Solution-Processable Copolymers Based on Triphenylamine and 3,4-Ethylenedioxythiophene: Facile Synthesis and Multielectrochromism.,Macromolecular Rapid Communications

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Solution-Processable Copolymers Based on Triphenylamine and 3,4-Ethylenedioxythiophene: Facile Synthesis and Multielectrochromism.
Macromolecular Rapid Communications ( IF 4.2 ) Pub Date : 2020-06-24 , DOI: 10.1002/marc.202000156
Wei Teng Neo ₁ , Qun Ye ₁ , Ming Hui Chua ₁ , Qiang Zhu ₁ , Jianwei Xu _{1,

2}

Affiliation

In comparison with traditional inorganic electrochromic materials, organic polymers offer advantages such as fast switching speed, flexibility, lightweightness, low cost and nontoxicity, solution‐processability, and color tunability. Herein, a series of hyper‐branched copolymers are synthesized from triphenylamine and 3,4‐ethylenedioxythiophene with different feed ratios via iron(III) chloride (FeCl₃)‐mediated oxidative polymerization. The resultant organic‐soluble polymers are easily processable and their corresponding electrochromic devices are found to be stable with limited degradation upon 2500 cycles. In addition to their facile synthesis to achieve solution‐processable polymers, studies also show that the polymers exhibit multielectrochromic properties and give rise to five colored states upon oxidative‐doping by applying an external voltage between 0 and 2.0 V, providing an interesting example of polymers with unique electrochromic switching among up to five colors, from yellow at the neutral state, to pale green, pale purple, orange, and finally gray.

中文翻译：

基于三苯胺和3,4-乙二氧基噻吩的溶液可加工共聚物：简便的合成和多电致变色。

与传统的无机电致变色材料相比，有机聚合物具有切换速度快，柔韧性好，重量轻，成本低且无毒，溶液加工性和色彩可调性等优点。本文中，通过氯化铁（III）（FeCl ₃）由三苯胺和3,4-乙撑二氧噻吩以不同的进料比合成了一系列超支化共聚物。）介导的氧化聚合。所得的有机可溶性聚合物易于加工，并且发现其相应的电致变色器件稳定，并且经过2500次循环后降解程度有限。除了易于合成以实现可溶液处理的聚合物外，研究还表明，该聚合物具有多电致变色特性，并且通过在0到2.0 V之间施加外部电压，在氧化掺杂时会产生五个有色状态，这是一个有趣的例子在多达五种颜色之间进行独特的电致变色切换，从中性状态的黄色到浅绿色，浅紫色，橙色，最后是灰色。

更新日期：2020-06-24

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