Photophysical properties of phenosafranine (PHNS) adsorbed on the TiO2-incorporated zeolite-Y

Investigation of photophysical properties of phenosafranine dye ion-exchanged with zeolite-Y samples has been carried out to understand the host-guest interactions of the dye and the zeolite. Photosensitization of titanium dioxide, encapsulated in the supercages and anchored on the external surface of the zeolite-Y by the visible light excited dye molecules, has been studied using steady state and time resolved fluorescence techniques. Titanium dioxide loaded zeolites at the external surface and at the interior of the supercages are found to show different characteristics in the sensitization process.