Patent Application
20170324046
This application claims priority to and the benefit of Korean Patent Application No. 10-2014-0150750 filed in the Korean Intellectual Property Office on Oct. 31, 2014, the entire contents of which are incorporated herein by reference.
The present specification relates to a hetero-cyclic compound and an organic light emitting device using the same.
An organic light emitting device is a kind of self-emitting type display device, and has an advantage in that the viewing angle is wide, the contrast is excellent, and the response speed is fast.
An organic light emitting device has a structure in which an organic thin film is disposed between two electrodes. When a voltage is applied to an organic light emitting device having the structure, electrons and holes injected from the two electrodes combine with each other in an organic thin film to make a pair, and then, emit light while being extinguished. The organic thin film may be composed of a single layer or multi layers, if necessary.
A material for the organic thin film may have a light emitting function, if necessary. For example, as the material for the organic thin film, it is also possible to use a compound, which may itself constitute a light emitting layer alone, or it is also possible to use a compound, which may serve as a host or a dopant of a host-dopant-based light emitting layer. In addition, as a material for the organic thin film, it is also possible to use a compound, which may serve as hole injection, hole transport, electron blocking, hole blocking, electron transport or electron injection.
In order to improve the performance, service life, or efficiency of the organic light emitting device, there is a continuous need for developing a material for an organic thin film.
The present specification provides a novel hetero-cyclic compound and an organic light emitting device using the same.
According to an exemplary embodiment of the present application, provided is a hetero-cyclic compound represented by the following Chemical Formula 1.
In Chemical Formula 1,
X1 and X2 are the same as or different from each other, and are each independently N or CR1,
R1 to R9 are the same as or different from each other, and are each independently selected from the group consisting of hydrogen; deuterium; halogen; —SiR10R11R12; —P(═O)R13R14; a substituted or unsubstituted C1 to C60 alkyl; a substituted or unsubstituted C6 to C60 aryl; a substituted or unsubstituted C2 to C60 heteroaryl; and an amine which is unsubstituted or substituted with one or more substituents selected from a substituted or unsubstituted C1 to C60 alkyl, a substituted or unsubstituted C6 to C60 aryl, and a substituted or unsubstituted C2 to C60 heteroaryl, and
R10 to R14 are the same as or different from each other, and are each independently hydrogen; deuterium; a substituted or unsubstituted C1 to C60 alkyl; a substituted or unsubstituted C6 to C60 aryl; or a substituted or unsubstituted C2 to C60 heteroaryl.
Further, according to an exemplary embodiment of the present specification, provided is an organic light emitting device including a positive electrode, a negative electrode, and one or more organic material layers provided between the positive electrode and the negative electrode, in which one or more layers of the organic material layers include the above-described hetero-cyclic compound.
The compound described in the present specification may be used as a material for the organic material layer of the organic light emitting device. The organic material layer including the compound may serve as a hole injection layer, a hole transporting layer, a light emitting layer, an electron transporting material, an electron injection layer, and the like in the organic light emitting device.
In particular, the hetero-cyclic compound represented by Chemical Formula 1 may be used as a material for the electron transporting layer of the organic light emitting device.
Hereinafter, the present specification will be described in detail.
The hetero-cyclic compound described in the present specification may be represented by Chemical Formula 1.
Specifically, the hetero-cyclic compound represented by Formula 1 may be used as a material for an organic material layer of an organic light emitting device by the structural characteristics of the core structure and the substituent as described above.
In the present specification, “substituted or unsubstituted” means being unsubstituted or substituted with one or more substituents selected from the group consisting of deuterium; halogen; —CN; a C1 to C60 alkyl; a C2 to C60 alkenyl; a C2 to C60 alkynyl; a C3 to C60 cycloalkyl; a C2 to C60 heterocycloalkyl; a C6 to C60 aryl; a C2 to C60 heteroaryl; —SiRR′R″; —P(═O)RR′; a C1 to C20 alkylamine; a C6 to C60 arylamine; and a C2 to C60 heteroarylamine, being unsubstituted or substituted with a substituent to which two or more substituents among the substituents are linked, or being unsubstituted or substituted with a substituent to which two or more substituents selected among the exemplified substituents are linked. For example, “the substituent to which two or more substituents are linked” may be a biphenyl group.
That is, the biphenyl group may also be an aryl group, and may be interpreted as a substituent to which two phenyl groups are linked. The additional substituents may also be additionally substituted.
R, R′, and R″ are the same as or different from each other, and are each independently hydrogen; deuterium; a substituted or unsubstituted C1 to C60 alkyl; a substituted or unsubstituted C6 to C60 aryl; or a substituted or unsubstituted C2 to C60 heteroaryl.
According to an exemplary embodiment of the present specification, the “substituted or unsubstituted” means being unsubstituted or substituted with one or more substituents selected from the group consisting of deuterium, halogen, —SiRR′R″, —P(═O)RR′, a C1 to C60 alkyl, a C6 to C60 aryl, and C2 to C60 heteroaryl.
R, R′, and R″ are the same as or different from each other, and are each independently hydrogen; deuterium; a C1 to C60 alkyl which is unsubstituted or substituted with one or more substituents selected from the group consisting of deuterium, halogen, a C1 to C60 alkyl, a C6 to C60 aryl, and a C2 to C60 heteroaryl; a C6 to C60 aryl which is unsubstituted or substituted with one or more substituents selected from the group consisting of deuterium, halogen, a C1 to C60 alkyl, a C6 to C60 aryl, and a C2 to C60 heteroaryl; or a C2 to C60 heteroaryl which is unsubstituted or substituted with one or more substituents selected from the group consisting of deuterium, halogen, a C1 to C60 alkyl, a C6 to C60 aryl, and a C2 to C60 heteroaryl.
In the present specification, the halogen may be fluorine, chlorine, bromine or iodine.
In the present specification, the alkyl includes a straight-chain or branched chain having 1 to 60 carbon atoms, and may be additionally substituted with another substituent. The number of carbon atoms of the alkyl may be 1 to 60, specifically 1 to 40, and more specifically 1 to 20.
In the present specification, the alkenyl includes a straight-chain or branched chain having 2 to 60 carbon atoms, and may be additionally substituted with another substituent. The number of carbon atoms of the alkenyl may be 2 to 60, specifically 2 to 40, and more specifically 2 to 20.
In the present specification, the alkynyl includes a straight-chain or branched chain having 2 to 60 carbon atoms, and may be additionally substituted with another substituent. The number of carbon atoms of the alkynyl may be 2 to 60, specifically 2 to 40, and more specifically 2 to 20.
In the present specification, the cycloalkyl includes a monocycle or polycycle having 3 to 60 carbon atoms, and may be additionally substituted with another substituent.
Here, the polycycle means a group in which cycloalkyl is directly linked to or fused with another cyclic group.
Here, another cyclic group may also be cycloalkyl, but may also be another kind of cyclic group, for example, heterocycloalkyl, aryl, heteroaryl, and the like. The number of carbon atoms of the cycloalkyl may be 3 to 60, specifically 3 to 40, and more specifically 5 to 20.
In the present specification, the heterocycloalkyl includes O, S, Se, N, and Si as a heteroatom, includes a monocycle or polycycle having 2 to 60 carbon atoms, and may be additionally substituted with another substituent. Here, the polycycle means a group in which heterocycloalkyl is directly linked to or fused with another cyclic group.
Here, another cyclic group may also be heterocycloalkyl, but may also be another kind of cyclic group, for example, cycloalkyl, aryl, heteroaryl, and the like. The number of carbon atoms of the heterocycloalkyl may be 2 to 60, specifically 2 to 40, and more specifically 3 to 20.
In the present specification, the aryl includes a monocycle or polycycle having 6 to 60 carbon atoms, and may be additionally substituted with another substituent. Here, the polycycle means a group in which aryl is directly linked to or fused with another cyclic group. Here, another cyclic group may also be aryl, but may also be another kind of cyclic group, for example, cycloalkyl, heterocycloalkyl, heteroaryl, and the like. The aryl includes a spiro group. The number of carbon atoms of the aryl may be 6 to 60, specifically 6 to 40, and more specifically 6 to 25. Specific examples of the aryl include phenyl, biphenyl, triphenyl, naphthyl, terphenyl, anthryl, chrysenyl, phenanthrenyl, perylenyl, fluoranthenyl, triphenylenyl, phenalenyl, pyrenyl, tetracenyl, pentacenyl, fluorenyl, indenyl, acenaphthylenyl, benzofluorenyl, spirobifluorenyl, 2,3-dihydro-1H-indenyl, and the like, or fused rings thereof, but are not limited thereto.
In the present specification, the spiro group is a group including a spiro structure, and may have 15 to 60 carbon atoms. For example, the spiro group may include a structure in which a 2,3-dihydro-1H-indene group or a cyclohexane group is spiro-bonded to a fluorene group.
Specifically, the spiro group includes a group of the following structural formulae.
In the present specification, the heteroaryl includes S, O, Se, N, or Si as a heteroatom, includes a monocycle or a polycycle having 2 to 60 carbon atoms, and may be additionally substituted with another substituent. Here, the polycycle means a group in which heteroaryl is directly linked to or fused with another cyclic group. Here, another cyclic group may also be heteroaryl, but may also be another kind of cyclic group, for example, cycloalkyl, heterocycloalkyl, aryl, and the like. The number of carbon atoms of the heteroaryl may be 2 to 60, specifically 2 to 40, and more specifically 3 to 25. Specific examples of the heteroaryl include pyridyl, pyrrolyl, pyrimidyl, pyridazinyl, furanyl, a thiophene group, imidazolyl, pyrazolyl, oxazolyl, isoxazolyl, thiazolyl, isothiazolyl, triazolyl, furazanyl, oxadiazolyl, thiadiazolyl, dithiazolyl, tetrazolyl, pyranyl, thiopyranyl, diazinyl, oxazinyl, thiazinyl, dioxynyl, triazinyl, tetrazinyl, quinolyl, isoquinolyl, quinazolinyl, isoquinazolinyl, quinozolinyl, naphthyridyl, acridinyl, phenanthridinyl, imidazopyridyl, diazanaphthalenyl, triazaindene, indolyl, indolyzinyl, benzothiazolyl, benzoxazolyl, benzimidazolyl, a benzothiophene group, a benzofuran group, a dibenzothiophene group, a dibenzofuran group, carbazolyl, benzocarbazolyl, dibenzocarbazolyl, phenazinyl, dibenzosilole, spirobi(dibenzosilole), dihydrophenazinyl, phenoxazinyl, phenanthridyl, thienyl, indolecarbazolyl, indolinyl, phenanthrazinyl, phenothiathiazinyl, phthalazinyl, naphthylidinyl, phenanthrolinyl, benzothiadiazolyl, dibenzoazasilinyl, pyrazoloquinazolinyl, pyridoindazolyl, pyridoimidazoindolinyl, dihydroindenocarbazolyl, a dibenzoselenophene group, and the like, or fused rings thereof, but are not limited thereto.
In the present specification, the amine may be selected from the group consisting of monoalkylamine; monoarylamine; monoheteroarylamine; —NH2; dialkylamine; diarylamine; diheteroarylamine; alkylarylamine; alkylheteroarylamine; and arylheteroarylamine, and the number of carbon atoms thereof is not particularly limited, but is preferably 1 to 30. Specific examples of the amine include methylamine, dimethylamine, ethylamine, diethylamine, phenylamine, naphthylamine, biphenylamine, dibiphenylamine, anthracenylamine, 9-methyl-anthracenylamine, diphenylamine, phenylnaphthylamine, ditolylamine, phenyltolylamine, triphenylamine, biphenylnaphthylamine, phenylbiphenylamine, biphenylfluorenylamine, phenyltriphenylenylamine, biphenyltriphenylenylamine, diphenylcarbazolylamine, and the like, but are not limited thereto.
According to an exemplary embodiment of the present specification, in Chemical Formula 1, at least one of R1 to R9 is -(L)m-(Z)n,
L is selected from the group consisting of a direct bond; a substituted or unsubstituted C6 to C60 arylene; and a substituted or unsubstituted C2 to C60 heteroarylene,
m is an integer of 1 to 3,
n is an integer of 1 to 3,
Z is selected from the group consisting of hydrogen; deuterium; —P(═O)R15R16; —SiR17R18R19; a substituted or unsubstituted C1 to C60 alkyl; a substituted or unsubstituted C6 to C60 aryl; a substituted or unsubstituted C2 to C60 heteroaryl; and an amine which is unsubstituted or substituted with one or more substituents selected from a substituted or unsubstituted C1 to C60 alkyl, a substituted or unsubstituted C6 to C60 aryl, and a substituted or unsubstituted C2 to C60 heteroaryl, and
when m is 2 or more, L's are the same as or different from each other,
when n is 2 or more, Z's are the same as or different from each other, and
R15 to R19 are the same as or different from each other, and are each independently hydrogen; deuterium; a substituted or unsubstituted C1 to C60 alkyl; a substituted or unsubstituted C6 to C60 aryl; or a substituted or unsubstituted C2 to C60 heteroaryl.
According to an exemplary embodiment of the present specification, in Chemical Formula 1, at least one of R1 to R9 is -(L)m-(Z)n,
L is selected from the group consisting of a direct bond; a C6 to C60 arylene which is unsubstituted or substituted with one or more substituents selected from the group consisting of deuterium, halogen, —SiRR′R″, —P(═O)RR′, a C1 to C60 alkyl, a C6 to C60 aryl, and a C2 to C60 heteroaryl; and a C2 to C60 heteroarylene which is unsubstituted or substituted with one or more substituents selected from the group consisting of deuterium, halogen, —SiRR′R″, —P(═O)RR′, a C1 to C60 alkyl, a C6 to C60 aryl, and a C2 to C60 heteroaryl,
m is an integer of 1 to 3,
n is an integer of 1 to 3,
Z is selected from the group consisting of hydrogen; deuterium; —P(═O) R15R16; —SiR17R18R19; a C1 to C60 alkyl which is unsubstituted or substituted with one or more substituents selected from the group consisting of deuterium, halogen, —SiRR′R″, —P(═O)RR′, a C1 to C60 alkyl, a C6 to C60 aryl, and a C2 to C60 heteroaryl; a C6 to C60 aryl which is unsubstituted or substituted with one or more substituents selected from the group consisting of deuterium, halogen, —SiRR′R″, —P(═O)RR′, a C1 to C60 alkyl, a C6 to C60 aryl, and a C2 to C60 heteroaryl; a C2 to C60 heteroaryl which is unsubstituted or substituted with one or more substituents selected from the group consisting of deuterium, halogen, —SiRR′R″, —P(═O)RR′, a C1 to C60 alkyl, a C6 to C60 aryl, and a C2 to C60 heteroaryl; and an amine which is unsubstituted or substituted with one or more substituents selected from a substituted or unsubstituted C1 to C60 alkyl, a substituted or unsubstituted C6 to C60 aryl, and a substituted or unsubstituted C2 to C60 heteroaryl,
when m is 2 or more, L's are the same as or different from each other,
when n is 2 or more, Z's are the same as or different from each other, and
R, R′, R″, and R15 to R19 are the same as or different from each other, and are each independently hydrogen; deuterium; a C1 to C60 alkyl which is unsubstituted or substituted with one or more substituents selected from the group consisting of deuterium, halogen, —SiRR′R″, —P(═O)RR′, a C1 to C60 alkyl, a C6 to C60 aryl, and a C2 to C60 heteroaryl; a C6 to C60 aryl which is unsubstituted or substituted with one or more substituents selected from the group consisting of deuterium, halogen, —SiRR′R″, —P(═O)RR′, a C1 to C60 alkyl, a C6 to C60 aryl, and a C2 to C60 heteroaryl; or a C2 to C60 heteroaryl which is unsubstituted or substituted with one or more substituents selected from the group consisting of deuterium, halogen, —SiRR′R″, —P(═O)RR′, a C1 to C60 alkyl, a C6 to C60 aryl, and a C2 to C60 heteroaryl.
According to an exemplary embodiment of the present specification, in Chemical Formula 1, R1 is -(L)m-(Z)n, and L, Z, m, and n are the same as those described above.
According to an exemplary embodiment of the present specification, in Chemical Formula 1, R3 is -(L)m-(Z)n, and L, Z, m, and n are the same as those described above.
According to an exemplary embodiment of the present specification, in Chemical Formula 1, R1 and R3 are each independently -(L)m-(Z)n, and L, Z, m, and n are the same as those described above.
According to another exemplary embodiment of the present specification, L is selected from the group consisting of a direct bond; a substituted or unsubstituted phenylene; a substituted or unsubstituted biphenylene; a substituted or unsubstituted terphenylene; a substituted or unsubstituted naphthylene; a substituted or unsubstituted anthrylene; a substituted or unsubstituted fluorenylene; a substituted or unsubstituted pyridylene; a substituted or unsubstituted triazinylene; a substituted or unsubstituted pyrimidylene; a substituted or unsubstituted quinazolinylene; a substituted or unsubstituted imidazopyridylene; a substituted or unsubstituted benzimidazolylene; a substituted or unsubstituted benzothiazolylene; and a substituted or unsubstituted carbazolylene,
when L is substituted, the substituent is one or more substituents selected from the group consisting of deuterium, halogen, —SiRR′R″, —P(═O)RR′, a substituted or unsubstituted C1 to C60 alkyl, a substituted or unsubstituted C6 to C60 aryl, and a substituted or unsubstituted C2 to C60 heteroaryl, and
R, R′, and R″ are the same as or different from each other, and are each independently hydrogen; deuterium; a substituted or unsubstituted C1 to C60 alkyl; a substituted or unsubstituted C6 to C60 aryl; or a substituted or unsubstituted C2 to C60 heteroaryl.
According to another exemplary embodiment of the present specification, L is selected from the group consisting of a direct bond; phenylene; biphenylene; terphenylene; naphthylene; anthrylene; fluorenylene; pyridylene; triazinylene; pyrimidylene; quinazolinylene; imidazopyridylene; benzimidazolylene; benzothiazolylene; and carbazolylene.
According to still another exemplary embodiment of the present specification, Z is selected from the group consisting of hydrogen; deuterium; halogen; —P(═O)R15R16; —SiR17R18R19; a substituted or unsubstituted methyl; a substituted or unsubstituted ethyl; a substituted or unsubstituted phenyl; a substituted or unsubstituted naphthyl; a substituted or unsubstituted biphenyl; a substituted or unsubstituted phenanthrenyl; a substituted or unsubstituted pyridyl; a substituted or unsubstituted carbazolyl; a substituted or unsubstituted pyrenyl; a substituted or unsubstituted triphenylenyl; a substituted or unsubstituted phenanthrolinyl; a substituted or unsubstituted imidazopyridyl; a substituted or unsubstituted benzothiazolyl; a substituted or unsubstituted fluorenyl; a substituted or unsubstituted dimethylfluorenyl; a substituted or unsubstituted benzofluorenyl; a substituted or unsubstituted dimethylbenzofluorenyl; a substituted or unsubstituted dibenzoselenophene group; a substituted or unsubstituted dibenzothiophene group; a substituted or unsubstituted dibenzofuran group; a substituted or unsubstituted spirobifluorenyl; a substituted or unsubstituted quinolyl; a substituted or unsubstituted diarylamine; and a substituted or unsubstituted arylheteroarylamine,
when Z is substituted, the substituent is one or more substituents selected from the group consisting of deuterium, halogen, —SiRR′R″, —P(═O)RR′, a substituted or unsubstituted C1 to C60 alkyl, a substituted or unsubstituted C6 to C60 aryl, and a substituted or unsubstituted C2 to C60 heteroaryl, and
R, R′, R″, and R15 to R19 are the same as or different from each other, and are each independently hydrogen; deuterium; a substituted or unsubstituted C1 to C60 alkyl; a substituted or unsubstituted C6 to C60 aryl; or a substituted or unsubstituted C2 to C60 heteroaryl.
According to yet another exemplary embodiment of the present specification, Z is selected from the group consisting of hydrogen; deuterium; halogen; —P(═O)R15R16; —SiR17R18R19; a substituted or unsubstituted methyl; a substituted or unsubstituted ethyl; a substituted or unsubstituted phenyl; a substituted or unsubstituted naphthyl; a substituted or unsubstituted biphenyl; a substituted or unsubstituted phenanthrenyl; a substituted or unsubstituted pyridyl; a substituted or unsubstituted carbazolyl; a substituted or unsubstituted pyrenyl; a substituted or unsubstituted triphenylenyl; a substituted or unsubstituted phenanthrolinyl; a substituted or unsubstituted imidazopyridyl; a substituted or unsubstituted benzothiazolyl; a substituted or unsubstituted fluorenyl; a substituted or unsubstituted dimethylfluorenyl; a substituted or unsubstituted benzofluorenyl; a substituted or unsubstituted dimethylbenzofluorenyl; a substituted or unsubstituted dibenzoselenophene group; a substituted or unsubstituted dibenzothiophene group; a substituted or unsubstituted dibenzofuran group; a substituted or unsubstituted spirobifluorenyl; a substituted or unsubstituted quinolyl; a substituted or unsubstituted biphenylcarbazolylamine; a substituted or unsubstituted biphenylfluorenylamine; a substituted or unsubstituted diphenylamine; and a substituted or unsubstituted dibiphenylamine,
when Z is substituted, the substituent is selected among one or more substituents selected from the group consisting of deuterium, halogen, —SiRR′R″, —P(═O)RR′, a substituted or unsubstituted C1 to C60 alkyl, a substituted or unsubstituted C6 to C60 aryl, and a substituted or unsubstituted C2 to C60 heteroaryl, and
R, R′, R″, and R15 to R19 are the same as or different from each other, and are each independently hydrogen; deuterium; a substituted or unsubstituted C1 to C60 alkyl; a substituted or unsubstituted C6 to C60 aryl; or a substituted or unsubstituted C2 to C60 heteroaryl.
According to still yet another exemplary embodiment of the present specification, Z is selected from the group consisting of hydrogen; deuterium; halogen; —P(═O)R15R16; —SiR17R18R19; methyl; ethyl; phenyl; naphthyl; biphenyl; phenanthrenyl; pyridyl; carbazolyl; pyrenyl; triphenylenyl; phenanthrolinyl; imidazopyridyl; benzothiazolyl; fluorenyl; dimethylfluorenyl; benzofluorenyl; dimethylbenzofluorenyl; a dibenzoselenophene group; a dibenzothiophene group; a dibenzofuran group; spirobifluorenyl; quinolyl; biphenylcarbazolylamine; biphenylfluorenylamine; diphenylamine; and dibiphenylamine, and
R15 to R19 are the same as or different from each other, and are each independently hydrogen; deuterium; a substituted or unsubstituted C1 to C60 alkyl; a substituted or unsubstituted C6 to C60 aryl; or a substituted or unsubstituted C2 to C60 heteroaryl.
According to further another exemplary embodiment of the present specification, R15 to R19 are the same as or different from each other, and each independently hydrogen; deuterium; or a substituted or unsubstituted phenyl.
According to still further another exemplary embodiment of the present specification, R15 to R19 are the same as or different from each other, and each independently hydrogen; deuterium; or phenyl.
According to an exemplary embodiment of the present specification, Chemical Formula 1 may be represented by the following Chemical Formula 2 or 3.
In Chemical Formulae 2 and 3, the definitions of R1 to R9 are the same as those defined in Chemical Formula 1.
According to an exemplary embodiment of the present specification, Chemical Formula 1 may be represented by any one of the following Formulae 4 to 6.
In Chemical Formulae 4 to 6,
E is selected from the group consisting of hydrogen; deuterium; —SiR20R21R22; —P(═O)R23R24; a substituted or unsubstituted C1 to C60 alkyl; a substituted or unsubstituted C6 to C60 aryl; a substituted or unsubstituted C2 to C60 heteroaryl; and an amine which is unsubstituted or substituted with one or more substituents selected from a substituted or unsubstituted C1 to C60 alkyl, a substituted or unsubstituted C6 to C60 aryl, and a substituted or unsubstituted C2 to C60 heteroaryl,
r is an integer of 1 to 5,
when r is 2 or more, E's are the same as or different from each other,
R20 to R24 are the same as or different from each other, and are each independently hydrogen; deuterium; a substituted or unsubstituted C1 to C60 alkyl; a substituted or unsubstituted C6 to C60 aryl; or a substituted or unsubstituted C2 to C60 heteroaryl,
L is selected from the group consisting of a direct bond; a substituted or unsubstituted C6 to C60 arylene; and a substituted or unsubstituted C2 to C60 heteroarylene,
m is an integer of 1 to 3,
n is an integer of 1 to 3,
Z is selected from the group consisting of hydrogen; deuterium; —P(═O)R15R16; —SiR17R18R19; a substituted or unsubstituted C1 to C60 alkyl; a substituted or unsubstituted C6 to C60 aryl; a substituted or unsubstituted C2 to C60 heteroaryl; and an amine which is unsubstituted or substituted with one or more substituents selected from a substituted or unsubstituted C1 to C60 alkyl, a substituted or unsubstituted C6 to C60 aryl, and a substituted or unsubstituted C2 to C60 heteroaryl,
when m is 2 or more, L's are the same as or different from each other,
when n is 2 or more, Z's are the same as or different from each other,
R15 to R19 are the same as or different from each other, and are each independently hydrogen; deuterium; a substituted or unsubstituted C1 to C60 alkyl; a substituted or unsubstituted C6 to C60 aryl; or a substituted or unsubstituted C2 to C60 heteroaryl, and the definitions of R2 and R4 to R9 are the same as those defined in Formula 1.
According to an exemplary embodiment of the present specification, Chemical Formula 1 may be represented by the following Chemical Formula 7.
In Chemical Formula 7,
A is a direct bond; or a substituted or unsubstituted C6 to C60 arylene,
Y1 and Y2 are the same as or different from each other, and are each independently selected from the group consisting of hydrogen; deuterium; halogen; SiR25R26R27; —P(═O)R28R29; a substituted or unsubstituted C1 to C60 alkyl; a substituted or unsubstituted C6 to C60 aryl; a substituted or unsubstituted C2 to C60 heteroaryl; and an amine which is unsubstituted or substituted with one or more substituents selected from a substituted or unsubstituted C1 to C60 alkyl, a substituted or unsubstituted C6 to C60 aryl, and a substituted or unsubstituted C2 to C60 heteroaryl,
p and q are the same as or different from each other, and are each an integer of 1 to 4,
when p is 2 or more, Y1's are the same as or different from each other,
when q is 2 or more, Y2's are the same as or different from each other,
at least one of Y1 and Y2 is linked to A,
R25 to R29 are the same as or different from each other, and are each independently hydrogen; deuterium; a substituted or unsubstituted C1 to C60 alkyl; a substituted or unsubstituted C6 to C60 aryl; or a substituted or unsubstituted C2 to C60 heteroaryl, and
the definitions of X1 and X2 are the same as those defined in Chemical Formula 1.
According to another exemplary embodiment of the present specification, A is a direct bond; a substituted or unsubstituted phenylene; a substituted or unsubstituted biphenylene; or a substituted or unsubstituted terphenylene.
According to still another exemplary embodiment of the present specification, A is a direct bond; phenylene; biphenylene; or terphenylene.
According to an exemplary embodiment of the present application, the hetero-cyclic compound represented by Chemical Formula 1 is selected from the following compounds.
According to an exemplary embodiment of the present specification, provided is an organic light emitting device including the hetero-cyclic compound represented by Chemical Formula 1.
Specifically, the organic light emitting device according to the present specification includes a positive electrode, a negative electrode, and one or more organic material layers provided between the positive electrode and the negative electrode, in which one or more of the organic material layers include the above-described hetero-cyclic compound represented by Chemical Formula 1.
According to
The organic light emitting device according to the present specification may be manufactured by the materials and methods known in the art, except that one or more layers of the organic material layers include the hetero-cyclic compound represented by Chemical Formula 1.
The hetero-cyclic compound represented by Chemical Formula 1 may alone constitute one or more layers of the organic material layers of the organic light emitting device. However, the hetero-cyclic compound represented by Chemical Formula 1 may be mixed with another material, if necessary, to constitute an organic material layer.
The hetero-cyclic compound represented by Chemical Formula 1 may be used as a material for an electron transporting layer, a hole blocking layer, and a light emitting layer, and the like in an organic light emitting device. As an example, the hetero-cyclic compound represented by Chemical Formula 1 may be used as a material for the electron transporting layer of the organic light emitting device.
Since the hetero-cyclic compound represented by Chemical Formula 1 includes two N (nitrogen) atoms which may attract electrons, the hetero-cyclic compound easily transfers electrons.
Further, the hetero-cyclic compound represented by Chemical Formula 1 has a structural form in which the compound may be stacked between molecules due to the strong planarity when an organic light emitting device is manufactured, and thus the electron mobility is high.
In the organic light emitting device according to the present specification, materials other than the hetero-cyclic compound represented by Chemical Formula 1 will be exemplified below, but these materials are illustrative only and are not intended to limit the scope of the present application, and may be replaced with materials publicly known in the art.
As a material for the positive electrode, materials having a relatively high work function may be used, and a transparent conductive oxide, a metal or a conductive polymer, and the like may be used.
As a material for the negative electrode, materials having a relatively low work function may be used, and a metal, a metal oxide, or a conductive polymer, and the like may be used.
As a hole injection material, a publicly-known hole injection material may also be used, and it is possible to use, for example, a phthalocyanine compound such as copper phthalocyanine disclosed in U.S. Pat. No. 4,356,429 or starburst-type amine derivatives described in the document [Advanced Material, 6, p. 677 (1994)], for example, tris(4-carbazoyl-9-ylphenyl)amine (TCTA), 4,4′,4″-tris[phenyl(m-tolyl)amino]triphenylamine (m-MTDATA), 1,3,5-tris[4-(3-methylphenylphenylamino)phenyl]benzene (m-MTDAPB), polyaniline/dodecylbenzenesulfonic acid or poly(3,4-ethylenedioxythiophene)/poly(4-styrenesulfonate), which is a soluble conductive polymer, polyaniline/camphor sulfonic acid (or polyaniline/poly(4-styrene-sulfonate), and the like.
As the hole transporting material, a pyrazoline derivative, an arylamine-based derivative, a stilbene derivative, a triphenyldiamine derivative, and the like may be used, and a low-molecular weight or polymer material may also be used.
As the electron transporting material, it is possible to use an oxadiazole derivative, anthraquinodimethane and a derivative thereof, benzoquinone and a derivative thereof, naphthoquinone and a derivative thereof, anthraquinone and a derivative thereof, tetracyanoanthraquinodimethane and a derivative thereof, a fluorenone derivative, diphenyldicyanoethylene and a derivative thereof, a diphenoquinone derivative, a metal complex of 8-hydroxyquinoline and a derivative thereof, and the like, and a low-molecular weight material and a polymer material may also be used.
As the electron injection material, for example, LiF is typically used in the art, but the present specification is not limited thereto.
As the light emitting material, a red, green, or blue light emitting material may be used, and if necessary, two or more light emitting materials may be mixed and used. Further, as the light emitting material, a fluorescent material may also be used, but a phosphorescent material may also be used. As the light emitting material, it is also possible to use alone a material which emits light by combining holes and electrons each injected from the positive electrode and the negative electrode, but materials in which both a host material and a dopant material are involved in light emission may also be used.
Hereinafter, the present specification will be described in more detail through the Examples, but these are provided only for exemplifying the present specification, and are not for limiting the scope of the present specification.
The above-described compounds may be prepared based on the Preparation Examples to be described below. Representative examples will be described in the Preparation Examples to be described below, but if necessary, a substituent may be added or excluded, and the position of the substituent may be changed. Further, a starting material, a reactant, reaction conditions, and the like may be changed based on the technology known in the art. A person with ordinary skill in the art may change the kind or position of substituents at the other positions, if necessary, by using the technology known in the art.
The substituent may be bonded by a method known in the art, and the position of the substituent or the number of substituents may be changed according to the technology known in the art.
For example, as the hetero-cyclic compound represented by Chemical Formula 2, a core structure may be prepared as in the following Formula 1.
In Formula 1, R′″ is the same as Z defined in Chemical Formula 1, and L is a substituted or unsubstituted phenyl. Formula 1 is an example of the reaction in which a substituent is bonded to the R1 position in the core structure of Chemical Formula 2.
In addition, as the hetero-cyclic compound represented by Chemical Formula 3, a core structure may be prepared as in the following Formula 2.
In Formula 2, R′″ is the same as Z defined in Chemical Formula 1, and L is a substituted or unsubstituted phenyl. Formula 2 is an example of the reaction in which a substituent is bonded to the R1 position in the core structure of Chemical Formula 3.
Preparation of Compound A-3
Ethanol (1,100 ml) was put into compounds 2-amino pyridine (27.0 g, 286.6 mmol, 1 eq.) and 2-bromo-2′-nitroacetophenone (70.0 g, 286.6 mmol, 1 eq.), and the resulting mixture was refluxed. After the reaction was terminated, the resulting product was cooled to normal temperature and extracted with ethyl acetate/water, the organic layer was dried over anhydrous magnesium sulfate, and then the solvent was removed by using a rotary evaporator. The resulting product was purified with column chromatography using dichloromethane and ethyl acetate to obtain 30.3 g (44%) of Target Compound A-3.
Preparation of Compound A-2
Compound A-3 (30.3 g, 126.7 mmol, 1 eq.) and tin (II) chloride dihydrate (142.9 g, 633.3 mmol, 5 eq.) were dissolved in ethanol, and the resulting solution was refluxed under injection of nitrogen. After the reaction was terminated, the solution was cooled to normal temperature, ice was added thereto, and then the pH was adjusted to approximately 8 by slowly adding sodium bicarbonate thereto. A celite bed was laid down, the filtered filtrate was extracted with ethyl acetate/water, the organic layer was dried over anhydrous magnesium sulfate, and then the solvent was removed by using a rotary evaporator. The resulting product was purified with column chromatography using dichloromethane and hexane to obtain 13.75 g (52%) of Target Compound A-2.
Preparation of Compound A-1
Compound A-2 (13.75 g, 65.71 mmol, 1 eq.), 4-bromobenzaldehyde (18.24 g, 98.57 mmol, 1.5 eq.), and p-toluenesulfonic acid (11.3 g, 65.71 mmol, 1 eq.) were dissolved in toluene, and then the resulting solution was refluxed. After the reaction was terminated, the solution was cooled to normal temperature, toluene was first removed, the resulting product was extracted with ethyl acetate/water, the organic layer was dried over anhydrous magnesium sulfate, and then the solvent was removed by using a rotary evaporator. The resulting product was purified with column chromatography using dichloromethane and methanol to obtain 9.8 g (40%) of Target Compound A-1.
Preparation of Compound 6
Compound A-1 (1.0 g, 2.67 mmol, 1 eq.), 9-phenanthracenylboronic acid (0.58 g, 2.93 mmol, 1.1 eq.), tetrakis(triphenylphosphine)palladium (0) (0.15 g, 0.13 mmol, 0.05 eq.), potassium carbonate (0.65 g, 4.72 mmol, 2 eq.), and 1,4-dioxane/water (60 ml) were mixed, and the resulting mixture was refluxed and stirred. After the reaction was terminated, the resulting product was cooled to normal temperature, a solid produced at this time was filtered, and the filtered solid was purified with column chromatography using dichloromethane and methanol to obtain 0.72 g (yield of 57%) of Target Compound 6.
Preparation of Compound A
Compound A-1 (6.1 g, 16.33 mmol, 1 eq.), bis(pinacolato)diboron (6.2 g, 24.5 mmol, 1.5 eq.), [1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium (II) (0.58 g, 0.82 mmol, 0.05 eq.), and potassium acetate (4.8 g, 48.99 mmol, 3 eq.) were put and dissolved in 1,4-dioxane, and then the resulting solution was stirred for 18 hours or more while being maintained at 100° C. After the reaction was terminated, the resulting product was cooled to normal temperature and extracted with ethyl acetate/water, the organic layer was dried over anhydrous magnesium sulfate, and then the solvent was removed by using a rotary evaporator. The solid produced at this time was filtered and purified with ethyl acetate to obtain 4.88 g (yield of 71%) of Target Compound A.
Preparation of Compound 19
Compound A (1.0 g, 2.37 mmol, 1 eq.), 9,9′-(5-bromo-1,3-phenylene)bis(9H-carbazole) (1.27 g, 2.61 mmol, 1.1 eq.), tetrakis(triphenylphosphine)palladium (0) (0.14 g, 0.12 mmol, 0.05 eq.), potassium carbonate (0.66 g, 4.74 mmol, 2 eq.), and 1,4-dioxane/water (60 ml) were mixed, and the resulting mixture was refluxed and stirred. After the reaction was terminated, the resulting product was cooled to normal temperature, a solid produced at this time was filtered, and the filtered solid was purified with column chromatography using dichloromethane and methanol to obtain 1.13 g (yield of 69%) of Target Compound 19.
Preparation of Compound B-1
Compound A-2 (13.75 g, 65.71 mmol, 1 eq.), 3-bromobenzaldehyde (18.24 g, 98.57 mmol, 1.5 eq.), and p-toluenesulfonic acid (11.3 g, 65.71 mmol, 1 eq.) were dissolved in toluene, and then the resulting solution was refluxed. After the reaction was terminated, the solution was cooled to normal temperature, toluene was first removed, the resulting product was extracted with ethyl acetate/water, the organic layer was dried over anhydrous magnesium sulfate, and then the solvent was removed by using a rotary evaporator. The resulting product was purified with column chromatography using dichloromethane and methanol to obtain 9.34 g (38%) of Target Compound B-1.
Preparation of Compound B
Compound B-1 (6.1 g, 16.33 mmol, 1 eq.), bis(pinacolato)diboron (6.2 g, 24.5 mmol, 1.5 eq.), [1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium (II) (0.58 g, 0.82 mmol, 0.05 eq.), and potassium acetate (4.8 g, 48.99 mmol, 3 eq.) were put and dissolved in 1,4-dioxane, and then the resulting solution was stirred for 18 hours or more while being maintained at 100° C. After the reaction was terminated, the resulting product was cooled to normal temperature and extracted with ethyl acetate/water, the organic layer was dried over anhydrous magnesium sulfate, and then the solvent was removed by using a rotary evaporator. The solid produced at this time was filtered and purified with ethyl acetate to obtain 4.4 g (yield of 64%) of Target Compound B.
Preparation of Compound 42
Compound B (1.0 g, 2.37 mmol, 1 eq.), 2-chloro-4,6-diphenyl-1,3,5-triazine (0.70 g, 2.61 mmol, 1.1 eq.), tetrakis(triphenylphosphine)palladium (0) (0.14 g, 0.12 mmol, 0.05 eq.), potassium carbonate (0.66 g, 4.74 mmol, 2 eq.), and 1,4-dioxane/water (60 ml) were mixed, and the resulting mixture was refluxed and stirred. After the reaction was terminated, the resulting product was cooled to normal temperature, a solid produced at this time was filtered, and the filtered solid was purified with column chromatography using dichloromethane and methanol to obtain 0.65 g (yield of 52%) of Target Compound 42.
Preparation of Compound 109
Compound A (1.0 g, 2.37 mmol, 1 eq.), 2-bromo-4,6-diphenylpyridine (0.81 g, 2.61 mmol, 1.1 eq.), tetrakis(triphenylphosphine)palladium (0) (0.31 g, 0.12 mmol, 0.05 eq.), potassium carbonate (0.65 g, 4.72 mmol, 2 eq.), and 1,4-dioxane/water (60 ml) were mixed, and the resulting mixture was refluxed. After the reaction was terminated, the resulting product was cooled to normal temperature, and a solid produced at this time was filtered and washed with water. The filtered solid was purified with column chromatography using dichloromethane and methanol to obtain 0.53 g (yield of 43%) of Target Compound 109.
Preparation of Compound 111
Compound A (1.0 g, 2.37 mmol, 1 eq.), 4-bromo-2,6-diphenylpyrimidine (0.81 g, 2.61 mmol, 1.1 eq.), tetrakis(triphenylphosphine)palladium (0) (0.31 g, 0.12 mmol, 0.05 eq.), potassium carbonate (0.65 g, 4.72 mmol, 2 eq.), and 1,4-dioxane/water (60 ml) were mixed, and the resulting mixture was refluxed. After the reaction was terminated, the resulting product was cooled to normal temperature, and a solid produced at this time was filtered and washed with water. The filtered solid was purified with column chromatography using dichloromethane and methanol to obtain 0.53 g (yield of 43%) of Target Compound 111.
Preparation of Compound C-4
Ethanol (1,100 ml) was put into compounds 2-amino pyridine (27.0 g, 286.6 mmol, 1 eq.) and 2-bromoacetophenone (57 g, 286.6 mmol, 1 eq.), and the resulting mixture was refluxed. After the reaction was terminated, the resulting product was cooled to normal temperature and extracted with ethyl acetate/water, the organic layer was dried over anhydrous magnesium sulfate, and then the solvent was removed by using a rotary evaporator. The resulting product was purified with column chromatography using dichloromethane and ethyl acetate to obtain 18.37 g (yield of 33%) of Target Compound C-4.
Preparation of Compound C-3
Compound C-4 (18 g, 92.67 mmol, 1 eq.) was dissolved in acetic acid (675 ml), and then a solution of NaNO2 (9.59 g, 139.0 mmol, 1.5 eq.) saturated in water was slowly added thereto at normal temperature. When the color was gradually changed to dark green, an ICE-bath was used to precipitate a solid, and then it was confirmed that the reaction has been terminated, and the solid was filtered. The filtered solid was washed with an excessive amount of water and normal hexane to obtain 22 g (yield of 70%) of Target Compound C-3.
Preparation of Compound C-2
Acetic acid and ethanol was put into a flask (550 ml) at a ratio of 1:1, and then Zn (44 g) was metered in an amount of twice the amount of Compound C-3 and added thereto. After the mixture was temporarily stirred at normal temperature, Compound C-3 (22 g, 91.96 mmol, 1 eq.) was gradually added thereto in a cooled state by using an ICE-bath, Compound C-3 was completely added thereto, and then the resulting mixture was stirred at normal temperature. When the reaction was terminated, the pH was adjusted to 13 by using a sodium hydroxide solution, the resulting product was extracted with ethyl acetate/water, the organic layer was dried over anhydrous magnesium sulfate, and then the solvent was removed by using a rotary evaporator. A solid precipitated at this time was filtered to obtain 19 g (99%) of Target Compound C-2.
Preparation of Compound C-1
Compound C-2 (10 g, 47.79 mmol, 1 eq.) and 4-bromobenzaldehyde (17.68 g, 95.58 mmol, 2 eq.) were dissolved in 1,2-dichlorobenzene (100 ml), trifluoromethanesulfonic acid (21.51 g, 143.37 mmol, 3 eq.) was slowly added thereto, and the resulting mixture was refluxed. When the reaction was terminated, the resulting product was cooled to normal temperature, and then neutralized by using NaHCO3, a very excessive amount of dichloromethane was used to extract the product, and then the organic layer was removed. The remaining 1,2-dichlorobenzene was removed by distillation, a solid produced at this time was filtered and washed with ethyl acetate/normal hexane to obtain 9.48 g (53%) of Target Compound C-1.
Preparation of Compound C
Compound C-1 (5 g, 13.36 mmol, 1 eq.), bis(pinacolato)diboron (5.09 g, 20.05 mmol, 1.5 eq.), [1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium (II) (0.49 g, 0.67 mmol, 0.05 eq.), and potassium acetate (3.9 g, 40.08 mmol, 3 eq.) were put and dissolved in 1,4-dioxane, and then the resulting solution was refluxed. After the reaction was terminated, the resulting product was cooled to normal temperature and extracted with dichloromethane/water, the organic layer was dried over anhydrous magnesium sulfate, and then the solvent was removed by using a rotary evaporator. The resulting product was purified with a simple silica gel filter to obtain 5.07 g (yield of 90%) of Target Compound C.
Preparation of Compound 344
Compound C (5 g, 11.87 mmol, 1 eq.), Compound C-1 (4.89 g, 13.05 mmol, 1.1 eq.), tetrakis(triphenylphosphine)palladium (0) (0.69 g, 0.59 mmol, 0.05 eq.), potassium carbonate (3.28 g, 23.74 mmol, 2 eq.), and 1,4-dioxane/water (60 ml) were mixed, and the resulting mixture was refluxed. After the reaction was terminated, the resulting product was cooled to normal temperature, and a solid produced at this time was filtered and washed with water. The filtered solid was purified by using methanol/normal hexane to obtain 4.19 g (yield of 60%) of Target Compound 344.
Preparation of Compound 347
Compound C (5 g, 11.87 mmol, 1 eq.), Compound A-1 (4.89 g, 13.05 mmol, 1.1 eq.), tetrakis(triphenylphosphine)palladium (0) (0.69 g, 0.59 mmol, 0.05 eq.), potassium carbonate (3.28 g, 23.74 mmol, 2 eq.), and 1,4-dioxane/water (60 ml) were mixed, and the resulting mixture was refluxed. After the reaction was terminated, the resulting product was cooled to normal temperature, and a solid produced at this time was filtered and washed with water. The filtered solid was purified by using methanol/normal hexane to obtain 4.05 g (yield of 58%) of Target Compound 347.
Preparation of Compound 367
Compound C (5 g, 11.87 mmol, 1 eq.) was dissolved in benzonitrile (75 ml), NiCl2 (0.77 g, 5.93 mmol, 0.5 eq.) was added thereto, and then the resulting mixture was stirred at 180° C. for 1 hour. Ethoxydiphenylphosphane (13.66 g, 59.35 mmol, 5 eq.) was added thereto, and the resulting mixture was continuously stirred while being maintained at 180° C. After the reaction was terminated, the resulting product was cooled to normal temperature and extracted with ethyl acetate/water, the organic layer was dried over anhydrous magnesium sulfate, and then the solvent was removed by using a rotary evaporator.
The resulting product was purified with column chromatography using dichloromethane/ethyl acetate to obtain 5.06 g (yield of 52%) of Target Compound 367.
Preparation of Compound 373
Compound C (5 g, 11.87 mmol, 1 eq.), 2-chloro-4,6-diphenyl-1,3,5-triazine (3.5 g, 13.06 mmol, 1.1 eq.), tetrakis(triphenylphosphine)palladium (0) (0.69 g, 0.59 mmol, 0.05 eq.), potassium carbonate (3.28 g, 23.74 mmol, 2 eq.), and 1,4-dioxane/water (60 ml) were mixed, and the resulting mixture was refluxed. After the reaction was terminated, the resulting product was cooled to normal temperature, and a solid produced at this time was filtered and washed with water. The filtered solid was purified by using methanol/normal hexane to obtain 4.3 g (yield of 69%) of Target Compound 373.
Preparation of Compound 461
Compound C (5 g, 11.87 mmol, 1 eq.), 2-bromo-4,6-diphenylpyrimidine (4.06 g, 13.06 mmol, 1.1 eq.), tetrakis(triphenylphosphine)palladium (0) (0.69 g, 0.59 mmol, 0.05 eq.), potassium carbonate (3.28 g, 23.74 mmol, 2 eq.), and 1,4-dioxane/water (60 ml) were mixed, and the resulting mixture was refluxed. After the reaction was terminated, the resulting product was cooled to normal temperature, and a solid produced at this time was filtered and washed with water. The filtered solid was purified by using methanol/normal hexane to obtain 3.93 g (yield of 63%) of Target Compound 461.
Preparation of Compound 463
Compound C (5 g, 11.87 mmol, 1 eq.), 4-bromo-2,6-diphenylpyrimidine (4.06 g, 13.06 mmol, 1.1 eq.), tetrakis(triphenylphosphine)palladium (0) (0.69 g, 0.59 mmol, 0.05 eq.), potassium carbonate (3.28 g, 23.74 mmol, 2 eq.), and 1,4-dioxane/water (60 ml) were mixed, and the resulting mixture was refluxed. After the reaction was terminated, the resulting product was cooled to normal temperature, and a solid produced at this time was filtered and washed with water. The filtered solid was purified by using methanol/normal hexane to obtain 3.8 g (yield of 61%) of Target Compound 463.
Preparation of Compound 468
Compound C (5 g, 11.87 mmol, 1 eq.), 4-([1,1′-biphenyl]-4-yl)-6-bromo-2-phenylpyrimidine (5.06 g, 13.06 mmol, 1.1 eq.), tetrakis(triphenylphosphine)palladium (0) (0.69 g, 0.59 mmol, 0.05 eq.), potassium carbonate (3.28 g, 23.74 mmol, 2 eq.), and 1,4-dioxane/water (60 ml) were mixed, and the resulting mixture was refluxed. After the reaction was terminated, the resulting product was cooled to normal temperature, and a solid produced at this time was filtered and washed with water. The filtered solid was purified by using methanol/normal hexane to obtain 5.07 g (yield of 71%) of Target Compound 468.
Preparation of Compound 478
Compound C (5 g, 11.87 mmol, 1 eq.), 4-([1,1′-biphenyl]-4-yl)-6-bromo-2-phenylpyrimidine (6.05 g, 13.06 mmol, 1.1 eq.), tetrakis(triphenylphosphine)palladium (0) (0.69 g, 0.59 mmol, 0.05 eq.), potassium carbonate (3.28 g, 23.74 mmol, 2 eq.), and 1,4-dioxane/water (60 ml) were mixed, and the resulting mixture was refluxed. After the reaction was terminated, the resulting product was cooled to normal temperature, and a solid produced at this time was filtered and washed with water. The filtered solid was purified by using methanol/normal hexane to obtain 6.6 g (yield of 82%) of Target Compound 478.
Preparation of Compound 497
Compound C (5 g, 11.87 mmol, 1 eq.), 4-([1,1′-biphenyl]-4-yl)-2-chloroquinazoline (4.14 g, 13.06 mmol, 1.1 eq.), tetrakis(triphenylphosphine)palladium (0) (0.69 g, 0.59 mmol, 0.05 eq.), potassium carbonate (3.28 g, 23.74 mmol, 2 eq.), and 1,4-dioxane/water (60 ml) were mixed, and the resulting mixture was refluxed. After the reaction was terminated, the resulting product was cooled to normal temperature, and a solid produced at this time was filtered and washed with water. The filtered solid was purified by using methanol/normal hexane to obtain 4.58 g (yield of 67%) of Target Compound 497.
Preparation of Compound 498
Compound C (5 g, 11.87 mmol, 1 eq.), 2-chloro-4-phenylquinazoline (3.14 g, 13.06 mmol, 1.1 eq.), tetrakis(triphenylphosphine)palladium (0) (0.69 g, 0.59 mmol, 0.05 eq.), potassium carbonate (3.28 g, 23.74 mmol, 2 eq.), and 1,4-dioxane/water (60 ml) were mixed, and the resulting mixture was refluxed. After the reaction was terminated, the resulting product was cooled to normal temperature, and a solid produced at this time was filtered and washed with water. The filtered solid was purified by using methanol/normal hexane to obtain 4.62 g (yield of 78%) of Target Compound 498.
Preparation of Compound D-1
Compound C-2 (10 g, 47.79 mmol, 1 eq.) and 3-bromobenzaldehyde (17.68 g, 95.58 mmol, 2 eq.) were dissolved in 1,2-dichlorobenzene (100 ml), trifluoromethanesulfonic acid (21.51 g, 143.37 mmol, 3 eq.) was slowly added thereto, and the resulting mixture was refluxed. When the reaction was terminated, the resulting product was cooled to normal temperature, and then neutralized by using NaHCO3, a very excessive amount of dichloromethane was used to extract the product, and then the organic layer was removed. The remaining 1,2-dichlorobenzene was removed by distillation, a solid produced at this time was filtered and washed with ethyl acetate/normal hexane to obtain 9.84 g (55%) of Target Compound D-1.
Preparation of Compound D
Compound D-1 (5 g, 13.36 mmol, 1 eq), bis(pinacolato)diboron (5.09 g, 20.05 mmol, 1.5 eq), [1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium (II) (0.49 g, 0.67 mmol, 0.05 eq.), and potassium acetate (3.9 g, 40.08 mmol, 3 eq.) were put and dissolved in 1,4-dioxane, and then the resulting solution was refluxed. After the reaction was terminated, the resulting product was cooled to normal temperature and extracted with dichloromethane/water, the organic layer was dried over anhydrous magnesium sulfate, and then the solvent was removed by using a rotary evaporator. The resulting product was purified with a simple silica gel filter to obtain 5.2 g (yield of 92%) of Target Compound D.
Preparation of Compound 537
Compound D (5 g, 11.87 mmol, 1 eq.), 5-bromo-2,4,6-triphenylpyrimidine (5.06 g, 13.06 mmol, 1.1 eq.), tetrakis(triphenylphosphine)palladium (0) (0.69 g, 0.59 mmol, 0.05 eq.), potassium carbonate (3.28 g, 23.74 mmol, 2 eq.), and 1,4-dioxane/water (60 ml) were mixed, and the resulting mixture was refluxed. After the reaction was terminated, the resulting product was cooled to normal temperature, and a solid produced at this time was filtered and washed with water. The filtered solid was purified by using methanol/normal hexane to obtain 5.36 g (yield of 75%) of Target Compound 537.
Preparation of Compound 581
Compound D (5 g, 11.87 mmol, 1 eq.), 2-(4-bromophenyl)imidazo[1,2-a]pyridine (3.57 g, 13.06 mmol, 1.1 eq.), tetrakis(triphenylphosphine)palladium (0) (0.69 g, 0.59 mmol, 0.05 eq.), potassium carbonate (3.28 g, 23.74 mmol, 2 eq.), and 1,4-dioxane/water (60 ml) were mixed, and the resulting mixture was refluxed. After the reaction was terminated, the resulting product was cooled to normal temperature, and a solid produced at this time was filtered and washed with water. The filtered solid was purified by using methanol/normal hexane to obtain 4.57 g (yield of 79%) of Target Compound 581.
Preparation of Compound 601
Compound C (5 g, 11.87 mmol, 1 eq.), 2-(4-bromophenyl)-1-phenyl-1H-benzo[d]imidazole (4.56 g, 13.06 mmol, 1.1 eq.), tetrakis(triphenylphosphine)palladium (0) (0.69 g, 0.59 mmol, 0.05 eq.), potassium carbonate (3.28 g, 23.74 mmol, 2 eq.), and 1,4-dioxane/water (60 ml) were mixed, and the resulting mixture was refluxed. After the reaction was terminated, the resulting product was cooled to normal temperature, and a solid produced at this time was filtered and washed with water. The filtered solid was purified by using methanol/normal hexane to obtain 5.29 g (yield of 79%) of Target Compound 601.
Preparation of Compound 642
Compound C (5 g, 11.87 mmol, 1 eq.), 4-(4-bromophenyl)-2,6-diphenylpyrimidine (5.06 g, 13.06 mmol, 1.1 eq.), tetrakis(triphenylphosphine)palladium (0) (0.69 g, 0.59 mmol, 0.05 eq.), potassium carbonate (3.28 g, 23.74 mmol, 2 eq.), and 1,4-dioxane/water (60 ml) were mixed, and the resulting mixture was refluxed. After the reaction was terminated, the resulting product was cooled to normal temperature, and a solid produced at this time was filtered and washed with water. The filtered solid was purified by using methanol/normal hexane to obtain 5.37 g (yield of 75%) of Target Compound 642.
Preparation of Compound 678
Compound D-1 (5 g, 13.36 mmol, 1 eq.), (9-phenyl-9H-carbazol-3-yl)boronic acid (4.22 g, 14.70 mmol, 1.1 eq.), tetrakis(triphenylphosphine)palladium (0) (0.43 g, 0.37 mmol, 0.05 eq.), potassium carbonate (3.69 g, 26.72 mmol, 2 eq.), and 1,4-dioxane/water (60 ml) were mixed, and the resulting mixture was refluxed. After the reaction was terminated, the resulting product was cooled to normal temperature, and a solid produced at this time was filtered and washed with water. The filtered solid was purified by using methanol/normal hexane to obtain 5.52 g (yield of 77%) of Target Compound 678.
Preparation of Compound 688
Compound D-1 (5 g, 13.36 mmol, 1 eq.), (triphenylen-2-yl)boronic acid (4.0 g, 14.70 mmol, 1.1 eq.), tetrakis(triphenylphosphine)palladium (0) (0.43 g, 0.37 mmol, 0.05 eq.), potassium carbonate (3.69 g, 26.72 mmol, 2 eq.), and 1,4-dioxane/water (60 ml) were mixed, and the resulting mixture was refluxed. After the reaction was terminated, the resulting product was cooled to normal temperature, and a solid produced at this time was filtered and washed with water. The filtered solid was purified by using methanol/normal hexane to obtain 5.5 g (yield of 79%) of Target Compound 688.
Preparation of Compound 353
A preparation was performed in the same manner as in the preparation of Compound 373, except that 2-bromo-9,10-di(naphthalen-2-yl)anthracene was used instead of the compound 2-chloro-4,6-diphenyl-1,3,5-triazine in Preparation Example 9, thereby obtaining Target Compound 353.
Preparation of Compound 363
A preparation was performed in the same manner as in the preparation of Compound 537, except that 9-bromo-10-phenylanthracene was used instead of the compound 5-bromo-2,4,6-triphenylpyrimidine in Preparation Example 16, thereby obtaining Target Compound 363.
Preparation of Compound 365
A preparation was performed in the same manner as in the preparation of Compound 373, except that (4-bromophenyl)diphenylphosphine oxide was used instead of the compound 2-chloro-4,6-diphenyl-1,3,5-triazine in Preparation Example 9, thereby obtaining Target Compound 365.
Preparation of Compound 370
A preparation was performed in the same manner as in the preparation of Compound 367, except that D-1 was used instead of C-1 in Preparation Example 8, thereby obtaining Target Compound 370.
Preparation of Compound 372
A preparation was performed in the same manner as in the preparation of Compound 19, except that Compound D was used instead of Compound A in Preparation Example 2, thereby obtaining Target Compound 372.
Preparation of Compound 478
A preparation was performed in the same manner as in the preparation of Compound 373, except that 4-([1,1′-biphenyl]-4-yl)-6-(4-bromophenyl)-2-phenylpyrimidine was used instead of the compound 2-chloro-4,6-diphenyl-1,3,5-triazine in Preparation Example 9, thereby obtaining Target Compound 478.
Preparation of Compound 574
A preparation was performed in the same manner as in the preparation of Compound 537, except that 2-bromo-1,10-phenanthroline was used instead of the compound 5-bromo-2,4,6-triphenylpyrimidine in Preparation Example 16, thereby obtaining Target Compound 574.
Preparation of Compound 577
A preparation was performed in the same manner as in the preparation of Compound 373, except that 2-(4-bromophenyl)imidazo[1,2-a]pyridine was used instead of the compound 2-chloro-4,6-diphenyl-1,3,5-triazine in Preparation Example 9, thereby obtaining Target Compound 577.
Preparation of Compound 711
A preparation was performed in the same manner as in the preparation of Compound 373, except that (6-bromonaphthalen-2-yl)diphenylphosphine oxide was used instead of the compound 2-chloro-4,6-diphenyl-1,3,5-triazine in Preparation Example 9, thereby obtaining Target Compound 711.
Preparation of Compound 715
A preparation was performed in the same manner as in the preparation of Compound 537, except that 9-([1,1′-biphenyl]-4-yl)-10-bromoanthracene was used instead of the compound 5-bromo-2,4,6-triphenylpyrimidine in Preparation Example 16, thereby obtaining Target Compound 715.
Preparation of Compound 719
A preparation was performed in the same manner as in the preparation of Compound 537, except that 2-([1,1′-biphenyl]-4-yl)-4-chloro-6-phenyl-1,3,5-triazine was used instead of the compound 5-bromo-2,4,6-triphenylpyrimidine in Preparation Example 16, thereby obtaining Target Compound 719.
Preparation of Compounds E-3 and E-2
A compound 2-(4-bromophenyl)imidazo[1,2-a]pyridine (35 g, 128.14 mmol, 1 eq.) was dissolved in acetic acid (350 ml), and then a solution of NaNO2 (13.26 g, 192.27 mmol, 1.5 eq.) saturated in water was slowly added thereto at normal temperature. A solid was precipitated while the color was gradually changed to bright green, it was confirmed that the reaction was terminated with TLC, and E-3 was filtered.
Zn (17.5 g) was put into a flask including acetic acid and ethanol at a ratio of 1:1 (700 ml), and the resulting mixture was stirred at normal temperature for about 10 minutes. Compound E-3 was gradually added to the above flask in a state cooled to 0° C., Compound C-3 was completely added thereto, and then the resulting mixture was stirred at normal temperature. When the reaction was terminated, the pH was adjusted to 13 by using a sodium hydroxide solution, the resulting product was extracted with ethyl acetate/water, the organic layer was dried over anhydrous magnesium sulfate, and then the solvent was removed by using a rotary evaporator. A solid precipitated at this time was filtered to obtain 28.4 g (78%) of Target Compound E-2.
Preparation of Compound E-1
Compound E-2 (28.4 g, 98.56 mmol, 1 eq.) and benzaldehyde (20.91 g, 197.12 mmol, 2 eq.) were dissolved in 1,2-dichlorobenzene (280 ml), trifluoromethanesulfonic acid (29.58 g, 197.12 mmol, 2 eq.) was slowly added thereto, and then the resulting mixture was refluxed. When the reaction was terminated, the resulting product was cooled to normal temperature, and then neutralized by using NaHCO3, a very excessive amount of dichloromethane was used to extract the product, and then the organic layer was removed. The remaining 1,2-dichlorobenzene was removed by distillation, a solid produced at this time was filtered and washed with ethyl acetate/normal hexane to obtain 21 g (57%) of Target Compound E-1.
Preparation of Compound E
Compound E-1 (5 g, 13.36 mmol, 1 eq.), bis(pinacolato)diboron (5.09 g, 20.05 mmol, 1.5 eq.), [1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium (II) (0.49 g, 0.67 mmol, 0.05 eq.), and potassium acetate (3.9 g, 40.08 mmol, 3 eq.) were put and dissolved in 1,4-dioxane, and then the resulting solution was refluxed. After the reaction was terminated, the resulting product was cooled to normal temperature and extracted with dichloromethane/water, the organic layer was dried over anhydrous magnesium sulfate, and then the solvent was removed by using a rotary evaporator. The resulting product was purified with a simple silica gel filter to obtain 5 g (yield of 89%) of Target Compound E.
Preparation of Compound 722
Compound E (5 g, 11.87 mmol, 1 eq.), a compound 2-(4-bromophenyl)-1-phenyl-1H-benzo[d]imidazole (4.56 g, 13.05 mmol, 1.1 eq.), tetrakis(triphenylphosphine)palladium (0) (0.69 g, 0.59 mmol, 0.05 eq.), potassium carbonate (3.28 g, 23.74 mmol, 2 eq.), and 1,4-dioxane/water (60 ml) were mixed, and the resulting mixture was refluxed. After the reaction was terminated, the resulting product was cooled to normal temperature, and a solid produced at this time was filtered and washed with water. The filtered solid was purified by using methanol/normal hexane to obtain 4 g (yield of 43%) of Target Compound 722.
Preparation of Compound 723
A preparation was performed in the same manner as in the preparation of Compound 722, except that 4-([1,1′-biphenyl]-4-yl)-6-bromo-2-phenylpyrimidine was used instead of the compound 2-(4-bromophenyl)-1-phenyl-1H-benzo[d]imidazole in Preparation Example 33, thereby obtaining Target Compound 723.
Preparation of Compound 724
A preparation was performed in the same manner as in the preparation of Compound 722, except that 2-([1,1′-biphenyl]-4-yl)-4-chloro-6-phenyl-1,3,5-triazine was used instead of the compound 2-(4-bromophenyl)-1-phenyl-1H-benzo[d]imidazole in Preparation Example 33, thereby obtaining Target Compound 724.
Preparation of Compound F
A preparation was performed in the same manner as in the preparation of Compound A-1, except that 3,5-dibromobenzaldehyde was used instead of the compound 4-bromobenzaldehyde in Preparation Example 1, thereby obtaining Target Compound F.
Preparation of Compound 727
A preparation was performed in the same manner as in the preparation of Compound 6, except that dibenzo[b,d]thiophen-4-ylboronic acid was used instead of the compound phenanthren-9-ylboronic acid in Preparation Example 1, thereby obtaining Target Compound 727.
Preparation of Compound 729
A preparation was performed in the same manner as in the preparation of Compound 6, except that (9,9-dimethyl-9H-fluoren-2-yl)boronic acid was used instead of the compound phenanthren-9-ylboronic acid in Preparation Example 1, thereby obtaining Target Compound 729.
Preparation of Compound G
A preparation was performed in the same manner as in the preparation of Compound C-1, except that 3,5-dibromobenzaldehyde was used instead of the compound 4-bromobenzaldehyde in Preparation Example 6, thereby obtaining Target Compound G.
Preparation of Compound 730
Compound G (7 g, 15.44 mmol, 1 eq.), 9H-carbazole (5.67 g, 33.96 mmol, 2.2 eq.), Cu (3.92 g, 61.76 mmol, 4 eq.), K2CO3 (12.8 g, 92.64 mmol, 6 eq.), and 100 ml of 1,2-dichlorobenzene were sequentially mixed, and then the resulting mixture was refluxed and stirred. When the reaction was terminated, the resulting product was cooled to normal temperature and filtered as it is, and a filtrate obtained at this time was concentrated to obtain a solid. The resulting product was purified by using appropriate amounts of MC and normal hexane to obtain 8.7 g (90%) of Target Compound 730.
Preparation of Compound 732
A preparation was performed in the same manner as in the preparation of Compound 6, except that dibenzo[b,d]furan-4-ylboronic acid was used instead of the compound phenanthren-9-ylboronic acid in Preparation Example 1, thereby obtaining Target Compound 732.
Preparation of Compound 14
A preparation was performed in the same manner as in the preparation of Compound 19, except that (3-bromophenyl)diphenylphosphine oxide was used instead of the compound 9,9′-(5-bromo-1,3-phenylene)bis(9H-carbazole) in Preparation Example 2, thereby obtaining Target Compound 14.
Preparation of Compound 22
A preparation was performed in the same manner as in the preparation of Compound 19, except that 2-chloro-4,6-di(pyridin-2-yl)-1,3,5-triazine was used instead of the compound 9,9′-(5-bromo-1,3-phenylene)bis(9H-carbazole) in Preparation Example 2, thereby obtaining Target Compound 22.
Preparation of Compound 26
A preparation was performed in the same manner as in the preparation of Compound 19, except that 2-bromo-4,6-di(naphthalen-1-yl)-1,3,5-triazine was used instead of the compound 9,9′-(5-bromo-1,3-phenylene)bis(9H-carbazole) in Preparation Example 2, thereby obtaining Target Compound 26.
Preparation of Compound 75
A preparation was performed in the same manner as in the preparation of Compound 42, except that 4-([1,1′-biphenyl]-4-yl)-2-bromo-6-phenylpyrimidine was used instead of the compound 2-chloro-4,6-diphenyl-1,3,5-triazine in Preparation Example 3, thereby obtaining Target Compound 75.
Preparation of Compound 175
A preparation was performed in the same manner as in the preparation of Compound 19, except that 5-bromo-2,4,6-triphenylpyrimidine was used instead of the compound 9,9′-(5-bromo-1,3-phenylene)bis(9H-carbazole) in Preparation Example 2, thereby obtaining Target Compound 175.
Preparation of Compound 202
A preparation was performed in the same manner as in the preparation of Compound 19, except that 2-([1,1′-biphenyl]-4-yl)-4-chloroquinazoline was used instead of the compound 9,9′-(5-bromo-1,3-phenylene)bis(9H-carbazole) in Preparation Example 2, thereby obtaining Target Compound 202.
Preparation of Compound 222
A preparation was performed in the same manner as in the preparation of Compound 42, except that 2-([1,1′-biphenyl]-4-yl)-4-chloroquinazoline was used instead of the compound 2-chloro-4, 6-diphenyl-1, 3, 5-triazine in Preparation Example 3, thereby obtaining Target Compound 222.
Preparation of Compound 225
A preparation was performed in the same manner as in the preparation of Compound 19, except that 2-(4-bromophenyl)imidazo[1,2-a]pyridine was used instead of the compound 9,9′-(5-bromo-1,3-phenylene)bis(9H-carbazole) in Preparation Example 2, thereby obtaining Target Compound 225.
Preparation of Compound 269
A preparation was performed in the same manner as in the preparation of Compound 19, except that 6-bromo-2,2′-bipyridine was used instead of the compound 9,9′-(5-bromo-1,3-phenylene)bis(9H-carbazole) in Preparation Example 2, thereby obtaining Target Compound 269.
Preparation of Compound 291
A preparation was performed in the same manner as in the preparation of Compound 19, except that 6-bromo-2,2′-binaphthalene was used instead of the compound 9,9′-(5-bromo-1,3-phenylene)bis(9H-carbazole) in Preparation Example 2, thereby obtaining Target Compound 291.
Preparation of Compound 317
A preparation was performed in the same manner as in the preparation of Compound 19, except that N-([1,1′-biphenyl]-4-yl)-N-(4-bromophenyl)-9,9-dimethyl-9H-fluoren-3-amine was used instead of the compound 9,9′-(5-bromo-1,3-phenylene)bis(9H-carbazole) in Preparation Example 2, thereby obtaining Target Compound 317.
Preparation of Compound 333
A preparation was performed in the same manner as in the preparation of Compound 19, except that 8-bromo-1,9-dihydropyrene was used instead of the compound 9,9′-(5-bromo-1,3-phenylene)bis(9H-carbazole) in Preparation Example 2, thereby obtaining Target Compound 333.
Preparation of Compound 682
Compound D-1 (5.8 g, 15.44 mmol, 1 eq.), di([1,1′-biphenyl]-4-yl)amine (5.45 g, 16.98 mmol, 1.2 eq.), Cu (3.92 g, 61.76 mmol, 4 eq.), K2CO3 (12.8 g, 92.64 mmol, 6 eq.), and 100 ml of 1,2-dichlorobenzene were sequentially mixed, and then the resulting mixture was refluxed and stirred. When the reaction was terminated, the resulting product was cooled to normal temperature and filtered as it is, and a filtrate obtained at this time was concentrated to obtain a solid. The resulting product was purified by using appropriate amounts of MC and normal hexane to obtain 6.2 g (73%) of Target Compound 682.
Compounds were prepared in the same manner as in the Preparation Examples, and the synthesis confirmation results thereof are shown in Tables 1 and 2. Table 1 is about the measurement values of 1H NMR (CDCl3, 200 MHz), and Table 2 is about the measurement values of field desorption mass spectrometry (FD-MS).
1H NMR(CDCl3, 200 Mz)
Meanwhile,
In the graphs of
Manufacture of Organic Light Emitting Device
Trichloroethylene, acetone, ethanol, and distilled water were sequentially used to ultrasonically wash a transparent electrode ITO thin film obtained from glass for an organic light emitting device (manufactured by Samsung-Corning Co., Ltd.) for each of 5 minutes, and then the ITO thin film was placed in isopropanol, stored, and then used.
Next, an ITO substrate was disposed in a substrate folder of a vacuum deposition equipment, and the following 4,4′,4″-tris(N,N-(2-naphthyl)-phenylamino)triphenyl amine (2-TNATA) was placed in a cell in the vacuum deposition equipment.
Subsequently, air in the chamber was evacuated until the degree of vacuum in the chamber reached 10−6 torr, and then a hole injection layer having a thickness of 600 Å was deposited on the ITO substrate by applying current to the cell to evaporate 2-TNATA. A hole transporting layer having a thickness of 300 Å was deposited on the hole injection layer by placing the following N,N′-bis(a-naphthyl)-N,N′-diphenyl-4,4′-diamine (NPB) in another cell in the vacuum deposition equipment and applying current to the cell to evaporate NPB.
The hole injection layer and the hole transporting layer were formed as described above, and then a blue light emitting material having the following structure was deposited as a light emitting layer thereon. Specifically, the blue light emitting host material H1 was vacuum deposited to have a thickness of 200 Å on one cell in the vacuum deposition equipment, and the blue light emitting dopant material D1 was vacuum deposited thereon in an amount of 5% with respect to the host material.
Subsequently, a compound having the following structural formula E1 as an electron transporting layer was deposited to have a thickness of 300 Å.
An organic light emitting device was manufactured by depositing lithium fluoride (LiF) as an electron injection layer to have a thickness of 10 Å and allowing the Al negative electrode to have a thickness of 1000 Å.
Meanwhile, all the organic compounds required for manufacturing an organic light emitting device were subjected to vacuum sublimed purification under 10−6 to 10−8 torr for each material, and used for the manufacture of the organic light emitting device.
An organic light emitting device was manufactured in the same manner as in Comparative Example 1, except that the compounds synthesized in the Preparation Examples were used instead of E1 used when the electron transporting layer was formed in Comparative Example 1.
For each of the organic light emitting devices manufactured in Comparative Example 1 and Example 1, the driving voltage, the efficiency, the color coordinate, and the service life were measured at a light emitting brightness of 700 cd/m2 and evaluated, and the results are shown in the following Table 3. In this case, the service life was measured by using M6000PMX manufactured by Mac Science Co., Ltd.
As can be seen from the result of Table 3, an organic electroluminescence device using the compound of the present specification as an electron transporting layer material of an organic light emitting device has a low driving voltage, an improved light emitting efficiency, and a significantly improved service life as compared to Comparative Example 1.
| Number | Date | Country | Kind |
|---|---|---|---|
| 10-2014-0150750 | Oct 2014 | KR | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/KR2015/011552 | 10/30/2015 | WO | 00 |
