An Electro- and Thermochromic Hydrogel as a Full-Color Indicator


  • Y.T. gratefully acknowledges financial support from the Ministry of Education, Culture, Sports, Science, and Technology, Japan, through a Grant-in-Aid for Scientific Research on Priority Areas (Nos. 417 and 438). NIPA was kindly provided by the KOHJIN Company. Supporting Information is available online from Wiley InterScience or from the author.


original image

Electric-field-triggered “two-state switching” between two arbitrary structural colors (see figure) in the entire visible region at certain temperatures is shown by a stimuli-responsive chromic hydrogel. The external rapid tuning in the structural color of this hydrogel is successfully achieved by introducing a periodically ordered interconnecting porous structure.