WO2019085758A1 - 一种含有酮的化合物及其在有机电致发光器件上的应用 - Google Patents

一种含有酮的化合物及其在有机电致发光器件上的应用 Download PDF

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WO2019085758A1
WO2019085758A1 PCT/CN2018/110692 CN2018110692W WO2019085758A1 WO 2019085758 A1 WO2019085758 A1 WO 2019085758A1 CN 2018110692 W CN2018110692 W CN 2018110692W WO 2019085758 A1 WO2019085758 A1 WO 2019085758A1
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compound
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陈海峰
李崇
张兆超
张小庆
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江苏三月光电科技有限公司
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    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C45/00—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds
    • C07C45/61—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups
    • C07C45/67—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton
    • C07C45/68—Preparation of compounds having >C = O groups bound only to carbon or hydrogen atoms; Preparation of chelates of such compounds by reactions not involving the formation of >C = O groups by isomerisation; by change of size of the carbon skeleton by increase in the number of carbon atoms
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    • C07C49/587—Unsaturated compounds containing a keto groups being part of a ring
    • C07C49/753—Unsaturated compounds containing a keto groups being part of a ring containing ether groups, groups, groups, or groups
    • C07C49/755—Unsaturated compounds containing a keto groups being part of a ring containing ether groups, groups, groups, or groups a keto group being part of a condensed ring system with two or three rings, at least one ring being a six-membered aromatic ring
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    • C07D311/78—Ring systems having three or more relevant rings
    • C07D311/80—Dibenzopyrans; Hydrogenated dibenzopyrans
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    • C07D335/00—Heterocyclic compounds containing six-membered rings having one sulfur atom as the only ring hetero atom
    • C07D335/04—Heterocyclic compounds containing six-membered rings having one sulfur atom as the only ring hetero atom condensed with carbocyclic rings or ring systems
    • C07D335/10—Dibenzothiopyrans; Hydrogenated dibenzothiopyrans
    • C07D335/12—Thioxanthenes
    • C07D335/14—Thioxanthenes with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached in position 9
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    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D407/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having oxygen atoms as the only ring hetero atoms, not provided for by group C07D405/00
    • C07D407/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having oxygen atoms as the only ring hetero atoms, not provided for by group C07D405/00 containing two hetero rings
    • C07D407/06—Heterocyclic compounds containing two or more hetero rings, at least one ring having oxygen atoms as the only ring hetero atoms, not provided for by group C07D405/00 containing two hetero rings linked by a carbon chain containing only aliphatic carbon atoms
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    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D407/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having oxygen atoms as the only ring hetero atoms, not provided for by group C07D405/00
    • C07D407/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having oxygen atoms as the only ring hetero atoms, not provided for by group C07D405/00 containing two hetero rings
    • C07D407/10—Heterocyclic compounds containing two or more hetero rings, at least one ring having oxygen atoms as the only ring hetero atoms, not provided for by group C07D405/00 containing two hetero rings linked by a carbon chain containing aromatic rings
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    • C07D409/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms
    • C07D409/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings
    • C07D409/04—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings directly linked by a ring-member-to-ring-member bond
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    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D409/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms
    • C07D409/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings
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    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D409/00—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms
    • C07D409/02—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings
    • C07D409/10—Heterocyclic compounds containing two or more hetero rings, at least one ring having sulfur atoms as the only ring hetero atoms containing two hetero rings linked by a carbon chain containing aromatic rings
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    • C09K11/00—Luminescent, e.g. electroluminescent, chemiluminescent materials
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    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
    • H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers

Definitions

  • the present invention relates to the field of semiconductor technology, and more particularly to a ketone-containing compound and its use in an organic electroluminescent device.
  • OLED Organic Light Emission Diodes
  • the OLED light-emitting device is like a sandwich structure, including an electrode material film layer and an organic functional material sandwiched between different electrode film layers, and various functional materials are superposed on each other according to the purpose to form an OLED light-emitting device.
  • OLED display technology has been applied in the fields of smart phones, tablet computers, etc., and will further expand to large-size applications such as televisions.
  • OLED devices have luminous efficiency and service life. Further improvement is needed.
  • Research on improving the performance of OLED light-emitting devices includes: reducing the driving voltage of the device, improving the luminous efficiency of the device, and improving the service life of the device.
  • OLED photoelectric functional materials applied to OLED devices can be divided into two categories, namely, charge injection transport materials and luminescent materials, and further, charge injection transport materials can be divided into electron injection transport materials, electron blocking materials, and holes. The transport material and the hole blocking material are injected, and the luminescent material can also be divided into a host luminescent material and a dopant material.
  • various organic functional materials are required to have good photoelectric characteristics. For example, as a charge transport material, it is required to have good carrier mobility, high glass transition temperature, etc., as a main body of the light-emitting layer. Materials require materials with good bipolarity, appropriate HOMO/LUMO energy levels, and the like.
  • the OLED photoelectric functional material film layer constituting the OLED device includes at least two or more layers, and the industrially applied OLED device structure includes a hole injection layer, a hole transport layer, an electron blocking layer, a light emitting layer, a hole blocking layer, and an electron.
  • a plurality of film layers such as a transport layer and an electron injection layer, that is, an optoelectronic functional material applied to an OLED device includes at least a hole injecting material, a hole transporting material, a luminescent material, an electron transporting material, etc., and the material type and the collocation form are rich. Characteristics of sex and diversity.
  • the optoelectronic functional materials used have strong selectivity, and the performance of the same materials in different structural devices may be completely different. Therefore, in view of the industrial application requirements of current OLED devices, and the different functional film layers of OLED devices, the photoelectric characteristics of the devices must be selected to be more suitable, and high-performance OLED functional materials or material combinations can achieve high efficiency and long device. Comprehensive characteristics of life and low voltage. As far as the actual demand of the current OLED display lighting industry is concerned, the development of OLED materials is still far from enough. It is lagging behind the requirements of panel manufacturers, and it is especially important to develop higher performance organic functional materials as material enterprises.
  • the Applicant has provided a ketone containing compound and its use in an organic electroluminescent device.
  • the compound of the invention contains a ketone structure, has high glass transition temperature and molecular thermal stability, suitable HOMO and LUMO energy levels, high electron mobility, and can effectively improve the luminous efficiency of the device and the OLED after being applied to the OLED device. The life of the device.
  • Ar 2 is represented by a substituted or unsubstituted C 1-10 alkyl group, a substituted or unsubstituted C 6-30 aryl group, a substituted or unsubstituted C 5-30 hetero group.
  • aryl groups One of the aryl groups;
  • Ar 1 and Ar 3 are each independently represented by a single bond, a substituted or unsubstituted C 6-30 arylene group, a substituted or unsubstituted C 5-30 heteroarylene group.
  • Ar 1 may also be represented by a substituted or unsubstituted C 1-10 alkyl group, a substituted or unsubstituted C 6-30 aryl group, a substituted or unsubstituted C 5-30 One of the heteroaryl groups;
  • X is represented by a carbon atom, an oxygen atom or a sulfur atom
  • X 1 and X 2 are each independently represented by a single bond, an oxygen atom, a C 1-10 linear or branched alkyl-substituted alkylene group, an aryl-substituted alkylene group, or an alkyl group. a substituted imido or aryl substituted imine group; at least one of X 1 and X 2 is a single bond.
  • the present invention can also be improved as follows.
  • Ar 1 and Ar 3 are each independently represented as one of a single bond, a phenylene group, a biphenylylene group or a naphthylene group; and Ar 1 may also be represented as a methyl group, a phenyl group, a biphenyl group or One of naphthyl groups;
  • Ar 2 is represented by one of a methyl group, a phenyl group, a biphenyl group or a naphthyl group.
  • the invention also provides a preparation method of the compound as described above, wherein the reaction equation occurring during the preparation is:
  • the raw material A and the intermediate M are dissolved in a mixed solution of toluene and ethanol, and after deoxidation, Pd(PPh 3 ) 4 and K 2 CO 3 are added , and the reaction is carried out at 95 to 110 ° C for 10 to 24 hours in an inert atmosphere; After the reaction is completed, the mixture is cooled and filtered, and the filtrate is evaporated to remove the solvent, and the crude product is passed through a silica gel column to obtain the target compound;
  • the amount of the toluene and the ethanol is 30 to 50 mL of toluene and 5 to 10 mL of ethanol per gram of the raw material A, and the molar ratio of the intermediate M to the raw material A is (1 to 1.5): 1, Pd(PPh 3 ) 4
  • the molar ratio to the raw material A is (0.006 to 0.02): 1, the molar ratio of K 2 CO 3 to the raw material A is (1.5 to 2): 1;
  • the raw material A is weighed and dissolved in tetrahydrofuran, and the raw material B and tetrakis(triphenylphosphine)palladium are added, the mixture is stirred, and then the aqueous solution of potassium carbonate is added, and the mixed solution of the above reactants is reacted at a reaction temperature of 70-90.
  • the mixture was heated to reflux for 5-20 hours at ° C. After the reaction was completed, water was added, and the mixture was evaporated to dichloromethane.
  • the molar ratio of the raw material A to the raw material B is 1: (1.0 to 1.5), and the molar ratio of tetrakis(triphenylphosphine)palladium to the raw material A is (0.001 to 0.02): 1, potassium carbonate and the raw material A
  • the molar ratio is (1.0 to 2.0): 1, and the ratio of the amount of THF to the raw material A is 1 g: (10 to 30) ml.
  • the raw material A and the intermediate N are dissolved in a mixed solution of toluene and ethanol, and after deoxidation, Pd(PPh 3 ) 4 and K 2 CO 3 are added , and the reaction is carried out at 95 to 110 ° C for 10 to 24 hours in an inert atmosphere; After the reaction is completed, the mixture is cooled and filtered, and the filtrate is evaporated to remove the solvent, and the crude product is passed through a silica gel column to obtain the target compound;
  • the amount of the toluene and the ethanol is 30 to 50 mL of toluene and 5 to 10 mL of ethanol per gram of the raw material A, and the molar ratio of the intermediate N to the raw material A is (1 to 1.5): 1, Pd(PPh 3 ) 4
  • the molar ratio to the raw material A is (0.006 to 0.02): 1, the molar ratio of K 2 CO 3 to the raw material A is (1.5 to 2): 1;
  • the raw material A is weighed and dissolved in tetrahydrofuran, and the raw material C and tetrakis(triphenylphosphine)palladium are added, the mixture is stirred, and then the aqueous solution of potassium carbonate is added, and the mixed solution of the above reactants is reacted at a reaction temperature of 70-90.
  • the mixture was heated to reflux for 5-20 hours at ° C. After the reaction was completed, water was added, and the mixture was evaporated.
  • the molar ratio of the raw material A to the raw material C is 1: (1.0 to 1.5), and the molar ratio of tetrakis(triphenylphosphine)palladium to the raw material A is (0.001 to 0.02): 1, potassium carbonate and the raw material A
  • the molar ratio is (1.0 ⁇ 2.0): 1, the ratio of THF to the raw material A is 1g: (10 ⁇ 30) ml;
  • the raw material A is weighed and dissolved in tetrahydrofuran, and the raw material D and tetrakis(triphenylphosphine)palladium are added, the mixture is stirred, and then the aqueous potassium carbonate solution is added, and the mixed solution of the above reactants is reacted at a reaction temperature of 70-90.
  • the mixture was heated to reflux for 5-20 hours at ° C. After the reaction was completed, water was added, and the mixture was evaporated.
  • the molar ratio of the raw material A to the raw material D is 1:1.0 to 1.5
  • the molar ratio of tetrakis(triphenylphosphine)palladium to the raw material A is 0.001 to 0.02:1
  • the molar ratio of potassium carbonate to the raw material A is 1.0 to 2.0. :1
  • the ratio of the amount of the raw material A to the THF is 1 g: 10 to 30 ml.
  • the present invention also provides an organic electroluminescent device comprising at least one functional layer containing the above ketone-containing compound.
  • the present invention can also be improved as follows.
  • the organic electroluminescent device includes a light-emitting layer containing the above-described ketone-containing compound.
  • the organic electroluminescent device includes a hole blocking layer/electron transport layer containing the above ketone-containing compound.
  • the invention also provides an illumination or display element comprising an organic electroluminescent device as described above.
  • the compound of the present invention has a ketone and a spiro group as a skeleton, and is bonded through a single bond or an aromatic group.
  • the ketone and spiro group are all electronic groups, and have a deep HOMO level and a high electron mobility.
  • the HOMO level can be freely adjusted by modification of other aromatic groups, and can be used as an electron type luminescent material or as a hole blocking or electron transport layer material.
  • the structure containing a hole group of the present invention balances electrons and holes of the material, so that the material can be used as a host material of the electron-emitting type light-emitting layer.
  • both the ketone and the spiro group are electron-withdrawing groups, and the molecules formed have no symmetry, and the aggregation between molecules is avoided.
  • the compound of the present invention has strong rigidity, is incapable of crystallizing between molecules, and is not easy to aggregate. It has good film forming properties and high glass transition temperature and thermal stability. Therefore, when the compound of the present invention is applied to an OLED device, the film stability after film formation can be maintained, and the service life of the OLED device can be improved.
  • the compound of the invention is applied as an organic electroluminescent functional layer material to an OLED device, the current efficiency, power efficiency and external quantum efficiency of the device are greatly improved; at the same time, the device lifetime is greatly improved, in the OLED light-emitting device. It has good application effect and has good industrialization prospects.
  • FIG. 1 is a schematic structural view of a material exemplified in the present invention applied to an OLED device;
  • 1 is a transparent substrate layer
  • 2 is an ITO anode layer
  • 3 is a hole injection layer
  • 4 is a hole transport or electron blocking layer
  • 5 is a light emitting layer
  • 6 is an electron transport or hole blocking layer
  • 7 is an electron injection layer.
  • Layer, 8 is a cathode reflective electrode layer.
  • Figure 2 shows the current efficiency as a function of temperature.
  • the amount of the toluene and the ethanol is 30 to 50 mL of toluene and 5 to 10 mL of ethanol per gram of the raw material E
  • the molar ratio of the raw material B to the raw material E is (1 to 1.5): 1
  • Pd(PPh 3 ) 4 and The molar ratio of the raw material E was (0.006 to 0.02): 1
  • the molar ratio of K 2 CO 3 to the raw material E was (1.5 to 2): 1.
  • the molar ratio of the intermediate S to n-butyllithium is 1: (1 to 1.5); and the molar ratio of the intermediate S to triisopropyl borate is 1: (1 to 1.5).
  • the intermediate M was prepared by the synthesis method of the intermediate M-1, and the specific structure is shown in Table 1.
  • Elemental analysis structure (Molecular Formula C 44 H 26 O 3 ): Theory C, 87.69; H, 4.35; ???: C, 87.68; H, 4.35; ESI-MS (m/z) (M+): 602.19, measured value is 602.77.
  • Compound 231 was prepared in the same manner as in Example 2 except that the starting material A-1 was replaced with the starting material A-6 and the intermediate M-1 was replaced with the intermediate M-18. Elemental Analysis Structure (Molecular Formula C 53 H 36 O 2 ): Theory C, 90.31; H, 5.15; Test: C, 90.30; H, 5.15. ESI-MS (m/z) (M + ): calc. 704.
  • the organic compound is used in a light-emitting device, has a high Tg (glass transition temperature) temperature and a triplet level (T1), and a suitable HOMO, LUMO energy level can be used as a hole blocking/electron transport material, or as a The luminescent layer material is used.
  • Tg glass transition temperature
  • T1 triplet level
  • HOMO HOMO
  • LUMO energy level can be used as a hole blocking/electron transport material, or as a The luminescent layer material is used.
  • the thermal performance, T1 energy level and HOMO energy level test were carried out on the compound of the present invention and the existing materials, and the results are shown in Table 2.
  • the triplet energy level T1 is tested by Hitachi's F4600 fluorescence spectrometer.
  • the test conditions of the material are 2*10 -5 toluene solution;
  • the glass transition temperature Tg is by differential scanning calorimetry (DSC, Germany Benz DSC204F1 differential scanning) The calorimeter was measured at a heating rate of 10 ° C/min;
  • the thermogravimetric temperature Td was a temperature at which the weight loss was 1% in a nitrogen atmosphere, and was measured on a TGA-50H thermogravimetric analyzer of Shimadzu Corporation, Japan, and the flow rate of nitrogen was 20 mL/ Min;
  • the highest occupied molecular orbital HOMO level is tested by the ionization energy test system (IPS3) and tested as the atmospheric environment.
  • IPS3 ionization energy test system
  • the organic compound of the invention has high glass transition temperature, can improve the phase stability of the material film, further improve the service life of the device, and has a high triplet energy level, compared with the currently applied CBP and TPBi materials.
  • the energy loss of the luminescent layer can be blocked, thereby improving the luminous efficiency of the device.
  • the materials of the invention and the materials of application have similar HOMO levels. Therefore, the ketone-containing organic material can effectively improve the luminous efficiency and the service life of the device after being applied to different functional layers of the OLED device.
  • the device examples 1 to 23 and the device comparative example 1 have the same fabrication process, and the same substrate material and electrode material are used, and the film thickness of the electrode material is also maintained. Consistently, the difference between the device embodiments 2 and 15 is that the material of the light-emitting layer in the device is changed; the device embodiments 16 to 23 change the material of the hole blocking/electron transport layer of the device, and the device obtained by each embodiment
  • the performance test results are shown in Table 3.
  • an electroluminescent device is prepared by: a) cleaning an ITO anode layer 2 on a transparent substrate layer 1 and ultrasonically cleaning each with deionized water, acetone, and ethanol for 15 minutes, respectively, and then plasma.
  • the body cleaner is treated for 2 minutes; b) on the ITO anode layer 2, the hole injection layer material HAT-CN is deposited by vacuum evaporation, the thickness is 10 nm, this layer serves as the hole injection layer 3; c) is empty On the hole injecting layer 3, a hole transporting material NPB is deposited by vacuum evaporation to a thickness of 80 nm, the layer is a hole transporting layer/electron blocking layer 4; d) is steamed on the hole transporting/electron blocking layer 4
  • the luminescent layer 5 is coated with the host material as the compound 10 and the compound GH prepared in the embodiment of the invention, the doping material is Ir(ppy) 3 , and the mass ratio of the compound 10, GH and Ir(ppy) 3 is 50:50: 10, the thickness is 30 nm; e) on the light-emitting layer 5, the electron transport material TPBI is evaporated by vacuum evaporation to a thickness of 40 nm, and the organic material is used as the
  • ITO anode layer 2 (thickness: 150 nm) / hole injection layer 3 (thickness: 10 nm, material: HAT-CN) / hole transport layer 4 (thickness: 80 nm, material: NPB) / light-emitting layer 5 (Thickness: 40 nm, material: compound 19 prepared by the present invention, GH and Ir(ppy) 3 are mixed by weight ratio of 50:50:10)/hole blocking/electron transport layer 6 (thickness: 35 nm, material) : TPBI) / electron injection layer 7 (thickness: 1 nm, material: LiF) / Al (thickness: 100 nm).
  • ITO anode layer 2 (thickness: 150 nm) / hole injection layer 3 (thickness: 10 nm, material: HAT-CN) / hole transport layer 4 (thickness: 80 nm, material: NPB) / light-emitting layer 5 (Thickness: 40 nm, material: compound 28 prepared by the present invention, GH and Ir(ppy) 3 are mixed by weight ratio of 50:50:10)/hole blocking/electron transport layer 6 (thickness: 35 nm, material) : TPBI) / electron injection layer 7 (thickness: 1 nm, material: LiF) / Al (thickness: 100 nm).
  • ITO anode layer 2 (thickness: 150 nm) / hole injection layer 3 (thickness: 10 nm, material: HAT-CN) / hole transport layer 4 (thickness: 80 nm, material: NPB) / luminescent layer 5 (Thickness: 40 nm, material: compound 50, GH, and Ir(ppy) 3 prepared in the examples of the present invention are mixed by weight ratio of 50:50:10)/hole blocking/electron transport layer 6 (thickness: 35 nm, material) : TPBI) / electron injection layer 7 (thickness: 1 nm, material: LiF) / Al (thickness: 100 nm).
  • ITO anode layer 2 (thickness: 150 nm) / hole injection layer 3 (thickness: 10 nm, material: HAT-CN) / hole transport layer 4 (thickness: 80 nm, material: NPB) / light-emitting layer 5 (Thickness: 40 nm, material: compound 61, GH and Ir(ppy) 3 prepared in the examples of the present invention are mixed by weight ratio of 50:50:10)/hole blocking/electron transport layer 6 (thickness: 35 nm, material) : TPBI) / electron injection layer 7 (thickness: 1 nm, material: LiF) / Al (thickness: 100 nm).
  • ITO anode layer 2 (thickness: 150 nm) / hole injection layer 3 (thickness: 10 nm, material: HAT-CN) / hole transport layer 4 (thickness: 80 nm, material: NPB) / light-emitting layer 5 (Thickness: 40 nm, material: compound 69 prepared by the present invention, GH and Ir(ppy) 3 are mixed by weight ratio of 50:50:10)/hole blocking/electron transport layer 6 (thickness: 35 nm, material) : TPBI) / electron injection layer 7 (thickness: 1 nm, material: LiF) / Al (thickness: 100 nm).
  • ITO anode layer 2 (thickness: 150 nm) / hole injection layer 3 (thickness: 10 nm, material: HAT-CN) / hole transport layer 4 (thickness: 80 nm, material: NPB) / light-emitting layer 5 (Thickness: 40 nm, material: compound 73 prepared by the present invention, GH and Ir(ppy) 3 are mixed by weight ratio of 50:50:10)/hole blocking/electron transport layer 6 (thickness: 35 nm, material) : TPBI) / electron injection layer 7 (thickness: 1 nm, material: LiF) / Al (thickness: 100 nm).
  • ITO anode layer 2 (thickness: 150 nm) / hole injection layer 3 (thickness: 10 nm, material: HAT-CN) / hole transport layer 4 (thickness: 80 nm, material: NPB) / light-emitting layer 5 (Thickness: 40 nm, material: compound 96, GH and Ir(ppy) 3 prepared in the examples of the present invention are mixed by weight ratio of 50:50:10)/hole blocking/electron transport layer 6 (thickness: 35 nm, material) : TPBI) / electron injection layer 7 (thickness: 1 nm, material: LiF) / Al (thickness: 100 nm).
  • ITO anode layer 2 (thickness: 150 nm) / hole injection layer 3 (thickness: 10 nm, material: HAT-CN) / hole transport layer 4 (thickness: 80 nm, material: NPB) / light-emitting layer 5 (Thickness: 40 nm, material: compound 115, GH, and Ir(ppy) 3 prepared in the examples of the present invention are mixed by weight ratio of 50:50:10)/hole blocking/electron transport layer 6 (thickness: 35 nm, material) : TPBI) / electron injection layer 7 (thickness: 1 nm, material: LiF) / Al (thickness: 100 nm).
  • ITO anode layer 2 (thickness: 150 nm) / hole injection layer 3 (thickness: 10 nm, material: HAT-CN) / hole transport layer 4 (thickness: 80 nm, material: NPB) / light-emitting layer 5 (Thickness: 40 nm, material: compound 144, GH and Ir(ppy) 3 prepared in the examples of the present invention are mixed by weight ratio of 50:50:10)/hole blocking/electron transport layer 6 (thickness: 35 nm, material) : TPBI) / electron injection layer 7 (thickness: 1 nm, material: LiF) / Al (thickness: 100 nm).
  • ITO anode layer 2 (thickness: 150 nm) / hole injection layer 3 (thickness: 10 nm, material: HAT-CN) / hole transport layer 4 (thickness: 80 nm, material: NPB) / light-emitting layer 5 (Thickness: 40 nm, material: compound 163, GH and Ir(ppy) 3 prepared in the examples of the present invention are mixed by weight ratio of 50:50:10)/hole blocking/electron transport layer 6 (thickness: 35 nm, material) : TPBI) / electron injection layer 7 (thickness: 1 nm, material: LiF) / Al (thickness: 100 nm).
  • ITO anode layer 2 (thickness: 150 nm) / hole injection layer 3 (thickness: 10 nm, material: HAT-CN) / hole transport layer 4 (thickness: 80 nm, material: NPB) / light-emitting layer 5 (Thickness: 40 nm, material: compound 177, GH and Ir(ppy) 3 prepared in the examples of the present invention are mixed by weight ratio of 50:50:10)/hole blocking/electron transport layer 6 (thickness: 35 nm, material) : TPBI) / electron injection layer 7 (thickness: 1 nm, material: LiF) / Al (thickness: 100 nm).
  • ITO anode layer 2 (thickness: 150 nm) / hole injection layer 3 (thickness: 10 nm, material: HAT-CN) / hole transport layer 4 (thickness: 80 nm, material: NPB) / luminescent layer 5 (Thickness: 40 nm, material: compound 196, GH and Ir(ppy) 3 prepared in the examples of the present invention are mixed by weight ratio of 50:50:10)/hole blocking/electron transport layer 6 (thickness: 35 nm, material) : TPBI) / electron injection layer 7 (thickness: 1 nm, material: LiF) / Al (thickness: 100 nm).
  • ITO anode layer 2 (thickness: 150 nm) / hole injection layer 3 (thickness: 10 nm, material: HAT-CN) / hole transport layer 4 (thickness: 80 nm, material: NPB) / light-emitting layer 5 (Thickness: 40 nm, material: compound 231, GH and Ir(ppy) 3 prepared in the examples of the present invention are mixed by weight ratio of 50:50:10)/hole blocking/electron transport layer 6 (thickness: 35 nm, material) : TPBI) / electron injection layer 7 (thickness: 1 nm, material: LiF) / Al (thickness: 100 nm).
  • ITO anode layer 2 (thickness: 150 nm) / hole injection layer 3 (thickness: 10 nm, material: HAT-CN) / hole transport layer 4 (thickness: 80 nm, material: NPB) / light-emitting layer 5 (Thickness: 40 nm, material: compound 261, GH and Ir(ppy) 3 prepared in the examples of the present invention are mixed by weight ratio of 50:50:10)/hole blocking/electron transport layer 6 (thickness: 35 nm, material) : TPBI) / electron injection layer 7 (thickness: 1 nm, material: LiF) / Al (thickness: 100 nm).
  • ITO anode layer 2 (thickness: 150 nm) / hole injection layer 3 (thickness: 10 nm, material: HAT-CN) / hole transport layer 4 (thickness: 80 nm, material: NPB) / light-emitting layer 5 (thickness: 40 nm, material: CBP and Ir(ppy) 3 are mixed by weight ratio of 90:10) / hole blocking/electron transport layer 6 (thickness: 35 nm, material: compound 3 prepared in the examples of the present invention) / Electron injection layer 7 (thickness: 1 nm, material: LiF) / Al (thickness: 100 nm).
  • ITO anode layer 2 (thickness: 150 nm) / hole injection layer 3 (thickness: 10 nm, material: HAT-CN) / hole transport layer 4 (thickness: 80 nm, material: NPB) / light-emitting layer 5 (Thickness: 40 nm, material: CBP and Ir(ppy) 3 are mixed by weight ratio of 90:10) / hole blocking/electron transport layer 6 (thickness: 35 nm, material: compound 20 prepared in the examples of the present invention) / Electron injection layer 7 (thickness: 1 nm, material: LiF) / Al (thickness: 100 nm).
  • ITO anode layer 2 (thickness: 150 nm) / hole injection layer 3 (thickness: 10 nm, material: HAT-CN) / hole transport layer 4 (thickness: 80 nm, material: NPB) / light-emitting layer 5 (Thickness: 40 nm, material: CBP and Ir(ppy) 3 are mixed by weight ratio of 90:10) / hole blocking/electron transport layer 6 (thickness: 35 nm, material: compound 39 prepared in the examples of the present invention) / Electron injection layer 7 (thickness: 1 nm, material: LiF) / Al (thickness: 100 nm).
  • ITO anode layer 2 (thickness: 150 nm) / hole injection layer 3 (thickness: 10 nm, material: HAT-CN) / hole transport layer 4 (thickness: 80 nm, material: NPB) / light-emitting layer 5 (Thickness: 40 nm, material: CBP and Ir(ppy) 3 are mixed by weight ratio of 90:10) / hole blocking/electron transport layer 6 (thickness: 35 nm, material: compound 83 prepared in the examples of the present invention) / Electron injection layer 7 (thickness: 1 nm, material: LiF) / Al (thickness: 100 nm).
  • ITO anode layer 2 (thickness: 150 nm) / hole injection layer 3 (thickness: 10 nm, material: HAT-CN) / hole transport layer 4 (thickness: 80 nm, material: NPB) / light-emitting layer 5 (Thickness: 40 nm, material: CBP and Ir(ppy) 3 are mixed by weight ratio of 90:10) / hole blocking/electron transport layer 6 (thickness: 35 nm, material: compound 128 prepared in the examples of the present invention) / Electron injection layer 7 (thickness: 1 nm, material: LiF) / Al (thickness: 100 nm).
  • ITO anode layer 2 (thickness: 150 nm) / hole injection layer 3 (thickness: 10 nm, material: HAT-CN) / hole transport layer 4 (thickness: 80 nm, material: NPB) / luminescent layer 5 (Thickness: 40 nm, material: CBP and Ir(ppy) 3 are mixed by weight ratio of 90:10) / hole blocking/electron transport layer 6 (thickness: 35 nm, material: compound 155 prepared in the examples of the present invention) / Electron injection layer 7 (thickness: 1 nm, material: LiF) / Al (thickness: 100 nm).
  • ITO anode layer 2 (thickness: 150 nm) / hole injection layer 3 (thickness: 10 nm, material: HAT-CN) / hole transport layer 4 (thickness: 80 nm, material: NPB) / light-emitting layer 5 (Thickness: 40 nm, material: CBP and Ir(ppy) 3 are mixed by weight ratio of 90:10) / hole blocking/electron transport layer 6 (thickness: 35 nm, material: compound 218 prepared in the examples of the present invention) / Electron injection layer 7 (thickness: 1 nm, material: LiF) / Al (thickness: 100 nm).
  • ITO anode layer 2 (thickness: 150 nm) / hole injection layer 3 (thickness: 10 nm, material: HAT-CN) / hole transport layer 4 (thickness: 80 nm, material: NPB) / light-emitting layer 5 (Thickness: 40 nm, material: CBP and Ir(ppy) 3 are mixed by weight ratio of 90:10) / hole blocking/electron transport layer 6 (thickness: 35 nm, material: compound 242 prepared in the examples of the present invention) / Electron injection layer 7 (thickness: 1 nm, material: LiF) / Al (thickness: 100 nm).
  • ITO anode layer 2 (thickness: 150 nm) / hole injection layer 3 (thickness: 10 nm, material: HAT-CN) / hole transport layer 4 (thickness: 80 nm, material: NPB) / light-emitting layer 5 (thickness: 40 nm, material: CBP and Ir(ppy) 3 are mixed by weight ratio of 90:10) / hole blocking/electron transport layer 6 (thickness: 35 nm, material: TPBI) / electron injection layer 7 (thickness: 1 nm, material: LiF) / Al (thickness: 100 nm).
  • the detection data of the obtained electroluminescent device is shown in Table 3.
  • the OLED device prepared by the material of the invention is more stable when operating at a low temperature, and the device examples 4, 12, 21 and the device comparative example 1 are tested in the range of -10 to 80 ° C, and the results are shown in Table 4 and Figure 2 shows.
  • device embodiments 4, 12, and 21 are device structures in which the materials of the present invention and known materials are matched, and compared with the device comparative example 1, not only the low temperature efficiency but also the temperature rise process. In the middle, efficiency has increased steadily.

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Abstract

本发明公开了一种含有酮的化合物及其在有机电致发光器件上的应用，该化合物由酮和螺蒽芴类基团组成，具有深的HOMO能级和高电子迁移率，适合作为空穴阻挡材料或电子传输材料应用；本发明含有空穴基团的结构，可平衡材料的电子和空穴，使得材料可作为偏电子型发光层主体材料使用；另外，本发明化合物基团刚性较强，具有分子间不易结晶、不易聚集、具有良好成膜性的特点。作为有机电致发光功能层材料应用于OLED器件后，器件的电流效率，功率效率和外量子效率均得到很大改善；同时，对于器件寿命提升非常明显。

Description

一种含有酮的化合物及其在有机电致发光器件上的应用 技术领域
本发明涉及半导体技术领域，尤其是涉及一种含有酮的化合物，以及其在有机电致发光器件上的应用。
背景技术
有机电致发光(OLED:Organic Light Emission Diodes)器件技术既可以用来制造新型显示产品，也可以用于制作新型照明产品，有望替代现有的液晶显示和荧光灯照明，应用前景十分广泛。OLED发光器件犹如三明治的结构，包括电极材料膜层，以及夹在不同电极膜层之间的有机功能材料，各种不同功能材料根据用途相互叠加在一起共同组成OLED发光器件。作为电流器件，当对OLED发光器件的两端电极施加电压，并通过电场作用有机层功能材料膜层中的正负电荷，正负电荷进一步在发光层中复合，即产生OLED电致发光。
当前，OLED显示技术已经在智能手机，平板电脑等领域获得应用，进一步还将向电视等大尺寸应用领域扩展，但是，和实际的产品应用要求相比，OLED器件的发光效率，使用寿命等性能还需要进一步提升。对于OLED发光器件提高性能的研究包括：降低器件的驱动电压，提高器件的发光效率，提高器件的使用寿命等。为了实现OLED器件的性能的不断提升，不但需要从OLED器件结构和制作工艺的创新，更需要OLED光电功能材料不断研究和创新，创制出更高性能OLED的功能材料。应用于OLED器件的OLED光电功能材料从用途上可划分为两大类，即电荷注入传输材料和发光材料，进一步，还可将电荷注入传输材料分为电子注入传输材料、电子阻挡材料、空穴注入传输材料和空穴阻挡材料，还可以将发光材料分为主体发光材料和掺杂材料。为了制作高性能的OLED发光器件，要求各种有机功能材料具备良好的光电特性，譬如，作为电荷传输材料，要求具有良好的载流子迁移率，高玻璃化转化温度等，作为发光层的主体材料要求材料具有良好双极性，适当的HOMO/LUMO能阶等。
构成OLED器件的OLED光电功能材料膜层至少包括两层以上结构，产业上应用的OLED器件结构，则包括空穴注入层、空穴传输层、电子阻挡层、发光层、空穴阻挡层、电子传输层、电子注入层等多种膜层，也就是说应用于OLED器件的光电功能材料至少包含空穴注入材料，空穴传输材料，发光材料，电子传输材料等，材料类型和搭配形式具有丰富性和多样性的特点。另外，对于不同结构的OLED器件搭配而言，所使用的光电功能材料具有较强的选择性，相同 的材料在不同结构器件中的性能表现，也可能完全迥异。因此，针对当前OLED器件的产业应用要求，以及OLED器件的不同功能膜层，器件的光电特性需求，必须选择更适合，具有高性能的OLED功能材料或材料组合，才能实现器件的高效率、长寿命和低电压的综合特性。就当前OLED显示照明产业的实际需求而言，目前OLED材料的发展还远远不够，落后于面板制造企业的要求，作为材料企业开发更高性能的有机功能材料显得尤为重要。
发明内容
针对现有技术存在的上述问题，本申请人提供了一种含有酮的化合物及其在有机电致发光器件上的应用。本发明化合物含有酮类结构，具有较高的玻璃化温度和分子热稳定性，合适的HOMO和LUMO能级，高电子迁移率，应用于OLED器件制作后，可有效提高器件的发光效率和OLED器件的使用寿命。
本发明的技术方案如下：一种含有酮的化合物，该化合物的结构如通式(1)所示：
Figure PCTCN2018110692-appb-000001
通式(1)中，Ar 2表示为经取代或未经取代的C 1-10烷基、取代或未经取代的C 6-30芳基、经取代或未经取代的C 5-30杂芳基中的一种；
通式(1)中，Ar 1、Ar 3分别独立的表示为单键、经取代或未经取代的C 6-30亚芳基、经取代或未经取代的C 5-30亚杂芳基中的一种；Ar 1还可以表示为经取代或未经取代的C 1-10烷基、经取代或未经取代的C 6-30芳基、经取代或未经取代的C 5-30杂芳基中的一种；
通式(1)中，X表示为碳原子、氧原子或硫原子；
当X为碳原子时，k＝1，m、n分别独立的表示为0或者1，且m、n不相同；
当X为氧原子或硫原子时，k＝0，m＝0，n＝1。
通式(1)中，X 1、X 2分别独立的表示为单键、氧原子、C 1-10直链或支链烷基取代的亚烷基、芳基取代的亚烷基、烷基取代的亚胺基或芳基取代的亚胺基中的一种；X 1、X 2至少一个为单键。
在上述技术方案的基础上，本发明还可以做如下改进。
进一步，所述化合物的结构如通式(2)、通式(3)、通式(4)或通式(5)所示：
Figure PCTCN2018110692-appb-000002
进一步，所述Ar 1、Ar 3分别独立地表示为单键、亚苯基、亚联苯基或亚萘基中的一种；Ar 1还可以表示为甲基、苯基、联苯基或萘基中的一种；
Ar 2表示为甲基、苯基、联苯基或萘基中的一种。
进一步，所述通式(1)中的
Figure PCTCN2018110692-appb-000003
表示为：
Figure PCTCN2018110692-appb-000004
中的一种。
进一步，所述化合物的具体结构式为：
Figure PCTCN2018110692-appb-000005
Figure PCTCN2018110692-appb-000006
Figure PCTCN2018110692-appb-000007
Figure PCTCN2018110692-appb-000008
Figure PCTCN2018110692-appb-000009
Figure PCTCN2018110692-appb-000010
Figure PCTCN2018110692-appb-000011
Figure PCTCN2018110692-appb-000012
Figure PCTCN2018110692-appb-000013
Figure PCTCN2018110692-appb-000014
Figure PCTCN2018110692-appb-000015
(264)中的任一种。
本发明还提供一种如上所述的化合物的制备方法，制备过程中发生的反应方程式为：
(1)当X为氧原子或硫原子时，k＝0，m＝0，n＝1：
当Ar 3不表示单键时：
Figure PCTCN2018110692-appb-000016
上述反应方程式的具体反应过程为：
将原料A和中间体M溶解于甲苯和乙醇的混合溶液中，除氧后加入Pd(PPh 3) 4和K 2CO 3，在惰性气氛下95～110℃反应10～24个小时；待原料反应完全后，冷却、过滤，将滤液旋蒸除去溶剂，粗产品过硅胶柱，得到目标化合物；
其中，所述的甲苯和乙醇的用量为每克原料A使用30～50mL甲苯和5～10mL乙醇，中间体M与原料A的摩尔比为(1～1.5):1，Pd(PPh 3) 4与原料A的摩尔比为(0.006～0.02):1，K 2CO 3与原料A的摩尔比为(1.5～2):1；
当Ar 3表示单键时：
Figure PCTCN2018110692-appb-000017
上述反应方程式的具体反应过程为：
氮气氛围下，称取原料A溶解于四氢呋喃中，再将原料B及四(三苯基膦)钯加入，搅拌混合物，再加入碳酸钾水溶液，将上述反应物的混合溶液于反应温度70-90℃下加热回流5-20 小时；反应结束后，冷却加水，混合物用二氯甲烷萃取，萃取液用无水硫酸钠干燥，过滤并在减压下浓缩，所得残余物过硅胶柱纯化，得到目标化合物；
其中，所述原料A与原料B的摩尔比为1:(1.0～1.5)，四(三苯基膦)钯与原料A的摩尔比为(0.001～0.02):1，碳酸钾与原料A的摩尔比为(1.0～2.0):1，THF与原料A的用量比为1g：(10～30)ml。
(2)当X为碳原子时，k＝1，m＝0，n＝1：
当Ar 3不表示单键时：
Figure PCTCN2018110692-appb-000018
上述反应方程式的具体反应过程为：
将原料A和中间体N溶解于甲苯和乙醇的混合溶液中，除氧后加入Pd(PPh 3) 4和K 2CO 3，在惰性气氛下95～110℃反应10～24个小时；待原料反应完全后，冷却、过滤，将滤液旋蒸除去溶剂，粗产品过硅胶柱，得到目标化合物；
其中，所述的甲苯和乙醇的用量为每克原料A使用30～50mL甲苯和5～10mL乙醇，中间体N与原料A的摩尔比为(1～1.5):1，Pd(PPh 3) 4与原料A的摩尔比为(0.006～0.02):1，K 2CO 3与原料A的摩尔比为(1.5～2):1；
当Ar 3表示单键时：
Figure PCTCN2018110692-appb-000019
上述反应方程式的具体反应过程为：
氮气氛围下，称取原料A溶解于四氢呋喃中，再将原料C及四(三苯基膦)钯加入，搅拌混合物，再加入碳酸钾水溶液，将上述反应物的混合溶液于反应温度70-90℃下加热回流5-20小时；反应结束后，冷却加水，混合物用二氯甲烷萃取，萃取液用无水硫酸钠干燥，过滤并在 减压下浓缩，所得残余物过硅胶柱纯化，得到目标化合物；
其中，所述原料A与原料C的摩尔比为1:(1.0～1.5)，四(三苯基膦)钯与原料A的摩尔比为(0.001～0.02):1，碳酸钾与原料A的摩尔比为(1.0～2.0):1，THF与原料A的用量比为1g：(10～30)ml；
(3)当X为碳原子时，k＝1，m＝1，n＝0：
Figure PCTCN2018110692-appb-000020
具体反应过程为：
氮气氛围下，称取原料A溶解于四氢呋喃中，再将原料D及四(三苯基膦)钯加入，搅拌混合物，再加入碳酸钾水溶液，将上述反应物的混合溶液于反应温度70-90℃下加热回流5-20小时；反应结束后，冷却加水，混合物用二氯甲烷萃取，萃取液用无水硫酸钠干燥，过滤并在减压下浓缩，所得残余物过硅胶柱纯化，得到目标化合物；
所述原料A与原料D的摩尔比为1:1.0～1.5，四(三苯基膦)钯与原料A的摩尔比为0.001～0.02:1，碳酸钾与原料A的摩尔比为1.0～2.0:1，原料A与THF的用量比为1g：10～30ml。
本发明还提供一种有机电致发光器件，所述有机电致发光器件包括至少一层功能层含有上述的含有酮的化合物。
在上述技术方案的基础上，本发明还可以做如下改进。
进一步，所述有机电致发光器件包括发光层，所述发光层含有上述的含有酮的化合物。
进一步，所述有机电致发光器件包括空穴阻挡层/电子传输层，所述空穴阻挡层/电子传输层含有上述的含有酮的化合物。
本发明还提供一种照明或显示元件包括如上所述的有机电致发光器件。
本发明有益的技术效果在于：
本发明化合物以酮和螺蒽芴类基团为骨架，通过单键或者芳香基团连接，酮和螺蒽芴类基团均为电子性基团，具有深的HOMO能级和高电子迁移率，通过其他芳香基团的修饰，使HOMO能级自由调整，可以作为电子型发光材料使用，也可以作为空穴阻挡或电子传输层材料使用。本发明含有空穴基团的结构，可平衡材料的电子和空穴，使得材料可作为偏电子型发光层主体 材料使用。
另外，酮和螺蒽芴类基团都是吸电子基团，构成的分子不具有对称性，避免分子间的聚集作用，本发明化合物基团刚性较强，具有分子间不易结晶、不易聚集、具有良好成膜性的特点，具有高的玻璃化温度及热稳定性，所以，本发明化合物应用于OLED器件时，可保持材料成膜后的膜层稳定性，提高OLED器件使用寿命。
本发明所述化合物作为有机电致发光功能层材料应用于OLED器件后，器件的电流效率，功率效率和外量子效率均得到很大改善；同时，对于器件寿命提升非常明显，在OLED发光器件中具有良好的应用效果，具有良好的产业化前景。
附图说明
图1为本发明所列举的材料应用于OLED器件的结构示意图；
其中，1为透明基板层，2为ITO阳极层，3为空穴注入层，4为空穴传输或电子阻挡层，5为发光层，6为电子传输或空穴阻挡层，7为电子注入层，8为阴极反射电极层。
图2为电流效率随温度的变化曲线。
具体实施方式
实施例1：中间体M的合成：
Figure PCTCN2018110692-appb-000021
(1)将原料B和原料E溶解于甲苯和乙醇的混合溶液中，除氧后加入Pd(PPh 3) 4和K 2CO 3，在惰性气氛下95～110℃反应10～24个小时；待原料反应完全后，冷却、过滤，将滤液旋蒸除去溶剂，粗产品过硅胶柱，得到目标化合物；
其中，所述的甲苯和乙醇的用量为每克原料E使用30～50mL甲苯和5～10mL乙醇，原料B与原料E的摩尔比为(1～1.5):1，Pd(PPh 3) 4与原料E的摩尔比为(0.006～0.02):1，K 2CO 3与原料E的摩尔比为(1.5～2):1。
(2)在氮气保护下，称取中间体S溶于四氢呋喃中，冷却至-78℃，然后向反应体系中加入1.6mol/L正丁基锂的四氢呋喃溶液，在-78℃下反应3h后加入硼酸三异丙酯，反应2h，然后将反应体系升至0℃，加入2mol/L盐酸溶液，搅拌3h，反应完全，加入乙醚萃取，萃取液加入无 水硫酸镁干燥，旋蒸，用乙醇溶剂重结晶，得到中间体M；
其中，所述中间体S与正丁基锂的摩尔比为1:(1～1.5)；所述中间体S与硼酸三异丙酯的摩尔比为1:(1～1.5)。
以中间体M-1合成为例：
Figure PCTCN2018110692-appb-000022
(1)将0.01mol原料E-2和0.012mol原料B-1溶解于甲苯和乙醇的150mL(V 甲苯：V 乙醇＝5：1)混合溶液中，除氧后加入0.0002mol Pd(PPh 3) 4和0.02mol K 2CO 3，在惰性气氛下110℃反应24个小时，待原料反应完全后，冷却、过滤，将滤液旋蒸除去溶剂，粗产品过硅胶柱，得到中间体目标产物S-2；元素分析结构(分子式C 19H 11BrO 2)：理论值C,64.98；H,3.16；Br,22.75；测试值：C,64.98；H,3.16；Br,22.74；ESI-MS(m/z)(M+)：理论值为349.99，实测值为350.55。
(2)在氮气保护下，称取0.01mol中间体S-2溶于四氢呋喃中，冷却至-78℃，然后向反应体系中加入8ml 1.6mol/L正丁基锂的四氢呋喃溶液，在-78℃下反应3h后加入0.013mol硼酸三异丙酯，反应2h，然后将反应体系升至0℃，加入10ml 2mol/L盐酸溶液，搅拌3h，反应完全，加入乙醚萃取，萃取液加入无水硫酸镁干燥，旋蒸，用乙醇溶剂重结晶，得到中间体M-2；元素分析结构(分子式C 19H 13BO 4)：理论值C,72.19；H,4.15；B,3.42；测试值：C,72.19；H,4.15；B,3.43。ESI-MS(m/z)(M +)：理论值为316.09，实测值为316.49。
以中间体M-1的合成方法制备中间体M，具体结构如表1所示。
表1
Figure PCTCN2018110692-appb-000023
Figure PCTCN2018110692-appb-000024
Figure PCTCN2018110692-appb-000025
实施例2：化合物3的合成：
Figure PCTCN2018110692-appb-000026
在250mL三口瓶中，将0.01mol原料A-1和0.012mol中间体M-1溶解于甲苯和乙醇的150mL(V 甲苯：V 乙醇＝5：1)混合溶液中，除氧后加入0.0002mol Pd(PPh 3) 4和0.02mol K 2CO 3，在惰性气氛下110℃反应24个小时，待原料反应完全后，冷却、过滤，将滤液旋蒸除去溶剂，粗产品过硅胶柱，得到目标产物；元素分析结构(分子式C 47H 32O 2)：理论值C,89.78；H,5.13；测试值：C,89.77；H,5.13；ESI-MS(m/z)(M+)：理论值为628.24，实测值为628.55。
实施例3：化合物10的合成：
Figure PCTCN2018110692-appb-000027
在250mL三口瓶中，将0.01mol原料A-2和0.012mol中间体M-2溶解于甲苯和乙醇的150mL(V 甲苯：V 乙醇＝5：1)混合溶液中，除氧后加入0.0002mol Pd(PPh 3) 4和0.02mol K 2CO 3，在惰性气氛下110℃反应24个小时，待原料反应完全后，冷却、过滤，将滤液旋蒸除去溶剂，粗产品过硅胶柱，得到目标产物；元素分析结构(分子式C 44H 26O 3)：理论值C,87.69；H,4.35；测试值：C,87.68；H,4.35；ESI-MS(m/z)(M+)：理论值为602.19，实测值为602.77。
实施例4：化合物19的合成：
Figure PCTCN2018110692-appb-000028
化合物19的制备方法同实施例2，不同之处在于用原料A-2替换原料A-1，用中间体M-3替换中间体M-1。元素分析结构(分子式C 44H 26O 3)：理论值C,87.69；H,4.35；测试值：C,87.70；H,4.35。ESI-MS(m/z)(M +)：理论值为602.19，实测值为602.61。
实施例5：化合物20的合成：
Figure PCTCN2018110692-appb-000029
化合物20的制备方法同实施例2，不同之处在于用原料A-3替换原料A-1，用中间体M-3替换中间体M-1。元素分析结构(分子式C 44H 26O 3)：理论值C,87.69；H,4.35；测试值：C,87.69；H,4.35。ESI-MS(m/z)(M +)：理论值为602.19，实测值为602.74。
实施例6：化合物28的合成：
Figure PCTCN2018110692-appb-000030
在250mL三口瓶中，氮气氛围下，称取0.01mol原料A-2溶解于100ml四氢呋喃中，再将0.012mol原料B-1及0.0002mol四(三苯基膦)钯加入，搅拌混合物，再加入0.02mol碳酸钾 水溶液，将上述反应物的混合溶液于反应温度90℃下加热回流20小时；反应结束后，冷却加水，混合物用二氯甲烷萃取，萃取液用无水硫酸钠干燥，过滤并在减压下浓缩，所得残余物过硅胶柱纯化，得到目标化合物；元素分析结构(分子式C 38H 22O 3)：理论值C,86.67；H,4.21；测试值：C,86.66；H,4.21。ESI-MS(m/z)(M +)：理论值为526.16，实测值为526.74。
实施例7：化合物39的合成：
Figure PCTCN2018110692-appb-000031
化合物39的制备方法同实施例2，不同之处在于，用中间体M-4替换中间体M-1。元素分析结构(分子式C 47H 32O 2)：理论值C,89.78；H,5.13；测试值：C,89.79；H,5.13。ESI-MS(m/z)(M +)：理论值为628.24，实测值为628.53。
实施例8：化合物50的合成：
Figure PCTCN2018110692-appb-000032
化合物50的制备方法同实施例2，不同之处在于用原料A-4替换原料A-1，用中间体M-5替换中间体M-1。元素分析结构(分子式C 44H 26O 3)：理论值C,87.69；H,4.35；测试值：C,87.68；H,4.35。ESI-MS(m/z)(M +)：理论值为602.19，实测值为602.49。
实施例9：化合物61的合成：
Figure PCTCN2018110692-appb-000033
化合物61的制备方法同实施例2，不同之处在于用原料A-5替换原料A-1，用中间体M-6替换中间体M-1。元素分析结构(分子式C 44H 26O 3)：理论值C,87.69；H,4.35；测试值：C,87.69；H,4.34。ESI-MS(m/z)(M +)：理论值为602.19，实测值为602.82。
实施例10：化合物69的合成：
Figure PCTCN2018110692-appb-000034
在250mL三口瓶中，氮气氛围下，称取0.01mol原料A-6溶解于100ml四氢呋喃中，再将0.012mol原料B-2及0.0002mol四(三苯基膦)钯加入，搅拌混合物，再加入0.02mol碳酸钾水溶液，将上述反应物的混合溶液于反应温度90℃下加热回流20小时；反应结束后，冷却加水，混合物用二氯甲烷萃取，萃取液用无水硫酸钠干燥，过滤并在减压下浓缩，所得残余物过硅胶柱纯化，得到目标化合物；元素分析结构(分子式C 41H 28O 2)：理论值C,89.10；H,5.11；测试值：C,89.10；H,5.12。ESI-MS(m/z)(M +)：理论值为552.21，实测值为552.54。
实施例11：化合物73的合成：
Figure PCTCN2018110692-appb-000035
化合物73的制备方法同实施例2，不同之处在于用原料A-2替换原料A-1，用中间体M-7替换中间体M-1。元素分析结构(分子式C 50H 30O 3)：理论值C,88.47；H,4.46；测试值：C,88.47；H,4.47。ESI-MS(m/z)(M +)：理论值为678.22，实测值为678.74。
实施例12：化合物83的合成：
Figure PCTCN2018110692-appb-000036
化合物83的制备方法同实施例2，不同之处在于用原料A-3替换原料A-1，用中间体M-8替换中间体M-1。元素分析结构(分子式C 50H 30O 3)：理论值C,88.47；H,4.46；测试值：C,88.46；H,4.46。ESI-MS(m/z)(M +)：理论值为678.22，实测值为678.81。
实施例13：化合物96的合成：
Figure PCTCN2018110692-appb-000037
化合物96的制备方法同实施例2，不同之处在于用原料A-6替换原料A-1，用中间体M-9 替换中间体M-1。元素分析结构(分子式C 53H 36O 2)：理论值C,90.31；H,5.15；测试值：C,90.31；H,5.14。ESI-MS(m/z)(M +)：理论值为704.27，实测值为704.91。
实施例14：化合物115的合成：
Figure PCTCN2018110692-appb-000038
化合物115的制备方法同实施例2，不同之处在于用原料A-5替换原料A-1，用中间体M-10替换中间体M-1。元素分析结构(分子式C 50H 30O 3)：理论值C,88.47；H,4.46；测试值：C,88.47；H,4.47。ESI-MS(m/z)(M +)：理论值为678.22，实测值为678.88。
实施例15：化合物128的合成：
Figure PCTCN2018110692-appb-000039
化合物128的制备方法同实施例2，不同之处在于用原料A-3替换原料A-1，用中间体M-11替换中间体M-1。元素分析结构(分子式C 50H 30O 3)：理论值C,88.47；H,4.46；测试值：C,88.46；H,4.46。ESI-MS(m/z)(M +)：理论值为678.22，实测值为678.76。
实施例16：化合物144的合成：
Figure PCTCN2018110692-appb-000040
化合物144的制备方法同实施例2，不同之处在于用原料A-4替换原料A-1，用中间体M-12替换中间体M-1。元素分析结构(分子式C 53H 36O 2)：理论值C,90.31；H,5.15；测试值：C,90.30；H,5.15。ESI-MS(m/z)(M +)：理论值为704.27，实测值为704.74。
实施例17：化合物155的合成：
Figure PCTCN2018110692-appb-000041
化合物155的制备方法同实施例2，不同之处在于用原料A-3替换原料A-1，用中间体M-13替换中间体M-1。元素分析结构(分子式C 50H 30O 3)：理论值C,88.47；H,4.46；测试值：C,88.46；H,4.46。ESI-MS(m/z)(M +)：理论值为678.22，实测值为678.84。
实施例18：化合物163的合成：
Figure PCTCN2018110692-appb-000042
化合物163制备方法同实施例2，不同之处在于用原料A-2替换原料A-1，用中间体M-14替换中间体M-1。元素分析结构(分子式C 50H 30O 3)：理论值C,88.47；H,4.46；测试值：C,88.46；H,4.46。ESI-MS(m/z)(M +)：理论值为678.22，实测值为678.46。
实施例19：化合物177的合成：
Figure PCTCN2018110692-appb-000043
化合物177制备方法同实施例2，不同之处在于用原料A-6替换原料A-1，用中间体M-15替换中间体M-1。元素分析结构(分子式C 53H 36O 2)：理论值C,90.31；H,5.15；测试值：C,90.31；H,5.15。ESI-MS(m/z)(M +)：理论值为704.27，实测值为704.89。
实施例20：化合物196的合成：
Figure PCTCN2018110692-appb-000044
化合物196的制备方法同实施例2，不同之处在于用原料A-5替换原料A-1，用中间体M-16替换中间体M-1。元素分析结构(分子式C 50H 30O 3)：理论值C,88.47；H,4.46；测试值：C,88.47；H,4.45。ESI-MS(m/z)(M +)：理论值为678.22，实测值为678.86。
实施例21：化合物218的合成：
Figure PCTCN2018110692-appb-000045
化合物218的制备方法同实施例2，不同之处在于用原料A-3替换原料A-1，用中间体M-17替换中间体M-1。元素分析结构(分子式C 50H 30O 3)：理论值C,88.47；H,4.46；测试值：C,88.46；H,4.46。ESI-MS(m/z)(M +)：理论值为678.22，实测值为678.59。
实施例22：化合物231的合成：
Figure PCTCN2018110692-appb-000046
化合物231的制备方法同实施例2，不同之处在于用原料A-6替换原料A-1，用中间体M-18替换中间体M-1。元素分析结构(分子式C 53H 36O 2)：理论值C,90.31；H,5.15；测试值：C,90.30；H,5.15。ESI-MS(m/z)(M +)：理论值为704.27，实测值为704.95。
实施例23：化合物242的合成：
Figure PCTCN2018110692-appb-000047
化合物242的制备方法同实施例6，不同之处在于用原料C-1替换原料B-1，用原料A-4替换原料A-1。元素分析结构(分子式C 41H 28O 2)：理论值C,89.10；H,5.11；测试值：C,89.11；H,5.11。ESI-MS(m/z)(M +)：理论值为552.21，实测值为552.74。
实施例24：化合物261的合成：
Figure PCTCN2018110692-appb-000048
化合物261的制备方法同实施例6，不同之处在于用原料D-1替换原料B-1，用原料A-6替换原料A-1。元素分析结构(分子式C 54H 38O)：理论值C,92.27；H,5.45；测试值：C,92.26；H,5.45。ESI-MS(m/z)(M +)：理论值为702.29，实测值为702.66。
本有机化合物在发光器件中使用，具有高的Tg(玻璃转化温度)温度和三线态能级(T1)，合适的HOMO、LUMO能级，可作为空穴阻挡/电子传输材料使用，也可作为发光层材料使用。对本发明化合物及现有材料分别进行热性能、T1能级以及HOMO能级测试，结果如表2所示。
表2
Figure PCTCN2018110692-appb-000049
Figure PCTCN2018110692-appb-000050
注：三线态能级T1是由日立的F4600荧光光谱仪测试，材料的测试条件为2*10 -5的甲苯溶液；玻璃化温度Tg由示差扫描量热法(DSC，德国耐驰公司DSC204F1示差扫描量热仪)测定，升温速率10℃/min；热失重温度Td是在氮气气氛中失重1％的温度，在日本岛津公司的TGA-50H热重分析仪上进行测定，氮气流量为20mL/min；最高占据分子轨道HOMO能级是由电离能量测试系统(IPS3)测试，测试为大气环境。
由上表数据可知，对比目前应用的CBP和TPBi材料，本发明的有机化合物具有高的玻璃转化温度，可提高材料膜相态稳定性，进一步提高器件使用寿命；具有高的三线态能级，可以阻挡发光层能量损失，从而提升器件发光效率。同时本发明材料和应用材料具有相似的HOMO能级。因此，本发明含有酮的有机材料在应用于OLED器件的不同功能层后，可有效提高器件 的发光效率及使用寿命。
以下通过器件实施例1～23和器件比较例1详细说明本发明合成的OLED材料在器件中的应用效果。本发明所述器件实施例2～23、器件比较例1与器件实施例1相比所述器件的制作工艺完全相同，并且所采用了相同的基板材料和电极材料，电极材料的膜厚也保持一致，所不同的是器件实施例2～15对器件中的发光层材料做了变换；器件实施例16～23对器件的空穴阻挡/电子传输层材料做了变换，各实施例所得器件的性能测试结果如表3所示。
器件实施例1：
如图1所示，一种电致发光器件，其制备步骤包括：a)清洗透明基板层1上的ITO阳极层2，分别用去离子水、丙酮、乙醇超声清洗各15分钟，然后在等离子体清洗器中处理2分钟；b)在ITO阳极层2上，通过真空蒸镀方式蒸镀空穴注入层材料HAT-CN，厚度为10nm，这层作为空穴注入层3；c)在空穴注入层3上，通过真空蒸镀方式蒸镀空穴传输材料NPB，厚度为80nm，该层为空穴传输层/电子阻挡层4；d)在空穴传输/电子阻挡层4之上蒸镀发光层5，主体材料为本发明实施例制备的化合物10和化合物GH，掺杂材料为Ir(ppy) 3，化合物10、GH和Ir(ppy) 3三者质量比为为50:50:10，厚度为30nm；e)在发光层5之上，通过真空蒸镀方式蒸镀电子传输材料TPBI，厚度为40nm，这层有机材料作为空穴阻挡/电子传输层6使用；f)在空穴阻挡/电子传输层6之上，真空蒸镀电子注入层LiF，厚度为1nm，该层为电子注入层7；g)在电子注入层7之上，真空蒸镀阴极Al(100nm)，该层为阴极反射电极层8；按照上述步骤完成电致发光器件的制作后，测量器件的驱动电压，电流效率，其结果见表3所示。相关材料的分子结构式如下所示：
Figure PCTCN2018110692-appb-000051
器件实施例2：ITO阳极层2(厚度：150nm)/空穴注入层3(厚度：10nm，材料：HAT-CN)/空穴传输层4(厚度：80nm，材料：NPB)/发光层5(厚度：40nm，材料：本发明实施例制备的化合物19、GH和Ir(ppy) 3按重量比50:50:10混掺构成)/空穴阻挡/电子传输层6(厚度：35nm， 材料：TPBI)/电子注入层7(厚度：1nm，材料：LiF)/Al(厚度：100nm)。
器件实施例3：ITO阳极层2(厚度：150nm)/空穴注入层3(厚度：10nm，材料：HAT-CN)/空穴传输层4(厚度：80nm，材料：NPB)/发光层5(厚度：40nm，材料：本发明实施例制备的化合物28、GH和Ir(ppy) 3按重量比50:50:10混掺构成)/空穴阻挡/电子传输层6(厚度：35nm，材料：TPBI)/电子注入层7(厚度：1nm，材料：LiF)/Al(厚度：100nm)。
器件实施例4：ITO阳极层2(厚度：150nm)/空穴注入层3(厚度：10nm，材料：HAT-CN)/空穴传输层4(厚度：80nm，材料：NPB)/发光层5(厚度：40nm，材料：本发明实施例制备的化合物50、GH和Ir(ppy) 3按重量比50:50:10混掺构成)/空穴阻挡/电子传输层6(厚度：35nm，材料：TPBI)/电子注入层7(厚度：1nm，材料：LiF)/Al(厚度：100nm)。
器件实施例5：ITO阳极层2(厚度：150nm)/空穴注入层3(厚度：10nm，材料：HAT-CN)/空穴传输层4(厚度：80nm，材料：NPB)/发光层5(厚度：40nm，材料：本发明实施例制备的化合物61、GH和Ir(ppy) 3按重量比50:50:10混掺构成)/空穴阻挡/电子传输层6(厚度：35nm，材料：TPBI)/电子注入层7(厚度：1nm，材料：LiF)/Al(厚度：100nm)。
器件实施例6：ITO阳极层2(厚度：150nm)/空穴注入层3(厚度：10nm，材料：HAT-CN)/空穴传输层4(厚度：80nm，材料：NPB)/发光层5(厚度：40nm，材料：本发明实施例制备的化合物69、GH和Ir(ppy) 3按重量比50:50:10混掺构成)/空穴阻挡/电子传输层6(厚度：35nm，材料：TPBI)/电子注入层7(厚度：1nm，材料：LiF)/Al(厚度：100nm)。
器件实施例7：ITO阳极层2(厚度：150nm)/空穴注入层3(厚度：10nm，材料：HAT-CN)/空穴传输层4(厚度：80nm，材料：NPB)/发光层5(厚度：40nm，材料：本发明实施例制备的化合物73、GH和Ir(ppy) 3按重量比50:50:10混掺构成)/空穴阻挡/电子传输层6(厚度：35nm，材料：TPBI)/电子注入层7(厚度：1nm，材料：LiF)/Al(厚度：100nm)。
器件实施例8：ITO阳极层2(厚度：150nm)/空穴注入层3(厚度：10nm，材料：HAT-CN)/空穴传输层4(厚度：80nm，材料：NPB)/发光层5(厚度：40nm，材料：本发明实施例制备的化合物96、GH和Ir(ppy) 3按重量比50:50:10混掺构成)/空穴阻挡/电子传输层6(厚度：35nm，材料：TPBI)/电子注入层7(厚度：1nm，材料：LiF)/Al(厚度：100nm)。
器件实施例9：ITO阳极层2(厚度：150nm)/空穴注入层3(厚度：10nm，材料：HAT-CN)/空穴传输层4(厚度：80nm，材料：NPB)/发光层5(厚度：40nm，材料：本发明实施例制备的化合物115、GH和Ir(ppy) 3按重量比50:50:10混掺构成)/空穴阻挡/电子传输层6(厚度：35nm，材料：TPBI)/电子注入层7(厚度：1nm，材料：LiF)/Al(厚度：100nm)。
器件实施例10：ITO阳极层2(厚度：150nm)/空穴注入层3(厚度：10nm，材料：HAT-CN) /空穴传输层4(厚度：80nm，材料：NPB)/发光层5(厚度：40nm，材料：本发明实施例制备的化合物144、GH和Ir(ppy) 3按重量比50:50:10混掺构成)/空穴阻挡/电子传输层6(厚度：35nm，材料：TPBI)/电子注入层7(厚度：1nm，材料：LiF)/Al(厚度：100nm)。
器件实施例11：ITO阳极层2(厚度：150nm)/空穴注入层3(厚度：10nm，材料：HAT-CN)/空穴传输层4(厚度：80nm，材料：NPB)/发光层5(厚度：40nm，材料：本发明实施例制备的化合物163、GH和Ir(ppy) 3按重量比50:50:10混掺构成)/空穴阻挡/电子传输层6(厚度：35nm，材料：TPBI)/电子注入层7(厚度：1nm，材料：LiF)/Al(厚度：100nm)。
器件实施例12：ITO阳极层2(厚度：150nm)/空穴注入层3(厚度：10nm，材料：HAT-CN)/空穴传输层4(厚度：80nm，材料：NPB)/发光层5(厚度：40nm，材料：本发明实施例制备的化合物177、GH和Ir(ppy) 3按重量比50:50:10混掺构成)/空穴阻挡/电子传输层6(厚度：35nm，材料：TPBI)/电子注入层7(厚度：1nm，材料：LiF)/Al(厚度：100nm)。
器件实施例13：ITO阳极层2(厚度：150nm)/空穴注入层3(厚度：10nm，材料：HAT-CN)/空穴传输层4(厚度：80nm，材料：NPB)/发光层5(厚度：40nm，材料：本发明实施例制备的化合物196、GH和Ir(ppy) 3按重量比50:50:10混掺构成)/空穴阻挡/电子传输层6(厚度：35nm，材料：TPBI)/电子注入层7(厚度：1nm，材料：LiF)/Al(厚度：100nm)。
器件实施例14：ITO阳极层2(厚度：150nm)/空穴注入层3(厚度：10nm，材料：HAT-CN)/空穴传输层4(厚度：80nm，材料：NPB)/发光层5(厚度：40nm，材料：本发明实施例制备的化合物231、GH和Ir(ppy) 3按重量比50:50:10混掺构成)/空穴阻挡/电子传输层6(厚度：35nm，材料：TPBI)/电子注入层7(厚度：1nm，材料：LiF)/Al(厚度：100nm)。
器件实施例15：ITO阳极层2(厚度：150nm)/空穴注入层3(厚度：10nm，材料：HAT-CN)/空穴传输层4(厚度：80nm，材料：NPB)/发光层5(厚度：40nm，材料：本发明实施例制备的化合物261、GH和Ir(ppy) 3按重量比50:50:10混掺构成)/空穴阻挡/电子传输层6(厚度：35nm，材料：TPBI)/电子注入层7(厚度：1nm，材料：LiF)/Al(厚度：100nm)。
器件实施例16：ITO阳极层2(厚度：150nm)/空穴注入层3(厚度：10nm，材料：HAT-CN)/空穴传输层4(厚度：80nm，材料：NPB)/发光层5(厚度：40nm，材料：CBP和Ir(ppy) 3按重量比90:10混掺构成)/空穴阻挡/电子传输层6(厚度：35nm，材料：本发明实施例制备的化合物3)/电子注入层7(厚度：1nm，材料：LiF)/Al(厚度：100nm)。
器件实施例17：ITO阳极层2(厚度：150nm)/空穴注入层3(厚度：10nm，材料：HAT-CN)/空穴传输层4(厚度：80nm，材料：NPB)/发光层5(厚度：40nm，材料：CBP和Ir(ppy) 3按重量比90:10混掺构成)/空穴阻挡/电子传输层6(厚度：35nm，材料：本发明实施例制备的化 合物20)/电子注入层7(厚度：1nm，材料：LiF)/Al(厚度：100nm)。
器件实施例18：ITO阳极层2(厚度：150nm)/空穴注入层3(厚度：10nm，材料：HAT-CN)/空穴传输层4(厚度：80nm，材料：NPB)/发光层5(厚度：40nm，材料：CBP和Ir(ppy) 3按重量比90:10混掺构成)/空穴阻挡/电子传输层6(厚度：35nm，材料：本发明实施例制备的化合物39)/电子注入层7(厚度：1nm，材料：LiF)/Al(厚度：100nm)。
器件实施例19：ITO阳极层2(厚度：150nm)/空穴注入层3(厚度：10nm，材料：HAT-CN)/空穴传输层4(厚度：80nm，材料：NPB)/发光层5(厚度：40nm，材料：CBP和Ir(ppy) 3按重量比90:10混掺构成)/空穴阻挡/电子传输层6(厚度：35nm，材料：本发明实施例制备的化合物83)/电子注入层7(厚度：1nm，材料：LiF)/Al(厚度：100nm)。
器件实施例20：ITO阳极层2(厚度：150nm)/空穴注入层3(厚度：10nm，材料：HAT-CN)/空穴传输层4(厚度：80nm，材料：NPB)/发光层5(厚度：40nm，材料：CBP和Ir(ppy) 3按重量比90:10混掺构成)/空穴阻挡/电子传输层6(厚度：35nm，材料：本发明实施例制备的化合物128)/电子注入层7(厚度：1nm，材料：LiF)/Al(厚度：100nm)。
器件实施例21：ITO阳极层2(厚度：150nm)/空穴注入层3(厚度：10nm，材料：HAT-CN)/空穴传输层4(厚度：80nm，材料：NPB)/发光层5(厚度：40nm，材料：CBP和Ir(ppy) 3按重量比90:10混掺构成)/空穴阻挡/电子传输层6(厚度：35nm，材料：本发明实施例制备的化合物155)/电子注入层7(厚度：1nm，材料：LiF)/Al(厚度：100nm)。
器件实施例22：ITO阳极层2(厚度：150nm)/空穴注入层3(厚度：10nm，材料：HAT-CN)/空穴传输层4(厚度：80nm，材料：NPB)/发光层5(厚度：40nm，材料：CBP和Ir(ppy) 3按重量比90:10混掺构成)/空穴阻挡/电子传输层6(厚度：35nm，材料：本发明实施例制备的化合物218)/电子注入层7(厚度：1nm，材料：LiF)/Al(厚度：100nm)。
器件实施例23：ITO阳极层2(厚度：150nm)/空穴注入层3(厚度：10nm，材料：HAT-CN)/空穴传输层4(厚度：80nm，材料：NPB)/发光层5(厚度：40nm，材料：CBP和Ir(ppy) 3按重量比90:10混掺构成)/空穴阻挡/电子传输层6(厚度：35nm，材料：本发明实施例制备的化合物242)/电子注入层7(厚度：1nm，材料：LiF)/Al(厚度：100nm)。
器件比较例1：ITO阳极层2(厚度：150nm)/空穴注入层3(厚度：10nm，材料：HAT-CN)/空穴传输层4(厚度：80nm，材料：NPB)/发光层5(厚度：40nm，材料：CBP和Ir(ppy) 3按重量比90:10混掺构成)/空穴阻挡/电子传输层6(厚度：35nm，材料：TPBI)/电子注入层7(厚度：1nm，材料：LiF)/Al(厚度：100nm)。所得电致发光器件的检测数据见表3所示。
表3
Figure PCTCN2018110692-appb-000052
由表3的结果可以看出，本发明有机化合物可应用于OLED发光器件制作，并且与比较例相比，无论是效率还是寿命均比已知OLED材料获得较大改观，特别是器件的使用寿命获得较大的提升。
进一步的本发明材料制备的OLED器件在低温下工作时效率也比较稳定，将器件实施例4、12、21和器件比较例1在-10～80℃区间进行效率测试，所得结果如表4和图2所示。
表4
Figure PCTCN2018110692-appb-000053
从表4和图2的数据可知，器件实施例4、12、21为本发明材料和已知材料搭配的器件结构，和器件比较例1相比，不仅低温效率高，而且在温度升高过程中，效率平稳升高。
以上所述仅为本发明的较佳实施例，并不用以限制本发明，凡在本发明的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本发明的保护范围之内。

Claims (10)

  1. 一种含有酮的化合物，其特征在于,该化合物的结构如通式(1)所示：
    Figure PCTCN2018110692-appb-100001
    通式(1)中，Ar 2表示为经取代或未经取代的C 1-10烷基、取代或未经取代的C 6-30芳基、经取代或未经取代的C 5-30杂芳基中的一种；
    通式(1)中，Ar 1、Ar 3分别独立的表示为单键、经取代或未经取代的C 6-30亚芳基、经取代或未经取代的C 5-30亚杂芳基中的一种；Ar 1还可以表示为经取代或未经取代的C 1-10烷基、经取代或未经取代的C 6-30芳基、经取代或未经取代的C 5-30杂芳基中的一种；
    通式(1)中，X表示为碳原子、氧原子或硫原子；
    当X为碳原子时，k＝1，m、n分别独立的表示为0或者1，且m、n不相同；
    当X为氧原子或硫原子时，k＝0，m＝0，n＝1；
    通式(1)中，X 1、X 2分别独立的表示为单键、氧原子、C 1-10直链或支链烷基取代的亚烷基、芳基取代的亚烷基、烷基取代的亚胺基或芳基取代的亚胺基中的一种；X 1、X 2至少一个为单键。
  2. 根据权利要求1所述的化合物，其特征在于，所述化合物的结构如通式(2)、通式(3)、通式(4)或通式(5)所示：
    Figure PCTCN2018110692-appb-100002
  3. 根据权利要求1所述的化合物，其特征在于，所述Ar 1、Ar 3分别独立地表示为单键、亚 苯基、亚联苯基或亚萘基中的一种；Ar 1还可以表示为甲基、苯基、联苯基或萘基中的一种；
    Ar 2表示为甲基、苯基、联苯基或萘基中的一种。
  4. 根据权利要求1所述的化合物，其特征在于，所述通式(1)中的
    Figure PCTCN2018110692-appb-100003
    表示为：
    Figure PCTCN2018110692-appb-100004
    中的一种。
  5. 根据权利要求1所述的化合物，其特征在于，所述化合物的具体结构式为：
    Figure PCTCN2018110692-appb-100005
    Figure PCTCN2018110692-appb-100006
    Figure PCTCN2018110692-appb-100007
    Figure PCTCN2018110692-appb-100008
    Figure PCTCN2018110692-appb-100009
    Figure PCTCN2018110692-appb-100010
    Figure PCTCN2018110692-appb-100011
    Figure PCTCN2018110692-appb-100012
    Figure PCTCN2018110692-appb-100013
    Figure PCTCN2018110692-appb-100014
    中的任一种。
  6. 一种如权利要求1～5任一项所述的化合物的制备方法，其特征在于，制备过程中发生的反应方程式为：
    (1)当X为氧原子或硫原子时，k＝0，m＝0，n＝1：
    当Ar 3不表示单键时：
    Figure PCTCN2018110692-appb-100015
    上述反应方程式的具体反应过程为：
    将原料A和中间体M溶解于甲苯和乙醇的混合溶液中，除氧后加入Pd(PPh 3) 4和K 2CO 3，在惰性气氛下95～110℃反应10～24个小时；待原料反应完全后，冷却、过滤，将滤液旋蒸除去溶剂，粗产品过硅胶柱，得到目标化合物；
    其中，所述的甲苯和乙醇的用量为每克原料A使用30～50mL甲苯和5～10mL乙醇，中间体M与原料A的摩尔比为(1～1.5):1，Pd(PPh 3) 4与原料A的摩尔比为(0.006～0.02):1，K 2CO 3与原料A的摩尔比为(1.5～2):1；
    当Ar 3表示单键时：
    Figure PCTCN2018110692-appb-100016
    上述反应方程式的具体反应过程为：
    氮气氛围下，称取原料A溶解于四氢呋喃中，再将原料B及四(三苯基膦)钯加入，搅拌混合物，再加入碳酸钾水溶液，将上述反应物的混合溶液于反应温度70-90℃下加热回流5-20小时；反应结束后，冷却加水，混合物用二氯甲烷萃取，萃取液用无水硫酸钠干燥，过滤并在减压下浓缩，所得残余物过硅胶柱纯化，得到目标化合物；
    其中，所述原料A与原料B的摩尔比为1:(1.0～1.5)，四(三苯基膦)钯与原料A的摩尔比为(0.001～0.02):1，碳酸钾与原料A的摩尔比为(1.0～2.0):1，THF与原料A的用量比为1g：(10～30)ml。
    (2)当X为碳原子时，k＝1，m＝0，n＝1：
    当Ar 3不表示单键时：
    Figure PCTCN2018110692-appb-100017
    上述反应方程式的具体反应过程为：
    将原料A和中间体N溶解于甲苯和乙醇的混合溶液中，除氧后加入Pd(PPh 3) 4和K 2CO 3，在惰性气氛下95～110℃反应10～24个小时；待原料反应完全后，冷却、过滤，将滤液旋蒸除去溶剂，粗产品过硅胶柱，得到目标化合物；
    其中，所述的甲苯和乙醇的用量为每克原料A使用30～50mL甲苯和5～10mL乙醇，中间体N与原料A的摩尔比为(1～1.5):1，Pd(PPh 3) 4与原料A的摩尔比为(0.006～0.02):1，K 2CO 3与原料A的摩尔比为(1.5～2):1；
    当Ar 3表示单键时：
    Figure PCTCN2018110692-appb-100018
    上述反应方程式的具体反应过程为：
    氮气氛围下，称取原料A溶解于四氢呋喃中，再将原料C及四(三苯基膦)钯加入，搅拌混合物，再加入碳酸钾水溶液，将上述反应物的混合溶液于反应温度70-90℃下加热回流5-20小时；反应结束后，冷却加水，混合物用二氯甲烷萃取，萃取液用无水硫酸钠干燥，过滤并在减压下浓缩，所得残余物过硅胶柱纯化，得到目标化合物；
    其中，所述原料A与原料C的摩尔比为1:(1.0～1.5)，四(三苯基膦)钯与原料A的摩尔比为(0.001～0.02):1，碳酸钾与原料A的摩尔比为(1.0～2.0):1，THF与原料A的用量比为1g：(10～30)ml；
    (3)当X为碳原子时，k＝1，m＝1，n＝0：
    Figure PCTCN2018110692-appb-100019
    具体反应过程为：
    氮气氛围下，称取原料A溶解于四氢呋喃中，再将原料D及四(三苯基膦)钯加入，搅拌混合物，再加入碳酸钾水溶液，将上述反应物的混合溶液于反应温度70-90℃下加热回流5-20小时；反应结束后，冷却加水，混合物用二氯甲烷萃取，萃取液用无水硫酸钠干燥，过滤并在减压下浓缩，所得残余物过硅胶柱纯化，得到目标化合物；
    所述原料A与原料D的摩尔比为1:1.0～1.5，四(三苯基膦)钯与原料A的摩尔比为0.001～0.02:1，碳酸钾与原料A的摩尔比为1.0～2.0:1，原料A与THF的用量比为1g：10～30ml。
  7. 一种有机电致发光器件，其特征在于，所述有机电致发光器件包括至少一层功能层含有权利要求1～5任一项所述的含有酮的化合物。
  8. 根据权利要求7所述的有机电致发光器件，其特征在于，包括发光层，所述发光层含有权利要求1～5任一项所述的含有酮的化合物。
  9. 根据权利要求7所述的有机电致发光器件，其特征在于，包括空穴阻挡层/电子传输层，所述空穴阻挡层/电子传输层含有权利要求1～5任一项所述的含有酮的化合物。
  10. 一种照明或显示元件，其特征在于，包括如权利要求7-9任一项所述的有机电致发光器件。
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