Luminescent core-shell photonic crystals from poly(phenylene ethynylene) coated silica spheres |
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Authors: | Kim Kyungkon Webster Scott Levi Nicole Carroll David L Pinto Mauricio R Schanze Kirk S |
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Institution: | Center for Nanotechnology and Molecular Materials, Department of Physics, Wake Forest University, Winston-Salem, North Carolina 27109, USA. |
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Abstract: | We describe the preparation and characterization of a photonic crystal filled with a luminescent conjugated polyelectrolyte, sulfonated poly(phenylene ethynylene). The conjugated polymer was coated onto the nanospheres by the layer-by-layer method and assembled directly into a fluorescent opal structure avoiding the defects associated with post-filling schemes. These structures exhibit strong angle-dependent luminescent properties. By using multiple layers, we further demonstrate control over the emissive bands of the opal. |
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