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Preparation of novel dibenzothiophene-containing narrow band gap conjugated polymer material

A conjugated polymer, dibenzothiophene technology, which is applied in the field of preparation of narrow band gap conjugated ladder polymer materials, can solve the problems of rare dibenzothiophene materials

Inactive Publication Date: 2013-12-04
李翠红 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the application of photovoltaic materials, dibenzothiophene-based materials are still relatively rare

Method used

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  • Preparation of novel dibenzothiophene-containing narrow band gap conjugated polymer material
  • Preparation of novel dibenzothiophene-containing narrow band gap conjugated polymer material
  • Preparation of novel dibenzothiophene-containing narrow band gap conjugated polymer material

Examples

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Embodiment 1

[0014] Example 1: Preparation of conjugated polymers containing dibenzothiophene with the structure of formula 1: 471.0mg monomer M1, 637.1mg M2, 30mL tetrahydrofuran, 6mL water, and 1.5g NaHCO 3 In a 100ML slit-gate flask, add 20.61mg of Pd (PPh 3 ) 4 Before and after, the nitrogen gas was repeatedly filled and degassed, and then the system was stirred and refluxed for 72 hours under a nitrogen atmosphere. Then cool the system, add 50mg phenylboronic acid and 20.61mg Pd(PPh 3 ) 4 Raise the temperature and react for 4 hours, then cool down and add 500 μL of bromobenzene to continue the reaction overnight to complete capping. After the system was cooled to room temperature, water and chlorobenzene were added; the organic layer was separated with a separatory funnel and washed three times with water. Then heat the organic phase to 100°C to dissolve part of the precipitated polymer, filter the organic phase and rotary evaporate the filtrate to remove most of the solvent, drop...

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Abstract

The invention discloses a preparation method for a novel dibenzothiophene-containing narrow band gap conjugated polymer material and applications. The structure of the dibenzothiophene-containing narrow band gap conjugated polymer is shown in the appended drawing, wherein n is an integer which is more than or equal to 4. At present, structures of alternate donors and acceptors broaden absorption spectra of materials greatly, and conjugated polymers with alternate donors and acceptors are widely used in organic solar cells. Dibenzothiophene has a rigid and planar structure. The derivatives of dibenzothiophene are used in stable OLED luminescent devices. The planarity of dibenzothiophene and the S-S interaction among the molecules can promote ordered pi stack of molecule main chains. The ordered stack can be convenient for transmission of charge carriers.

Description

technical field [0001] The invention belongs to the field of organic solar cell materials, and in particular relates to the preparation of a novel narrow band gap conjugated ladder polymer material. As the world is facing an energy crisis, photoelectric conversion technology is considered to be one of the most important renewable energy sources. Among them, polymer solar cells have received extensive attention due to their advantages of low cost, light weight, and large-area preparation. One of the important factors to obtain high photoelectric conversion efficiency is to develop electron donor materials with excellent properties. At present, the highest conversion efficiency has reached 30%. After years of in-depth research, people have formed some consensus on the design ideas of materials, which are summarized as follows: (1) It has a low energy gap (the best value is about 1.5eV), so as to effectively absorb sunlight and convert it into short-circuit current ; (2) have ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G61/12H01L51/46
CPCY02E10/549
Inventor 李翠红薄志山金恩泉
Owner 李翠红