Preparation and Adsorption Photocatalytic Properties of PVA/TiO Colloidal Photonic Crystal Films.

Polyvinyl alcohol (PVA)/TiO/colloidal photonic crystal (CPC) films with photocatalytic properties are presented, where TiO nanoparticles were introduced into the PVA gel network. Such PVA/TiO/CPC films possess three-dimensional periodic structures that are supported with a PVA/TiO composite gel. The unique structural color of CPCs can indicate the process of material preparation, adsorption, and desorption.

Non-gelated polymeric photonic crystal films.

A rapid curing method for the preparation of colloidal photonic crystal films is presented. Firstly, a colloidal crystal array template was prepared by self-assembly of nanospheres, and then a dilute polymer solution was poured into the gap of the template. Then the composite photonic film was obtained as the polymer solution was cured.

Photonic Crystal-Embedded Molecularly Imprinted Contact Lenses for Controlled Drug Release.

As a noninvasive eye disease detection and drug delivery device, contact lenses can improve eye bioavailability and enable continuous drug delivery. In order to monitor the release of drugs in real time, molecularly imprinted contact lenses (MICLs) based on photonic crystals (PCs) were prepared for the treatment of diabetes-related diseases. The specific adsorption of molecularly imprinted polymers on dexamethasone sodium phosphate (DSP) increased the drug loading and optimized the drug release behavior.