D-A type conjugated polymer organic thermoelectric thin film material and preparation method thereof

A conjugated polymer and thermoelectric thin film technology is applied in the field of D-A type conjugated polymer organic thermoelectric thin film material and its preparation field, which can solve the problems of high thermal conductivity, high price and difficult processing of inorganic thermoelectric materials, and achieve a good solution The effect of processability, low cost, and simple and easy preparation method

Active Publication Date: 2018-10-09
SHENZHEN UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the deficiencies in the prior art above, the purpose of the present invention is to provide a D-A type conjugated polymer organic thermoelectric thin film material and its preparation method, aiming to solve the problems of high thermal conductivity and processing difficulties of existing inorganic thermoelectric materials. Toxic, expensive and other issues

Method used

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  • D-A type conjugated polymer organic thermoelectric thin film material and preparation method thereof
  • D-A type conjugated polymer organic thermoelectric thin film material and preparation method thereof
  • D-A type conjugated polymer organic thermoelectric thin film material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0052] Synthesis of polymer PBDDTTBTF-1:

[0053] In a 25ml two-necked flask, sequentially add monomer M1 (100mg, 0.1295mmol), monomer II (137mg, 0.1295mmol), tris(dibenzylideneacetone)dipalladium (6mg, 0.0065mmol), tris(o-toluene) Phosphorus (10mg, 0.0324mmol), 3.5ml of chlorobenzene, under the protection of nitrogen atmosphere, the reaction temperature is controlled at 110°C for 72h, the reaction formula is as follows:

[0054]

[0055] After the reaction is naturally cooled, the reaction solution is added dropwise to methanol to precipitate the polymer, and the solution containing methanol and polymer is centrifuged in a centrifuge at 3000 r / min for 10 minutes, and the supernatant liquid is discarded to obtain polymerization. The crude polymer product is vacuum dried in a vacuum drying oven for 12 hours, and the dried crude polymer product is placed in a Soxhlet extractor, and methanol, acetone, and n-hexane are used as solvents for Soxhlet extraction for 12 hours. , Remove the...

Embodiment 2

[0057] Preparation and doping method of polymer PBDDTTBTF-1 film:

[0058] The obtained polymer PBDDTTBTF-1 was dissolved in chlorobenzene at a concentration of 15mg / ml, and the solution was dripped onto a 15mm*15mm glass slide with a dropper. After the solvent evaporates, the glass attached to the glass slide can be obtained. Polymer film. Prepare a nitromethane solution of anhydrous ferric chloride with a concentration of 0.1 mol / L, put the obtained polymer film into the solution for soaking and doping for 10 minutes, take out the polymer film and rinse with a nitrohexane solution. Organic thermoelectric thin film materials that can be used for thermoelectric testing are available.

Embodiment 3

[0060] Performance characterization and thermoelectric performance test of polymer PBDDTTBTF-1 and polymer PBDDTTBTF-1 thin film materials:

[0061] 1. Test the molecular weight and molecular weight distribution of the polymer PBDDTTBTF-1 by Waters e2695 gel permeation chromatography, and the measured GPC curve is as follows figure 1 As shown, the number average molecular weight of the polymer PBDDTTBTF-1 is 56986, the weight average molecular weight is 109930, and the molecular weight distribution index is 1.93.

[0062] 2. Measure the polymer PBDDTTBTF-1 and polymer PBDDTTBTF-1 film materials dissolved in chlorobenzene solvent by Thermo Evolution 220 UV-Vis absorption spectrometer: UV-visible absorption spectrum of PBDDTTBTF-1 in chlorobenzene solution Such as figure 2 As shown, the wavelength corresponding to its maximum absorption peak is 566nm; the ultraviolet absorption spectrum of the polymer PBDDTTBTF-1 film material is as follows image 3 As shown, compared with the absorp...

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Abstract

The invention discloses a D-A type conjugated polymer organic thermoelectric thin film material and a preparation method thereof. The chemical structural formula of the organic thermoelectric thin film material is as shown in specification, wherein X is one of oxygen atoms, thiophene and thienothiophene, and n is an integer from 40 to 70. The provided organic thermoelectric thin film material is easily dissolved in common organic solvents such as tetrahydrofuran, dichloromethane, trichloromethane and chlorobenzene, and therefore, the organic thermoelectric thin film material has good solutionmachinability. In addition, the D-A type conjugated polymer organic thermoelectric thin film material further has high Seebeck coefficients and thermoelectric property, and meanwhile also has good flexibility, and thus, the organic thermoelectric thin film material is expected to be used in flexible wearable thermoelectric equipment; and moreover, the preparation method of the D-A type conjugatedpolymer organic thermoelectric thin film material is simple and easy to implement, and the cost is low.

Description

Technical field [0001] The invention relates to the field of organic thermoelectric materials, in particular to a D-A type conjugated polymer organic thermoelectric film material and a preparation method thereof. Background technique [0002] Economic and social development is inseparable from the continuous supply of energy. Nowadays, fossil energy sources such as petroleum and coal are increasingly scarce, and problems such as energy crisis and environmental pollution continue to emerge. Obtaining new clean energy has become extremely urgent. Thermoelectric materials, also known as thermoelectric materials, are semiconductor functional materials that use the transport and interaction of carriers and phonons inside a solid to achieve mutual conversion between heat and electrical energy. They are small in size, light in weight, quiet in operation and There is no need for conversion medium and mechanical movable parts, etc., and it is widely concerned as a new type of energy mater...

Claims

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Application Information

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IPC IPC(8): C08G61/12
CPCC08G61/126C08G2261/124C08G2261/1412C08G2261/1646C08G2261/18C08G2261/312C08G2261/3223C08G2261/3243C08G2261/414C08G2261/55
Inventor 潘成军王路海王雷
Owner SHENZHEN UNIV
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