WO2020000827A1 - 一种稠环化合物及其制备方法和用途 - Google Patents
一种稠环化合物及其制备方法和用途 Download PDFInfo
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- WO2020000827A1 WO2020000827A1 PCT/CN2018/113123 CN2018113123W WO2020000827A1 WO 2020000827 A1 WO2020000827 A1 WO 2020000827A1 CN 2018113123 W CN2018113123 W CN 2018113123W WO 2020000827 A1 WO2020000827 A1 WO 2020000827A1
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- 0 CC(C)(C)c1ccc(C(C)(*)*)cc1 Chemical compound CC(C)(C)c1ccc(C(C)(*)*)cc1 0.000 description 5
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- NFFWWXVHQUQGKZ-UHFFFAOYSA-N c(cc1)ccc1-c1nc(N2c(cccc3-c4c5c6c7cccc6[o]c5ccn4)c3N7c3c2cccc3)nc2c1cccc2 Chemical compound c(cc1)ccc1-c1nc(N2c(cccc3-c4c5c6c7cccc6[o]c5ccn4)c3N7c3c2cccc3)nc2c1cccc2 NFFWWXVHQUQGKZ-UHFFFAOYSA-N 0.000 description 1
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- PVIQOJZICMAGED-UHFFFAOYSA-N c1ccc(C(c2ccc(c3c4[n]5-c6c-7cccc6N(c(cc6)cc(c8ccccc88)c6[n]8-c6ccccc6)c4ccc3)c5c2-2)c3c-2c-7ncc3)cc1 Chemical compound c1ccc(C(c2ccc(c3c4[n]5-c6c-7cccc6N(c(cc6)cc(c8ccccc88)c6[n]8-c6ccccc6)c4ccc3)c5c2-2)c3c-2c-7ncc3)cc1 PVIQOJZICMAGED-UHFFFAOYSA-N 0.000 description 1
- QALXHWKEQSVNDC-UHFFFAOYSA-N c1ccc(cc(cc2)-c3nc(N(c4ccc5)c6cccc-7c6-[n]6c4c5c4ccc5[o]c8cccc-7c8c5c64)nc4c3cccc4)c2c1 Chemical compound c1ccc(cc(cc2)-c3nc(N(c4ccc5)c6cccc-7c6-[n]6c4c5c4ccc5[o]c8cccc-7c8c5c64)nc4c3cccc4)c2c1 QALXHWKEQSVNDC-UHFFFAOYSA-N 0.000 description 1
- HJQVCSQWIZHJAE-UHFFFAOYSA-N c1ccc(cc(cc2)-c3nc(N4c(cccc5-c6c7c8c9cccc8[o]c7ccc6)c5N9c5c4cccc5)nc4c3cccc4)c2c1 Chemical compound c1ccc(cc(cc2)-c3nc(N4c(cccc5-c6c7c8c9cccc8[o]c7ccc6)c5N9c5c4cccc5)nc4c3cccc4)c2c1 HJQVCSQWIZHJAE-UHFFFAOYSA-N 0.000 description 1
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- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- 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
- H10K50/12—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers comprising dopants
- H10K50/121—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers comprising dopants for assisting energy transfer, e.g. sensitization
Definitions
- the invention belongs to the field of display technology, and particularly relates to a fused ring compound and a preparation method and application thereof.
- OLED Organic Light-Emitting Diode
- OLEDs use a sandwich structure, that is, an organic light-emitting layer is sandwiched between the electrodes on both sides.
- the light-emitting mechanism is: driven by an external electric field, electrons and holes are injected into the organic electron transport layer and the hole transport layer from the cathode and the anode, respectively, and the exciton is recombined in the organic light-emitting layer, and the exciton radiation transitions back to the ground state. And glow.
- electroluminescence singlet excitons and triplet excitons are generated at the same time. According to the statistical law of electronic spins, it is estimated that the ratio of singlet excitons to triplet excitons is 1: 3, and the singlet excitons transition to the ground state. , The material fluoresces, the triplet exciton transitions back to the ground state, and the material emits phosphorescence.
- Fluorescent materials are the earliest applied organic electroluminescent materials (Organic Electroluminescent Materials). They are many types and cheap, but are limited by the spin inhibition of electrons and can only use 25% singlet excitons to emit light. The internal quantum efficiency is low. Limits the efficiency of the device. For phosphorescent materials, using the spin coupling of heavy atoms, the energy of a singlet exciton is transferred to the triplet exciton through intersystem crossing (ISC), and then the triplet exciton emits phosphorescence, which can theoretically be achieved 100% internal quantum efficiency. However, concentration quenching and triplet-triplet annihilation are common in phosphorescent devices, affecting the luminous efficiency of the device.
- ISC intersystem crossing
- the doped OLED device has advantages in terms of the luminous efficiency of the device. Therefore, the light emitting layer material is often formed by doping the guest material with the host material. Among them, the host material is an important factor affecting the luminous efficiency and performance of the OLED device.
- 4,4'-Bis (9H-carbazol-9-yl) biphenyl (CBP) is a widely used host material with good hole transport properties.
- CBP 9,H-carbazol-9-yl) biphenyl
- CBP is a hole-type host material
- electrons and air Cavity transmission is unbalanced
- exciton recombination efficiency is low
- luminous area is not ideal
- device roll-off phenomenon is severe during operation
- the triplet energy of CBP is lower than that of blue light-doped materials, leading to the loss of host material
- the efficiency of energy transfer to the guest material is low, reducing device efficiency.
- the technical problem to be solved by the present invention is to overcome the low triplet energy level and easy crystallization of the host material of the light emitting layer in the prior art.
- the charge transfer of the host material is unbalanced, the light emitting region is not ideal, and the energy of the host material cannot be Efficient transfer to the guest material causes defects in the device's luminous efficiency and luminous performance.
- the present invention provides a fused ring compound having a structure represented by formula (I) or formula (II):
- W is selected from O, S, C-Ar 2 or N-Ar 2 ;
- X 1 is selected from N or CR 1a
- X 2 is selected from N or CR 2a
- X 5 is selected from N or CR 5a
- X 6 is selected from N or CR 6a
- X 7 is selected from N or CR 7a ;
- R 1a , R 2a , R 5a , R 6a , R 7a are independently selected from hydrogen, halogen, cyano, alkyl, alkenyl, alkynyl, cycloalkyl, alkoxy, silane, aryl, or hetero Aryl;
- R 1 and R 2 are independently selected from hydrogen, halogen, cyano, alkyl, alkenyl, alkynyl, cycloalkyl, alkoxy, silane, aryl or heteroaryl;
- L is a single bond, C 1- C 10 substituted or unsubstituted aliphatic hydrocarbon group, C 6 -C 60 substituted or unsubstituted aryl group, or C 3 -C 30 substituted or unsubstituted heteroaryl group;
- Ar 1 and Ar 2 are independent of each other Ground is selected from hydrogen, halogen, cyano, alkyl, alkenyl, alkynyl, cycloalkyl, alkoxy, silyl, aryl or heteroaryl;
- the heteroaryl group has at least one hetero atom independently selected from nitrogen, sulfur, oxygen, phosphorus, boron, or silicon.
- R 1 and R 2 are independently selected from hydrogen, halogen, cyano, C 1 -C 30 substituted or unsubstituted alkyl, C 2 -C 30 substituted or unsubstituted alkenyl, C 2 -C 30 Substituted or unsubstituted alkynyl, C 3 -C 30 substituted or unsubstituted cycloalkyl, C 1 -C 30 substituted or unsubstituted alkoxy, C 1 -C 30 substituted or unsubstituted Silyl, C 6 -C 60 substituted or unsubstituted aryl, or C 3 -C 30 substituted or unsubstituted heteroaryl;
- Ar 1 and Ar 2 are independently selected from hydrogen, halogen, cyano, C 1 -C 30 substituted or unsubstituted alkyl, C 2 -C 30 substituted or unsubstituted alkenyl, C 2 -C 30 Substituted or unsubstituted alkynyl, C 3 -C 30 substituted or unsubstituted cycloalkyl, C 1 -C 30 substituted or unsubstituted alkoxy, C 1 -C 30 substituted or unsubstituted Silyl, C 6 -C 60 substituted or unsubstituted aryl, or C 3 -C 30 substituted or unsubstituted heteroaryl;
- R 1a , R 2a , R 5a , R 6a , R 7a are independently selected from hydrogen, halogen, cyano, C 1 -C 30 substituted or unsubstituted alkyl, C 2 -C 30 substituted or unsubstituted Alkenyl, C 2 -C 30 substituted or unsubstituted alkynyl, C 3 -C 30 substituted or unsubstituted cycloalkyl, C 1 -C 30 substituted or unsubstituted alkoxy, C 1 -C 30 substituted or unsubstituted silane, C 6 -C 60 substituted or unsubstituted aryl, or C 3 -C 30 substituted or unsubstituted heteroaryl.
- the Ar 1 and Ar 2 are independently selected from any one of the following groups; the R 1 , R 2 , R 1a , R 2a , R 5a , R 6a , R 7a Are independently selected from hydrogen or any of the following groups:
- X is nitrogen, oxygen, or sulfur
- Y is each independently nitrogen or carbon; Wherein at least one of said Y is nitrogen;
- n is an integer of 0-5, m is an integer of 0-7, p is an integer of 0-6, q is an integer of 0-8, and t is an integer of 0-7; Single or double bond;
- R 3 is each independently selected from substituted or unsubstituted phenyl or hydrogen
- Ar 3 is each independently selected from hydrogen, phenyl, fluorenyl, pentenenyl, indenyl, naphthyl, fluorenyl, fluorenyl, heptenyl, octenyl, benzodiindenyl, pinene Base, phenalenyl, phenanthryl, anthryl, triindenyl, fluoranthenyl, benzofluorenyl, benzofluorenyl, benzofluoranthenyl, phenanthryl, acetanthenyl, Benzophenanthryl, fluorenyl, 1,2-benzophenanthryl, butylphenyl, butanyl, heptenyl, fluorenyl, fluorenyl, pentaphenyl, pentaphenyl, tetraphenylene, bile Anthracenyl, spirenyl, hexenyl, erythroyl, halopheny
- the R 1 , R 2 and Ar 1 include at least one electron withdrawing group, and / or at least one electron donating group.
- the fused ring compound has a molecular structure as shown below:
- the present invention provides a method for preparing the above-mentioned fused ring compound
- intermediate 1 is obtained through a coupling reaction under the action of a catalyst; after intermediate 1 is cyclized, intermediate 2 is obtained; intermediate 2 and the compound T 3 -L-Ar 1 under the action of a catalyst through a substitution or coupling reaction to obtain a compound represented by formula (I);
- intermediate 3 is obtained through a coupling reaction under the action of a catalyst; after intermediate 3 is cyclized, intermediate 4 is obtained; intermediate After the nitro group of the body 4 is reduced, a coupling reaction is performed to obtain intermediate 5.
- the intermediate 5 and the compound T 3 -L-Ar 1 are reacted by substitution or coupling under the action of a catalyst to obtain the formula (II).
- T 1 -T 5 are independently selected from hydrogen, fluorine, chlorine, bromine or iodine.
- the present invention provides the use of the fused ring compound as an organic electroluminescent material.
- the present invention provides an organic electroluminescence device, and at least one functional layer of the organic electroluminescence device contains the above-mentioned fused ring compound.
- the functional layer is a light emitting layer.
- the light-emitting layer material includes a host material and a guest luminescent dye, and the host material is the fused ring compound.
- the fused ring compound provided by the present invention has a structure represented by formula (I) or formula (II).
- the above fused ring compounds are designed to fuse aromatic rings and heterocyclic rings in the core structure, which increases the effective conjugation in the core structure. While improving the hole performance of the fused ring compounds, it is beneficial to balance the molecular structure of the material. Electronic transmission performance.
- the HOMO level of the fused ring compound is increased, and the energy difference between the singlet and triplet states of the material molecule is reduced.
- the HOMO energy level of the light emitting layer can be made. It is more matched with the hole injection layer, which facilitates the injection of holes.
- the fused ring compound can have both the electron transport performance and the hole transport performance.
- the fused ring compound is used as the host material of the light emitting layer, the proportion of electrons and holes in the light emitting layer can be balanced and the current carrying capacity can be improved. The probability of recombination of the electrons widens the recombination region of the carriers, thereby improving the luminous efficiency.
- the fused ring compound represented by the formula (I) or the formula (II) has a high triplet (T 1 ) energy level and a high glass transition temperature.
- the high energy level can promote effective energy transfer from the host material to the guest material, reduce energy return, and improve the luminous efficiency of the OLED device.
- the fused ring compound has a high glass transition temperature, high thermal and morphological stability, and excellent film-forming properties. It is not easy to crystallize as a light-emitting layer host material, which is conducive to improving the performance and luminous efficiency of OLED devices.
- the fused ring compound provided by the present invention can introduce an electron withdrawing group (pyridine, pyrimidine, triazine) on the substituted group by adjusting R 1 , R 2 , R 1a -R 7a , Ar 1 , Ar 2 substituents. , Pyrazine, oxadiazole, thiadiazole, quinazoline, imidazole, quinoxaline, quinoline, etc.), or an electron-donating group (diphenylamine, triphenylamine, hydrazone, etc.), HOMO level distribution
- the LUMO energy level is distributed in the electron-withdrawing group, which further improves the hole transport performance and electron transport performance of the material molecules, and improves the charge transport balance.
- the space When used as the host material of the light-emitting layer, the space is further enlarged.
- the compound region of holes and electrons dilutes the exciton concentration per unit volume, preventing the triplet exciton concentration annihilation due to high concentration or triplet-triplet exciton annihilation.
- the electron donating group and the electron withdrawing group By setting the electron donating group and the electron withdrawing group, the HOMO of the fused ring compound is increased, and the LUMO energy level is reduced.
- the fused ring compound enables HOMO to distribute by distributing HOMO and LUMO on different electron-donating groups and electron-withdrawing groups.
- the effective separation of energy level and LUMO energy level reduces the singlet and triplet energy level difference ⁇ Est ( ⁇ 0.3eV) of the material molecule, which facilitates the intersystem crossing of triplet excitons to singlet excitons and promotes the main body.
- Material to object Energy transfer reduces losses during energy transfer.
- the twisted rigid molecular configuration is achieved, and the degree of intermolecular conjugation is adjusted to further increase the triplet energy level of the material molecule to obtain a small ⁇ Est.
- L and Ar 1 adjusting the donor and electron-withdrawing groups and the distance between the two, the distribution of the LUMO energy level or the HOMO energy level is more uniform, and the HOMO and LUMO energy levels are further optimized.
- the starting materials are easy to obtain, the reaction conditions are mild, and the operation steps are simple, which provides a simple and easy-to-implement preparation method for the large-scale production of the fused ring compound.
- the organic electroluminescence (OLED) device provided by the present invention includes at least one functional layer containing the above-mentioned fused ring compound, wherein the functional layer is a light-emitting layer.
- the above-mentioned fused ring compound balances the electron and hole transport performance, and increases the recombination probability of electrons and holes in the light-emitting layer.
- the fused ring compound has a high triplet energy level, which is conducive to promoting the host material to the guest material. Energy transfer to prevent energy back.
- the high glass transition temperature of the fused ring compound can prevent the molecular crystallization of the light-emitting layer material and improve the performance of the OLED device.
- the electron and hole transport performance of the fused ring compound is further improved, and the charge and hole transport in the light-emitting layer are more balanced, thereby expanding the area where holes and electrons are recombined into electrons in the light-emitting layer and reducing the excitation.
- the return of the sub to the transmission layer further improves the device efficiency.
- the above-mentioned fused ring compound uses the electron-donating group and the electron-withdrawing group to adjust the HOMO level and LUMO level of the material molecule, and reduces the overlap between the HOMO level and the LUMO level, so that the fused ring has a small ⁇ Est, which promotes Inverse intersystem crossing (RISC) for the conversion of triplet excitons to singlet excitons, thereby inhibiting the Dexter energy transfer (DET) from the host material to the luminescent dye and promoting Energy transfer reduces the energy loss in the Dexter energy transfer (DET) process, effectively reducing the efficiency roll-off of organic electroluminescent devices, and increasing the external quantum efficiency of the devices.
- RISC Inverse intersystem crossing
- FIG. 2 is a schematic structural diagram of an organic electroluminescent device in Examples 8 to 14 and Comparative Example 1 of the present invention
- 1-anode 2-hole injection layer, 3-hole transport layer, 4-light emitting layer, 5-electron transport layer, 6-electron injection layer, 7-cathode.
- This embodiment provides a fused ring compound having a structure represented by the following formula D-3:
- the method for preparing the fused ring compound represented by formula D-3 includes the following steps:
- This embodiment provides a fused ring compound having a structure represented by the following formula D-4:
- the method for preparing the fused ring compound represented by Formula D-4 specifically includes the following steps:
- This embodiment provides a fused ring compound having a structure represented by the following formula D-1:
- This embodiment provides a fused ring compound having a structure represented by the following formula D-5:
- the method for preparing the fused ring compound represented by Formula D-5 specifically includes the following steps:
- This embodiment provides a fused ring compound having a structure represented by the following formula D-6:
- the method for preparing the fused ring compound represented by Formula D-6 specifically includes the following steps:
- This embodiment provides a fused ring compound having a structure represented by the following formula D-9:
- the method for preparing the fused ring compound represented by Formula D-4 specifically includes the following steps:
- This embodiment provides a fused ring compound having a structure represented by the following formula D-8:
- the method for preparing the fused ring compound represented by Formula D-8 specifically includes the following steps:
- This embodiment provides an organic electroluminescence device. As shown in FIG. 2, it includes an anode 1, a hole injection layer 2, a hole transport layer 3, a light emitting layer 4, an electron transport layer 5, Electron injection layer 6 and cathode 7.
- the anode is selected from ITO material; the cathode 7 is selected from metal Al;
- HAT (CN) 6 has the following chemical structure:
- the material of the hole transport layer 3 is a compound having the following structure:
- the electron transport layer 5 is made of a compound with the following structure:
- the material of the electron injection layer 6 is formed by doping the compound of the structure shown below with the electron injection material LiF:
- the light-emitting layer 32 is formed by co-doping the host material and the guest luminescent dye.
- the host material is a fused ring compound (D-3)
- the guest material is a compound RD
- the host material and the guest material are doped.
- the ratio is 100: 5.
- the organic electroluminescent device is formed into the following specific structures: ITO / hole injection layer (HIL) / hole transport layer (HTL) / organic light emitting layer (fused ring compound D-3 doped compound RD) / electron transport layer (ETL) / Electron injection layer (EIL / LiF) / cathode (Al).
- HIL hole injection layer
- HTL hole transport layer
- ETL electron transport layer
- EIL Electron injection layer
- LiF cathode
- the host material in the light-emitting layer is a fused ring compound represented by formula D-3.
- the fused benzene ring and heterocyclic ring in the mother core structure increase the effective conjugation in the compound and improve the hole performance of the compound. Conducive to balancing its electronic transmission performance.
- the triplet energy level and glass transition temperature of the fused ring compound shown in D-3 are high, which can ensure the effective transfer of energy from the host material to the guest material, and prevent the molecules of the light-emitting layer material from crystallizing.
- the compound has dual dipolarity, and the HOMO level and LUMO level of the host material are respectively positioned at different electron-donating groups.
- the balance between charge and hole transport in the host material is good, the area where holes and electrons recombine into electrons in the light-emitting layer is enlarged, the exciton concentration is reduced, and the triplet state of the device is prevented-
- the triplet annihilation improves the device efficiency; the area where the carriers are recombined in the host material is far from the adjacent interface between the light-emitting layer and the hole or electron transport layer, which improves the color purity of the OLED device, and can prevent the exciton from returning to the transport layer To further improve device efficiency.
- the HOMO level and LUMO level of the fused ring compound D-3 are matched with the adjacent hole transport layer and the electron transport layer, so that the OLED device has a small driving voltage.
- the HOMO energy level and the LUMO energy level of the fused ring compound D-3 are relatively separated, and have small singlet and triplet energy level differences ( ⁇ E ST ), which promotes the intersystem migration of triplet excitons to singlet excitons; another
- the high inverse intersystem crossing (RISC) rate of the transition from the triplet state T1 to the singlet state S1 of the host material can inhibit the Dexter energy transfer (DET) from the host material to the luminescent dye and promote the Energy transfer reduces exciton loss of Dexter energy transfer (DET), avoids the efficiency roll-off effect of organic electroluminescent devices, and improves the luminous efficiency of the devices.
- the host material of the light-emitting layer may also be selected from any of the fused ring compounds represented by the formula (D-1) to the formula (D-24).
- This embodiment provides an organic electroluminescence device, which is different from the organic electroluminescence device provided in Embodiment 8 only in that the main material of the light-emitting layer is a fused heterocyclic compound having the structure shown below:
- This embodiment provides an organic electroluminescence device, which is different from the organic electroluminescence device provided in Embodiment 8 only in that the main material of the light-emitting layer is a fused heterocyclic compound having the structure shown below:
- This embodiment provides an organic electroluminescence device, which is different from the organic electroluminescence device provided in Embodiment 8 only in that the main material of the light-emitting layer is a fused heterocyclic compound having the structure shown below:
- This embodiment provides an organic electroluminescence device, which is different from the organic electroluminescence device provided in Embodiment 8 only in that the main material of the light-emitting layer is a fused heterocyclic compound having the structure shown below:
- This embodiment provides an organic electroluminescence device, which is different from the organic electroluminescence device provided in Embodiment 8 only in that the main material of the light-emitting layer is a fused heterocyclic compound having the structure shown below:
- This embodiment provides an organic electroluminescence device, which is different from the organic electroluminescence device provided in Embodiment 8 only in that the main material of the light-emitting layer is a fused heterocyclic compound having the structure shown below:
- This comparative example provides an organic electroluminescence device, which is different from the organic electroluminescence device provided in Example 7 only in that 4,4'-bis (9-carbazole) biphenyl (abbreviation: CBP).
- DSC differential scanning calorimeter
- the organic electroluminescent devices provided in Comparative Examples 8-14 and Comparative Example 1 were tested. The results are shown in Table 2.
- the luminous efficiency of the OLED devices provided in Example 8-14 was higher than that in Comparative Example 1.
- the driving voltage is lower than that of the OLED device in Comparative Example 1, indicating that the use of the fused heterocyclic compound provided in the present invention as the host material of the light emitting layer of the OLED device can effectively improve the light emitting efficiency of the device and reduce the driving voltage of the device .
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Abstract
Description
稠合杂环化合物 | 式D-3 | 式D-4 | 式D-1 | 式D-5 | 式D-6 | 式D-9 | 式D-8 |
玻璃态转变温度(℃) | 170 | 172 | 168 | 169 | 170 | 175 | 171 |
T1(eV) | 2.68 | 2.63 | 2.71 | 2.64 | 2.70 | 2.64 | 2.62 |
S1-T1(eV) | 0.15 | 0.16 | 0.25 | 0.18 | 0.20 | 0.14 | 0.15 |
Claims (10)
- 一种稠环化合物,其特征在于,具有如式(I)或式(II)所示的结构:W选自O、S、C-Ar 2或N-Ar 2;X 1选自N或C-R 1a,X 2选自N或C-R 2a,X 5选自N或C-R 5a,X 6选自N或C-R 6a,X 7选自N或C-R 7a;R 1a、R 2a、R 5a、R 6a、R 7a彼此独立地选自氢、卤素、氰基、烷基、烯基、炔基、环烷基、烷氧基、硅烷基、芳基或杂芳基;R 1、R 2彼此独立地选自氢、卤素、氰基、烷基、烯基、炔基、环烷基、烷氧基、硅烷基、芳基或杂芳基;L为单键、C 1-C 10的取代或未取代的脂肪烃基、C 6-C 60的取代或未取代的芳基,或者C 3-C 30的取代或未取代的杂芳基;Ar 1、Ar 2彼此独立地选自氢、卤素、氰基、烷基、烯基、炔基、环烷基、烷氧基、硅烷基、芳基或杂芳基;所述杂芳基具有至少一个独立地选自氮、硫、氧、磷、硼或硅的杂原子。
- 根据权利要求1所述的稠环化合物,其特征在于,R 1、R 2彼此独立地选自氢、卤素、氰基、C 1-C 30的取代或未取代的烷基、C 2-C 30的取代或未取代的烯基、C 2-C 30的取代或未取代的炔基、C 3-C 30的取代或未取代的环烷基、C 1-C 30的取代或未取代的烷氧基、C 1-C 30的取代或未取代的硅烷基、C 6-C 60的取代或未取代的芳基,或者C 3-C 30的取代或未取代的杂芳基;Ar 1、Ar 2彼此独立地选自氢、卤素、氰基、C 1-C 30的取代或未取代的烷基、C 2-C 30的取代或未取代的烯基、C 2-C 30的取代或未取代的炔基、C 3-C 30的取代或未取代的环烷基、C 1-C 30的取代或未取代的烷氧基、C 1-C 30的取代或未取代的硅烷基、C 6-C 60的取代或未取代的芳基,或者C 3-C 30的取代或未取代 的杂芳基;R 1a、R 2a、R 5a、R 6a、R 7a彼此独立地选自氢、卤素、氰基、C 1-C 30的取代或未取代的烷基、C 2-C 30的取代或未取代的烯基、C 2-C 30的取代或未取代的炔基、C 3-C 30的取代或未取代的环烷基、C 1-C 30的取代或未取代的烷氧基、C 1-C 30的取代或未取代的硅烷基、C 6-C 60的取代或未取代的芳基,或者C 3-C 30的取代或未取代的杂芳基。
- 根据权利要求1或2所述的稠环化合物,其特征在于,所述Ar 1、Ar 2彼此独立地选自下述任一基团;所述R 1、R 2、R 1a、R 2a、R 5a、R 6a、R 7a彼此独立地选自氢或下述任一基团:R 3各自独立地选自取代的或未取代的苯基或氢;Ar 3各自独立地选自氢、苯基、蒄基、戊搭烯基、茚基、萘基、薁基、芴基、庚搭烯基、辛搭烯基、苯并二茚基、苊烯基、非那烯基、菲基、蒽基、三茚基、荧蒽基、苯并芘基、苯并苝基、苯并荧蒽基、醋菲基、醋蒽烯基、9,10-苯并菲基、芘基、1,2-苯并菲基、丁苯基、丁省基、七曜烯基、苉基、苝基、五苯基、并五苯基、亚四苯基、胆蒽基、螺烯基、己芬基、玉红省基、晕苯基、联三萘基、庚芬基、皮蒽基、卵苯基、心环烯基、蒽嵌蒽基、三聚茚基、吡喃基、苯并吡喃基、呋喃基、苯并呋喃基、异苯并呋喃基、氧杂蒽基、噁唑啉基、二苯并呋喃基、迫呫吨并呫吨基、噻吩基、噻吨基、噻蒽基、吩噁噻基、硫茚基、异硫茚基、萘并噻吩基、二苯并噻吩基、苯并噻吩基、吡咯基、吡唑基、碲唑基、硒唑基、 噻唑基、异噻唑基、噁唑基、噁二唑基、呋咱基、吡啶基、吡嗪基、嘧啶基、哒嗪基、三嗪基、吲嗪基、吲哚基、异吲哚基、吲唑基、嘌呤基、喹嗪基、异喹啉基、咔唑基、芴并咔唑基、吲哚并咔唑基、咪唑基、萘啶基、酞嗪基、喹唑啉基、苯二氮卓基、喹喔啉基、噌啉基、喹啉基、蝶啶基、菲啶基、吖啶基、呸啶基、菲咯啉基、吩嗪基、咔啉基、吩碲嗪基、吩硒嗪基、吩噻嗪基、吩噁嗪基、三苯二噻嗪基、氮杂二苯并呋喃基、三苯二噁嗪基、蒽吖嗪基、苯并噻唑基、苯并咪唑基、苯并噁唑基、苯并异噁唑基或苯并异噻唑基。
- 根据权利要求1-3任一项所述的稠环化合物,其特征在于,所述R 1、R 2和Ar 1中包括至少一个吸电子基团,和/或至少一个给电子基团。
- 一种如权利要求1-5任一项所述稠环化合物的制备方法,其特征在于,所述式(I)所示化合物的合成步骤如下所示:以式(A)所示的化合物和式(B)所示的化合物为起始原料,在催化剂作用下经偶联反应得到中间体1;中间体1环化后,得到中间体2;中间体2与化合物T 3-L-Ar 1在催化剂作用下,经取代或偶联反应,得到式(I)所示的化合物;所述式(I)所示化合物的合成路径如下所示:所述式(II)所示化合物的合成步骤如下所示:以式(C)所示的化合物和式(E)所示的化合物为起始原料,在催化剂作用下,经偶联反应得到中间体3;中间体3环化后,得到中间体4;中间体4的硝基被还原后,经偶联反应,得到中间体5,中间体5与化合物T 3-L-Ar 1在催化剂作用下,经取代或偶联反应,得到式(II)所示的化合物;所述式(II)所示化合物的合成路径如下所示:其中,T 1-T 5彼此独立地选自氢、氟、氯、溴或碘。
- 一种权利要求1-5任一项所述的稠环化合物作为有机电致发光材料的用途。
- 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的至少有一个功能层中含有权利要求1-5任一项所述的稠环化合物。
- 根据权利要求8所述的有机电致发光器件,其特征在于,所述功能层为发光层。
- 根据权利要求9所述的有机电致发光器件,其特征在于,所述发光层材料包括主体材料和客体发光染料,所述主体材料为所述稠环化合物。
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