Multicolor and Multistage Response Electrochromic Color-Memory Wearable Smart Textile and Flexible Display

• Published in: ACS applied materials & interfaces Vol. 13; no. 10; pp. 12313 - 12321
• Main Authors: Wang, Chengcheng, Jiang, Xiaojun, Cui, Peng, Sheng, Mingfei, Gong, Xiaodan, Zhang, Liping, Fu, Shaohai
• Format: Journal Article
• Language: English
• Published: United States American Chemical Society 17.03.2021
• Subjects: color; discoloration; electric potential difference; energy efficiency; fabrics; Organic Electronic Devices; philosophy; microcapsules; smart textiles; electrochromic; color-memory; flexible display
• ISSN: 1944-8244; 1944-8252; 1944-8252
• DOI: 10.1021/acsami.1c01333

Electrochromic materials have great application in soft displays and devices, but the application of ideal electrochromic textiles still faces challenges owing to the inconvenience of a continuous power supply. Here, electrochromic color-memory microcapsules (ECM-Ms-red, -yellow, and -blue) with a low drive voltage (2.0 V), coloration efficiency (921.6 cm2 C–1), a practical response rate (34.4 s–1), multistage response discoloration, and good color-memory performance (>72 h) and reversibility (≥1000 cycles) are developed. The color-memory performance is controlled by the energy difference of oxidation–reduction reactions. A multicolor and multistage response electrochromic color-memory wearable smart textile and flexible display are developed that are convenient and energy-efficient for application. The design philosophy of color-memory based on controllable energy difference of reactions has great potential application in sensors and smart textiles.