Polymer or micro-molecular material having molecular main chain comprising dibenzothiophene sulfoxide group, preparation method and application thereof

A technology of benzodisulfoxide phene and benzodisulfoxide, which is applied in the field of organic solar cells, can solve the problems of low carrier mobility, narrow absorption spectrum, poor stability, etc., achieve broad absorption spectrum and enhance molar absorption coefficient, the effect of improving coplanarity

Active Publication Date: 2017-06-30
NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, current organic solar cells still have problems such as narrow absorption spectrum, low carrier mobility, low efficiency and poor stability, so it is necessary to develop new high-performance donor materials.

Method used

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  • Polymer or micro-molecular material having molecular main chain comprising dibenzothiophene sulfoxide group, preparation method and application thereof
  • Polymer or micro-molecular material having molecular main chain comprising dibenzothiophene sulfoxide group, preparation method and application thereof
  • Polymer or micro-molecular material having molecular main chain comprising dibenzothiophene sulfoxide group, preparation method and application thereof

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Experimental program
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Embodiment 1

[0029] In the present embodiment, the polymer structural formula is as follows:

[0030]

[0031] The preparation of this polymer comprises the steps:

[0032] (1) Preparation of benzodisulfoxide phenyl acceptor unit

[0033]

[0034] Add 0.3g of compound 1 and 20mL of dichloromethane into a round-necked flask, place the flask in a low-temperature bath and cool it to 5°C, add dropwise 10mL of hydrogen peroxide and 15mL of formic acid with a concentration of 30%, and stir for 12 hours. After the reaction was completed, formic acid was removed by adding a saturated sodium bicarbonate solution dropwise, and the product was extracted with dichloromethane and dried with magnesium sulfate. After being spin-dried, it was passed through a silica gel column to obtain a light yellow product 2 with a mass of 0.16 g and a yield of 51%. 1 H-NMR (400MHz, CDCl 3 ):δ7.39(d,2H),6.71(d,2H),4.41(t,4H),2.0-1.81(m,4H),1.55-1.45(m,4H),1.39-1.33(m,8H ), 0.89(t,6H). The calculated molecula...

Embodiment 2

[0041] In the present embodiment, the polymer structural formula is as follows:

[0042]

[0043] The preparation of this polymer comprises the steps:

[0044]

[0045] Add 0.1g of compound 2, 0.064g of 2,5-trimethyltinthiophene and 10mL of toluene into a three-necked flask, replace nitrogen three times, add 4mg of catalyst tris(dibenzylideneacetone)dipalladium and 4.63mg of triphenylphosphine , and then replace nitrogen three times, and react under reflux for 24 hours. After the reaction, the product was subjected to Soxhlet extraction, using methanol, acetone and n-hexane as solvents, and finally using toluene to obtain 50 mg of the polymer product, with a yield of 57%.

[0046] 1 H-NMR (400MHz, CDCl 3 ):δ7.3-7.2(m,2H),7.0-6.8(m,2H),4.0-3.78(m,4H),2.0-1.9(m,2H),1.3-1.2(m,16H),1 -0.9(m,12H).

[0047] The above-prepared polymers can be used as donor materials in organic solar cells. The structure of the organic solar cell is as figure 1 As shown, the anode is made...

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Abstract

The invention provides a polymer or a micro-molecular material having a molecular main chain comprising a dibenzothiophene sulfoxide group, which has sulfonyl group having strong electron-withdrawing capability, can form a donor material by connecting with other groups having donor characteristic, has excellent charge transmission performance, and can widen absorption of the material in a visible light zone. The preparation method of the material is easy to carry out, the material can be used for the donor material of an organic solar cell, and can increase the efficiency of a cell device.

Description

technical field [0001] The invention relates to a polymer or a small molecule material containing a benzodisulfoxide phene group in a molecular main chain, which can be used in the technical field of organic solar cells. Background technique [0002] Organic solar cells have become a research hotspot in the field of photovoltaics due to their advantages of light weight, low cost, and easy flexible large-area preparation. The photosensitive active layer material is the main material that absorbs sunlight and converts it into electrical energy, and its characteristics directly determine the performance of the battery device. . [0003] However, current organic solar cells still have problems such as narrow absorption spectrum, low carrier mobility, low efficiency, and poor stability, requiring the development of new high-performance donor materials. Contents of the invention [0004] The present invention provides a polymer or small molecule material comprising a benzodisul...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G61/12C07D519/00H01L51/46
CPCC07D519/00C08G61/126C08G2261/414C08G2261/512C08G2261/514C08G2261/91C08G2261/124C08G2261/149C08G2261/1424C08G2261/1412C08G2261/145C08G2261/3243C08G2261/226C08G2261/228H10K85/113Y02E10/549
Inventor 葛子义刘志洋彭瑞祥蒋卫刚李旺雷涛管倩
Owner NINGBO INST OF MATERIALS TECH & ENG CHINESE ACADEMY OF SCI
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