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

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A study of the thermoelectric properties of benzo[1,2-b:4,5-b′]dithiophene–based donor–acceptor conjugated polymers†
Polymer Chemistry ( IF 4.1 ) Pub Date : 2018-08-06 00:00:00 , DOI: 10.1039/c8py00812d
Luhai Wang _{1,

2,

3,

4,

5} , Chengjun Pan _{1,

2,

3,

4,

5} , Zhongming Chen _{5,

6,

7,

8} , Xiaoyan Zhou _{1,

2,

3,

4,

5} , Chunmei Gao _{1,

2,

3,

4,

5} , Lei Wang _{1,

2,

3,

4,

5}

Affiliation

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.

中文翻译：

苯并[1,2- b：4,5 - b ']二噻吩基供体-受体共轭聚合物的热电性能研究†

设计，合成和研究了三种具有不同侧链的苯并[1,2- b：4,5- b ']二噻吩（BDT）基供体-受体（DA）共轭聚合物，并将其作为有机热电材料进行了研究。改变侧链导致三种聚合物具有不同的物理和化学性质。通过微调侧链，系统地研究了基于BDT的共轭聚合物的热电性能。在这三种聚合物中，以烷基噻吩并噻吩部分为侧链的聚合物表现出最佳的热稳定性（热分解温度高于400°C），最高的电导率（1.519 S cm ^-1）和最大的塞贝克系数（413.79μVK）^-1）。这项研究的结果可以指导高性能热电共轭聚合物的未来设计和合成。

更新日期：2018-08-06

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