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首页> 外文期刊>The journal of physical chemistry, C. Nanomaterials and interfaces >Matching Diethyl Terephthalate with n-Doped Conducting Polymers
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Matching Diethyl Terephthalate with n-Doped Conducting Polymers

机译：将对苯二甲酸二乙酯与n型掺杂导电聚合物匹配

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摘要

The combination of small, high charge capacity molecules as pendant groups with a conducting polymer backbone having good electronic conductivity upon doping, gives the possibility to design a high capacity conducting redox polymer material for electric energy storage applications. The desired synergetic effect of the two components requires energy matching as well as chemical compatibility of the pendant group and the polymer backbone. Here we investigate the matching of diethyl terephthalate (DeT) with the thiophene-based conducting polymers polythiophene (PT), poly(3,4-ethylenedioxythiophene) (PEDOT), and polyphenylthiophene. We show that a stable and well-defined electrochemical response of DeT is achieved, together with all conducting polymers except for PT in tetrabutylammonium hexafluorophosphate electrolyte, indicating good energy match as well as chemical compatibility between DeT and polymers. By varying the size of ammonium cations in the electrolytes, we further show how this size affects the conductivity and the cycling stability of the polymers and also that the n-doping performance of all conducting polymers can be improved by the use of smaller alkyl ammonium cations. On the basis of these results, we suggest that PEDOT and PT are suitable candidates for a polymer backbone in conducting redox polymers with DeT pendant groups.
机译：较小的高电荷容量分子作为侧基与掺杂时具有良好电子导电性的导电聚合物主链相结合，为设计用于电能存储应用的高容量导电氧化还原聚合物材料提供了可能。两种组分的所需协同作用需要能量匹配以及侧基和聚合物主链的化学相容性。在这里，我们研究了对苯二甲酸二乙酯（DeT）与基于噻吩的导电聚合物聚噻吩（PT），聚（3,4-乙撑二氧噻吩）（PEDOT）和聚苯噻吩的匹配。我们显示，与六氟磷酸四丁铵铵中的PT以外的所有导电聚合物一起，可以实现DeT的稳定且定义明确的电化学响应，表明良好的能量匹配以及DeT与聚合物之间的化学相容性。通过改变电解质中铵阳离子的大小，我们进一步证明了该大小如何影响聚合物的电导率和循环稳定性，以及通过使用较小的烷基铵阳离子可以提高所有导电聚合物的n掺杂性能。 。根据这些结果，我们建议在进行带有DeT侧基的氧化还原聚合物时，PEDOT和PT是聚合物主链的合适候选物。

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