A study of the thermoelectric properties of benzo[1,2-b:4,5-b′]dithiophene–based donor–acceptor conjugated polymers

Luhai Wang; Chengjun Pan; Zhongming Chen; Xiaoyan Zhou; Chunmei Gao; Lei Wang

doi:10.1039/C8PY00812D

A study of the thermoelectric properties of benzo[1,2-b:4,5-b′]dithiophene–based donor–acceptor conjugated polymers†

Luhai Wang,^a Chengjun Pan,*^ab Zhongming Chen,

^c Xiaoyan Zhou,^a Chunmei Gao*^a and Lei Wang

*^ab

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* Corresponding authors

^a Shenzhen Key Laboratory of Polymer Science and Technology, College of Materials Science and Engineering, Shenzhen University, Shenzhen 518060, China
E-mail: pancj@szu.edu.cn, gaocm@szu.edu.cn, wl@szu.edu.cn

^b Guangdong Research Center for Interfacial Engineering of Functional Materials, Shenzhen University, Shenzhen 518060, China

^c School of Environment and Civil Engineering, Dongguan University of Technology, Dongguan 523808, China

Abstract

Three benzo[1,2-b:4,5-b′]dithiophene (BDT)-based donor–acceptor (D–A) conjugated polymers with different side chains were designed, synthesized, and investigated as organic thermoelectric materials. Changing the side chains caused the three polymers to have different physical and chemical properties. The thermoelectric properties of BDT-based conjugated polymers have been systematically investigated through fine tuning of the side chains. Among the three polymers, the polymer with alkylthienothiophene moieties as the side chains exhibited the best thermal stability (thermal decomposition temperature above 400 °C), the highest electrical conductivity (1.519 S cm⁻¹), and the largest Seebeck coefficient (413.79 μV K⁻¹). The results of this study can guide the future design and synthesis of high-performance thermoelectric conjugated polymers.

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DOI: https://doi.org/10.1039/C8PY00812D
Article type: Communication
Submitted: 01 Jun 2018
Accepted: 31 Jul 2018
First published: 06 Aug 2018

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Polym. Chem., 2018,9, 4440-4447

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A study of the thermoelectric properties of benzo[1,2-b:4,5-b′]dithiophene–based donor–acceptor conjugated polymers

L. Wang, C. Pan, Z. Chen, X. Zhou, C. Gao and L. Wang, Polym. Chem., 2018, 9, 4440 DOI: 10.1039/C8PY00812D

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Polymer Chemistry

A study of the thermoelectric properties of benzo[1,2-b:4,5-b′]dithiophene–based donor–acceptor conjugated polymers†

Abstract

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A study of the thermoelectric properties of benzo[1,2-b:4,5-b′]dithiophene–based donor–acceptor conjugated polymers

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