Smart hydrogels with wide visible color tunability and highly tunable color saturations and transmittances are created. The hydrogels with flexible light-interacting configuration changes, can harvest energy from selected wavelengths of visible light to display complementary colors across a wide visible range. The hydrogels are used as optical filters and colorimetric sensors to demonstrate their versatility.
- Guo-Yu Wen
- Xing-Long Zhou
- Liang-Yin Chu
