| 초록 |
The self-assembly of colloidal particles provides an easy method to fabricate porous materials with large surface-to-volume ratio. Colloidal assemblies have been used as templates for organic and inorganic ordered macroporous materials. The colloidal crystals and their inverted structures are promising as photonic bandgap materials. Here, we fabricated colloidal crystals using monodisperse polystyrene particles. Then, porous opal lattice was infiltrated with titania. The titania deposition was performed at atmospheric pressure using a chemical vapor deposition (CVD). Finally, the continuous titania shell was coated on the polymer particles. By varying the synthesis conditions, the degree of the infiltration can be controlled, which enables us to engineer the optical properties of the materials. Finally, the titania inverse opals were produced after removal of the polymeric colloidal crystal template. |
