title: Luminescent core-shell photonic crystals from poly(phenylene ethynylene) coated silica spheres.
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.
authors.affiliation: Center for Nanotechnology and Molecular Materials, Department of Physics, Wake Forest University, Winston-Salem, North Carolina 27109, USA.
authors.forename: Kyungkon
authors.initials: K
authors.lastname: Kim
authors.forename: Scott
authors.initials: S
authors.lastname: Webster
authors.forename: Nicole
authors.initials: N
authors.lastname: Levi
authors.forename: David L
authors.initials: DL
authors.lastname: Carroll
authors.forename: Mauricio R
authors.initials: MR
authors.lastname: Pinto
authors.forename: Kirk S
authors.initials: KS
authors.lastname: Schanze