An Angle-Independent Multi-Color Display Electro-Responsive Hydrogel Film

In nature, some organisms have the ability to camouflage adapt environmental changes; they blend with environment by changing their skin colors. Such a phenomenon is of great significance for research adaptive materials. this study, we propose novel design scheme study angle-independent photonic materials and successfully prepare an electrically tunable multi-color display inverse opal gel (IOPG). After photopolymerization hydroxyethyl methacrylate ionizable monomer acrylic acid (AA) in long-range disordered template etching, obtained, presenting single structural color. The responsive color changes can be achieved at different angles. AA-IOPG from green blue-green when applying +4 V bias voltage orange −4 voltage. electrochromism mainly due local pH change caused water electrolysis under voltage, which leads swelling ratio. shows high tunability durability through repeated opposite tests, indicating that it promising conductive material.