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