Abstract
A technique utilizing polyelectrolytes to assist in the self assembly of colloidal silica spheres into ordered crystallites is introduced. Techniques for coating silica spheres with poly(anilinesulfonic) acid, polypyrrole, and poly[2-methoxy-5-(2′-ethylhexyloxy)-1, 4-phenylenevinylene] (MEH-PPV) are described with a self assemble method to guide them into face centered cubic (FCC) opals and into thin films with star shaped opalescent patterns. Inverse gold photonic crystals constructed from silica opal templates were constructed by the heat conversion of gold chloride to metallic gold and inverse gold/ polypropylene composite photonic crystals were fabricated. Inverse conjugated polymer/ polypropylene composite photonic crystals were constructed with MEH-PPV, poly(anilinesulfonic) acid and polypyrrole. The photoluminescence from MEH-PPV/ polypropylene photonic crystals was blue shifted compared to a uniform MEH-PPV film. Chalcogenide was infiltrated into 1.5µm opals and inverse chalcogenide photonic crystals were fabricated.
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