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Multi-fused-ring conjugated macromolecule, preparation method and applications thereof

A macromolecular and conjugated technology, applied in the field of solar cells, can solve the problems of weak visible light absorption, difficult energy level regulation, complex and cumbersome purification process, etc., and achieve the effect of strong light absorption and high charge transport performance

Active Publication Date: 2018-06-15
PEKING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PCBM also has many disadvantages, such as weak visible light absorption, difficult energy level regulation, complicated and cumbersome purification process, etc.

Method used

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  • Multi-fused-ring conjugated macromolecule, preparation method and applications thereof
  • Multi-fused-ring conjugated macromolecule, preparation method and applications thereof
  • Multi-fused-ring conjugated macromolecule, preparation method and applications thereof

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preparation example Construction

[0073] The present invention also provides a method for preparing the above-mentioned poly-fused-ring conjugated macromolecules, the method comprising:

[0074] In the presence of a basic compound and in an organic solvent, a compound represented by the following formula (2) is subjected to a dehydration condensation reaction with a compound represented by the formula (a) to obtain a compound represented by the formula (1F); wherein,

[0075] Formula (2) Formula (a)

[0076] In this method, the group R 1 -R 6 As described above, the present invention will not be repeated here.

[0077] Wherein, the compound shown in formula (2) can be selected according to the structure of the poly-fused-ring conjugated macromolecules above, preferably, the compound shown in formula (2) is one or more of the following formulas:

[0078] Formula (2-5) Formula (2-7)

[0079] Formula (2-9):

[0080] Formula (2-11):

[0081] Specific examples of the compound represented by form...

preparation example 1

[0135] This preparation example is used to illustrate the preparation method of the compound represented by the formula (2-7-2).

[0136]

[0137] As shown in the above reaction formula, the compound of formula IT (102 mg, 0.1 mmol; purchased from Suzhou Nakai Technology Co., Ltd.) and tetrahydrofuran (20 mL) were added to the reaction vessel, and argon was passed through, and stirred at -78 °C for 1 h . Slowly add n-butyllithium (0.19mL, 0.3mmol, 1.6M) dropwise, stir at -78°C for 2h, add N,N-dimethylformamide (36.6mg, 0.5mmol), and slowly return the reaction product to At room temperature (about 25°C), stirred overnight (about 12h). Then add water (0.2mL) to quench, use saturated brine and dichloromethane for extraction, dry with magnesium sulfate, spin dry, and the obtained precipitate is chromatographed on silica gel column (use 200-300 mesh silica gel, the eluent is the volume ratio 2:1 petroleum ether / dichloromethane) for chromatographic separation to obtain a bright...

preparation example 2

[0139] This preparation example is used to illustrate the preparation method of the compound represented by the formula (2-7-3).

[0140]

[0141] As shown in the above reaction formula, the compound represented by the formula IT-Th (104 mg, 0.1 mmol; purchased from Schollen Organic Photoelectric Technology (Beijing) Co., Ltd.) and tetrahydrofuran (20 mL) were added to the reaction vessel, and argon was passed through. Stir at -78°C for 1 h. Slowly add n-butyllithium (0.2mL, 0.32mmol, 1.6M) dropwise, stir at -78°C for 2h, add N,N-dimethylformamide (32.9mg, 0.45mmol), and slowly return the reaction product to At room temperature (about 25°C), stirred overnight (about 12h). Then add water (0.2mL) to quench, use saturated brine and dichloromethane for extraction, dry with magnesium sulfate, spin dry, and the obtained precipitate is chromatographed on silica gel column (use 200-300 mesh silica gel, the eluent is the volume ratio 1.5:1 petroleum ether / dichloromethane) for chro...

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Abstract

The present invention relates to the field of solar cells, particularly to a multi-fused-ring conjugated macromolecule, a preparation method and applications thereof, wherein the multi-fused-ring conjugated macromolecule is one of a compound represented by the following formula (1F) and a compound represented by the following formula (1). According to the present invention, the multi-fused-ring conjugated macromolecule has advantages of strong light absorption, high charge transport performance and suitable electron energy level, and can be used as an electron donor or an electron acceptor material so as to prepare solar cells. The formulas (1F) and (1) are defined in the specification.

Description

technical field [0001] The present invention relates to the field of solar cells, in particular to a poly-fused-ring conjugated macromolecule and a preparation method and application thereof. Background technique [0002] In recent years, organic solar cells have developed rapidly. Due to their advantages of light weight, good flexibility, simple processing methods, large-area fabrication, and low cost, they have received extensive attention from academia and industry. At present, the photoelectric conversion efficiency of solar cells based on the blending of polymer donors and fullerene acceptors has exceeded 11%. This shows the great application prospect of organic solar cells. Polymer materials have higher photoelectric conversion efficiency of photovoltaic devices due to their higher molar extinction coefficient and wider solar spectrum absorption. However, polymers also have shortcomings, such as: uncertain molecular structure, polydisperse molecular weight distributi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D495/22H01L51/44H01L51/46H01L51/48
CPCC07D495/22H10K71/00H10K85/615H10K85/6576H10K30/84H10K71/12Y02E10/549Y02P70/50
Inventor 占肖卫代水星
Owner PEKING UNIV
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