Truly solid state electrochromic devices constructed from polymeric ionic liquids as solid electrolytes and electrodes formulated by vapor phase polymerization of 3,4-ethylenedioxythiophene
Truly solid state electrochromic devices constructed from polymeric ionic liquids as solid electrolytes and electrodes formulated by vapor phase polymerization of 3,4-ethylenedioxythiophene
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DOI：
10.1016/j.polymer.2014.04.013
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发表时间：
2014-08
期刊：
影响因子：
4.6
通讯作者：
A. Shaplov;D. Ponkratov;P. Aubert;E. I. Lozinskaya;C. Plesse;A. Maziz;P. Vlasov;F. Vidal;Y. Vygo
中科院分区：
文献类型：
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作者：
A. Shaplov;D. Ponkratov;P. Aubert;E. I. Lozinskaya;C. Plesse;A. Maziz;P. Vlasov;F. Vidal;Y. Vygo
分别以高分子离子液体聚[1-（2-（2-（甲基丙烯酰氧基）乙基）-3-甲基咪唑]二（三氟甲基磺酰）亚胺或四氰基硼酸盐作为离子导体和聚（3，4-乙撑二氧噻吩）（PEDOT）作为电极，构建了基于全聚合物的薄膜对称电致变色器件（ECD）。所提出的架构作为概念的证明，聚合物离子液体（PIL）本身可以用作固体电解质，从而避免任何电解质泄漏，因为离子液体物种接枝在聚合物主链上。本文研究了三种不同的PEDOT电极膜的合成方法，其中包括两种新的方法，即在离子单体和聚乙二醇（二）甲基丙烯酸酯存在下气相聚合3，4-乙撑二氧噻吩（EDOT）。首次合成了两种与PIL具有相同阴离子的氧化剂Fe[（CF_3SO_2）_2N]_3和Fe[（CN）_4B]_3，并将其用于EDOT的气相聚合。结果发现，更紧凑的结构和最高的电导率实现了由EDOT在离子单体和聚（乙二醇）（二）甲基丙烯酸酯的存在下，然后通过后者的自由基聚合的气相聚合制备的PEDOT电极。在所提出的技术的优点中发现了ECD组装的简单性、它们的快速切换时间（3-5 s）、高着色效率（高达430 cm 2/C）、令人满意的光学对比度（高达28.5%）、不存在任何液体以及在空气和真空中的良好性能。
Using polymeric ionic liquids, namely poly[1-(2-(2-(2-(methacryloyloxy)ethoxy)ethoxy)ethyl)-3-methylimidazolium]bis(trifluoromethylsulfonyl)imide or tetracyanoborate, and poly(3,4-ethylenedioxythiophene) (PEDOT) as an ion conductor and electrodes, respectively, the all-polymer-based thin-film symmetrical electrochromic devices (ECDs) have been constructed and tested. The proposed architecture serves as a prove of concept that polymeric ionic liquids (PILs) can be themselves used as solid electrolytes thus avoiding any electrolyte leakage since the ionic liquid species are grafted on the polymer backbone. Three different methods for the synthesis of PEDOT electrode films, including two new approaches consisted in vapor phase polymerization of 3,4-ethylenedioxythiophene (EDOT) in the presence of ionic monomer and poly(ethylene glycol)(di)methacrylates, have been investigated. Two oxidants, Fe[(CF3SO2)2N]3and Fe[(CN)4B]3, bearing the same anions as PILs were prepared for the first time and utilized in the vapor phase polymerization of EDOT. It was found that the more compact structure and the highest conductivity are achieved for PEDOT electrodes prepared by vapor phase polymerization of EDOT in the presence of ionic monomer and poly(ethylene glycol)(di)methacrylates, followed by radical polymerization of the latters. The simplicity of ECDs assembly, their fast switching times (3–5 s), high coloration efficiency (up to 430 cm2/C), satisfactory optical contrast (up to 28.5%), absence of any liquids and good performance in air and in vacuum were found among the advantages of the proposed technology.