Tunable UV-Responsive Organic−Inorganic Hybrid Capsules

Abstract

UV-responsive microcapsules consisting of polyelectrolyte multilayers, lipid bilayers, and SiO2−TiO2 with tunable release characteristics were fabricated by layer-by-layer assembly and sol−gel methods. Dye molecules were loaded by exploiting the temperature dependence of the permeability of the lipid bilayer membrane. The encapsulated dye was released on demand upon UV irradiation because of photocatalytic rupturing of the capsules.