双金属-超分子聚合物电致变色纤维的制备及机理

Because the electrochromic fibers have the important application prospect in military camouflage, in this project, Cu/Co and Cu/Fe bimetallo-supramolecular polymers which can change colors among transparent-grass green-earth yellow and transparent-grass green-sea blue respectively will be used as electrochromic active layers, and the reflective electrochromic fibers with structure of FTO/polyester fiber‖bimetallo-supramolecular polymer‖PMMA/PC-LiClO4‖FTO will be prepared using layer-by-layer assembly technology. The research will focus on the relationships and adjust regularities between metal ion ratios and electrochromic properties of bimetallo-supramolecular polymers, and interfacial interaction and storage, shift and transmission mechanism of electric charges and ions among electrochromic layers in the reflective electrochromic fibers. The electrochromic fibers with high contrast, fast response, high coloration efficiency, good cyclic stability and multi-color display will finally be obtained. Furthermore, the relationship between organizing structure and spectral reflection characteristic of electrochromic textile will be explored to provide theoretical and experimental basis for its military application.

基于电致变色纤维在军事伪装上的重要应用前景，本项目拟以在透明色-草绿色-土黄色和透明色-草绿色-海蓝色之间变色的Cu/Co和Cu/Fe双金属-超分子聚合物为电致变色活性层，采用层-层组装技术，制备结构为FTO/涤纶‖双金属-超分子聚合物‖PMMA/PC-LiClO4‖FTO反射式电致变色纤维；重点研究金属离子配比与双金属-超分子聚合物电致变色性能的关系调控规律；研究反射式电致变色纤维中电致变色膜层间的界面作用，电荷及离子在界面的储存、迁移和传输机理，获得对比度大、快速响应、着色效率高、循环稳定性好的多色显示电致变色纤维，并探索电致变色织物的组织结构与其光谱反射特性的关系，为其在军事上的应用提供理论和实验基础。

能够主动改变颜色的纤维和织物在军事伪装和民用均具有重要的应用前景。本项目制备出多种对比度高、颜色鲜艳、快速响应、着色效率高、循环稳定性好的金属超分子聚合物（FeL、FeL3,RuL,CuL,Cu/FeL），并以其为电致变色活性层，构筑了全固态、柔性和织物结构的系列电致变色器件，其具有良好的电致变色性能。优化了电致变色器件中的关键材料--复合凝胶电解质的制备工艺，得到性能优异的复合凝胶电解质，研究了SiO2的尺寸效应对电致变色器件性能的改进作用，发现150nm的SiO2所得到的复合凝胶电解质具有最优的导电性能和电化学性能。并探索了可在绿黄之间变色的电热致变色织物和服装的设计和制备，初步得到的样品和样服性能良好，有望获得实际应用。项目所得研究结果丰富了电致变色理论，对电致变色器件的实用化提供了理论和实验基础。