Journal
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
Volume 54, Issue 51, Pages 15368-15373Publisher
WILEY-V C H VERLAG GMBH
DOI: 10.1002/anie.201507503
Keywords
amorphous arrays; colloids; hydrogels; polymers; structural colors
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Funding
- Ministry of Education, Culture, Sports, Science and Technology (MEXT) [22107012, 2206]
- Canon Foundation
- Grants-in-Aid for Scientific Research [15H02200, 26630320, 22107012] Funding Source: KAKEN
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We report the preparation of thermally tunable hydrogels displaying angle-independent structural colors. The porous structures were formed with short-range order using colloidal amorphous array templates and a small amount of carbon black (CB). The resultant porous hydrogels prepared using colloidal amorphous arrays without CB appeared white, whereas the hydrogels with CB revealed bright structural colors. The brightly colored hydrogels rapidly changed hues in a reversible manner, and the hues varied widely depending on the water temperature. Moreover, the structural colors were angle-independent under diffusive lighting because of the isotropic nanostructure generated from the colloidal amorphous arrays.
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