Selective Doping of Conjugated Block Copolymer for Organic Thermoelectric Applications

IF 2.7 3区工程技术 Q2 ENGINEERING, MECHANICAL

Nanoscale and Microscale Thermophysical Engineering Pub Date : 2019-03-18 DOI:10.1080/15567265.2019.1586804

Joon-soo Kim, Sung‐Yu Ku, N. Economou, Woongsik Jang, D. H. Wang

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引用次数: 2

Abstract

ABSTRACT We demonstrate the selectively p- or n-type doping behavior of conjugated block copolymer (BCP). The poly(3-hexylthiophene)-b-poly{[N,N-9-bis(2-octyldodecyl)-naphtalene-1, 4, 5, 7-bis(dicarboximide)-2,6-diyl]-alt-5,59-(2,29-bithiophene)}, P3HT-b-P(NDI2OD-T2), has been successfully synthesized via Stille-coupling polymerization, and these p- and n-type blocks containing BCP can be doped using either F4TCNQ or N-DMBI, generating holes or electrons as carriers, respectively. The electrical conductivity of p-doped BCP is 1.4 × 10−3 S·cm−1, whereas, for n-doped BCP, the film conductivity is 1.7 × 10−4 S·cm−1 using the four-probe method. Further, we investigate the Seebeck coefficient of doped BCP, evaluating the potential properties for thermoelectric applications. The analysis results show that the synthesized conjugated BCP can be doped either way to induce holes or electrons from a single composite polymer, and when one block is doped, the other un-doped block has no influence on the electrical conductivity. Accordingly, doping either the p- or n-type phenomenon of a single polymer is demonstrated in this study, realizing a new strategy not only for thermoelectric materials but also for overall organic electric applications.

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用于有机热电应用的共轭嵌段共聚物的选择性掺杂

摘要:研究了共轭嵌段共聚物(BCP)的选择性p型或n型掺杂行为。通过still -偶联聚合成功合成了聚(3-己基噻吩)-b-聚{[N,N-9-双(2-辛基十二烷基)-萘- 1,4,5,7 -双(二碳酰亚胺)-2,6-二基]-盐-5,59-(2,29-双噻吩)}，P3HT-b-P(NDI2OD-T2)，这些含有BCP的p型和N型嵌段可以用F4TCNQ或N- dmbi掺杂，分别产生空穴或电子作为载体。p掺杂BCP的电导率为1.4 × 10−3 S·cm−1，而n掺杂BCP的电导率为1.7 × 10−4 S·cm−1。此外，我们研究了掺杂BCP的塞贝克系数，评估了热电应用的潜在性能。分析结果表明，所合成的共轭BCP可以通过两种掺杂方式从单一复合聚合物中诱导出空穴或电子，并且当一个嵌段掺杂时，另一个未掺杂的嵌段对电导率没有影响。因此，在本研究中证明了单一聚合物的p型或n型掺杂现象，实现了热电材料和整体有机电应用的新策略。

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来源期刊

Nanoscale and Microscale Thermophysical Engineering 工程技术-材料科学：表征与测试

CiteScore

5.90

自引率

2.40%

发文量

审稿时长

3.3 months

期刊介绍： Nanoscale and Microscale Thermophysical Engineering is a journal covering the basic science and engineering of nanoscale and microscale energy and mass transport, conversion, and storage processes. In addition, the journal addresses the uses of these principles for device and system applications in the fields of energy, environment, information, medicine, and transportation. The journal publishes both original research articles and reviews of historical accounts, latest progresses, and future directions in this rapidly advancing field. Papers deal with such topics as: transport and interactions of electrons, phonons, photons, and spins in solids, interfacial energy transport and phase change processes, microscale and nanoscale fluid and mass transport and chemical reaction, molecular-level energy transport, storage, conversion, reaction, and phase transition, near field thermal radiation and plasmonic effects, ultrafast and high spatial resolution measurements, multi length and time scale modeling and computations, processing of nanostructured materials, including composites, micro and nanoscale manufacturing, energy conversion and storage devices and systems, thermal management devices and systems, microfluidic and nanofluidic devices and systems, molecular analysis devices and systems.