We utilized our in situ method for the one-step assembly of single-layer electrochromic devices (ECDs) with a 3,4-propylenedioxythiophene (ProDOT) acrylate derivative, and long-term stability was achieved. By coupling the electroactive monomer to the cross-linkable polymer matrix, preparation of the electrochromic ProDOT polymer can occur followed by UV cross-linking. Thus, we achieve immobilization of the unreacted monomer, which prevents any degradative processes from occurring at the counter electrode. This approach eliminated spot formation in the device and increased stability to over 10 000 cycles when compared to 500 cycles with conventional ProDOT devices wherein the monomer is not immobilized. The acrylated electrochromic polymer exhibits similar electrochromic properties as conventional ProDOT devices, such as photopic contrast (48% compared to 46%) and switch speed (both 2 s). This method can be applied to any one-layer electrochromic system where improved stability is desired.

中文翻译：

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用于延长单层电致变色器件寿命和光学性能的丙烯酸聚（3,4-丙烯二氧基噻吩）

我们利用原位方法与3,4-丙二氧基二氧噻吩（ProDOT）丙烯酸酯衍生物一步组装单层电致变色器件（ECD），并实现了长期稳定性。通过将电活性单体偶联到可交联的聚合物基质上，可以进行电致变色ProDOT聚合物的制备，然后进行UV交联。因此，我们实现了未反应单体的固定化，这防止了在对电极上发生任何降解过程。与不固定单体的常规ProDOT装置进行500次循环相比，这种方法消除了装置中的斑点形成，并增加了超过10000次循环的稳定性。丙烯酸酯化电致变色聚合物表现出与常规ProDOT器件类似的电致变色性能，例如明暗对比（48％比46％）和切换速度（均为2秒）。该方法可以应用于需要提高稳定性的任何一层电致变色系统。