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Novel electrochromic gel with high optical contrast in the visible and near-infrared

机译：新型电致变色凝胶，在可见光和近红外光中具有高光学对比度

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摘要

We present a new transparent electrochromic gel able to absorb simultaneously in the visible and in the near-infrared (NIR) region of the solar spectrum. The electrochromic mixture was prepared dissolving in a polymeric matrix a viologen as cathodic coloring material and a novel triarylamine derivative as anodic NIR active molecule. In connection with the reversible electrochemical behavior detected by cyclic voltammetry experiments, a reversible coloration was observed in the film. High optical contrast both in the visible and in the NIR was obtained adjusting the applied potential to moderate low values. Fast coloration times (around 5 s) to achieve 90% of the maximum optical contrast in the visible and NIR were measured, while the bleaching process occurred within 20 s.
机译：我们提出了一种新的透明电致变色凝胶，该凝胶能够同时吸收太阳光谱的可见光和近红外（NIR）区域。制备电致变色混合物，将紫精溶解为聚合物阴极着色材料，将新型三芳基胺衍生物溶解为阳极NIR活性分子。与通过循环伏安法实验检测到的可逆电化学行为有关，在膜中观察到可逆着色。将施加的电势调整为适中的低值，可获得可见光和NIR的高光学对比度。测量了快速着色时间（约5 s），以达到可见光和NIR的最大光学对比度的90％，而漂白过程发生在20 s内。

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