WO2022206055A1 - 有机电致发光材料、电子元件及电子装置 - Google Patents
有机电致发光材料、电子元件及电子装置 Download PDFInfo
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- WO2022206055A1 WO2022206055A1 PCT/CN2021/140628 CN2021140628W WO2022206055A1 WO 2022206055 A1 WO2022206055 A1 WO 2022206055A1 CN 2021140628 W CN2021140628 W CN 2021140628W WO 2022206055 A1 WO2022206055 A1 WO 2022206055A1
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- DMVOXQPQNTYEKQ-UHFFFAOYSA-N biphenyl-4-amine Chemical group C1=CC(N)=CC=C1C1=CC=CC=C1 DMVOXQPQNTYEKQ-UHFFFAOYSA-N 0.000 description 4
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- 229910052720 vanadium Inorganic materials 0.000 description 1
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- 229910052727 yttrium Inorganic materials 0.000 description 1
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 description 1
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Definitions
- the present application belongs to the technical field of organic materials, and in particular relates to an organic electroluminescent material, an electronic component and an electronic device.
- Organic electroluminescent devices also known as organic light-emitting diodes, refer to devices in which organic light-emitting materials are excited by an electric current to emit light under the action of an electric field.
- organic electroluminescent devices Compared with inorganic light-emitting materials, organic electroluminescent devices (OLEDs) have the advantages of active light emission, large optical path range, low driving voltage, high brightness, high efficiency, low energy consumption, and simple fabrication process. Due to these advantages, organic electroluminescent materials and devices have become one of the most popular research topics in the scientific and industrial circles.
- An organic electroluminescence device generally includes an anode, a hole transport layer, an organic electroluminescence layer as an energy conversion layer, an electron transport layer and a cathode which are stacked in sequence.
- an electric field is generated between the two electrodes.
- the electrons on the cathode side move to the electroluminescent layer, and the holes on the anode side also move to the light-emitting layer, and the electrons and holes combine in the electroluminescent layer.
- Excitons are formed, and the excitons are in an excited state to release energy to the outside, thereby causing the electroluminescent layer to emit light to the outside.
- organic electroluminescent materials for hole transport layers in organic electroluminescent devices have been disclosed. However, it is still necessary to continue to develop new materials to further improve the performance of electronic components.
- the purpose of the present application is to provide an organic electroluminescent material, an electronic device and an electronic device.
- the organic electroluminescent material can be used in an organic electroluminescent device to improve the performance of the organic electroluminescent device.
- a first aspect of the present application provides an organic electroluminescent material having a structure as represented by formula I:
- Ar 1 and Ar 2 are the same or different, and are independently selected from substituted or unsubstituted aryl groups with 6-40 carbon atoms and substituted or unsubstituted heteroaryl groups with 3-30 carbon atoms;
- L 1 and L 2 are the same or different, and are each independently selected from a single bond, a substituted or unsubstituted arylene group with 6-30 carbon atoms, and a substituted or unsubstituted heteroarylene group with 6-30 carbon atoms base;
- Ar 3 and Ar 4 are the same or different, and are each independently selected from substituted or unsubstituted aryl groups having 6 to 30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3 to 30 carbon atoms, and Ar At least one of 3 and Ar 4 is selected from wherein, X is selected from C(R 3 R 4 ), O, S;
- R 3 and R 4 are the same or different, and are each independently selected from an alkyl group having 1 to 5 carbon atoms, an aryl group having 6 to 12 carbon atoms, and a heteroaryl group having 3 to 12 carbon atoms; or , R 3 and R 4 form a saturated or unsaturated 5-13-membered ring;
- R 1 and R 2 are the same or different, and are independently selected from deuterium, halogen group, cyano group, alkyl group with 1 to 5 carbon atoms, trialkylsilyl group with 3 to 12 carbon atoms, carbon Aryl having 6 to 12 atoms, and heteroaryl having 3 to 12 carbon atoms;
- R 1 and R 2 are represented by Ri
- n 1 and n 2 are represented by ni
- ni represents the number of Ri
- i is a variable, representing 1 and 2, when i is 1 and 2, ni is selected from 0, 1, 2, 3 or 4; and when n i is greater than 1, any two R i are the same or different; optionally, any two adjacent R i are connected to each other to form an unsaturated 6-10-membered ring ;
- the substituents in Ar 1 , Ar 2 , L 1 , L 2 , Ar 3 and Ar 4 are the same or different, and are each independently selected from deuterium, halogen group, cyano group, trioxane having 3 to 12 carbon atoms Silyl group, triphenylsilyl group, alkyl group with 1 to 10 carbon atoms, aryl group with 6 to 20 carbon atoms, heteroaryl group with 3 to 20 carbon atoms, and 3 to 20 carbon atoms 10 cycloalkyl; optionally, any two adjacent substituents in Ar 1 and Ar 2 form a substituted or unsubstituted 3-15-membered ring, and the substituents in the 3-15-membered ring are independently It is selected from deuterium, halogen group, cyano group, trialkylsilyl group with 3-6 carbon atoms, triphenylsilyl group, and alkyl group with 1-5 carbon atoms.
- a second aspect of the present application provides an electronic component, comprising an anode and a cathode disposed opposite to each other, and a functional layer disposed between the anode and the cathode; the functional layer includes the above-mentioned organic electroluminescent material.
- a third aspect of the present application provides an electronic device including the above electronic component.
- FIG. 1 is a schematic structural diagram of an organic electroluminescent device according to an embodiment of the present application.
- FIG. 2 is a schematic structural diagram of a first electronic device according to an embodiment of the present application.
- FIG. 3 is a schematic structural diagram of a photoelectric conversion device according to an embodiment of the present application.
- FIG. 4 is a schematic structural diagram of a second electronic device according to an embodiment of the present application.
- a first aspect of the present application provides an organic electroluminescent material having a structure as represented by formula I:
- Ar 1 and Ar 2 are the same or different, and are independently selected from substituted or unsubstituted aryl groups with 6-40 carbon atoms and substituted or unsubstituted heteroaryl groups with 3-30 carbon atoms;
- L 1 and L 2 are the same or different, and are each independently selected from a single bond, a substituted or unsubstituted arylene group with 6-30 carbon atoms, and a substituted or unsubstituted heteroarylene group with 6-30 carbon atoms base;
- Ar 3 and Ar 4 are the same or different, and are each independently selected from substituted or unsubstituted aryl groups having 6 to 30 carbon atoms, substituted or unsubstituted heteroaryl groups having 3 to 30 carbon atoms, and Ar At least one of 3 and Ar 4 is selected from wherein, X is selected from C(R 3 R 4 ), O, S;
- R 3 and R 4 are the same or different, and are each independently selected from an alkyl group having 1 to 5 carbon atoms, an aryl group having 6 to 12 carbon atoms, and a heteroaryl group having 3 to 12 carbon atoms; or , R 3 and R 4 form a saturated or unsaturated 5-13-membered ring;
- R 1 and R 2 are the same or different, and are independently selected from deuterium, halogen group, cyano group, alkyl group with 1 to 5 carbon atoms, trialkylsilyl group with 3 to 12 carbon atoms, carbon Aryl having 6 to 12 atoms, and heteroaryl having 3 to 12 carbon atoms;
- R 1 and R 2 are represented by Ri
- n 1 and n 2 are represented by ni
- ni represents the number of Ri
- i is a variable, representing 1 and 2, when i is 1 and 2, ni is selected from 0, 1, 2, 3 or 4; and when n i is greater than 1, any two R i are the same or different; optionally, any two adjacent R i are connected to each other to form an unsaturated 6-10-membered ring ;
- the substituents in Ar 1 , Ar 2 , L 1 , L 2 , Ar 3 and Ar 4 are the same or different, and are each independently selected from deuterium, halogen group, cyano group, trioxane having 3 to 12 carbon atoms Silyl group, triphenylsilyl group, alkyl group with 1 to 10 carbon atoms, aryl group with 6 to 20 carbon atoms, heteroaryl group with 3 to 20 carbon atoms, and 3 to 20 carbon atoms 10 cycloalkyl; optionally, any two adjacent substituents in Ar 1 and Ar 2 form a substituted or unsubstituted 3-15-membered ring, and the substituents in the 3-15-membered ring are independently It is selected from deuterium, halogen group, cyano group, trialkylsilyl group with 3-6 carbon atoms, triphenylsilyl group, and alkyl group with 1-5 carbon atoms.
- the terms “optional” and “optionally” mean that the subsequently described event or circumstance can but need not occur, and that the description includes instances where the event or circumstance does or does not occur.
- “optionally, two adjacent substituents XX form a ring” means that the two substituents may but need not form a ring, including: the situation where two adjacent substituents form a ring and two A scenario in which adjacent substituents do not form a ring.
- any two adjacent substituents in Ar 1 and Ar 2 form a substituted or unsubstituted 3-15-membered ring refers to any two adjacent substituents in Ar 1 and Ar 2
- a substituted or unsubstituted 3- to 15-membered ring may be formed, and each may exist independently.
- any two adjacent substituents may include two substituents on the same atom, and may also include two adjacent atoms each having one Substituents; wherein, when there are two substituents on the same atom, the two substituents can form a saturated or unsaturated ring with the atom to which they are commonly connected; when two adjacent atoms have one substituent respectively , the two substituents can be fused to form a ring.
- any two adjacent R i are connected to each other to form an unsaturated 6-10-membered ring
- any two adjacent R 2 are connected to each other to form an unsaturated 6-10 membered ring with the atoms to which they are commonly connected.
- the ring may be, for example, an aromatic ring, and specific examples of the aromatic ring include a benzene ring naphthalene ring Philippine ring Wait).
- one of Ar and Ar is selected from Ar 3 is Ar 4 is not or Ar 4 as Ar 3 is not
- Ar 3 and Ar 4 are both selected from
- each q is independently 0, 1, 2 or 3
- each R is independently selected from hydrogen, deuterium, fluorine, chlorine
- formula Q-1 represents that there are q substituents R" on the benzene ring.
- each R" can be the same or different, and the options of each R" do not affect each other;
- formula Q-2 indicates that each benzene ring of biphenyl has q substituents R", and the R" on the two benzene rings The number q of "substituents" can be the same or different, each R" can be the same or different, and the options of each R" do not affect each other.
- substituted or unsubstituted means that the functional group described after the term may or may not have a substituent (hereinafter, for the convenience of description, the substituents are collectively referred to as Rc).
- substituted or unsubstituted aryl refers to an aryl group having a substituent Rc or an unsubstituted aryl group.
- the above-mentioned substituent group, namely Rc may be, for example, deuterium, halogen group, cyano group, trialkylsilyl group, triphenylsilyl group, alkyl group, aryl group, heteroaryl group, and cycloalkyl group.
- the number of carbon atoms of a substituted or unsubstituted functional group refers to the number of all carbon atoms. For example, if L is selected from a substituted arylene group having 12 carbon atoms, then all carbon atoms in the arylene group and the substituents thereon are 12. For example: Ar is Then the number of carbon atoms is 10; L is Its carbon number is 12.
- an aryl group refers to an optional functional group or substituent derived from an aromatic carbocyclic ring.
- Aryl groups can be monocyclic aryl groups (eg, phenyl) or polycyclic aryl groups, in other words, aryl groups can be monocyclic aryl groups, fused-ring aryl groups, two or more monocyclic aryl groups conjugated through carbon-carbon bonds. Cyclic aryl groups, monocyclic aryl groups and fused-ring aryl groups linked by carbon-carbon bond conjugation, two or more fused-ring aryl groups linked by carbon-carbon bond conjugation.
- two or more aromatic groups linked by carbon-carbon bond conjugation may also be considered aryl groups in the present application.
- the fused ring aryl group may include, for example, a bicyclic fused aryl group (eg, naphthyl), a tricyclic fused aryl group (eg, phenanthrenyl, fluorenyl, anthracenyl), and the like.
- the aryl group does not contain heteroatoms such as B, N, O, S, P, Se and Si.
- biphenyl, terphenyl, etc. are aryl groups.
- aryl groups may include, but are not limited to, phenyl, naphthyl, fluorenyl, anthracenyl, phenanthryl, biphenyl, terphenyl, benzo[9,10]phenanthryl, pyrenyl, benzofluoranthene base, Base et al.
- the arylene group referred to refers to a divalent group formed by the further loss of one hydrogen atom from the aryl group.
- a substituted aryl group may be one or more than two hydrogen atoms in the aryl group replaced by a group such as a deuterium atom, a halogen group, -CN, an aryl group, a heteroaryl group, a trialkylsilyl group, an alkyl group, a ring Alkyl, alkoxy and other groups are substituted.
- a group such as a deuterium atom, a halogen group, -CN, an aryl group, a heteroaryl group, a trialkylsilyl group, an alkyl group, a ring Alkyl, alkoxy and other groups are substituted.
- heteroaryl-substituted aryl groups include, but are not limited to, dibenzofuranyl-substituted phenyl groups, dibenzothienyl-substituted phenyl groups, pyridyl-substituted phenyl groups, and the like.
- the number of carbon atoms in a substituted aryl group refers to the total number of carbon atoms in the aryl group and the substituent on the aryl group, for example, a substituted aryl group with a carbon number of 18 refers to the aryl group and the substituted aryl group.
- the total number of carbon atoms in the base is 18.
- a heteroaryl group refers to a monovalent aromatic ring or a derivative thereof containing at least one heteroatom in the ring, and the heteroatom can be at least one of B, O, N, P, Si, Se and S.
- a heteroaryl group can be a monocyclic heteroaryl group or a polycyclic heteroaryl group, in other words, a heteroaryl group can be a single aromatic ring system or multiple aromatic ring systems linked by carbon-carbon bonds, and any aromatic
- the ring system is an aromatic monocyclic ring or an aromatic fused ring.
- heteroaryl groups can include thienyl, furyl, pyrrolyl, imidazolyl, thiazolyl, oxazolyl, oxadiazolyl, triazolyl, pyridyl, bipyridyl, pyrimidinyl, triazinyl, acridinyl, pyridazinyl, pyrazinyl, quinolinyl, quinazolinyl, quinoxalinyl, phenoxazinyl, phthalazinyl, pyridopyrimidinyl, pyridopyrazinyl, pyrazinopyrazinyl Azinyl, isoquinolinyl, indolyl, carbazolyl, benzoxazolyl, benzimidazolyl, benzothiazolyl, benzocarbazolyl, benzothienyl, dibenzothienyl, thiophene thieny
- heteroarylene group refers to a divalent group formed by the further loss of one hydrogen atom from the heteroaryl group.
- a substituted heteroaryl group may be a heteroaryl group in which one or more than two hydrogen atoms are replaced by a group such as a deuterium atom, a halogen group, -CN, an aryl group, a heteroaryl group, a trialkylsilyl group, an alkyl group , cycloalkyl, alkoxy and other groups.
- aryl-substituted heteroaryl groups include, but are not limited to, phenyl-substituted dibenzofuranyl, phenyl-substituted dibenzothienyl, phenyl-substituted pyridyl, and the like. It should be understood that the number of carbon atoms in a substituted heteroaryl group refers to the total number of carbon atoms in the heteroaryl group and the substituents on the heteroaryl group.
- the number of carbon atoms of the aryl group as a substituent may be 6 to 20, for example, the number of carbon atoms may be 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20.
- Specific examples of aryl groups as substituents include, but are not limited to, phenyl, biphenyl, naphthyl, anthracenyl, phenanthryl, base.
- the number of carbon atoms of the heteroaryl group as a substituent may be 3 to 20, for example, the number of carbon atoms may be 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14 , 15, 16, 17, 18, 19, 20.
- Specific examples of heteroaryl groups as substituents include, but are not limited to, pyridyl, pyrimidinyl, carbazolyl, dibenzofuranyl, dibenzothienyl, quinolinyl, quinazolinyl, quinoxalinyl , isoquinolinyl.
- the unpositioned linker refers to a single bond extending from the ring system It means that one end of the linking bond can be connected to any position in the ring system through which the bond runs, and the other end is connected to the rest of the compound molecule.
- the naphthyl group represented by the formula (f) is connected to other positions of the molecule through two non-positioned linkages running through the bicyclic ring.
- the dibenzofuranyl group represented by the formula (X') is connected to other positions of the molecule through a non-positional linkage extending from the middle of one side of the benzene ring,
- the meaning it represents includes any possible connection mode shown by formula (X'-1) to formula (X'-4):
- the alkyl group having 1 to 10 carbon atoms may include a straight-chain alkyl group having 1 to 10 carbon atoms and a branched alkyl group having 3 to 10 carbon atoms.
- the number of carbon atoms of the alkyl group can be, for example, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, and specific examples of the alkyl group include, but are not limited to, methyl, ethyl, n-propyl, isopropyl Propyl, n-butyl, isobutyl, tert-butyl, n-pentyl, isopentyl, neopentyl, n-hexyl, n-heptyl, n-octyl, 2-ethylhexyl, nonyl, decyl, 3,7-Dimethyloctyl, etc.
- cycloalkyl examples include, but are not limited to, cyclopentyl, cyclohexyl, and adamantyl.
- the halogen group may be, for example, fluorine, chlorine, bromine, or iodine.
- Ar 1 and Ar 2 are each independently selected from substituted or unsubstituted aryl groups having 6 to 33 carbon atoms, and substituted or unsubstituted heteroaryl groups having 5 to 18 carbon atoms.
- Ar 1 and Ar 2 are each independently selected from the group consisting of 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33 substituted or unsubstituted aryl groups, the number of carbon atoms is 5, 6, 7, 8, 9, 10, 11, 12, Substituted or unsubstituted heteroaryl of 13, 14, 15, 16, 17, 18.
- the substituents in Ar 1 and Ar 2 are each independently selected from deuterium, fluorine, cyano, trimethylsilyl, triphenylsilyl, alkyl with 1 to 5 carbon atoms, Aryl with 6-12, heteroaryl with 5-12 carbon atoms, cycloalkyl with 5-10 carbon atoms; optionally, any two adjacent substitutions in Ar 1 and Ar 2 form a substituted or unsubstituted 5-13-membered ring, and the substituents in the 5-13-membered ring are independently selected from deuterium, fluorine, cyano, trimethylsilyl, triphenylsilyl, methyl , ethyl, isopropyl, tert-butyl.
- Ar 1 and Ar 2 are each independently selected from substituted or unsubstituted phenyl, substituted or unsubstituted naphthyl, substituted or unsubstituted biphenyl, substituted or unsubstituted fluorenyl, substituted or unsubstituted Substituted dibenzofuranyl, substituted or unsubstituted dibenzothienyl, substituted or unsubstituted carbazolyl, substituted or unsubstituted phenanthryl, substituted or unsubstituted triphenylene, substituted or unsubstituted Pyreneyl, substituted or unsubstituted anthracenyl.
- the substituents in Ar 1 and Ar 2 are each independently selected from deuterium, fluorine, cyano, trimethylsilyl, triphenylsilyl, methyl, ethyl, isopropyl, tert-butyl, Cyclopentyl, cyclohexyl, adamantyl, pyridyl, phenyl, naphthyl, biphenyl; optionally, any two adjacent substituents in Ar 1 and Ar 2 form adamantane Cyclopentane Cyclohexane Fluorene ring or tert-butyl substituted fluorene ring
- Ar 1 and Ar 2 are each independently selected from substituted or unsubstituted groups W, and unsubstituted groups W are selected from the following groups:
- the substituted group W has one or more substituents, each of which is independently selected from deuterium, fluorine, cyano, trimethylsilyl, triphenylsilyl, methyl, ethyl group, isopropyl group, tert-butyl group, cyclopentyl group, cyclohexyl group, adamantyl group, pyridyl group, phenyl group, naphthyl group, biphenyl group, and when the number of substituent groups is more than 1, each substituent group is the same or different .
- substituents each of which is independently selected from deuterium, fluorine, cyano, trimethylsilyl, triphenylsilyl, methyl, ethyl group, isopropyl group, tert-butyl group, cyclopentyl group, cyclohexyl group, adamantyl group, pyridyl group, phenyl group, naphthy
- Ar 1 and Ar 2 are each independently selected from the following groups:
- Ar 1 and Ar 2 are each independently selected from the following groups:
- L 1 and L 2 are each independently selected from a single bond, a substituted or unsubstituted arylene group having 6 to 20 carbon atoms.
- L 1 and L 2 are each independently selected from single bonds, substitutions with carbon atoms of 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 or unsubstituted arylene.
- the substituents in L 1 and L 2 are each independently selected from deuterium, fluorine, cyano, alkyl with 1-5 carbon atoms, aryl group with 6-12 carbon atoms, trimethylsilicon base.
- L 1 and L 2 are each independently selected from a single bond, a substituted or unsubstituted arylene group having 6 to 12 carbon atoms.
- the substituents in L 1 and L 2 are each independently selected from deuterium, fluorine, cyano, methyl, ethyl, isopropyl, tert-butyl, phenyl, trimethylsilyl.
- L 1 and L 2 are each independently selected from a single bond, substituted or unsubstituted phenylene, substituted or unsubstituted naphthylene, and substituted or unsubstituted biphenylene.
- the substituents in L 1 and L 2 are each independently selected from deuterium, fluorine, cyano, methyl, ethyl, isopropyl, tert-butyl, phenyl, trimethylsilyl.
- L and L are each independently selected from a single bond, a substituted or unsubstituted group V, and the unsubstituted group V is selected from the following groups:
- the substituted group V has one or more substituents, each of which is independently selected from deuterium, fluorine, cyano, methyl, ethyl, isopropyl, tert-butyl, phenyl , naphthyl, trimethylsilyl, and when the number of substituents is greater than 1, each substituent is the same or different.
- L 1 and L 2 are each independently selected from a single bond or the following groups:
- L 1 and L 2 are each independently selected from a single bond or the following groups:
- Ar 3 and Ar 4 are each independently selected from a substituted or unsubstituted aryl group with 6-20 carbon atoms, a substituted or unsubstituted hetero group with 12-16 carbon atoms Aryl; and at least one of Ar 3 and Ar 4 is selected from
- Ar 3 and Ar 4 are each independently selected from substituted or unsubstituted with 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 carbon atoms
- the aryl group is a substituted or unsubstituted heteroaryl group with 12, 13, 14, 15, 16 carbon atoms.
- the substituents in Ar 3 and Ar 4 are each independently selected from deuterium, fluorine, cyano, trimethylsilyl, triphenylsilyl, alkyl with 1 to 5 carbon atoms, It is an aryl group of 6 to 12 and a heteroaryl group of 3 to 12 carbon atoms.
- Ar 3 and Ar 4 are each independently selected from substituted or unsubstituted groups Q, and unsubstituted groups Q are selected from the following groups:
- the substituted group Q has one or more substituents, each of which is independently selected from deuterium, fluorine, cyano, trimethylsilyl, triphenylsilyl, methyl, ethyl group, isopropyl group, tert-butyl group, phenyl group, naphthyl group, biphenyl group, and when the number of substituent groups is greater than 1, each substituent group is the same or different.
- Ar and Ar are each independently selected from the following groups:
- Ar and Ar are each independently selected from the following groups:
- Ar 3 is selected from
- R 3 and R 4 are each independently selected from methyl, ethyl, isopropyl, tert-butyl, phenyl, naphthyl, biphenyl, pyridyl, pyrimidinyl, quinolyl, Isoquinolyl, dibenzofuranyl, dibenzothienyl, carbazolyl; alternatively, R 3 and R 4 form cyclopentane, cyclohexane, fluorene rings.
- R 1 and R 2 are each independently selected from deuterium, fluoro, cyano, methyl, ethyl, isopropyl, tert-butyl, trimethylsilyl, phenyl, naphthyl, bi Phenyl, pyridyl, pyrimidinyl, quinolyl, isoquinolyl, dibenzofuranyl, dibenzothienyl, carbazolyl.
- the organic electroluminescent material is selected from the group consisting of the following compounds:
- a second aspect of the present application provides an electronic component, comprising an anode and a cathode disposed opposite to each other, and a functional layer disposed between the anode and the cathode; the functional layer includes the organic electroluminescent material of the present application.
- the functional layer includes a hole transport layer
- the hole transport layer includes the organic electroluminescent material of the present application.
- the electronic element is an organic electroluminescence device or a photoelectric conversion device.
- the electronic component is an organic electroluminescence device.
- the hole transport layer includes a first hole transport layer and a second hole transport layer, the first hole transport layer is closer to the anode than the second hole transport layer, wherein,
- the second hole transport layer includes the organic electroluminescent material of the present application.
- the electronic component may be an organic electroluminescent device.
- the organic electroluminescent device may include an anode 100 , a first hole transport layer 321 , a second hole transport layer 322 , an organic light emitting layer 330 , an electron transport layer 340 and a cathode 200 which are stacked in sequence.
- the anode 100 includes an anode material, which is preferably a material with a large work function that facilitates hole injection into the functional layer.
- anode materials include: metals such as nickel, platinum, vanadium, chromium, copper, zinc and gold or alloys thereof; metal oxides such as zinc oxide, indium oxide, indium tin oxide (ITO) and indium zinc oxide (IZO); Combined metals and oxides such as ZnO:Al or SnO2: Sb; or conducting polymers such as poly(3-methylthiophene), poly[3,4-(ethylene-1,2-dioxy)thiophene ](PEDT), polypyrrole and polyaniline, but not limited thereto. It is preferable to include a transparent electrode comprising indium tin oxide (ITO) as an anode.
- ITO indium tin oxide
- the hole transport layer includes one or more hole transport materials, and the hole transport materials can be selected from carbazole polymers, carbazole-linked triarylamine compounds or other types of compounds, which are not covered in this application. Make special restrictions.
- the hole transport layer includes a first hole transport layer 321 and a second hole transport layer 322 .
- the first hole transport layer 321 is not limited, for example, it may be composed of the compound NPB.
- the second hole transport layer 322 contains the organic electroluminescent material of the present application.
- the organic light-emitting layer 330 may be composed of a single light-emitting layer material, or may include a host material and a dopant material.
- the organic light-emitting layer 330 is composed of a host material and a dopant material.
- the holes injected into the organic light-emitting layer 330 and the electrons injected into the organic light-emitting layer 330 can recombine in the organic light-emitting layer 330 to form excitons, and the excitons transfer energy.
- the host material transfers energy to the dopant material, thereby enabling the dopant material to emit light.
- the host material of the organic light-emitting layer 330 may be metal chelate compounds, bis-styryl derivatives, aromatic amine derivatives, dibenzofuran derivatives or other types of materials, which are not specifically limited in this application.
- the host material of the organic light-emitting layer 330 may be RH-1 or GH-1.
- the dopant material of the organic light-emitting layer 330 may be a compound having a condensed aryl ring or a derivative thereof, a compound having a heteroaryl ring or a derivative thereof, an aromatic amine derivative or other materials, which are not specially made in this application. limits.
- the dopant material of the organic light-emitting layer 330 may be Ir(dmpq) 2 (acac) or Ir(ppy) 3 .
- the electron transport layer 340 may be a single-layer structure or a multi-layer structure, which may include one or more electron transport materials, and the electron transport materials may be selected from, but not limited to, ET-1, ET-2, TPBi, LiQ , benzimidazole derivatives, oxadiazole derivatives, quinoxaline derivatives or other electron transport materials.
- a hole blocking layer may also be provided between the organic light emitting layer and the electron transport layer.
- the material of the hole blocking layer can be selected with reference to the prior art, which is not limited in this application, for example, it can be HB-1.
- the cathode 200 may include a cathode material, which is a material with a small work function that facilitates the injection of electrons into the functional layer.
- cathode materials include, but are not limited to, metals such as magnesium, calcium, sodium, potassium, titanium, indium, yttrium, lithium, gadolinium, aluminum, silver, tin, and lead or alloys thereof; or multi-layer materials such as LiF/Al , Liq/Al, LiO 2 /Al, LiF/Ca, LiF/Al and BaF 2 /Ca.
- a metal electrode comprising magnesium and silver is preferably included as the cathode.
- a hole injection layer 310 may be further disposed between the anode 100 and the first hole transport layer 321 to enhance the capability of injecting holes into the first hole transport layer 321 .
- the hole injection layer 310 can be selected from benzidine derivatives, starburst arylamine compounds, phthalocyanine derivatives or other materials, which are not specifically limited in this application.
- the hole injection layer 310 may be composed of HAT-CN or F4-TCNQ.
- an electron injection layer 350 may also be disposed between the cathode 200 and the electron transport layer 340 to enhance the capability of injecting electrons into the electron transport layer 340 .
- the electron injection layer 350 may include inorganic materials such as alkali metal sulfide and alkali metal halide, or may include a complex compound of alkali metal and organic matter.
- the electron injection layer 350 may include Yb.
- the electronic component may be a photoelectric conversion device.
- the photoelectric conversion device may include an anode 100 and a cathode 200 disposed opposite to each other, and a functional layer 300 disposed between the anode 100 and the cathode 200; the functional layer 300 includes the organic electroluminescent material provided in the present application .
- the photoelectric conversion device may include an anode 100, a hole transport layer 320, a photoelectric conversion layer 360, an electron transport layer 340 and a cathode 200 which are stacked in sequence.
- the photoelectric conversion device may be a solar cell, especially an organic thin film solar cell.
- a solar cell may include an anode, a hole transport layer, an organic light-emitting layer, an electron transport layer, and a cathode that are stacked in sequence, wherein the hole transport layer includes the present invention.
- the applied organic electroluminescent material may be any organic electroluminescent material.
- a third aspect of the present application provides an electronic device, including the electronic component provided in the second aspect of the present application.
- the electronic device is a first electronic device 400 , which includes the above-mentioned organic electroluminescent device.
- the first electronic device 400 may be, for example, a display device, a lighting device, an optical communication device, or other types of electronic devices, such as but not limited to computer screens, mobile phone screens, televisions, electronic paper, emergency lighting, light modules, and the like.
- the electronic device is a second electronic device 500 including the above-mentioned photoelectric conversion device.
- the second electronic device 500 may be, for example, a solar power generation device, a light detector, a fingerprint identification device, an optical module, a CCD camera, or other types of electronic devices.
- the compounds of the synthetic methods not mentioned in this application are all raw materials obtained through commercial channels.
- IM x-1 listed in table 1 is synthesized with reference to the method for IM a-1, the difference is that raw material 1 is used to replace phenylboronic acid, and wherein, the main raw material used, the synthetic intermediate and the yield thereof are as shown in table 1 .
- the anode is prepared by the following process: the thickness is
- the ITO substrate was cut into a size of 40mm (length) ⁇ 40mm (width) ⁇ 0.7mm (thickness), and a photolithography process was used to prepare it into an experimental substrate with cathode, anode and insulating layer patterns, and use ultraviolet ozone and O 2 :N 2 plasma is used for surface treatment to increase the work function of the anode (experimental substrate), and the substrate surface is cleaned with organic solvent to remove impurities and oil stains on the substrate surface.
- HAT-CN was vacuum evaporated on the experimental substrate (anode) to form a thickness of of hole injection layer (HIL), and then vacuum-evaporated NPB on the hole injection layer to form a thickness of the first hole transport layer.
- HIL hole injection layer
- the compound RH-1: Ir(dmpq) 2 (acac) was co-evaporated at a weight ratio of 95%: 5% to form a thickness of The red emissive layer (EML).
- Compound HB-1 was vacuum evaporated on the red light-emitting layer to form a thickness of the hole blocking layer. Then on the hole blocking layer, compound ET-1 and LiQ were mixed in a weight ratio of 1:1 and evaporated to form Thick electron transport layer (ETL), Yb was evaporated on the electron transport layer to form a thickness of The electron injection layer (EIL) of the the cathode.
- ET-1 Thick electron transport layer
- ETL Thick electron transport layer
- EIL electron injection layer
- the thickness of vacuum evaporation on the above-mentioned cathode is The CP-1 is formed to form an organic capping layer (CPL), thereby completing the fabrication of an organic electroluminescent device.
- CPL organic capping layer
- An organic electroluminescent device was prepared in the same manner as in Example 1, except that the compounds in Table 5 were respectively used in place of Compound 1 used in Example 1 when forming the second hole transport layer.
- An organic electroluminescence device was prepared in the same manner as in Example 1, except that Compound A, Compound B, and Compound C were used instead of Compound 1 used in Example 1 when forming the second hole transport layer.
- the performance of the red organic electroluminescent devices prepared in Examples 1 to 52 and Comparative Examples 1 to 3 was tested. Specifically, the IVL performance of the devices was tested under the condition of 10mA/cm 2. The life of T95 device was 20mA/cm 2 . The test was carried out under the conditions, and the test results are shown in Table 5.
- Examples 1 to 52 the compounds described in the present invention are used as the material of the second hole transport layer, and the prepared red organic electroluminescent devices have the characteristics of high efficiency and long life. Specifically, compared with Comparative Examples 1 to 3, the luminous efficiency of Examples 1 to 52 is increased by at least 13.7%, the external quantum efficiency is increased by at least 12.2%, and the lifetime is increased by at least 12.3%.
- the anode is prepared by the following process: the thickness is The ITO substrate was cut into a size of 40mm (length) ⁇ 40mm (width) ⁇ 0.7mm (thickness), and a photolithography process was used to prepare it into an experimental substrate with patterns of cathodes, anodes and insulating layers, using ultraviolet ozone and O 2 : N2 plasma is used for surface treatment to increase the work function of the anode (experimental substrate), and the surface of the substrate is cleaned with an organic solvent to remove impurities and oil stains on the surface of the substrate.
- HAT-CN was vacuum evaporated on the experimental substrate (anode) to form a thickness of of hole injection layer (HIL), and then vacuum-evaporated NPB on the hole injection layer to form a thickness of the first hole transport layer.
- HIL hole injection layer
- Compound 251 is vacuum evaporated on the first hole transport layer to form a thickness of the second hole transport layer.
- the compound GH-1:Ir(ppy) 3 was co-evaporated at a weight ratio of 95%:5% to form a thickness of The green light emitting layer (EML).
- EML green light emitting layer
- Compound ET-2 and LiQ were mixed at a weight ratio of 1:1 on the light-emitting layer and evaporated to form Thick electron transport layer (ETL), Yb was evaporated on the electron transport layer to form a thickness of The electron injection layer (EIL) of the the cathode.
- ETL Thick electron transport layer
- EIL electron injection layer
- the thickness of vacuum evaporation on the above-mentioned cathode is The CP-1 is formed to form an organic capping layer (CPL), thereby completing the fabrication of an organic electroluminescent device.
- CPL organic capping layer
- An organic electroluminescent device was prepared in the same manner as in Application Example 1, except that the compounds in Table 7 were respectively used instead of Compound 251 used in Application Example 1 when forming the second hole transport layer.
- An organic electroluminescent device was prepared in the same manner as in Application Example 1, except that Compound A, Compound B, Compound D, and Compound E were used instead of Compound 251 used in Application Example 1 when forming the second hole transport layer. .
- the green organic electroluminescent devices prepared in Application Examples 1 to 17 and Comparative Examples 4 to 7 were tested for performance. Specifically, the performance of the devices was tested under the condition of 10 mA/cm 2 . The test results are shown in Table 7.
- Application Examples 1 to 17 the compounds of the present invention are used as the material of the second hole transport layer, and the prepared green organic electroluminescent devices have the characteristics of high efficiency and long life. Specifically, compared with Comparative Examples 4 to 7, Application Examples 1 to 17 have at least 12.5% improvement in luminous efficiency, at least 17.6% improvement in external quantum efficiency, and at least 11.7% improvement in lifetime.
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Abstract
Description
Claims (18)
- 一种有机电致发光材料,其具有如式Ⅰ表示的结构:其中,Ar 1和Ar 2相同或不同,且各自独立地选自碳原子数为6~40的取代或未取代的芳基、碳原子数为3~30的取代或未取代的杂芳基;L 1和L 2相同或不同,且各自独立选自单键、碳原子数为6~30的取代或未取代的亚芳基、碳原子数为6~30的取代或未取代的亚杂芳基;Ar 3和Ar 4相同或不同,且各自独立地选自碳原子数为6~30的取代或未取代的芳基、碳原子数为3~30的取代或未取代的杂芳基,且Ar 3和Ar 4中至少一个选自 其中,X选自C(R 3R 4)、O、S;R 3和R 4相同或不同,且各自独立地选自碳原子数为1~5的烷基、碳原子数为6~12的芳基、碳原子数为3~12的杂芳基;或者,R 3和R 4形成饱和或不饱和的5~13元环;R 1和R 2相同或不同,且各自独立地选自氘、卤素基团、氰基、碳原子数为1~5的烷基、碳原子数为3~12的三烷基硅基、碳原子数为6~12的芳基、碳原子数为3~12的杂芳基;R 1、R 2以R i表示,n 1和n 2以n i表示,n i表示R i的个数,i为变量,表示1和2,当i为1和2时,n i选自0、1、2、3或4;且当n i大于1时,任意两个R i相同或不同;任选地,任意两个相邻的R i相互连接形成不饱和的6~10元环;Ar 1、Ar 2、L 1、L 2、Ar 3和Ar 4中的取代基相同或不同,且各自独立地选自氘、卤素基团、氰基、碳原子数为3~12的三烷基硅基、三苯基硅基、碳原子数为1~10的烷基、碳原子数为6~20的芳基、碳原子数为3~20的杂芳基、碳原子数为3~10的环烷基;任选地,Ar 1和Ar 2中的任意两个相邻的取代基形成取代或未取代的3~15元环,所述3~15元环中的取代基独立地选自氘、卤素基团、氰基、碳原子数为3~6的三烷基硅基、三苯基硅基、碳原子数为1~5的烷基。
- 根据权利要求1所述的有机电致发光材料,其中,Ar 1和Ar 2各自独立地选自碳原子数为6~33的取代或未取代的芳基、碳原子数为5~18的取代或未取代的杂芳基;优选地,Ar 1和Ar 2中的取代基各自独立地选自氘、氟、氰基、三甲基硅基、三苯基硅基、碳原子数为1~5的烷基、碳原子数为6~12的芳基、碳原子数为5~12的杂芳基、碳原子数为5~10的环烷基;任选地,Ar 1和Ar 2中的任意两个相邻的取代基形成取代或未取代的5~13元环,所述5~13元环中的取代基各自独立地选自氘、氟、氰基、三甲基硅基、三苯基硅基、甲基、乙基、异丙基、叔丁基。
- 根据权利要求1所述的有机电致发光材料,其中,Ar 1和Ar 2各自独立地选自取代或未取代的苯基、取代或未取代的萘基、取代或未取代的联苯基、取代或未取代的芴基、取代或未取代的二 苯并呋喃基、取代或未取代的二苯并噻吩基、取代或未取代的咔唑基、取代或未取代的菲基、取代或未取代的三亚苯基、取代或未取代的芘基、取代或未取代的蒽基;优选地,Ar 1和Ar 2中的取代基各自独立地选自氘、氟、氰基、三甲基硅基、三苯基硅基、甲基、乙基、异丙基、叔丁基、环戊基、环己基、金刚烷基、吡啶基、苯基、萘基、联苯基;任选地,Ar 1和Ar 2中的任意两个相邻的取代基形成金刚烷、环戊烷、环己烷、芴环或叔丁基取代的芴环。
- 根据权利要求1所述的有机电致发光材料,其中,L 1和L 2各自独立地选自单键、碳原子数为6~20的取代或未取代的亚芳基;优选地,L 1和L 2中的取代基各自独立地选自氘、氟、氰基、碳原子数为1~5的烷基、碳原子数为6~12的芳基、三甲基硅基。
- 根据权利要求1所述的有机电致发光材料,其中,L 1和L 2各自独立地选自单键、碳原子数为6~12的取代或未取代的亚芳基;优选地,L 1和L 2中的取代基各自独立地选自氘、氟、氰基、甲基、乙基、异丙基、叔丁基、苯基、三甲基硅基。
- 根据权利要求1所述的有机电致发光材料,其中,L 1和L 2各自独立地选自单键、取代或未取代的亚苯基、取代或未取代的亚萘基、取代或未取代的亚联苯基;优选地,L 1和L 2中的取代基各自独立地选自氘、氟、氰基、甲基、乙基、异丙基、叔丁基、苯基、三甲基硅基。
- 根据权利要求1所述的有机电致发光材料,其中,R 3和R 4各自独立地选自甲基、乙基、异丙基、叔丁基、苯基、萘基、联苯基、吡啶基、嘧啶基、喹啉基、异喹啉基、二苯并呋喃基、二苯并噻吩基、咔唑基;或者,R 3和R 4形成环戊烷、环己烷、芴环。
- 根据权利要求1所述的有机电致发光材料,其中,R 1和R 2各自独立地选自氘、氟、氰基、甲基、乙基、异丙基、叔丁基、三甲基硅基、苯基、萘基、联苯基、吡啶基、嘧啶基、喹啉基、异喹啉基、二苯并呋喃基、二苯并噻吩基、咔唑基。
- 一种电子元件,包括相对设置的阳极和阴极,以及设于所述阳极和所述阴极之间的功能层;所述功能层包含权利要求1~15任一项所述的有机电致发光材料。
- 根据权利要求16所述的电子元件,其中,所述功能层包括空穴传输层,所述空穴传输层包含所述有机电致发光材料;优选地,所述电子元件为有机电致发光器件或光电转换器件;更优选地,所述电子元件为有机电致发光器件,所述空穴传输层包括第一空穴传输层和第二空穴传输层,所述第一空穴传输层相对所述第二空穴传输层更靠近所述阳极,其中,所述第二空穴传输层包含所述的有机电致发光材料。
- 一种电子装置,包括权利要求16或17所述的电子元件。
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CN115028540B (zh) | 2023-10-10 |
CN113501800B (zh) | 2022-06-24 |
CN115028540A (zh) | 2022-09-09 |
JP2023531932A (ja) | 2023-07-26 |
US20240023428A1 (en) | 2024-01-18 |
KR20220169948A (ko) | 2022-12-28 |
CN113501800A (zh) | 2021-10-15 |
EP4155298A1 (en) | 2023-03-29 |
EP4155298A4 (en) | 2023-11-29 |
JP7410599B2 (ja) | 2024-01-10 |
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