Polycyclic compound and organic electronic element comprising same
阅读说明：本技术 多环化合物及包含其的有机电子元件 (Polycyclic compound and organic electronic element comprising same ) 是由 李禹哲 崔地宁 徐尚德 金周湖 李东勋 金埙埈 于 2019-06-10 设计创作，主要内容包括：本说明书提供化学式1的化合物及包含其的有机电子元件。(The present specification provides a compound of chemical formula 1 and an organic electronic device including the same.)
1. A compound represented by the following chemical formula 1:
chemical formula 1
In the chemical formula 1, the first and second organic solvents,
r1 to R4 are the same as or different from each other, and each is independently hydrogen, deuterium, a halogen group, a cyano group, a nitro group, a hydroxyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted boryl group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted heterocycloalkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group,
a1 to a4, which are the same as or different from each other, are each independently hydrogen, deuterium, a halogen group, a cyano group, a nitrile group, a substituted or unsubstituted silyl group, a substituted or unsubstituted boryl group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted heterocycloalkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group containing 1 or more of N and S as a heteroatom, at least one of a1 to a4 is not hydrogen,
a5 is hydrogen or deuterium,
a is an integer of 0 to 5, and when a is 2 or more, 2 or more R1 may be the same or different from each other,
b is an integer of 0 to 8, and when b is 2 or more, 2 or more R4 may be the same or different from each other.
c is an integer of 0 to 3, and when c is 2 or more, 2 or more A5 may be the same or different from each other.
2. The compound according to claim 1, wherein the chemical formula 1 is represented by the following chemical formula 2 or 3:
chemical formula 2
Chemical formula 3
In the chemical formulae 2 and 3,
r1 to R4, A1 to A5, a, b and c are as defined in the chemical formula 1.
3. The compound according to claim 1, wherein the a1 to a4 are the same as or different from each other, and each is independently hydrogen, a substituted or unsubstituted aryl group having 6 to 60 carbon atoms, or a substituted or unsubstituted heterocyclic group having 2 to 60 carbon atoms, which contains 1 or more of N and S as a heteroatom, and at least one of a1 to a4 is not hydrogen.
4. The compound of claim 1, wherein said a 1-a 4 are the same or different from each other, each independently is hydrogen, a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted phenanthryl group, a substituted or unsubstituted pyrenyl group, a substituted or unsubstituted anthryl group, a substituted or unsubstituted triphenylene group, a substituted or unsubstituted dibenzothienyl group, or a substituted or unsubstituted carbazolyl group, and at least one of a 1-a 4 is not hydrogen.
5. The compound of claim 1, wherein at least one of said a 1-a 4 is not hydrogen or deuterium.
6. The compound of claim 1, wherein at least one of a 1-a 4 is a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group containing 1 or more of N and S as heteroatoms.
7. The compound according to claim 1, wherein the chemical formula 1 is represented by any one of the following chemical formulae 1-1 to 1-8:
chemical formula 1-1
Chemical formula 1-2
Chemical formulas 1 to 3
Chemical formulas 1 to 4
Chemical formulas 1 to 5
Chemical formulas 1 to 6
Chemical formulas 1 to 7
Chemical formulas 1 to 8
In the chemical formulas 1-1 to 1-8,
r1 to R4, A5, a, b and c are as defined in the chemical formula 1,
a11, a21, a31, and a41 are the same as or different from each other, and each independently is deuterium, a halogen group, a cyano group, a nitrile group, a substituted or unsubstituted silyl group, a substituted or unsubstituted boron group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted heterocycloalkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group containing 1 or more of N and S as a heteroatom.
8. The compound according to claim 1, wherein the chemical formula 1 is represented by any one of the following compounds:
9. an organic electronic component, comprising: a first electrode, a second electrode provided so as to face the first electrode, and 1 or more organic layers provided between the first electrode and the second electrode, wherein 1 or more of the organic layers contain the compound according to any one of claims 1 to 8.
10. The organic electronic element according to claim 9, wherein the organic layer comprises a hole injection layer or a hole transport layer containing the compound.
11. The organic electronic element according to claim 9, wherein the organic layer comprises an electron transport layer or an electron injection layer containing the compound.
12. The organic electronic element according to claim 9, wherein the organic layer comprises a light-emitting layer containing the compound.
13. The organic electronic element according to claim 9, wherein the organic layer comprises a light-emitting layer containing the compound as a host of the light-emitting layer.
14. The organic electronic element according to claim 9, wherein the organic electronic element is selected from the group consisting of an organic light emitting element, an organic phosphorescent element, an organic solar cell, an Organic Photoconductor (OPC) and an organic transistor.
Technical Field
This application claims priority to korean patent application No. 10-2018-0066182, which was filed in 2018 at 08.06.8 by the korean patent office, the entire contents of which are incorporated herein by reference.
The present description relates to compounds and organic electronic components comprising the same.
Background
A typical example of the organic electronic device is an organic light-emitting device. In general, the organic light emitting phenomenon refers to a phenomenon of converting electric energy into light energy using an organic substance. An organic light emitting element utilizing an organic light emitting phenomenon generally has a structure including an anode and a cathode with an organic layer interposed therebetween. Here, in order to improve the efficiency and stability of the organic light emitting element, the organic layer is often formed of a multilayer structure formed of different materials, and may be formed of, for example, a hole injection layer, a hole transport layer, a light emitting layer, an electron transport layer, an electron injection layer, or the like. With the structure of such an organic light emitting element, if a voltage is applied between both electrodes, holes are injected from the anode into the organic layer, electrons are injected from the cathode into the organic layer, excitons (exiton) are formed when the injected holes and electrons meet, and light is emitted when the excitons are transitioned again to the ground state.
Most of the substances used in organic light-emitting devices are pure organic substances or complex compounds of organic substances and metals. The substance used in the organic light emitting element may be classified into a hole injecting substance, a hole transporting substance, a light emitting substance, an electron transporting substance, an electron injecting substance, and the like according to the application. Here, as the hole injecting substance or the hole transporting substance, an organic substance having p-type properties, that is, an organic substance which is easily oxidized and has an electrochemically stable state at the time of oxidation is mainly used. On the other hand, as the electron injecting substance or the electron transporting substance, an organic substance having an n-type property, that is, an organic substance which is easily reduced and has an electrochemically stable state at the time of reduction is mainly used. The light-emitting layer material is preferably a material having both p-type and n-type properties, that is, a material having a stable form in both an oxidized state and a reduced state, and is preferably a material having high light emission efficiency in converting excitons into light when they are formed.
In order to fully exhibit the excellent characteristics of the organic light-emitting device, development of a substance constituting an organic layer in the device has been continuously demanded.
Disclosure of Invention
Technical subject
The present specification describes a compound and an organic electronic device including the same.
Means for solving the problems
One embodiment of the present specification provides a compound represented by the following chemical formula 1.
[ chemical formula 1]
In the above-described chemical formula 1,
r1 to R4 are the same as or different from each other, and each is independently hydrogen, deuterium, a halogen group, a cyano group, a nitro group, a hydroxyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted boryl group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted heterocycloalkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group,
a1 to a4, which are the same as or different from each other, are each independently hydrogen, deuterium, a halogen group, a cyano group, a nitrile group, a substituted or unsubstituted silyl group, a substituted or unsubstituted boryl group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted heterocycloalkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group containing 1 or more of N and S as a heteroatom, at least one of a1 to a4 is not hydrogen,
a5 is hydrogen or deuterium,
a is an integer of 0 to 5, and when a is 2 or more, 2 or more R1 may be the same or different from each other,
b is an integer of 0 to 8, and when b is 2 or more, 2 or more R4 may be the same or different from each other.
c is an integer of 0 to 3, and when c is 2 or more, 2 or more A5 may be the same or different from each other.
In addition, the present invention provides an organic electronic element comprising: the organic light-emitting device includes a first electrode, a second electrode provided so as to face the first electrode, and 1 or more organic layers provided between the first electrode and the second electrode, wherein 1 or more of the organic layers contain the compound.
Effects of the invention
The compound described in the present specification can be used as a material for an organic layer of an organic electronic device. In the case of manufacturing an organic electronic element including the compound according to at least one embodiment, an organic electronic element having a low driving voltage and a long lifetime can be obtained.
In this case, if dibenzofuranyl groups and substituted naphthyl groups are introduced into anthracene, intermolecular stacking can be prevented, and thus, device efficiency and lifetime can be improved.
Further, if deuterium is substituted in anthracene, dibenzofuranyl, or naphthyl, the stability of the polymer can be improved, and the device life can be increased.
Drawings
Fig. 1 illustrates an example of an organic light-emitting element composed of a substrate 1, an anode 2, a light-emitting layer 3, and a cathode 4.
Fig. 2 illustrates an example of an organic light-emitting element composed of a substrate 1, an anode 2, a hole injection layer 5, a hole transport layer 6, a light-emitting layer 7, an electron transport layer 8, and a cathode 4.
Fig. 3 illustrates an example of an organic light-emitting element composed of a substrate 1, an anode 2, a hole injection layer 5, a hole transport layer 6, a light-emitting layer 7, an electron transport layer 8, an electron injection layer 9, and a cathode 4.
1: substrate
2: anode
3: luminescent layer
4: cathode electrode
5: hole injection layer
6: hole transport layer
7: luminescent layer
8: electron transport layer
9: electron injection layer
Detailed Description
The present specification will be described in more detail below.
The present specification provides a compound represented by the following chemical formula 1. The compound represented by the following chemical formula 1 is easily injected with electrons based on n-type (n-type) characteristics of dibenzofuran by combining the No. 1 carbon atom or No. 2 carbon atom of dibenzofuranyl group at the No. 9 carbon position of anthracene and combining 1 or more naphthyl groups substituted with a substituent other than hydrogen at the No. 10 carbon position, and thus, when applied to an organic electronic device, it brings about a reduction in driving voltage, and by introducing 1 or more substituents into the naphthyl groups, exciton reduction due to intermolecular stacking is reduced, and the life of the device can be improved.
Further, by substituting deuterium for anthracene, dibenzofuranyl, or naphthyl, the stability of the molecule can be improved, and thus the lifetime of the device can be improved.
Therefore, when the compound represented by the following chemical formula 1 is included in an organic electronic device according to the principle of action as described above, a device having a low driving voltage and a long life characteristic can be manufactured.
[ chemical formula 1]
In the above-described chemical formula 1,
r1 to R4 are the same as or different from each other, and each is independently hydrogen, deuterium, a halogen group, a cyano group, a nitro group, a hydroxyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted boryl group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted heterocycloalkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group,
a1 to a4, which are the same as or different from each other, are each independently hydrogen, deuterium, a halogen group, a cyano group, a nitrile group, a substituted or unsubstituted silyl group, a substituted or unsubstituted boryl group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted heterocycloalkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group containing 1 or more of N and S as a heteroatom, at least one of a1 to a4 is not hydrogen,
a5 is hydrogen or deuterium,
a is an integer of 0 to 5, and when a is 2 or more, 2 or more R1 may be the same or different from each other,
b is an integer of 0 to 8, and when b is 2 or more, 2 or more R4 may be the same or different from each other.
c is an integer of 0 to 3, and when c is 2 or more, 2 or more A5 may be the same or different from each other.
In the present specification, when a part is referred to as "including" a certain component, unless specifically stated to the contrary, it means that the other component may be further included, and the other component is not excluded.
In the present specification, when it is stated that a certain member is "on" another member, it includes not only a case where the certain member is in contact with the another member but also a case where the other member exists between the two members.
In the present specification, examples of the substituent are described below, but not limited thereto.
The term "substituted" means that a hydrogen atom bonded to a carbon atom of a compound is substituted with another substituent, and the substituted position is not limited as long as the hydrogen atom can be substituted, that is, the substituent can be substituted, and when 2 or more substituents are substituted, 2 or more substituents may be the same as or different from each other.
In the present specification, the term "substituted or unsubstituted" means substituted with 1 or 2 or more substituents selected from deuterium, a halogen group, a cyano group (-CN), a nitro group, a hydroxyl group, a carbonyl group, an ester group, an imide group, an amino group, a silyl group, a boryl group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted aryl group, and a substituted or unsubstituted heterocyclic group, or a substituent in which 2 or more substituents among the above-exemplified substituents are linked, or does not have any substituent. For example, "a substituent in which 2 or more substituents are linked" may be a biphenyl group. That is, the biphenyl group may be an aryl group or may be interpreted as a substituent in which 2 phenyl groups are linked.
Examples of the above-mentioned substituents are described below, but not limited thereto.
In the present specification, as examples of the halogen group, there are fluorine (-F), chlorine (-Cl), bromine (-Br) or iodine (-I).
In the present specification, the number of carbon atoms of the carbonyl group is not particularly limited, but is preferably 1 to 40. Specifically, the compound may have the following structure, but is not limited thereto.
In the present specification, in the ester group, the oxygen of the ester group may be substituted with a linear, branched or cyclic alkyl group having 1 to 20 carbon atoms or an aryl group having 6 to 30 carbon atoms. Specifically, the compound may be a compound of the following structural formula, but is not limited thereto.
In the present specification, the number of carbon atoms in the imide group is not particularly limited, but is preferably 1 to 25. Specifically, the compound may have the following structure, but is not limited thereto.
In the present specification, the silyl group may be represented by-SiYaYbYcThe above-mentioned chemical formula is Ya、YbAnd YcEach may be hydrogen, substituted or unsubstituted alkyl, or substituted or unsubstituted aryl. Specific examples of the silyl group include, but are not limited to, a trimethylsilyl group, a triethylsilyl group, a t-butyldimethylsilyl group, a vinyldimethylsilyl group, a propyldimethylsilyl group, a triphenylsilyl group, a diphenylsilyl group, and a phenylsilyl group.
In this specification, the boron group may be represented BY-BYdYeThe above-mentioned chemical formula is YdAnd YeEach may be hydrogen, substituted or unsubstituted alkyl, or substituted or unsubstituted aryl. The boron group includes, but is not limited to, a trimethylboron group, a triethylboron group, a t-butyldimethylboron group, a triphenylboron group, and a phenylboron group.
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 60. According to one embodiment, the alkyl group has 1 to 30 carbon atoms. According to another embodiment, the alkyl group has 1 to 20 carbon atoms. According to another embodiment, the alkyl group has 1 to 10 carbon atoms. Specific examples of the alkyl group include, but are not limited to, methyl, ethyl, propyl, n-propyl, isopropyl, butyl, n-butyl, isobutyl, tert-butyl, pentyl, n-pentyl, hexyl, n-hexyl, heptyl, n-heptyl, octyl, and n-octyl.
In the present specification, the cycloalkyl group is not particularly limited, but is preferably a cycloalkyl group having 3 to 60 carbon atoms. According to one embodiment, the cycloalkyl group has 3 to 30 carbon atoms. According to another embodiment, the cycloalkyl group has 3 to 20 carbon atoms. According to another embodiment, the number of carbon atoms of the above cycloalkyl group is 3 to 6. Specifically, there are, but not limited to, cyclopropyl, cyclobutyl, cyclopentyl, cyclohexyl, cycloheptyl, and cyclooctyl.
In the present specification, the heterocycloalkyl group includes N, O, P, S, Si and 1 or more of Se as a heteroatom, and in addition to these, the above description about the cycloalkyl group can be applied. The number of carbon atoms of the heterocycloalkyl group may be 2 to 30.
In the present specification, the aryl group is not particularly limited, but is preferably an aryl group having 6 to 60 carbon atoms, and may be a monocyclic aryl group or a polycyclic aryl group. According to one embodiment, the aryl group has 6 to 30 carbon atoms. According to one embodiment, the aryl group has 6 to 20 carbon atoms. The aryl group may be a monocyclic aryl group such as a phenyl group, a biphenyl group, a terphenyl group, a quaterphenyl group, but is not limited thereto. The polycyclic aromatic group may be a naphthyl group, an anthryl group, a phenanthryl group, a pyrenyl group, a perylene group, a triphenyl group, a perylene group,Examples of the group include, but are not limited to, a fluorenyl group, a fluoranthenyl group, and a triphenylenyl group.
In the present specification, the fluorenyl group may be substituted, and 2 substituents may be combined with each other to form a spiro structure.
In the case where the above-mentioned fluorenyl group is substituted, it may beIsospirofluorene group;(9, 9-dimethylfluorenyl group) andand (9, 9-diphenylfluorenyl) and the like. However, the present invention is not limited thereto.
In the present specification, the heterocyclic group is a cyclic group containing 1 or more of N, O, P, S, Si and Se as heteroatoms, and the number of carbon atoms is not particularly limited, but is preferably 2 to 60. According to one embodiment, the number of carbon atoms of the heterocyclic group is 2 to 30. Examples of the heterocyclic group include, but are not limited to, pyridyl, quinolyl, thienyl, dibenzothienyl, furyl, dibenzofuryl, carbazolyl, benzocarbazolyl, naphthobenzofuryl and the like.
In the present specification, the heteroaryl group is an aromatic group, and in addition to this, the above description of the heterocyclic group can be applied.
In one embodiment of the present invention, the chemical formula 1 may be represented by the following chemical formula 1-a.
[ chemical formula 1-A ]
In the above chemical formula 1-a,
r1 to R4, a1 to a4, a and b are as defined in the above chemical formula 1.
In one embodiment of the present invention, the chemical formula 1 may be represented by the following chemical formula 2 or 3.
[ chemical formula 2]
[ chemical formula 3]
In the above-described chemical formulas 2 and 3,
r1 to R4, a1 to a5, a, b and c are as defined in the above chemical formula 1.
According to an embodiment of the present invention, a1 to a4 mentioned above are the same as or different from each other, and each independently represents hydrogen, deuterium, a halogen group, a cyano group, a nitrile group, a substituted or unsubstituted silyl group, a substituted or unsubstituted boron group, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 30 carbon atoms, a substituted or unsubstituted heterocycloalkyl group having 2 to 30 carbon atoms, a substituted or unsubstituted aryl group having 6 to 60 carbon atoms, or a substituted or unsubstituted heterocyclic group having 2 to 60 carbon atoms containing 1 or more of N and S as heteroatoms, and at least one of a1 to a4 is not hydrogen.
In another embodiment, a1 through a4 mentioned above, which are the same as or different from each other, are each independently hydrogen, a substituted or unsubstituted aryl group having 6 to 60 carbon atoms, or a substituted or unsubstituted heterocyclic group having 2 to 60 carbon atoms and containing 1 or more of N and S as a hetero atom, and at least one of a1 through a4 is not hydrogen.
According to another embodiment, a1 through a4 mentioned above, which are the same as or different from each other, are each independently hydrogen, a substituted or unsubstituted aryl group having 6 to 60 carbon atoms, or a substituted or unsubstituted heterocyclic group having 2 to 60 carbon atoms and containing 1 or more of N and S as a heteroatom, and at least one of a1 through a4 is a substituted or unsubstituted aryl group having 6 to 60 carbon atoms, or a substituted or unsubstituted heterocyclic group having 2 to 60 carbon atoms and containing 1 or more of N and S as a heteroatom.
In another embodiment, a1 through a4 mentioned above, which are the same as or different from each other, are each independently hydrogen, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, or a substituted or unsubstituted heterocyclic group having 2 to 30 carbon atoms and containing 1 or more of N and S as a hetero atom, and at least one of a1 through a4 is not hydrogen.
According to another embodiment, the above-mentioned a1 to a4 are the same as or different from each other, and each independently is hydrogen, an aryl group having 6 to 30 carbon atoms substituted with deuterium, or a heterocyclic group having 2 to 30 carbon atoms containing 1 or more of N and S as a heteroatom and being substituted with an aryl group having 6 to 30 carbon atoms or deuterium, and at least one of a1 to a4 is not hydrogen.
According to another embodiment, the above a1 to a4 are the same as or different from each other, and each independently is hydrogen, an aryl group having 6 to 30 carbon atoms, or a heterocyclic group having 2 to 30 carbon atoms containing 1 or more of N and S as a hetero atom substituted or unsubstituted with an aryl group having 6 to 30 carbon atoms, and at least one of a1 to a4 is not hydrogen.
In another embodiment, a1 through a4 mentioned above, which are the same as or different from each other, are each independently hydrogen, an aryl group having 6 to 30 carbon atoms substituted with deuterium or a heterocyclic group having 2 to 30 carbon atoms and containing 1 or more of N and S as heteroatoms substituted with an aryl group having 6 to 30 carbon atoms or deuterium or a heterocyclic group having 2 to 30 carbon atoms and containing 1 or more of N and S as heteroatoms substituted with deuterium, and at least one of a1 through a4 is an aryl group having 6 to 30 carbon atoms substituted with deuterium or a heterocyclic group having 2 to 30 carbon atoms and containing 1 or more of N and S as heteroatoms substituted with an aryl group having 6 to 30 carbon atoms or deuterium.
In another embodiment, a1 through a4 mentioned above, which are the same as or different from each other, are each independently hydrogen, an aryl group having 6 to 30 carbon atoms, or a heterocyclic group having 2 to 30 carbon atoms and containing 1 or more of N and S as a heteroatom and substituted or unsubstituted with an aryl group having 6 to 30 carbon atoms, and at least one of a1 through a4 is an aryl group having 6 to 30 carbon atoms, or a heterocyclic group having 2 to 30 carbon atoms and containing 1 or more of N and S as a heteroatom and substituted or unsubstituted with an aryl group having 6 to 30 carbon atoms.
According to another embodiment, the above a1 to a4 are the same as or different from each other and each independently is hydrogen, a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted phenanthryl group, a substituted or unsubstituted pyrenyl group, a substituted or unsubstituted anthryl group, a substituted or unsubstituted triphenylene group, a substituted or unsubstituted dibenzothiophene group, or a substituted or unsubstituted carbazolyl group, and at least one of a1 to a4 is not hydrogen.
In another embodiment, a1 through a4 are the same as or different from each other, and each independently is hydrogen, a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted phenanthryl group, a substituted or unsubstituted pyrenyl group, a substituted or unsubstituted fluoranthenyl group, a substituted or unsubstituted triphenylene group, a substituted or unsubstituted dibenzothienyl group, or a substituted or unsubstituted carbazolyl group, and at least one of a1 through a4 is a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted phenanthryl group, a substituted or unsubstituted pyrenyl group, a substituted or unsubstituted fluoranthenyl group, a substituted or unsubstituted triphenylene group, a substituted or unsubstituted dibenzothienyl group, or a substituted or unsubstituted carbazolyl group.
In another embodiment, the above a1 to a4 are the same as or different from each other and each independently is hydrogen, a phenyl group substituted or unsubstituted with deuterium, a biphenyl group substituted or unsubstituted with deuterium, a naphthyl group substituted or unsubstituted with deuterium, a phenanthryl group substituted or unsubstituted with deuterium, a pyrenyl group substituted or unsubstituted with deuterium, a fluoranthenyl group substituted or unsubstituted with deuterium, a triphenylene group substituted or unsubstituted with deuterium, an aryl group substituted or unsubstituted with 6 to 30 carbon atoms or deuterium, or a carbazolyl group substituted or unsubstituted with an aryl group or deuterium with 6 to 30 carbon atoms, at least one of a1 to a4 being other than hydrogen.
In another embodiment, a1 through a4 mentioned above, which are the same as or different from each other, are each independently hydrogen, phenyl, biphenyl, naphthyl, phenanthryl, pyrenyl, fluoranthenyl, triphenylenyl, dibenzothienyl substituted with an aryl group having 6 to 30 carbon atoms or carbazolyl substituted with an aryl group having 6 to 30 carbon atoms or unsubstituted, and at least one of a1 through a4 is not hydrogen.
According to another embodiment, a1 through a4 mentioned above, which are the same as or different from each other, are each independently hydrogen, phenyl, biphenyl, naphthyl, phenanthryl, pyrenyl, fluoranthenyl, triphenylenyl, a dibenzothienyl group substituted or unsubstituted with an aryl group having 6 to 30 carbon atoms, or a carbazolyl group substituted or unsubstituted with an aryl group having 6 to 30 carbon atoms, and at least one of a1 through a4 is phenyl, biphenyl, naphthyl, phenanthryl, pyrenyl, fluoranthenyl, triphenylenyl, a dibenzothienyl group substituted or unsubstituted with an aryl group having 6 to 30 carbon atoms, or a carbazolyl group substituted or unsubstituted with an aryl group having 6 to 30 carbon atoms.
According to another embodiment, the above a1 to a4 are the same as or different from each other, and each is independently hydrogen, phenyl substituted or unsubstituted with deuterium, biphenyl substituted or unsubstituted with deuterium, naphthyl substituted or unsubstituted with deuterium, phenanthryl substituted or unsubstituted with deuterium, pyrenyl substituted or unsubstituted with deuterium, fluoranthenyl substituted or unsubstituted with deuterium, triphenylene substituted or unsubstituted with deuterium, dibenzothienyl substituted or unsubstituted with deuterium, or carbazolyl substituted with phenyl or deuterium, at least one of a1 to a4 being other than hydrogen.
According to another embodiment, the above a1 to a4 are the same as or different from each other, and each is independently hydrogen, phenyl, biphenyl, naphthyl, phenanthryl, pyrenyl, fluoranthenyl, triphenylenyl, dibenzothienyl, or carbazolyl substituted with phenyl, and at least one of a1 to a4 is not hydrogen.
In another embodiment, the above a1 to a4 are the same as or different from each other and each independently is hydrogen, a phenyl group substituted or unsubstituted with deuterium, a biphenyl group substituted or unsubstituted with deuterium, a naphthyl group substituted or unsubstituted with deuterium, a phenanthryl group substituted or unsubstituted with deuterium, a pyrenyl group substituted or unsubstituted with deuterium, a fluoranthenyl group substituted or unsubstituted with deuterium, a triphenylene group substituted or unsubstituted with deuterium, a dibenzothienyl group substituted or unsubstituted with deuterium, or a carbazolyl group substituted with phenyl or deuterium, at least one of a1 to a4 is a phenyl group substituted or unsubstituted with deuterium; biphenyl substituted or unsubstituted with deuterium; naphthyl substituted or unsubstituted by deuterium, phenanthryl substituted or unsubstituted by deuterium, pyrenyl substituted or unsubstituted by deuterium, fluoranthenyl substituted or unsubstituted by deuterium, triphenylene substituted or unsubstituted by deuterium, dibenzothienyl substituted or unsubstituted by deuterium, or carbazolyl substituted by phenyl or deuterium.
In another embodiment, a1 through a4 are the same as or different from each other and each independently is hydrogen, phenyl, biphenyl, naphthyl, phenanthryl, pyrenyl, fluoranthenyl, triphenylenyl, dibenzothienyl, or carbazolyl substituted with phenyl, and at least one of a1 through a4 is phenyl, biphenyl, naphthyl, phenanthryl, pyrenyl, fluoranthenyl, triphenylenyl, dibenzothienyl, or carbazolyl substituted with phenyl.
1 or 2 of the above a1 to a4 are a phenyl group substituted or unsubstituted with deuterium, a biphenyl group substituted or unsubstituted with deuterium, a naphthyl group substituted or unsubstituted with deuterium, a phenanthryl group substituted or unsubstituted with deuterium, a pyrenyl group substituted or unsubstituted with deuterium, a fluoranthenyl group substituted or unsubstituted with deuterium, a triphenylene group substituted or unsubstituted with deuterium, a dibenzothiophene group substituted or unsubstituted with deuterium, or a carbazolyl group substituted with phenyl or deuterium, and the remainder are hydrogen.
1 or 2 of the above-mentioned a1 to a4 are phenyl, biphenyl, naphthyl, phenanthryl, pyrenyl, fluoranthenyl, triphenylenyl, dibenzothienyl, or carbazolyl groups substituted with phenyl, and the remainder are hydrogen.
In another embodiment, at least one of a1 through a4 described above is not hydrogen or deuterium.
In another embodiment, at least one of a1 through a4 above is not hydrogen.
In another embodiment, at least one of a1 through a4 described above is not deuterium.
In another embodiment, at least one of a1 through a4 is a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group containing 1 or more of N and S as a heteroatom.
In another embodiment, at least one of a1 through a4 is a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted phenanthryl group, a substituted or unsubstituted pyrenyl group, a substituted or unsubstituted fluoranthenyl group, a substituted or unsubstituted triphenylene group, a substituted or unsubstituted dibenzothienyl group, or a substituted or unsubstituted carbazolyl group.
In another embodiment, at least one of a1 to a4 is phenyl, biphenyl, naphthyl, phenanthryl, pyrenyl, fluoranthenyl, triphenylenyl, dibenzothienyl, or carbazolyl substituted with phenyl.
In another embodiment, at least one of a1 through a4 is phenyl substituted or unsubstituted with deuterium, biphenyl substituted or unsubstituted with deuterium, naphthyl substituted or unsubstituted with deuterium, phenanthryl substituted or unsubstituted with deuterium, pyrenyl substituted or unsubstituted with deuterium, fluoranthenyl substituted or unsubstituted with deuterium, triphenylene substituted or unsubstituted with deuterium, dibenzothienyl substituted or unsubstituted with deuterium, or carbazolyl substituted with phenyl or deuterium.
A5 is hydrogen or deuterium.
A5 represents hydrogen.
A5 is deuterium.
In one embodiment of the present invention, the chemical formula 1 may be represented by the following chemical formula 2-a or 3-a.
[ chemical formula 2-A ]
[ chemical formula 3-A ]
In the above chemical formulas 2-A and 3-A,
r1 to R4, a1 to a4, a and b are as defined in the above chemical formula 1.
According to an embodiment of the present invention, the chemical formula 1 may be represented by any one of the following chemical formulas 1-1 to 1-8.
[ chemical formula 1-1]
[ chemical formulas 1-2]
[ chemical formulas 1-3]
[ chemical formulas 1 to 4]
[ chemical formulas 1 to 5]
[ chemical formulas 1 to 6]
[ chemical formulas 1 to 7]
[ chemical formulas 1 to 8]
In the above chemical formulas 1-1 to 1-8,
r1 to R4, A5, a, b and c are as defined in the above chemical formula 1,
a11, a21, a31, and a41 are the same as or different from each other, and each independently is deuterium, a halogen group, a cyano group, a nitrile group, a substituted or unsubstituted silyl group, a substituted or unsubstituted boron group, a substituted or unsubstituted alkyl group, a substituted or unsubstituted cycloalkyl group, a substituted or unsubstituted heterocycloalkyl group, a substituted or unsubstituted aryl group, or a substituted or unsubstituted heterocyclic group containing 1 or more of N and S as a heteroatom.
According to an embodiment of the present invention, a11, a21, a31, and a41 mentioned above are the same as or different from each other, and each independently is deuterium, a halogen group, a cyano group, a nitrile group, a substituted or unsubstituted silyl group, a substituted or unsubstituted boron group, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 30 carbon atoms, a substituted or unsubstituted heterocycloalkyl group having 2 to 30 carbon atoms, a substituted or unsubstituted aryl group having 6 to 60 carbon atoms, or a substituted or unsubstituted heterocyclic group having 2 to 60 carbon atoms containing 1 or more of N and S as a heteroatom.
In another embodiment, a11, a21, a31 and a41, which may be the same or different from each other, are each independently deuterium, a substituted or unsubstituted aryl group having 6 to 60 carbon atoms, or a substituted or unsubstituted heterocyclic group having 2 to 60 carbon atoms and containing 1 or more of N and S as a heteroatom.
In another embodiment, a11, a21, a31 and a41, which may be the same or different from each other, are each independently deuterium, a substituted or unsubstituted aryl group having 6 to 30 carbon atoms, or a substituted or unsubstituted heterocyclic group having 2 to 30 carbon atoms and containing 1 or more of N and S as a heteroatom.
According to another embodiment, the above-mentioned a11, a21, a31 and a41, which are the same as or different from each other, are each independently deuterium, an aryl group of 6 to 30 carbon atoms substituted or unsubstituted with deuterium, or a heterocyclic group of 2 to 30 carbon atoms containing 1 or more of N and S as a hetero atom, substituted or unsubstituted with an aryl group of 6 to 30 carbon atoms or deuterium.
According to another embodiment, the above-mentioned a11, a21, a31 and a41, which are the same or different from each other, are each independently deuterium, an aryl group having 6 to 30 carbon atoms, or a heterocyclic group having 2 to 30 carbon atoms which is substituted or unsubstituted with an aryl group having 6 to 30 carbon atoms and contains 1 or more of N and S as a hetero atom.
According to another embodiment, a11, a21, a31, and a41, which are the same or different from each other, are each independently deuterium, a substituted or unsubstituted phenyl group, a substituted or unsubstituted biphenyl group, a substituted or unsubstituted naphthyl group, a substituted or unsubstituted phenanthryl group, a substituted or unsubstituted pyrenyl group, a substituted or unsubstituted anthryl group, a substituted or unsubstituted triphenylene group, a substituted or unsubstituted dibenzothienyl group, or a substituted or unsubstituted carbazolyl group.
According to another embodiment, the above a11, a21, a31 and a41 are the same as or different from each other, and each is independently deuterium, a phenyl group substituted or unsubstituted with deuterium, a biphenyl group substituted or unsubstituted with deuterium, a naphthyl group substituted or unsubstituted with deuterium, a phenanthryl group substituted or unsubstituted with deuterium, a pyrenyl group substituted or unsubstituted with deuterium, a fluoranthenyl group substituted or unsubstituted with deuterium, a triphenylene group substituted or unsubstituted with deuterium, a dibenzothienyl group substituted or unsubstituted with deuterium, a carbazolyl group substituted or unsubstituted with an aryl group having 6 to 30 carbon atoms or deuterium.
In another embodiment, a11, a21, a31 and a41, which are the same or different from each other, are each independently deuterium, phenyl, biphenyl, naphthyl, phenanthryl, pyrenyl, fluoranthenyl, triphenylenyl, dibenzothienyl substituted with an aryl group having 6 to 30 carbon atoms or carbazolyl substituted with an aryl group having 6 to 30 carbon atoms or unsubstituted.
According to another embodiment, the above a11, a21, a31 and a41 are the same as or different from each other, and each is independently deuterium, a phenyl group substituted or unsubstituted with deuterium, a biphenyl group substituted or unsubstituted with deuterium, a naphthyl group substituted or unsubstituted with deuterium, a phenanthryl group substituted or unsubstituted with deuterium, a pyrenyl group substituted or unsubstituted with deuterium, a fluoranthenyl group substituted or unsubstituted with deuterium, a triphenylene group substituted or unsubstituted with deuterium, a dibenzothienyl group substituted or unsubstituted with deuterium, or a carbazolyl group substituted with phenyl or deuterium.
According to another embodiment, a11, a21, a31 and a41 are the same as or different from each other, and each is independently deuterium, phenyl, biphenyl, naphthyl, phenanthryl, pyrenyl, fluoranthenyl, triphenylenyl, dibenzothienyl, or carbazolyl substituted with phenyl.
According to an embodiment of the present invention, when a is an integer of 0 to 2 and a is 2,2 or more R1 may be the same or different from each other.
According to an embodiment of the present invention, when b is an integer of 0 to 2 and b is 2,2 or more R4 may be the same or different from each other.
According to another embodiment, b is 0 or 1.
According to an embodiment of the present invention, when c is an integer of 0 to 3 and c is 2 or more, 2 or more a5 may be the same or different from each other.
According to another embodiment, c is 0 or 1.
According to another embodiment, c is 3.
According to an embodiment of the present invention, R1 to R4 are the same as or different from each other, and each independently represents hydrogen, deuterium, a halogen group, a cyano group, a nitro group, a hydroxyl group, a substituted or unsubstituted silyl group, a substituted or unsubstituted boron group, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted cycloalkyl group having 3 to 30 carbon atoms, a substituted or unsubstituted heterocycloalkyl group having 2 to 30 carbon atoms, a substituted or unsubstituted aryl group having 6 to 60 carbon atoms, or a substituted or unsubstituted heterocyclic group having 2 to 60 carbon atoms and containing 1 or more of O, S, N and Si as heteroatoms.
In another embodiment, R1 to R4 which are the same as or different from each other, are each independently hydrogen, deuterium, a halogen group, a cyano group, a substituted or unsubstituted silyl group, a substituted or unsubstituted boryl group, a substituted or unsubstituted alkyl group having 1 to 30 carbon atoms, a substituted or unsubstituted aryl group having 6 to 60 carbon atoms, or a substituted or unsubstituted heterocyclic group having 2 to 60 carbon atoms and containing 1 or more of O, S, N and Si as heteroatoms.
According to an embodiment of the present disclosure, R1 to R3 are the same or different and each independently hydrogen, deuterium, or a substituted or unsubstituted aryl group having 6 to 60 carbon atoms.
In another embodiment, R1 to R3 which may be the same or different from each other, are each independently hydrogen, deuterium, or a substituted or unsubstituted aryl group having 6 to 30 carbon atoms.
According to another embodiment, the above R1 to R3, equal to or different from each other, are each independently hydrogen; deuterium; or an aryl group having 6 to 30 carbon atoms.
In another embodiment, R1 through R3 are the same or different from each other and are each independently hydrogen, deuterium, or a substituted or unsubstituted phenyl.
According to another embodiment, the above R1 to R3, which are the same or different from each other, are each independently hydrogen, deuterium, or phenyl.
According to another embodiment, the above R1 to R3, equal to or different from each other, are each independently hydrogen or deuterium.
According to another embodiment, R4 is hydrogen.
According to an embodiment of the present invention, each of the above chemical formulas 1-1 to 1-8 may be represented by the following chemical formulas 1-1A to 1-8A.
[ chemical formula 1-1A ]
[ chemical formula 1-2A ]
[ chemical formulas 1-3A ]
[ chemical formulas 1-4A ]
[ chemical formulas 1-5A ]
[ chemical formulas 1-6A ]
[ chemical formulas 1-7A ]
[ chemical formulas 1-8A ]
In the above chemical formulas 1-1A to 1-8A,
r1 to R4, a and b are as defined in the above chemical formula 1.
According to an embodiment of the present invention, the chemical formula 1 may be represented by any one of the following compounds.
In the present invention, compounds having various energy band gaps can be synthesized by introducing various substituents into the compound represented by the above chemical formula 1. In addition, in the present invention, by introducing various substituents into the compound represented by the above chemical formula 1, the HOMO and LUMO levels of the compound can also be adjusted.
In addition, by introducing various substituents into the compound represented by the above chemical formula 1, a compound having inherent characteristics of the introduced substituents can be synthesized. For example, by introducing a substituent mainly used for a hole injection layer material, a hole transport material, an electron suppression material, a light-emitting layer material, and an electron transport layer material, which are used in the production of an organic light-emitting element, into the core structure, a material satisfying the conditions required for each organic layer can be synthesized.
In addition, an organic electronic element according to the present invention is characterized by comprising: the organic light-emitting device includes a first electrode, a second electrode provided so as to face the first electrode, and 1 or more organic layers provided between the first electrode and the second electrode, wherein 1 or more of the organic layers contain the above-mentioned compound.
The organic electronic device of the present invention can be produced by a method and a material for producing a general organic electronic device, in addition to forming one or more organic layers using the compound.
According to an embodiment of the present invention, the organic electronic element may be selected from an organic light emitting element, an organic phosphorescent element, an organic solar cell, an Organic Photoconductor (OPC), and a glass transistor.
Next, an organic light-emitting element will be exemplified.
The compound can be used not only for forming an organic layer by vacuum deposition but also for forming an organic layer by solution coating in the production of an organic light-emitting element. Here, the solution coating method refers to spin coating, dip coating, inkjet printing, screen printing, spraying, roll coating, and the like, but is not limited thereto.
The organic layer of the organic light-emitting device of the present invention may have a single-layer structure, or may have a multilayer structure in which two or more organic layers are stacked. For example, the organic light-emitting element of the present invention may have a structure including, as an organic layer, a hole injection layer, a hole transport layer, a layer which simultaneously performs hole transport and hole injection, an electron suppression layer, a light-emitting layer, an electron transport layer, an electron injection layer, a layer which simultaneously performs electron transport and electron injection, and the like. However, the structure of the organic light emitting element is not limited thereto, and a smaller number or a larger number of organic layers may be included.
In the organic light emitting element of the present invention, the above organic layer may include an electron transport layer or an electron injection layer, and the above electron transport layer or the electron injection layer may contain the above-mentioned compound.
In the organic light emitting element of the present invention, the above organic layer may include a hole injection layer or a hole transport layer, and the above hole injection layer or hole transport layer may contain the above-mentioned compound.
In the organic light-emitting element of the present invention, the above organic layer includes a light-emitting layer containing the above-mentioned compound.
According to another embodiment, the organic layer includes a light emitting layer, and the light emitting layer may include the above-mentioned compound as a dopant of the light emitting layer.
In another embodiment, the organic layer includes a light-emitting layer, and the light-emitting layer may include the compound as a dopant of the light-emitting layer and may further include a host.
In another embodiment, the organic layer includes a light emitting layer, the light emitting layer includes the compound as a dopant of the light emitting layer, includes a fluorescent host or a phosphorescent host, and may include other organic compounds, metals, or metal compounds as a dopant.
As another example, the organic layer includes a light emitting layer, and the light emitting layer includes the compound as a dopant of the light emitting layer, includes a fluorescent host or a phosphorescent host, and may be used together with an iridium (Ir) dopant.
According to another embodiment, the organic layer includes a light emitting layer, and the light emitting layer may include the compound as a host of the light emitting layer.
As another example, the organic layer includes a light emitting layer, and the light emitting layer includes the compound as a host of the light emitting layer, and may further include a dopant. The content of the dopant may be 1 to 20 parts by weight, and more preferably 1 to 5 parts by weight, relative to 100 parts by weight of the host.
In the organic light-emitting device of the present invention, the organic layer may include an electron-suppressing layer, and the electron-suppressing layer may contain the compound.
In one embodiment of the present disclosure, the first electrode is an anode, and the second electrode is a cathode.
In another embodiment, the first electrode is a cathode and the second electrode is an anode.
For example, the organic light-emitting element may have a stacked-layer structure as described below, but is not limited thereto.
(1) Anode/hole transport layer/light emitting layer/cathode
(2) Anode/hole injection layer/hole transport layer/light emitting layer/cathode
(3) Anode/hole injection layer/hole buffer layer/hole transport layer/light emitting layer/cathode
(4) Anode/hole transport layer/light emitting layer/electron transport layer/cathode
(5) Anode/hole transport layer/luminescent layer/electron transport layer/electron injection layer/cathode
(6) Anode/hole injection layer/hole transport layer/light emitting layer/electron transport layer/cathode
(7) Anode/hole injection layer/hole transport layer/light emitting layer/electron transport layer/electron injection layer/cathode
(8) Anode/hole injection layer/hole buffer layer/hole transport layer/light emitting layer/electron transport layer/cathode
(9) Anode/hole injection layer/hole buffer layer/hole transport layer/light emitting layer/electron transport layer/electron injection layer/cathode
(10) Anode/hole transport layer/electron inhibiting layer/light emitting layer/electron transport layer/cathode
(11) Anode/hole transport layer/electron inhibiting layer/light emitting layer/electron transport layer/electron injection layer/cathode
(12) Anode/hole injection layer/hole transport layer/electron suppression layer/light emitting layer/electron transport layer/cathode
(13) Anode/hole injection layer/hole transport layer/electron suppression layer/light emitting layer/electron transport layer/electron injection layer/cathode
(14) Anode/hole transport layer/light-emitting layer/hole inhibiting layer/electron transport layer/cathode
(15) Anode/hole transport layer/light-emitting layer/hole inhibiting layer/electron transport layer/electron injection layer/cathode
(16) Anode/hole injection layer/hole transport layer/light-emitting layer/hole inhibiting layer/electron transport layer/cathode
(17) Anode/hole injection layer/hole transport layer/light-emitting layer/hole inhibiting layer/electron transport layer/electron injection layer/cathode
The structure of the organic light emitting device of the present invention may have the structure shown in fig. 1 to 3, but is not limited thereto.
Fig. 1 illustrates a structure of an organic light emitting element in which an anode 2, a light emitting layer 3, and a cathode 4 are sequentially stacked on a substrate 1. In the structure as described above, the above-described compound may be contained in the above-described light-emitting layer 3.
Fig. 2 illustrates a structure of an organic light-emitting element in which an anode 2, a hole injection layer 5, a hole transport layer 6, a light-emitting layer 7, an electron transport layer 8, and a cathode 4 are stacked in this order on a substrate 1. In the structure described above, the above-described compound may be contained in the above-described hole injection layer 5, hole transport layer 6, light emitting layer 7, or electron transport layer 8.
Fig. 3 illustrates the structure of an organic light-emitting element in which a substrate 1, an anode 2, a hole injection layer 5, a hole transport layer 6, a light-emitting layer 7, an electron transport layer 8, an electron injection layer 9, and a cathode 4 are sequentially stacked. In the structure as described above, the above-described compound may be contained in the above-described hole injection layer 5, hole transport layer 6, light emitting layer 7, electron transport layer 8, or electron injection layer 9.
For example, the organic light emitting element according to the present invention can be manufactured by the following method: the organic el device is manufactured by depositing a metal, a metal oxide having conductivity, or an alloy thereof on a substrate by a Physical Vapor Deposition (PVD) method such as a sputtering method or an electron beam evaporation method, forming an anode, forming an organic layer including a hole injection layer, a hole transport layer, a light emitting layer, an electron suppression layer, an electron transport layer, and an electron injection layer on the anode, and then depositing a substance that can be used as a cathode on the organic layer. In addition to this method, a cathode material, an organic layer, and an anode material may be sequentially deposited on a substrate to manufacture an organic light-emitting element.
The organic layer may have a multilayer structure including a hole injection layer, a hole transport layer, a layer that performs both electron injection and electron transport, an electron suppression layer, a light-emitting layer, an electron transport layer, an electron injection layer, a layer that performs both electron injection and electron transport, and the like. The organic layer can be produced in a smaller number of layers by a solvent process (solvent process) other than the vapor deposition method, for example, spin coating, dip coating, doctor blading, screen printing, inkjet printing, thermal transfer printing, or the like, using various polymer materials.
The anode is an electrode for injecting holes, and a substance having a large work function is generally preferable as an anode substance so that holes can be smoothly injected into the organic layer. Specific examples of the anode material that can be used in the present invention include metals such as vanadium, chromium, copper, zinc, and gold, or alloys thereof; metal oxides such as Zinc Oxide, Indium Tin Oxide (ITO), and Indium Zinc Oxide (IZO); ZnO-Al or SnO2A combination of a metal such as Sb and an oxide; poly (3-methylthiophene), poly [3,4- (ethylene-1, 2-dioxy) thiophene]Conductive polymers such as (PEDOT), polypyrrole, and polyaniline, but the present invention is not limited thereto.
The cathode is an electrode for injecting electrons, and a substance having a small work function is generally preferable as a cathode substance in order to easily inject electrons into the organic layer. Specific examples of the cathode material include metals such as magnesium, calcium, sodium, potassium, titanium, indium, yttrium, lithium, gadolinium, aluminum, silver, tin, and lead, and alloys thereof; LiF/Al or LiO2And a multilayer structure material such as Al, but not limited thereto.
The hole injection layer is a layer that functions to smoothly inject holes from the anode into the light-emitting layer, and the hole injection substance is a substance that can favorably inject holes from the anode at a low voltage, and preferably, the HOMO (highest occupied molecular orbital) of the hole injection substance is interposed between the work function of the anode substance and the HOMO of the surrounding organic layer. Specific examples of the hole injecting substance include, but are not limited to, metalloporphyrin (porphyrine), oligothiophene, arylamine-based organic substances, hexanitrile-hexaazatriphenylene-based organic substances, quinacridone-based organic substances, perylene-based organic substances, anthraquinone, polyaniline, and polythiophene-based conductive polymers. The thickness of the hole injection layer may be 1 to 150 nm. When the thickness of the hole injection layer is 1nm or more, there is an advantage that the hole injection property can be prevented from being lowered, and when the thickness of the hole injection layer is 150nm or less, there is an advantage that the driving voltage can be prevented from being increased to increase the movement of holes when the thickness of the hole injection layer is too large.
The hole transport layer can function to smooth the transport of holes. The hole-transporting substance is a substance capable of receiving holes from the anode or the hole-injecting layer and transferring the holes to the light-emitting layer, and is preferably a substance having a high mobility to holes. Specific examples thereof include, but are not limited to, arylamine-based organic materials, conductive polymers, and block copolymers in which a conjugated portion and a non-conjugated portion are present simultaneously.
A hole buffer layer may be further provided between the hole injection layer and the hole transport layer, and may contain a hole injection or transport material known in the art.
An electron inhibiting layer may be provided between the hole transport layer and the light emitting layer. The electron-suppressing layer may be formed using the above-mentioned compound or a material known in the art.
The light-emitting layer may emit red, green and/or blue light, and may be formed of a phosphorescent substance or a fluorescent substance. The light-emitting substance is a substance that can receive holes and electrons from the hole-transporting layer and the electron-transporting layer, respectively, and combine them to emit light in the visible light region, and is preferably a substance having high quantum efficiency with respect to fluorescence or phosphorescence. As an example, there is an 8-hydroxyquinoline aluminum complex (Alq)3) (ii) a A carbazole-based compound; dimeric styryl (dimerized styryl) compounds; BAlq; 10-hydroxybenzoquinoline-metal compounds; benzo (b) isAzole, benzothiazole and benzimidazole-based compounds; poly (p-phenylene vinylene)) (PPV) -based polymer; spiro (spiroo) compounds; polyfluorene, rubrene, and the like, but are not limited thereto.
As a host material of the light-emitting layer, there are aromatic fused ring derivatives, heterocyclic ring-containing compounds, and the like. Specifically, the aromatic condensed ring derivatives include anthracene derivatives, pyrene derivatives, naphthalene derivatives, pentacene derivatives, phenanthrene compounds, fluoranthene compounds, and the like, and the heterocyclic ring-containing compounds include carbazole derivatives, dibenzofuran derivatives, and ladder-type furan compoundsPyrimidine derivatives, etc., but are not limited thereto.
When the light-emitting layer emits red light, as a light-emitting dopant, a phosphorescent material such as piqir (acac) (bis (1-phenylisoquinoline) acetylacetonateiridium, bis (1-phenylisoquinoline) acetylacetonateiridium), PQIr (acac) (bis (1-phenylquinoline) acetylacetonateiridium, bis (1-phenylquinoline) iridium), PQIr (tris (1-phenylquinoline) iridium, tris (1-phenylquinoline) iridium), PtOEP (octaethylporphyrin, platinum octaethylporphyrin), or Alq may be used3(tris (8-hydroxyquinolino) aluminum), etc., but is not limited thereto. When the light-emitting layer emits green light, Ir (ppy) can be used as the light-emitting dopant3Examples of the fluorescent substance include phosphorescent substances such as fac tris (2-phenylpyridine) iridium), planar tris (2-phenylpyridine) iridium, and fluorescent substances such as Alq3(tris (8-hydroquinonyl) aluminum, tris (8-hydroxyquinoline) aluminum). When the light-emitting layer emits blue light, (4,6-F2ppy) can be used as the light-emitting dopant2Examples of the fluorescent substance include phosphorescent substances such as Irpic, and fluorescent substances such as spiro-DPVBi, spiro-6P, Distyrylbenzene (DSB), Distyrylarylene (DSA), PFO-based polymers, and PPV-based polymers.
A hole-inhibiting layer may be provided between the electron-transporting layer and the light-emitting layer, and materials known in the art may be used.
The electron transport layer can play a role in smoothing electron transport. Electronic transmission articleThe substance is a substance that can favorably receive electrons from the cathode and transfer them to the light-emitting layer, and is preferably a substance having a high mobility to electrons. Specific examples thereof include Al complexes of 8-hydroxyquinoline and Al complexes containing Alq3Organic radical compounds, hydroxyl brass-metal complexes, etc., but are not limited thereto. The thickness of the electron transport layer may be 1 to 50 nm. When the thickness of the electron transport layer is 1nm or more, there is an advantage that the electron transport property can be prevented from being lowered, and when the thickness of the electron transport layer is 50nm or less, there is an advantage that the driving voltage can be prevented from being increased in order to increase the movement of electrons when the thickness of the electron transport layer is too thick.
The electron injection layer can perform a function of smoothing electron injection. As the electron-injecting substance, the following compounds are preferred: a compound having an ability to transport electrons, having an effect of injecting electrons from a cathode, having an excellent electron injection effect with respect to a light-emitting layer or a light-emitting material, preventing excitons generated in the light-emitting layer from migrating to a hole-injecting layer, and having an excellent thin-film-forming ability. Specifically, there are fluorenone, anthraquinone dimethane, diphenoquinone, thiopyran dioxide, and the like,Azole,Oxadiazole, triazole, imidazole, perylene tetracarboxylic acid, fluorenylidene methane, anthrone, and the like, and derivatives thereof, metal complex compounds, nitrogen-containing five-membered ring derivatives, and the like, but are not limited thereto.
Examples of the metal complex include lithium 8-quinolinolato, zinc bis (8-quinolinolato), copper bis (8-quinolinolato), manganese bis (8-quinolinolato), aluminum tris (2-methyl-8-quinolinolato), and gallium tris (8-quinolinolato), bis (10-hydroxybenzo [ h ] quinoline) beryllium, bis (10-hydroxybenzo [ h ] quinoline) zinc, bis (2-methyl-8-quinoline) gallium chloride, bis (2-methyl-8-quinoline) (o-cresol) gallium, bis (2-methyl-8-quinoline) (1-naphthol) aluminum, bis (2-methyl-8-quinoline) (2-naphthol) gallium, and the like, but are not limited thereto.
The above air chamberThe hole blocking layer is a layer that prevents holes from reaching the cathode and can be formed generally under the same conditions as the hole injection layer. Specifically, there areAn oxadiazole derivative or a triazole derivative, a phenanthroline derivative, BCP, an aluminum complex (aluminum complex), and the like, but the present invention is not limited thereto.
The organic light emitting element according to the present invention may be a top emission type, a bottom emission type, or a bi-directional emission type, depending on the material used.
Modes for carrying out the invention
Hereinafter, examples, comparative examples and the like will be described in detail to specifically describe the present specification. However, the examples and comparative examples according to the present specification may be modified into various forms, and the scope of the present specification is not to be construed as being limited to the examples and comparative examples described in detail below. The examples and comparative examples of the present specification are provided to more fully describe the present specification to those skilled in the art.
< Synthesis example >
1. Synthesis of Compounds 1 to 16
In the above reaction formulae, Ar1 to Ar2 are defined as follows.
1) 2-bromo-1-chloronaphthalene (2-bromo-1-chloronaphthalene) (1eq) and phenylboronic acid (1.1eq), Pd (PPh)3)4(0.1eq)、K2CO3(3eq) was dissolved in Tetrahydrofuran (THF) and water in a ratio of 3:1, heated and refluxed. After the reaction was completed, the reaction mixture was extracted with toluene (toluene), and then with H2Washing with O, followed by recrystallization from toluene (tolumen), 1-chloro-2-phenylnaphthalene (1-chloro-2-phenylnaphthalene) was obtained in 82% yield.
The resulting 1-chloro-2-phenylnaphthalene (1-chloro-2-phenylnaphthalene) (1eq), 4,4,4',4',5,5,5',5' -octamethyl-2,2 '-bis (1,3,2-dioxaborolane) (4,4,4',4',5,5,5',5'-octamethyl-2,2' -bi (1,3,2-dioxaborolane)) (1.2eq), Pd (OAc)2(0.05eq), Tricyclohexylphosphine (PCy)3) (0.1eq) and KOAc (5eq) are added to the diIn an alkane (Dioxane), refluxed and stirred for 12 hours. After the reaction was completed, the reaction mixture was extracted with toluene (toluene), and then with H2Washing with O, followed by recrystallization from Hexane (Hexane), 4,5,5-tetramethyl-2- (2-phenylnaphthalen-1-yl) -1,3,2-dioxaborolan (4,4,5, 5-tetramethyll-2- (2-phenylnapthalen-1-yl) -1,3, 2-dioxaborolan) was obtained in 74% yield.
2) 9-Bromoanthracene (9-bromoanthracene) (1eq) and 2-dibenzofuranboronic acid (2-dibenzofuranboronic acid) (1.1eq), Pd (PPh)3)4(0.1eq)、K2CO3(3eq) was dissolved in THF and water in a ratio of 3:1, heated and refluxed. After the reaction was completed, the reaction mixture was extracted with toluene (toluene), and then with H2Washing with O, followed by recrystallization from toluene (tolumen), 2- (anthracen-9-yl) dibenzofuran (2- (anthracen-9-yl) dibenzofuran) was obtained in 87% yield.
After the resulting 2- (anthracen-9-yl) dibenzofuran (2- (anthracen-9-yl) dibenzofuran) was dissolved in THF, N-bromosuccinimide (NBS) (1.05eq) was dissolved in Dimethylformamide (DMF) and slowly added dropwise. After the reaction was completed, it was extracted with Ethyl Acetate (EA), and then with H2O washing, followed by recrystallization from toluene (tolumen), 2- (10-bromoanthracen-9-yl) dibenzofuran (2- (10-bromoanthracen-9-yl) dibenzofuran) was obtained in 94% yield.
3) The synthesized 4,4,5,5-tetramethyl-2- (2-phenylnaphthalen-1-yl) -1,3,2-dioxaborolan (4,4,5, 5-tetramethy-2- (2-phenylnaphthanen-1-yl) -1,3, 2-dioxaborolan) (1.1eq) and 2- (10-bromoanthracen-9-yl) dibenzofuran (2- (10-bromoanthracen-9-yl) dibenzofuran) (1eq), Pd (PPh)3)4(0.1eq)、K2CO3(3eq) dissolved in 3:1THF and water in the proportions, heated and refluxed. After the reaction was completed, the reaction mixture was extracted with toluene (toluene), and then with H2O washing, followed by recrystallization from toluene (tolumen) and EA, can give compound 1 in 65% yield.
Compounds 2 to 16 can also be synthesized by the method described above, and synthesized compounds 1 to 16 are described in table 1 below.
[ Table 1]
2. Synthesis of Compounds 17 and 18
The synthesized Compound 2(10g) was added to C6D6(200ml), add AlCl3(2g) After that, the mixture was stirred for two hours. After the reaction is finished, D is added2O (30ml), stirred for 30 minutes, and then trimethylamine (3ml) was added dropwise. After extraction with toluene (toluene), H is added2O washing, followed by recrystallization from toluene (tolumen) and EA, can give compound 17 in 54% yield. Compound 18 can also be synthesized as described above.
3. Synthesis of Compounds 19 and 20
Compound 19-A and compound 20-A can also be synthesized by the same method as that for the synthesis of compound 17 and 18. Compounds 19 and 20 can be synthesized by the methods described above based on the synthesized compounds 19-A and 20-A.
The following [ Table 2] is a table showing the data for confirming the synthesis of the above-mentioned compounds 1 to 20.
[ Table 2]
Compound (I)
cal.m/s
exp.m/s[M+]
1
546.7
546
2
546.7
546
3
546.7
546
4
596.7
596
5
546.7
546
6
652.8
652
7
698.9
698
8
622.8
622
9
546.7
546
10
546.7
546
11
646.8
646
12
728.9
728
13
622.8
622
14
711.9
711
15
622.8
622
16
672.8
672
17
572.8
572
18
572.8
572
19
617.9
617
20
561.8
561
Synthesis of BD-1
After adding the intermediates 1, 3-dibromo-5-chlorobenzene (1, 3-dibromo-5-chlorobenzene) (1eq), bis (4- (tert-butyl) phenyl) amine (bis (4- (tert-butyl) phenyl) amine) (3.0eq), sodium tert-butoxide (sodium-butyl) oxide) (3eq), bis (tri (tert-butyl) phosphine) palladium (0) (bis (tri (tert-butyl) phosphine) palladium (0)) (0.05eq) to toluene under a nitrogen atmosphere, heating at 120 ℃ and stirring for 5 hours. After the reaction is finished, cooling the reaction liquid to room temperature, adding water and NH4Cl solution, separating liquid, using MgSO4(anhydrous) and filtered. The filtered solution was distilled off under reduced pressure and purified by recrystallization, whereby N1, N1, N3, N3-tetrakis (4- (tert-butyl) phenyl) -5-chlorobenzene-1, 3-diamine (N1, N1, N3, N3-tetrakis (4- (tert-butyl) phenyl) -5-chlorobenzene-1, 3-diamine) was obtained in a yield of 58%.
N1, N1, N3, N3-tetrakis (4- (tert-butyl) phenyl) -5-chlorobenzene-1, 3-diamine (1eq), BI3(1.5eq) was dissolved in dichlorobenzene and stirred at 130 ℃ for 3 hours. After the reaction, the reaction mixture was cooled to room temperature, extracted, and MgSO4(anhydrous) treatment and filtration. The filtered solution was distilled off under reduced pressure, purified by column chromatography (toluene/hexane) and then recrystallized to give 2,12-di-tert-butyl-5,9-bis (4- (tert-butyl) phenyl) -7-chloro-5,9-dihydro-5,9-diaza-13b-boranaphtho [3,2,1-de ] in 65% yield]Anthracene (2,12-di-tert-butyl-5,9-bis (4- (tert-butyl) phenyl) -7-chloro-5, 9-dihydo-5, 9-diaza-13 b-boranophto [3,2, 1-de)]anthracene)。
Under nitrogen atmosphere, the intermediate 2,12-di-tert-butyl-5,9-bis (4- (tert-butyl) phenyl) -7-chloro-5,9-dihydro-5,9-diaza-13 b-boranonaphtho [3,2,1-de]After anthracene (1eq), diphenylamine (diphenylamine) (1.5eq), sodium tert-butoxide (2eq), Bis (tri-butyl) phosphine) palladium (0) (Bis (tri-butyl) phosphine) palladium (0)) (0.03eq) were added to toluene, it was heated and stirred at 120 ℃ for 5 hours. After the reaction is finished, cooling the reaction liquid to room temperature, adding water and NH4Cl solution, separating liquid, using MgSO4(anhydrous) treatment and filtration. The filtered solution was distilled off under reduced pressure and purified by recrystallization, thereby obtaining BD-1 in a yield of 68%. The final compound was confirmed by a mass spectrometer (mass spectrometer). [ cal.m/s: 811.97, exp.m/s (M +)810.6]
The compound BD-1 produced as described above is shown below.
< example >
The structures of the compounds used in the following examples and comparative examples are shown below, and the compounds corresponding to chemical formula 1 of the present application were produced by the same procedure as in the above reaction formula.
1) Example 1
A glass substrate on which ITO (indium tin oxide) was coated in a thickness of 150nm was placed in distilled water in which a detergent was dissolved, and washed with ultrasonic waves. In this case, the detergent used was a product of fisher (fischer Co.) and the distilled water used was distilled water filtered twice with a Filter (Filter) manufactured by Millipore Co. After washing ITO for 30 minutes, ultrasonic washing was performed for 10 minutes by repeating twice with distilled water. After the completion of the distilled water washing, the resultant was ultrasonically washed with a solvent of isopropyl alcohol, acetone, or methanol, dried, and then transported to a plasma cleaning machine. After the substrate was cleaned with nitrogen plasma for 5 minutes, the substrate was transported to a vacuum evaporator. On the ITO transparent electrode thus prepared, the HAT-CN compound was thermally vacuum-deposited to a thickness of 5nm to form a hole injection layer. Next, HTL1 was thermally vacuum-deposited at a thickness of 100nm, and then HTL2 was thermally vacuum-deposited at a thickness of 10nm, thereby forming a hole transport layer. Then, the above-mentioned compound 1 as a host and BD-1 (weight ratio 95:5) as a dopant were simultaneously vacuum-evaporated to form a light-emitting layer having a thickness of 20 nm. Subsequently, ETL was vacuum-evaporated to a thickness of 20nm to form an electron transport layer. Then, LiF was vacuum-evaporated to a thickness of 0.5nm to form an electron injection layer. Subsequently, aluminum was deposited to a thickness of 100nm to form a cathode, thereby producing an organic light-emitting device.
2) Examples 2 to 20 and comparative examples 1 to 6
The organic light emitting devices were manufactured by the same method as in example 1 above, and the organic light emitting devices were manufactured using, as the host and the dopant, the substances and contents (parts by weight based on the sum of the host and the dopant of 1) shown in table 3 below, and the organic light emitting devices manufactured in examples 1 to 20 and comparative examples 1 to 6 above were measured at 10mA/cm2The current density of (A) was measured at 20mA/cm2The time (LT) required for the initial luminance to be 95% was measured at the current density of (1), and the results are shown in table 4 below.
[ Table 3]
[ Table 4]
As shown in table 4 above, if dibenzofuranyl and substituted naphthyl groups are introduced into anthracene, intermolecular stacking can be prevented, and thus, device efficiency and lifetime can be improved. Examples 1 to 20 using the compound represented by chemical formula 1 as a host can confirm that the driving voltage is low, and characteristics of high efficiency and long life are exhibited, as compared with comparative examples 1 to 6.
Specifically, in examples 1 to 20, the driving voltage was reduced by about 0.51(V @10 mA/cm) at the maximum as compared with comparative examples 1 to 62) The luminous efficiency is increased by 50% at the maximum, and the Lifetime (LT) is increased by 190hr at the maximum.
In particular, in the case of examples 17 to 20, it was confirmed that the stability of the polymer can be improved by substituting deuterium in anthracene, dibenzofuranyl group, or naphthyl group, thereby increasing the device life.
- 上一篇：一种医用注射器针头装配设备
- 下一篇：经取代的吡咯烷酰胺I