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Citation: Wang Xiaoya, Han Dong. Tuning the Refractive Indexes and Structural Colors of Colloidal Photonic Crystals by Doping TiO₂ Nanoparticles into Polystyrene Microspheres[J]. Chemistry, ;2018, 81(10): 909-913. shu

Tuning the Refractive Indexes and Structural Colors of Colloidal Photonic Crystals by Doping TiO₂ Nanoparticles into Polystyrene Microspheres

Wang Xiaoya ¹ ,
Han Dong ^2,,

1.
Beijing No. 171 Middle School, Beijing 100013
2.
National Center for Nanoscience and Technology, Chinese Academy of Sciences, Beijing 100190

Corresponding author: Han Dong, dhan@nanoctr.cn
Received Date: 12 July 2018
Accepted Date: 9 August 2018

Figures(6)

Colloidal photonic crystals have been widely developed due to their novel optical properties, easy-preparation and low-cost. The structural color of colloidal photonic crystals is highly related to the refractive index and size of the microspheres. But the structural color is tuned mainly based on the controlling of the size instead of the refractive index of the microspheres. Herein, we developed a novel strategy to tune the refractive indexes and thus the structural colors of colloidal photonic crystals by doping different amounts of TiO₂ nanoparticles into polystyrene (PS) microspheres. Finally, colorful photonic crystal patterns were successfully printed with the aqueous colloid solution of these as-prepared TiO₂-PS microspheres as ink. This facile fabrication strategy will be easy to be extended to other composite microspheres by doping different inorganic nanoparticles with different refractive indexes.
- Colloidal photonic crystals,
- Structural color,
- Doping,
- TiO₂ nanoparticles,
- Polystyrene microspheres
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