Unlock instant, AI-driven research and patent intelligence for your innovation.

Preparation method and application of novel D-A copolymerization donor material

A D-A and copolymer technology, applied in the field of preparation of new D-A copolymer donor materials, can solve the problems of low photoelectric conversion efficiency, large environmental pollution, complex processing technology, etc., and achieve improved energy conversion efficiency, strong electron-absorbing ability, high-altitude effect on hole mobility

Pending Publication Date: 2021-10-08
BEIJING UNIV OF CHEM TECH
View PDF0 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the solar cells that have been practically used are mainly inorganic solar cells such as silicon-based solar cells and gallium arsenide solar cells. The pollution is relatively large and the processing technology is very complicated, so we need to develop new solar cells to solve these problems in inorganic solar cells [2-3]
[0004] Compared with traditional inorganic solar cells, organic solar cells have the advantages of low cost, light weight, simple preparation process, short energy recovery period and large-area, flexible and semi-transparent devices, and have good application prospects. However, to So far, the photoelectric conversion efficiency of organic solar cells is still much lower than that of inorganic solar cells.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Preparation method and application of novel D-A copolymerization donor material
  • Preparation method and application of novel D-A copolymerization donor material
  • Preparation method and application of novel D-A copolymerization donor material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0102] Embodiment 1: the preparation of intermediate 1

[0103]

[0104] Add 2,3-dichloromaleic anhydride (4.17g, 25mmol) and acetic acid (25ml) into a 100ml single-necked bottle, and then slowly add 2-octyldodecanylamine (8.18g, 27.5mmol) dropwise into the bottle. The reaction system was heated to reflux at 100°C for 22h. After the reaction, extract with dichloromethane, spin dry the solvent, use petroleum ether and dichloromethane as eluents, and separate by column chromatography to obtain 9.93 g of light yellow liquid with a yield of 89%.

[0105] NMR characterization data of Intermediate 1:

[0106] 1 H NMR (400MHz, Chloroform-d) δ3.47(d, J=7.1Hz, 2H), 1.75(q, J=6.4Hz, 1H), 1.24(m, 32H), 0.86(td, J=6.6, 2.7Hz,6H).

Embodiment 2

[0107] Embodiment 2: the preparation of intermediate 2

[0108]

[0109] Intermediate 1 (2.23g, 5mmol), sodium iodide (3.75g, 25mmol), and acetonitrile (25ml) were added to a 100ml single-necked bottle, and the reaction system was heated to reflux at 100°C for 72h. After the reaction, wash with saturated NaCl and water, extract with dichloromethane, spin dry the solvent, use petroleum ether and dichloromethane as eluents, and separate by column chromatography to obtain 2.83 g of dark yellow liquid with a yield of 90%.

Embodiment 3

[0110] Embodiment 3: the preparation of intermediate 3

[0111]

[0112] Intermediate 2 (3.15g, 5mmol), 3-thiophene boronic acid (1.60g, 12.5mmol), Pd(OAc) 2 (56mg, 0.25mmol) and t-Bu 3 PHBF 4 (144mg, 0.5mmol) was dissolved in acetone (60ml) solvent, under nitrogen protection, after stirring at room temperature for 5min, 8ml of NaOH (2M) aqueous solution was added, and the reaction mixture was reacted at room temperature for 5h. After the reaction, wash with saturated NaCl and water, extract with dichloromethane, spin dry the solvent, use petroleum ether and dichloromethane as eluents, and separate by column chromatography to obtain 2.41 g of yellow-green liquid with a yield of 89%.

[0113] NMR characterization data of Intermediate 3:

[0114] 1 H NMR (400MHz, Chloroform-d) δ7.99 (dd, J = 2.9, 1.2Hz, 2H), 7.33 (dd, J = 5.1, 2.9Hz, 2H), 7.30–7.23 (m, 2H), 3.51 ( d, J=7.2Hz, 2H), 1.83(m, 1H), 1.26(t, J=3.8Hz, 32H), 0.87(td, J=6.8, 3.7Hz, 6H).

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a preparation method and application of a novel D-A copolymerization donor material. The novel D-A copolymerization donor material comprises a dithienophthalimide unit (A unit), a thiophene pi bridge and a BDT unit (D unit) containing a thiophene side chain. The preparation process comprises the following steps: taking 2, 3-dichloromaleic anhydride as a raw material, sequentially carrying out amidation, replacement, Suzki coupling and ring-closure reaction to obtain a dithienophthalimide unit, introducing a thiophene pi bridge through a Stille coupling reaction, and finally introducing a BDT unit containing a thiophene side chain to obtain the novel D-A copolymerization donor material. The donor material has good solubility, is easy to process into a film, has a good photoelectric conversion function, and is used for preparing an organic solar cell device.

Description

technical field [0001] The invention relates to a preparation method and application of a novel D-A copolymerization donor material, belonging to the technical field of organic solar cells. Background technique [0002] Due to the abnormal global climate in recent years and the consumption of a large amount of petroleum fuels due to the economic development of various countries, the concentration of greenhouse gases such as carbon dioxide in the atmosphere has increased rapidly, resulting in more and more obvious phenomena such as global warming, sea level rise and climate change. It has increasingly negative impacts on water resources, crops, natural ecosystems and human health. Global warming and energy crisis have become two urgent problems to be solved. Therefore, the development of diversified, clean and non-polluting and renewable energy is the only way for the development of human society, and it is also an urgent task to solve the global energy crisis. In order to r...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08G61/12H01L51/48H01L51/46
CPCC08G61/126C08G2261/124C08G2261/1412C08G2261/149C08G2261/145C08G2261/3223C08G2261/3243C08G2261/414C08G2261/91C08G2261/146C08G2261/144H10K71/12H10K85/113H10K85/151Y02E10/549
Inventor 张志国李杨柳薛灵伟
Owner BEIJING UNIV OF CHEM TECH