 구비된 1층 이상의 유기물층을 포함하는 유기 발광 소자로서, 상기 유기물층 중 1층 이상은 제1항 내지 제8항 중 어느 하나의 항에 따른 화합물을 포함하는 것인, 유기 발광 소자.A first electrode; A second electrode provided to face the first electrode; And one or more organic material layers provided between the first electrode and the second electrode, wherein at least one of the organic material layers contains the compound according to any one of claims 1 to 8. That is, an organic light-emitting device.
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