Linear viologen polymer and preparation method thereof

The invention relates to the field of organic photoelectric functional materials, in particular to a linear viologen polymer and a preparation method thereof. The linear viologen polymer film prepared by a cyclic voltammetry method is extremely high in color change stability; meanwhile, through reasonable molecular structure design in the preparation process, the molecular structure of the synthesized linear viologen polymer can be regulated and controlled. In addition, by controlling the number of cycles in the polymerization process, linear viologen polymer films with different thicknesses can be prepared, and the thickness of the polymer film can be regulated and controlled. Meanwhile, the prepared linear viologen polymer can realize reversible color change under the voltage of 0-1.2 V, shows a higher contrast ratio, and has a wider application prospect in the field of electrochromism. 本发明涉及有机光电功能材料领域，具体涉及一种线性紫罗精聚合物及其制备方法。通过循环伏安法制备得到的线性紫罗精聚合物薄膜，变色稳定性极强；同时，通过在制备过程中合理的分子结构设计，可实现合成的线性紫罗精聚合物分子结构的可调控。此外，通过控制聚合过