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Ternary conjugated polymer thermoelectric material with different side chain polarities, and preparation method and application thereof

A technology of conjugated polymers and compounds, applied in the field of polymer thermoelectric materials, can solve the problems of difficult to explain the regulation mechanism, not universal, and cumbersome preparation process, and achieve high power factor, moderate Seebeck coefficient, and promising application prospects broad effect

Active Publication Date: 2020-01-10
SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the preparation process of the former is cumbersome and requires special conditions such as high vacuum; the material system of the latter is complex, and the regulation mechanism is difficult to explain
Moreover, these methods have strict restrictions on the structure of the polymer and the dopant itself, and are not universal

Method used

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  • Ternary conjugated polymer thermoelectric material with different side chain polarities, and preparation method and application thereof
  • Ternary conjugated polymer thermoelectric material with different side chain polarities, and preparation method and application thereof
  • Ternary conjugated polymer thermoelectric material with different side chain polarities, and preparation method and application thereof

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preparation example Construction

[0069] In one embodiment of the present invention, the preparation method of an alternating conjugated polymer based on diketopyrrolopyrrole and ethoxy-substituted bithiophene comprises the following steps: compound 1 and compound 2 are carried out under the conditions of an inert atmosphere and the presence of a catalyst For the copolymerization reaction, the polymerization method uses Stille coupling to obtain the polymer shown in formula II. The preparation method of the alternating conjugated polymer based on diketopyrrolopyrrole and ethoxy-substituted bithiophene is exemplarily described below.

[0070] Will equimolar amount with R 1 , R 2 The diketopyrrolopyrrole diketopyrrolopyrrole dibromo substituent and the ethoxy-substituted bithienstannane substituent are put into a reaction bottle, and an inert gas is passed.

[0071] Continue to add anhydrous chlorobenzene in the reaction bottle, fill with nitrogen after vacuumizing, stir for a certain period of time (for examp...

Embodiment 1

[0081] Terpolymer shown in the preparation formula Ⅰ-1, wherein R 1 and R 2 Both are 2-octyl-dodecyl, k is 3, m is 0.7, 0.5, 0.3 respectively;

[0082]

[0083] The specific steps and conditions of the above-mentioned polymerization reaction are as follows:

[0084] (1) According to the method disclosed by Iain McCulloch (J.Am.Chem.Soc.2011,133,3272-3275), the synthesized 2,5-di(2-octyldodecyl)-3,6- Bis(5-bromothienyl-2-)-diketopyrrolopyrrole (122.3 mg) was added to the polymerization bottle, and then ethoxylate synthesized according to the method published by Christian Müller (Adv. Base thiophene (33.4 mg), add trimethylstannothiophene (80.2 mg), add 6 milliliters of chlorobenzene, vacuum deoxygenate, fill with argon, then add palladium catalyst (2.0 mg), phosphorus ligand (2.1 milligrams), vacuumized and filled with argon again, the solution was heated to 110°C, stirred and reacted for 48 hours, and a polymer with m of 0.7 was obtained. After the reaction was complete...

Embodiment 2

[0089] The polymer material provided by the invention and 2,3,5,6-tetrafluoro-7,7',8,8'-tetracyanodimethyl-p-benzoquinone are mixed by using a liquid phase chemical doping method. The polymer obtained in Example 1 was dissolved in chlorobenzene to prepare a 5 mg / mL solution, and 2,3,5,6-tetrafluoro-7,7',8,8'-tetracyanodimethyl Benzoquinone was dissolved in chlorobenzene to obtain a 2 mg / mL solution. The polymer solution described in formula I-1 and the dopant solution were mixed according to a mass ratio of 3:1 to obtain a doped solution composition.

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Abstract

The invention relates to a ternary conjugated polymer thermoelectric material with different side chain polarities, and a preparation method and an application thereof. The side chain polarities of pyrrolopyrroledione and bithiophene in the ternary conjugated polymer based on pyrrolopyrroledione and ethoxy-substituted bithiophene are different; and the structural general formula of the ternary conjugated polymer is shown in the description.

Description

technical field [0001] The invention relates to a method for synthesizing and thin film preparation of a polymer thermoelectric material with high conductivity and high Seebeck coefficient and its application, and belongs to the technical field of polymer thermoelectric materials. Background technique [0002] Thermoelectric conversion materials can realize mutual conversion between thermal energy and electric energy through the Seebeck effect and Peltier effect, and are expected to directly convert a large amount of industrial waste heat, solar heat, etc. into green electric energy. It is a new type of clean energy technology, and high The development of high-performance thermoelectric conversion materials has been the focus of research in this field. [0003] At present, high-performance thermoelectric materials are mainly based on inorganic materials (such as Bi 2 Te 3 ), this type of material has high thermal conductivity, expensive raw materials and harsh preparation ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G61/12H01L35/24H01L51/30H10N10/856
CPCC08G61/124C08G61/126C08G2261/124C08G2261/1412C08G2261/51C08G2261/1424C08G2261/18C08G2261/3223C08G2261/3241C08G2261/3243C08G2261/414C08G2261/92H10N10/856H10K85/113H10K85/151
Inventor 李慧陈立东
Owner SHANGHAI INST OF CERAMIC CHEM & TECH CHINESE ACAD OF SCI
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