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Benzodifuran containing chlorine and pyrazine copolymer photovoltaic material, preparation method and application

A technology of chlorobenzodifuran and benzodifuran, applied in the field of photovoltaic materials containing chlorobenzodifuran and pyrazine copolymer, can solve the problems of limited application and insufficient photoelectric conversion efficiency, and achieve a wide absorption spectrum , good photoelectric conversion efficiency, good processability effect

Inactive Publication Date: 2019-10-18
HUNAN UNIV OF ARTS & SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The photoelectric conversion efficiency of this compound is not high enough, which limits the application of such substances

Method used

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  • Benzodifuran containing chlorine and pyrazine copolymer photovoltaic material, preparation method and application
  • Benzodifuran containing chlorine and pyrazine copolymer photovoltaic material, preparation method and application
  • Benzodifuran containing chlorine and pyrazine copolymer photovoltaic material, preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] 4,8-bis(4-chloro-5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b:4,5-b']difuran-2,5-diiso Preparation of Octyloxy-3,6-bis(furan-2-methylene)pyrazine (P1)

[0054] Specific steps are as follows:

[0055] ①Synthesis of Compound 1

[0056] 1,4-Diacetylpiperazine-2,5-dione (1.19g, 6mmol) and 5-bromo-2 furfural (2.63g, 15mmol) were placed in a 50ml single-necked round bottom flask, and then 28ml DMF, under the protection of nitrogen, heat and stir, raise the temperature to 120°C, add 3.32ml of triethylamine through a syringe, after the completion, the reaction system turns from colorless to red immediately, continue to react for 12 hours, after the completion of the reaction, cool to room temperature, produce The yellow precipitate was collected by filtration, washed with acetone, and the product was collected to obtain the target product (2.16 g, yield: 84%), which was directly carried out to the next reaction without further purification.

[0057] The nuclear magnetic resonan...

Embodiment 2

[0072] 4,8-bis(4-chloro-5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b:4,5-b']difuran-2,5-dioctyl Preparation of Oxy-3,6-bis(furan-2-methylene)pyrazine (P2)

[0073] The synthetic method of compound 2 is the same as the synthetic method of compound 2 in embodiment 1, and brominated alkane adopts brominated n-octane, and concrete steps are as follows:

[0074] ①Synthesis of Compound 1

[0075] 1,4-Diacetylpiperazine-2,5-dione (1.19g, 6mmol) and 5-bromo-2 furfural (2.63g, 15mmol) were placed in a 50ml single-necked round bottom flask, and then 28ml DMF, under the protection of nitrogen, heat and stir, raise the temperature to 120°C, add 3.32ml of triethylamine through a syringe, after the completion, the reaction system turns from colorless to red immediately, continue to react for 12 hours, after the completion of the reaction, cool to room temperature, produce The yellow precipitate was collected by filtration, washed with acetone, and the product was collected to obtain the targ...

Embodiment 3

[0091] 4,8-bis(4-chloro-5-(2-ethylhexyl)thiophen-2-yl)benzo[1,2-b:4,5-b']difuran-2,5-bis( Preparation of 2-octyldodecyloxy)-3,6-bis(furan-2-methylene)pyrazine (P3)

[0092] The synthetic method of compound 2 is the same as the synthetic method of compound 2 in embodiment 1, and brominated alkane adopts brominated 2-octyl-dodecane, and concrete steps are as follows:

[0093] ①Synthesis of Compound 1

[0094] 1,4-Diacetylpiperazine-2,5-dione (1.19g, 6mmol) and 5-bromo-2 furfural (2.63g, 15mmol) were placed in a 50ml single-necked round bottom flask, and then 28ml DMF, under the protection of nitrogen, heat and stir, raise the temperature to 120°C, add 3.32ml of triethylamine through a syringe, after completion, the reaction system turns from colorless to red immediately, continue to react for 12h, after the reaction is completed, cool to room temperature, and produce yellow The precipitate was collected by filtration, washed with acetone, and the product was collected to obtai...

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Abstract

The invention discloses a benzodifuran containing chlorine and pyrazine copolymer photovoltaic material, a preparation method and an application. A structural formula is as shown in the specification,wherein R is an alkyl group. The copolymer is an electron donor material, and is applied to a polymer solar battery, and the material has wide absorption in the visible region, a relatively low HOMOlevel, a relatively narrow band gap, and relatively high photoelectric conversion efficiency.

Description

technical field [0001] The invention relates to the technical field of polymer photovoltaic materials, in particular to a photovoltaic material containing chlorobenzodifuran and pyrazine copolymer, a preparation method and application. Background technique [0002] With the increasingly serious phenomenon of global warming and the depletion of fossil energy (coal, oil and natural gas, etc.), countries all over the world have adopted strict controls on carbon dioxide emissions. Therefore, solar energy, as a renewable clean energy, has been paid more and more attention by the global scientific and industrial circles. As a new type of solar cell, polymer solar cells have achieved rapid development in the past two decades due to their unique advantages of light weight and large-area flexible devices that can be printed, and have become the current global energy field. One of the hot spots. [0003] Research progress of polymer solar cell materials, Li Yongxi et al., Journal of...

Claims

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Application Information

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IPC IPC(8): C08G61/12H01L51/46
CPCC08G61/125C08G61/122C08G2261/124C08G2261/414C08G2261/145C08G2261/146C08G2261/1424C08G2261/91H10K85/111Y02E10/549
Inventor 刘波王晓波王钢刘骏何敏胡霞陈远道王菲菲
Owner HUNAN UNIV OF ARTS & SCI
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