The development of high-efficiency organic electronic energy storage materials is a necessary prerequisite for modern intelligent and environmentally friendly devices. Given that polymer molecular structure is always closely related to its arrangement conformation, morphological attributes and performances. Here, we electrodeposited and characterized series poly(2,2′-bifuran) (P2Fu), poly(2,2′:5′,2′'-terfuran) (P3Fu), and poly(2,2′:5′,2′':5′',2′''-quaterfuran) (P4Fu) based furan heterocycle to understand the molecular structure induce the changes of optical and electronic properties. As expected, flexible free-standing films were polymerized at low potential with improved stability. By virtue of its favorable electronic structure and inherent electrochromic, the tailored P4Fu reveals its potential for dual-function electrochromic-supercapacitor (DES) applications via systematic cyclic voltammetric and galvanostatic techniques, showing noticeable multicolor, high coloration efficiency () of 330.5 cm C, and high specific capacitance (241.6F g/1.0 A g), which are much attractive than those of polythiophene derivatives, even superior to the heterocyclic counterparts. This is also the first time to explore the DES application potential of polyfuran. Furthermore, a DES device was successfully assembled by using P4Fu as the activation layers, which can monitor the energy storage level through color conversion. The research demonstrates an important step toward environmentally compatible electronics, and provides novel green material options for high-available organic smart devices.

中文翻译：

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用于双功能电致变色储能应用的柔性共轭聚呋喃

开发高效有机电子储能材料是现代智能、环保器件的必要前提。聚合物分子结构与其排列构象、形态属性和性能密切相关。在这里，我们电沉积并表征了系列聚(2,2'-联呋喃) (P2Fu)、聚(2,2':5',2''-特呋喃) (P3Fu) 和聚(2,2':5') ,2'':5'',2'''-quaterfuran) (P4Fu) 基于呋喃杂环来了解分子结构引起的光学和电子性质的变化。正如预期的那样，柔性自支撑薄膜在低电位下聚合，稳定性得到改善。凭借其良好的电子结构和固有的电致变色性，定制的P4Fu通过系统的循环伏安和恒电流技术揭示了其在双功能电致变色超级电容器（DES）应用中的潜力，显示出明显的多色性，高着色效率（）为330.5 cm C，和高比电容（241.6F g/1.0 A g），比聚噻吩衍生物更具吸引力，甚至优于杂环衍生物。这也是首次探索聚呋喃的DES应用潜力。此外，利用P4Fu作为激活层成功组装了DES器件，该器件可以通过颜色转换来监测能量存储水平。该研究展示了朝着环境兼容电子产品迈出的重要一步，并为高可用性有机智能设备提供了新颖的绿色材料选择。