WO2020052194A1 - 一种稠环苯并噻二唑基非富勒烯受体材料及其制备方法和应用 - Google Patents
一种稠环苯并噻二唑基非富勒烯受体材料及其制备方法和应用 Download PDFInfo
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- WO2020052194A1 WO2020052194A1 PCT/CN2019/074045 CN2019074045W WO2020052194A1 WO 2020052194 A1 WO2020052194 A1 WO 2020052194A1 CN 2019074045 W CN2019074045 W CN 2019074045W WO 2020052194 A1 WO2020052194 A1 WO 2020052194A1
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- 0 N#CC(C#N)=C(*1)c2c[s]cc2C1=O Chemical compound N#CC(C#N)=C(*1)c2c[s]cc2C1=O 0.000 description 8
- KUAMQJUJZXTNPL-UHFFFAOYSA-N N#CC(C#N)=C(C1)c(cncc2)c2C1=O Chemical compound N#CC(C#N)=C(C1)c(cncc2)c2C1=O KUAMQJUJZXTNPL-UHFFFAOYSA-N 0.000 description 1
- UYSZYWIPEGBWIR-UHFFFAOYSA-N N#CC(C#N)=C(C1)c2cc(cccc3)c3cc2C1=O Chemical compound N#CC(C#N)=C(C1)c2cc(cccc3)c3cc2C1=O UYSZYWIPEGBWIR-UHFFFAOYSA-N 0.000 description 1
- TVHJQDZIVZWLEN-UHFFFAOYSA-N N#CC(C#N)=C(C1O)c2ccncc2C1=O Chemical compound N#CC(C#N)=C(C1O)c2ccncc2C1=O TVHJQDZIVZWLEN-UHFFFAOYSA-N 0.000 description 1
- LRGHEMSMPXPJKX-UHFFFAOYSA-N N#CC(C#N)=C(C1[O-2])c(cccc2)c2C1=C(C#N)C#N Chemical compound N#CC(C#N)=C(C1[O-2])c(cccc2)c2C1=C(C#N)C#N LRGHEMSMPXPJKX-UHFFFAOYSA-N 0.000 description 1
- IACZBFDSOFBHKV-UHFFFAOYSA-N N#CC(C#N)=C(CC1=O)c2c1c(cccc1)c1cc2 Chemical compound N#CC(C#N)=C(CC1=O)c2c1c(cccc1)c1cc2 IACZBFDSOFBHKV-UHFFFAOYSA-N 0.000 description 1
- QWCNUWDLYRMQNA-UHFFFAOYSA-N N#CC(C#N)=C(CC1=O)c2c3c1cccc3ccc2 Chemical compound N#CC(C#N)=C(CC1=O)c2c3c1cccc3ccc2 QWCNUWDLYRMQNA-UHFFFAOYSA-N 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D513/00—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for in groups C07D463/00, C07D477/00 or C07D499/00 - C07D507/00
- C07D513/22—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and sulfur atoms as the only ring hetero atoms, not provided for in groups C07D463/00, C07D477/00 or C07D499/00 - C07D507/00 in which the condensed system contains four or more hetero rings
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- H—ELECTRICITY
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- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/615—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene
- H10K85/626—Polycyclic condensed aromatic hydrocarbons, e.g. anthracene containing more than one polycyclic condensed aromatic rings, e.g. bis-anthracene
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
- H10K85/60—Organic compounds having low molecular weight
- H10K85/649—Aromatic compounds comprising a hetero atom
- H10K85/657—Polycyclic condensed heteroaromatic hydrocarbons
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
Definitions
- the invention relates to an organic solar cell acceptor material, in particular to a fused ring benzothiadiazole-based non-fullerene acceptor material, and also relates to a preparation method and application thereof in an organic solar cell, and belongs to an organic solar cell. Material preparation technology field.
- the first object of the present invention is to provide a fused ring benzothiadiazolyl group with good film formation and high photoelectric conversion efficiency.
- Non-fullerene acceptor material is to provide a fused ring benzothiadiazolyl group with good film formation and high photoelectric conversion efficiency.
- a second object of the present invention is to provide a method for preparing a fused ring benzothiadiazolyl non-fullerene acceptor material with mild conditions and simple operation.
- a third object of the present invention is to provide an application of a fused ring benzothiadiazole-based non-fullerene acceptor material, and the fused ring benzothiadiazole-based non-fullerene acceptor material is more complementary to a donor material.
- Absorption having an energy level more compatible with the donor material, and having a high and balanced carrier mobility, can be used to prepare organic solar cells with high short-circuit current and energy conversion efficiency.
- the present invention provides a fused ring benzothiadiazole non-fullerene acceptor material, which has the structure of Formula 1:
- R 1 is a C 1 -C 20 alkyl group
- Ar is a thiophene group, a thiophene derivative group, a dithiophene group, a dithiophene derivative group, a trithiophene group, a benzotrithiophene derivative group, a benzodithiophene group, a benzodithiophene Derivative group, pyrrolodithiophene group, pyrrolodithiophene derivative group, pyrrolodiphenyl group, pyrrolodiphenyl derivative group, pentanedithiophene group, pentanedithiophene Derivative group, pentanediphenyl group or pentanediphenyl derivative group; when Ar is selected from thiophene derivative group, it means that the thiophene ring contains some common substituent groups, such as C 1 ⁇ C 20 alkyl group, C 1 ⁇ C 20 alkoxy group, carbonyl group, ester group (such as C 1 ⁇ C 20 alk
- EG is any of the following groups: (the dotted line is the connection position)
- R 2 is a hydrogen atom, a halogen substituent (the halogen substituent is fluorine, chlorine, bromine, or iodine), a C 1 to C 20 alkyl group, a C 1 to C 20 alkoxy group, a carbonyl group, or an ester group (such as C 1 ⁇ C 20 alkoxyacyl) or cyano.
- the fused ring benzothiadiazole non-fullerene acceptor material of the present invention includes a fused ring benzothiadiazole core and an electron withdrawing end group.
- the fused ring benzothiadiazole core has a nitrogen bridge trapezoidal fused ring structure. Electron-withdrawing end groups are connected at both ends of the central core.
- the fused ring benzothiadiazole non-fullerene acceptor material of the present invention uses a fused ring benzothiadiazole central core unit, and the following structural design is performed on the fused ring benzothiadiazole central unit: (1) use The nitrogen atom connects the benzothiadiazole to the conjugated group. The lone pair of electrons of the nitrogen atom participates in the conjugation, which increases the electron cloud density of the conjugated system and the electron donating ability of the central nucleus.
- Condensed polycyclic non fullerene acceptor material of the present invention have good solubility, easily processed into a film, has a strong visible-near IR absorptivity performance and high charge mobility ( ⁇ 10 -4 cm 2 ⁇ V - 1 ⁇ s -1 ). It can be used to prepare solar cell materials with high short-circuit current and energy conversion efficiency. It is a class of potential acceptor materials. Compared with the fullerene and its derivative materials in the prior art, it can regulate energy levels, has good film-forming properties, and has high photoelectric conversion efficiency. Its finished products can be made into flexible solar cell panels. High efficiency and low price.
- Ar is any one of the following groups (these groups have common properties and similar chemical properties, and the main body is a conjugated system formed by thiophene and / or benzene rings, and the conjugated system may include some Common substituent groups): (the dotted line is the connection position)
- R 3 is C 1 to C 20 alkyl, C 1 to C 20 alkoxy, carbonyl, ester (preferably C 1 to C 20 alkoxyacyl), phenyl, substituted phenyl (preferably substituted) Phenyl contains at least one C 1 to C 20 alkyl group and / or C 1 to C 20 alkoxy group, and most preferably contains one C 1 to C 20 alkyl group or C 1 to C 20 alkoxy group) , Thienyl, or substituted thienyl (preferably substituted thienyl includes at least one C 1 to C 20 alkyl group and / or C 1 to C 20 alkoxy group, most preferably an C 1 to C 20 alkyl group Or C 1 to C 20 alkoxy).
- the invention also provides a method for preparing a fused ring benzothiadiazole non-fullerene acceptor material, which comprises the following steps:
- Compound B is obtained by stille coupling reaction between 4,7-dibromo-5,6-dinitrobenzothiadiazole and compound A:
- the haloalkane is R 1 X;
- R 1 is a C 1 to C 20 alkyl group
- X is halogen
- the EG ketone is any one of the following structures (these ketone compounds are conventional compounds that can be purchased):
- R 2 is a hydrogen atom, a halogen, a C 1 to C 20 alkyl group, a C 1 to C 20 alkoxy group, a carbonyl group, an ester group (such as a C 1 to C 20 alkoxyacyl group), or a cyano group.
- the conditions of the stille coupling reaction are: the solvent is tetrahydrofuran, the catalyst is bistriphenylphosphine palladium dichloride, and the amount of the catalyst added is 0.01% to 10% of the molar amount of Compound A;
- the molar ratio of dibromo-5,6-dinitrobenzothiadiazole to compound A is 1: 2.2 to 3.5; the reaction is refluxed at a temperature of 80 to 100 ° C. for 24 to 48 hours.
- the conditions of the condensation ring-closure reaction are: the solvent is o-dichlorobenzene, and the catalyst is triethyl phosphite; the molar amount of the catalyst and the compound B is 30-50: 1; and the reflux is performed at a temperature of 160-180 ° C The reaction takes 16 to 20 hours.
- the conditions for the nucleophilic substitution reaction are: using dimethyl sulfoxide as a solvent, potassium hydroxide as a neutralizing agent, and a molar ratio of the halogenated alkane to the compound C is 3 to 5: 1; The reaction was carried out at reflux for 15 to 24 hours.
- the conditions of the Vilsmeier-Haack reaction are: the solvent is N, N-dimethylformamide, phosphorus oxychloride is a formylating agent, and the molar ratio of compound D to phosphorus oxychloride is 1:15 -20; reflux reaction at 80-105 ° C for 8-12 hours.
- the conditions of the Knoevenagel reaction are: chloroform is the solvent, pyridine is the acid binding agent, the molar ratio of the compound E to the EG ketone is 1: 5-12, and the reaction is refluxed at a temperature of 60-70 ° C for 12-16 hours .
- the invention also provides an application of a fused ring benzothiadiazole non-fullerene acceptor material, which is used as an acceptor material of an organic solar cell.
- a fused ring benzothiadiazole-based non-fullerene acceptor material and an electron donor material are used to make a photoelectric conversion layer for an organic solar cell device.
- the specific preparation process of the photoelectric conversion layer is: mixing a fused ring benzothiadiazolyl non-fullerene acceptor material with an electron donor material, adding a solvent to dissolve, and obtaining a slurry, which is prepared by coating the conductive glass with The thin film is then prepared for an organic solar cell device.
- the solvent at least one of trichloromethane, o-dichlorobenzene and tetrahydrofuran is generally used.
- the fused ring benzothiadiazolyl non-fullerene acceptor material can be dissolved in conventional organic solvents and has good processing properties.
- the molar ratio of the fused ring benzothiadiazolyl non-fullerene acceptor material to the electron donor material is 1 to 1.5: 1.
- the electron donor material is PCE10, PCE12, P3HT, and other organic electron donor materials.
- the fused ring benzothiadiazole non-fullerene acceptor material of the present invention has a special molecular structure, and its main body includes a fused ring benzothiadiazole core and an electron withdrawing end group, and a fused ring benzothiadiazole core. It is a nitrogen bridge trapezoidal fused ring structure, with electron-withdrawing end groups connected at both ends of the central core, and also modified with an alkane or alkoxy chain.
- the fused ring benzothiadiazole central core unit connects the benzothiadiazole to the conjugated group through the nitrogen atom, and the lone pair of electron pairs of the nitrogen atom participates in the conjugation, which increases the electron cloud density of the conjugated system and improves the supply of the central core Electronic capabilities.
- the introduction of an alkyl chain on the nitrogen atom can not only increase the flatness of the central core region, thereby potentially improving the charge mobility, but also further improve the material dissolution performance.
- the simultaneous introduction of electron withdrawing at both ends of the core unit of the fused ring benzothiadiazole can effectively broaden the absorption and absorption coefficient of the material.
- the fused ring non-fullerene acceptor material of the present invention has good solubility, is easy to be processed into a film, has strong visible and near-infrared light absorption performance and a high charge mobility ( ⁇ 10 -4 cm 2 ⁇ V -1 ⁇ S -1 ), which can be used to prepare solar cell materials with high short-circuit current and energy conversion efficiency, is a class of potential acceptor materials.
- the cyclic benzothiadiazole non-fullerene acceptor material of the present invention can regulate the energy level, has good film-forming properties, and has higher photoelectric conversion. Efficiency, the finished product can be made into a flexible solar panel.
- the cyclobenzothiadiazole non-fullerene acceptor material of the present invention has mild synthesis conditions and low price, which is beneficial to realize large-scale production.
- FIG. 1 is a synthetic roadmap of the acceptor material ZYQ3 prepared in Example 1.
- FIG. 1 is a synthetic roadmap of the acceptor material ZYQ3 prepared in Example 1.
- FIG. 2 is 1 HNMR of the acceptor material ZYQ3 prepared in Example 1.
- FIG. 3 is a 13 C NMR of the acceptor material ZYQ3 prepared in Example 1.
- FIG. 5 is a current-voltage (J-V) curve diagram of an organic solar cell prepared in Example 1.
- FIG. 6 is an external quantum efficiency (EQE) curve diagram of the organic solar cell prepared in Example 1.
- FIG. 6 is an external quantum efficiency (EQE) curve diagram of the organic solar cell prepared in Example 1.
- FIG. 7 is a synthetic roadmap of the acceptor material ZYQ4 prepared in Example 2.
- FIG. 8 is a 1 HNMR of the acceptor material ZYQ4 prepared in Example 2.
- FIG. 9 is a 13 CNMR of the acceptor material ZYQ4 prepared in Example 2.
- FIG. 11 is a cyclic voltammogram of the acceptor material ZYQ4 prepared in Example 2.
- FIG. 12 is a current-voltage (J-V) curve diagram of an organic solar cell prepared in Example 2.
- J-V current-voltage
- the dichloromethane and petroleum ether used in the following examples were purchased from Tianjin Hengxing Chemical Reagent Factory; 4,7-dibromobenzothiadiazole, bistriphenylphosphine palladium dichloride, anhydrous N, N-di Methylformamide, phosphorus oxychloride, triethylphosphite, and anhydrous tetrahydrofuran were purchased from Saen Chemical (Shanghai) Co., Ltd .; 3- (dicyanomethylene) indone was purchased from Suzhou Nakai Technology Co., Ltd. . The reagents purchased above were used directly without further treatment.
- acceptor material ZYQ3 In a 250 ml round bottom flask, compound E (0.102 g, 0.10 mmol) and 3- (dicyanomethylene) indone (0.20 g, 1.00 mmol) were dissolved in 45 ml of chloroform. 1 ml of pyridine was added, and the mixture was reacted under reflux for 12 hours under the protection of argon gas, cooled to room temperature, poured into 200 ml of anhydrous methanol, filtered by suction to obtain a crude product, and separated and purified by silica gel column chromatography to obtain a dark blue solid (0.10 g) , Is the acceptor material ZYQ3.
- acceptor material ZYQ4 In a 250 ml round-bottomed flask, compound E (0.154 g, 0.15 mmol) and 3- (dicyanomethylene) indone (0.345 g, 1.50 mmol) were dissolved in 45 ml of chloroform and added 1 ml of pyridine, the mixture was refluxed under the protection of argon for 12 hours, cooled to room temperature, poured into 200 ml of anhydrous methanol, filtered by suction to obtain the crude product, and purified by silica gel column chromatography to obtain a dark blue solid (0.140 g), That is the acceptor material ZYQ4.
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Abstract
Description
Claims (9)
- 根据权利要求2所述的稠环苯并噻二唑非富勒烯受体材料,其特征在于:所述取代苯基包含至少一个C 1~C 20的烷基和/或C 1~C 20的烷氧基;所述取代噻吩基包含至少一个C 1~C 20的烷基和/或C 1~C 20的烷氧基。
- 权利要求1~3任一项所述的一种稠环苯并噻二唑非富勒烯受体材料的制备方法,其特征在于:包括以下步骤:1)将4,7-二溴-5,6-二硝基苯并噻二唑和化合物A通过stille偶联反应得到化合物B:2)化合物B进行缩合闭环反应得到化合物C:3)化合物C与卤代烷烃通过亲核取代反应得到化合物D;所述卤代烷烃为R 1X;其中,R 1为C 1~C 20的烷基;X为卤素;4)化合物D通过Vilsmeier-Haack反应得到化合物E;5)化合物E和EG酮通过Knoevenagel反应,即得;所述EG酮为以下结构中任意一种:其中,R 2为氢原子、卤素、C 1~C 20的烷基、C 1~C 20的烷氧基、羰基、酯基或氰基。
- 根据权利要求4所述的一种苯并噻二唑稠环化合物的制备方法,其特征在于:所述stille偶联反应的条件为:溶剂为四氢呋喃,催化剂为双三苯基膦二氯化钯,催化剂的加入量为化合物A摩尔量的0.01%~10%;4,7-二溴-5,6-二硝基苯并噻二唑和化合物A的摩尔比为1:2.2~3.5;在80~100℃温度下回流反应24~48小时;所述缩合闭环反应的条件为:溶剂为邻二氯苯,催化剂为亚磷酸三乙酯;催化剂与化合物B的摩尔量为30~40:1;在160~180℃温度下回流反应16~20小时;所述亲核取代反应的条件为:以二甲基亚砜为溶剂,氢氧化钾作为中和剂,卤代烷烃与化合物C的摩尔比为3~6:1;在80~100℃温度下回流反应15~24小时;所述Vilsmeier-Haack反应的条件为:溶剂为N,N-二甲基甲酰胺,三氯氧磷为甲酰化试剂,化合物D与三氯氧磷的摩尔比为1:15~25;在80~105℃温度下回流反应8~12小时;所述Knoevenagel反应的条件为:氯仿为溶剂,吡啶为缚酸剂,化合物E与EG酮的摩尔比为1:5~12;在60~70℃温度下回流反应12~16小时。
- 权利要求1~3任一项所述的一种稠环苯并噻二唑非富勒烯受体材料的应用,其特征在于:作为有机太阳能电池受体材料应用。
- 根据权利要求5所述的一种稠环苯并噻二唑基非富勒烯受体材料的应用,其特征在于:将稠环苯并噻二唑基非富勒烯受体材料与电子给体材料制成光电转换层用于有机太阳能电池器件。
- 根据权利要求7所述的一种稠环苯并噻二唑基非富勒烯受体材料的应用,其特征在于:稠环苯并噻二唑基非富勒烯受体材料与电子给体材料的摩尔比为1~1.5:1。
- 根据权利要求8所述的一种稠环苯并噻二唑基非富勒烯受体材料的应用,其特征在于:所述电子给体材料为PCE10、PCE12、P3HT及其他有机电子给体材料中至少一种。
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