Abstract
Smart textiles and clothing with highly controllable and tunable color changes are gaining interest because of their promising functionality. However, practical applications are still restricted by the lack of continuously processed long color-changing fibers that are suitable for industrial weaving. This work presents smart electrochromic (EC) fibers with long-range controllability and multi-environmental stability that were continuously prepared using custom-built equipment. By introducing various EC-active materials (viologens) and a unique device design (parallel dual-counter-electrode structure), multiple uniform and rapid color changes were achieved over long time ranges, including blue, magenta, green, and dull red. Furthermore, an electrochemical anticorrosive layer and outer polymer protective layer were used to enhance the electrochemical, mechanical, washing, irradiation, and thermal stabilities of the EC fibers. These fibers were knitted to form large-area, smart color-changing textiles and implanted into textiles with complex patterns to demonstrate two potential EC fiber applications in adaptive camouflage and wearable displays.
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