Multicolor Electrochromic Dye-Doped Liquid Crystal Yolk–Shell Microcapsules

• DOI: 10.1021/acsami.0c09354
• Publication Date: 2020-06-08T09:07:15Z
• Authors: Mingfei Sheng; Liping Zhang; John Lawton West; Shaohai Fu
• Keywords: 02 engineering and technology; 0210 nano-technology

A new system of yolk–shell microcapsules containing two types dye-doped liquid crystals was prepared via seed emulsion polymerization in which the synthetic process mimicking plant respiration. The resulting demonstrated reversible low voltage-driven switching between multispectral colored and transparent states. Moreover, wearable multicolor electrochromic fibers based on calcium alginate were produced wet spinning to expand application crystal microcapsules. In addition its long-term optical stability, proposed cells also have satisfactory driving voltage values color change (4.8 9.0 V), are far lower than human body safety (12 V). We believe that potentially widely applicable smart windows, electronic paper, military camouflage clothing.