Silica Polymeric Networks Templated with D-Fructose – as Host Matrices for Natural Extracts Immobilization

摘要

In the present paper a non-surfactant templating route has been employed to preparenew fluorescence nanostructured materials, by combining some natural organicmolecules present in vegetal extracts with three-dimensional silica and hybridsilica-silsesquioxane networks. The results obtained clearly indicated that organicchromophores like flavonoid compounds from two extracts with bio-active principles(orange peel extract and ornamental bush extract) can be efficiently immobilised inthe host, silica and hybrid matrices, using D-fructose as template. The confirmationof immobilization process was demonstrated by extensive characterization offinal materials, achieved based on spectroscopy technique, fluorescence intensitymeasurements and transmission electron microscopy.