Azobenzene compounds have been widely used in many fields and through their response to light they can be used to regulate the properties of ordered structures. In this paper, sub-micrometer colloidal SiO2 spheres were prepared and azobenzene groups were grafted on the surface of SiO2 microspheres. The SiO2 microspheres grafted with azobenzene groups could self-assemble to form photosensitive photonic crystals, whose photonic bandgaps red-shifted as irradiated by UV light due to the structure change of the azobenzene groups.
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This work was financially supported by National Natural Science foundation of China (21975139).
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Li, C., Zhang, H., Xue, Q. et al. Photoresponsive photonic crystals constructed from azobenzene-grafted silica microspheres. Opt Quant Electron 53, 573 (2021). https://doi.org/10.1007/s11082-021-03233-y
- Photonic crystals
- Azobenzene compounds
- Photonic bandgaps
- Photo-responsive behavior