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Photoresponsive photonic crystals constructed from azobenzene-grafted silica microspheres

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  • Key Words:LIQUID-CRYSTAL; SENSOR; CARGO

  • Abstract: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.

  • Volume:53

  • Issue:10

  • Translation or Not:no

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