A Thermally Adjustable Multicolor Photochromic Hydrogel
- 19 February 2007
- journal article
- research article
- Published by Wiley in Angewandte Chemie-International Edition
- Vol. 46 (10), 1688-1692
- https://doi.org/10.1002/anie.200603554
Abstract
A rainbow of possibilities: A porous polymer gel undergoes light-triggered rapid two-state switching between two arbitrary structural colors at a controlled temperature (see picture; “on”: upon UV irradiation, “off”: in the dark). This switching is attributed to a change between two volume states. As the temperature also contributes to the degree of swelling of the gel, the color of the gel can be tuned thermally over a wide range of wavelengths.Keywords
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