A kind of benzodithiophene-thienopyrrole diketopic double cable conjugated polymer and its preparation method

A conjugated polymer, benzodithiophene technology, which is applied in the manufacture of semiconductor/solid-state devices, electric solid-state devices, semiconductor devices, etc., can solve the problems of low photoelectric energy conversion efficiency of solar cells, etc. Simple and effective, the effect of simplifying the preparation process

Active Publication Date: 2021-04-06
INST OF APPLIED CHEM JIANGXI ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to solve the problem that the photoelectric energy conversion efficiency of existing single-component polymer solar cells is relatively low, and the present invention provides a kind of double-cable conjugated polymer substances and their preparation methods

Method used

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  • A kind of benzodithiophene-thienopyrrole diketopic double cable conjugated polymer and its preparation method
  • A kind of benzodithiophene-thienopyrrole diketopic double cable conjugated polymer and its preparation method
  • A kind of benzodithiophene-thienopyrrole diketopic double cable conjugated polymer and its preparation method

Examples

Experimental program
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Embodiment 1

[0033] Such as figure 1 As shown, the synthesis of the benzodithiophene-thienopyrrole diketope double-cable conjugated polymer PPTPDBPTI in this example is as follows:

[0034] Concrete synthetic steps are:

[0035] (1) In a 100mL reaction flask, dissolve alkyl bromide-substituted thienopyrrole diketone 1 (142mg, 0.25mmol) and transverse PBI receptor 2 (221.5mg, 0.28mmol) in 20mL of DMF, and wait for the solution to equilibrate Potassium carbonate (71 mg, 0.51 mmol) was added.

[0036] Heat to 75 degrees Celsius, react for 24 hours, after cooling, add 70 mL each of chloroform and deionized water. The liquid was separated, the organic phase was washed with brine, dried and rotary evaporated to obtain the crude product. The crude product was separated on a silica gel column, eluent dichloromethane:petroleum ether=4:1 (V / V), to obtain 147 mg of pure intermediate M1 with a yield of about 50%. 1 H NMR (CDCl 3 ,400MHz): δ(ppm)10.36(s,2H),9.30-9.33(d,2H),9,14(s,2H),5.32(s,2H),3....

Embodiment 2

[0040] In this example, the benzodithiophene-thienopyrrole diketope double-cable conjugated polymer PPTPDBPTI is applied to a single-component organic solar cell device:

[0041] The specific device structure of organic solar cells is shown in the attached Figure 8 Shown: Indium tin oxide / zinc oxide (ITO / ZnO) is used as an electrode on a glass substrate, an organic semiconductor active layer is spin-patterned on it, and molybdenum trioxide / silver (MoO 3 / Ag) as the electrode. The thickness of the zinc oxide layer is about 40nm, the thickness of the active layer is about 100nm, the thickness of the molybdenum oxide is about 10nm, and the thickness of the silver is about 100nm.

[0042] The obtained benzodithiophene-thienopyrrole diketopic double cable polymer PPTPDBPTI in Example 1 is used as the only active component in non-fullerene solar cells, with indium tin oxide / zinc oxide (ITO / ZnO) and three Molybdenum oxide / silver (MoO 3 / Ag) as the electrode. The active layer PTP...

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Abstract

A benzodithiophene-thienopyrrole-containing double-cable conjugated polymer and a preparation method thereof, the method is as follows: (1) adding an alkyl bromide-substituted thienopyrrole diketope and an acceptor nucleophile to In the organic solvent, potassium carbonate was added after the solution was balanced, heated for reaction, and chloroform and deionized water were added after cooling; the liquid was separated, the organic phase was washed with brine, dried, and rotary evaporated to obtain a crude product; the crude product was separated through a silica gel column to obtain pure Intermediate M1; (2) Add intermediate M1 and benzodithiophene bistin reagent M2 to toluene; after degassing the above solution, add palladium catalyst and triphenylphosphine; heating reaction; product precipitation, Filtration; the polymer was precipitated in acetone; suction filtration with a filter membrane and vacuum drying to obtain a black double-cable polymer product. The polymer prepared by the invention connects electron donors and acceptors through covalent bonds to form a single-component active layer, which is applied to photovoltaic devices and is an organic photovoltaic material with excellent performance.

Description

technical field [0001] The invention relates to a benzodithiophene-thienopyrrole diketone-containing double-cable conjugated polymer and a preparation method thereof, belonging to the technical field of organic semiconductor materials. Background technique [0002] Organic solar cells have the characteristics of light weight, flexibility, adjustable structure, and solution processing. In recent years, they have attracted extensive attention from academia and industry. Among them, two-component or multi-component bulk heterojunction solar cells have been studied most deeply, and the energy conversion efficiency of a single cell has exceeded 15%. However, this type of device has many optimization steps and poor stability. Facilitate the preparation of large areas. In single-component solar cells, electron donors and acceptors are connected by covalent bonds to form a single-component active layer, which can effectively simplify the device preparation process and improve devic...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G61/12H01L51/46
CPCY02E10/549
Inventor 李韦伟游胜勇赵朝委晏南富
Owner INST OF APPLIED CHEM JIANGXI ACAD OF SCI
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