Folate modified zinc ferrite nano-hollowspheres for drug delivery and intrinsic fluorescence

Abstract

Stimuli-responsive controlled release of drugs from metal complex devices has been receiving great attention, as it provides many advantages such as better delivery efficiency, selective binding. Here in, we report the synthesis of biocompatible ZnFe2O4nano-hollowspheres (NHSs) of diameter around 200nm and emergence of intrinsic multiple photoluminescence from cyan, green to red on modifying their surface with essential bio-molecule, like folic acid. The surface engineered NHSs also show excellent drug loading and releasing efficiency in different conditions.