Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Thermoelectric material based on polythiophene and preparation method and application thereof

A technology of thermoelectric materials and polythiophene, which is applied in the fields of instruments, optics, nonlinear optics, etc., can solve the problems of limited research and practical application of organic thermoelectric materials, and achieve reduced electron transport bandgap, high electron transport rate, and redox stability strong effect

Pending Publication Date: 2022-05-06
PEKING UNIV SHENZHEN GRADUATE SCHOOL
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

According to the requirements of the test, n-type materials can be obtained by adding group V elements such as donor impurities P and As; p-type thermoelectric materials can be obtained by adding group III elements such as acceptor impurities B, Al, Ga, etc., but currently organic Research and practical applications of thermoelectric materials are very limited

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Thermoelectric material based on polythiophene and preparation method and application thereof
  • Thermoelectric material based on polythiophene and preparation method and application thereof
  • Thermoelectric material based on polythiophene and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0091] The preparation steps of thermoelectric materials include:

[0092] (1) Mix 21mmol 3,4-dimethoxythiophene, 42mmol 2,2-bisbromomethylpropanediol, 2.1mmol p-toluenesulfonic acid and 200mL toluene in a 500mL flask equipped with a Soxhlet extractor. A 4A type molecular sieve was installed in the cellulose thimble, the solution was refluxed overnight, the reaction product was cooled and washed once with water, the toluene was removed under vacuum conditions, and the crude product was purified by silica gel column chromatography with n-hexane / dichloromethane (volume ratio 3:1). product, 3,3-bisbromomethyl-3,4-dihydrothieno[3,4-b][1,4]dioxetane was obtained. 1H NMR (400MHz, Chloroform-d) δ6.50(s,2H),4.10(s,4H),3.61(s,4H),1.58(s,5H),1.50–1.15(m,4H),1.03– 0.71(m,2H).

[0093] Concrete synthetic route is as follows:

[0094]

[0095] (2) 50mL DMF, 17.54mmol C 6 h 13 OH, 35.08mmol NaH were mixed in a 250mL flame-dried round bottom flask, heated at 110°C overnight, and then...

Embodiment 2

[0117] The difference from Example 1 is that the C in the step (2) 6 h 13 OH is replaced by C 8 h 17 OH, the synthetic route to obtain the thermoelectric material is as follows:

[0118]

Embodiment 3

[0120] The difference from Example 1 is that the C in the step (2) 6 h 13 OH is replaced by C 4 h 9 OH, the synthetic route to obtain the thermoelectric material is as follows:

[0121]

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a thermoelectric material based on polythiophene and a preparation method and application thereof. The structural general formula of the thermoelectric material is shown in the specification, wherein R1 is alkyl or oligo-polyether; n is an integer greater than or equal to 1; a is selected from para-substituted aryl. The thermoelectric material has electrochromism and thermoelectric properties, has flame retardance, high electron transmission rate, redox stability of thousands of redox cycles and high charge storage capacity, and shows dual electroactivity in water and an organic electrolyte system. As the compound has a relatively long conjugated structure, the electron transport band gap can be reduced. The thermoelectric material forms a microporous polymer with a dual polarization effect through donor-receptor type polymerization, under the action of an external voltage signal, a PEDOT derivative unit in the thermoelectric material structure and 4, 7-dibromobenzo [C] [1, 2, 5] thiadiazole are subjected to a reversible oxidation-reduction reaction, and the oxidation state and the reduction state have different colors, so that the thermoelectric material can be applied to the field of thermoelectric devices. Therefore, the thermoelectric material also has an electrochromic property.

Description

technical field [0001] The invention relates to the field of thermoelectric materials, in particular to a polythiophene-based thermoelectric material and its preparation method and application. Background technique [0002] The use of thermoelectric semiconductor materials for the mutual conversion of heat energy and electric energy, whether it is used as a power source for power generation or as a refrigerator for refrigeration, has its unique advantages that other methods do not have, so it is favored by people, such as it It can realize the direct conversion between thermal energy and electric energy without the complicated and expensive process of liquefied or vaporized liquid and turbo generator, especially its advantages of mobility, stable performance and long life are unmatched by other types of power sources , And become the goal pursued by power supply and pollution-free refrigeration. [0003] In recent years, due to the continuous improvement of the performance ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08G61/12G02F1/1516
CPCC08G61/126C08G61/123G02F1/15165C08G2261/12C08G2261/131C08G2261/18C08G2261/3229C08G2261/3223C08G2261/54C08G2261/94
Inventor 孟鸿许红贺耀武
Owner PEKING UNIV SHENZHEN GRADUATE SCHOOL
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com