Self-assembly in magnetic supramolecular hydrogels

Abstract

Most recent advances in the synthesis of supramolecular hydrogels based on low molecular weight gelators (LMWGs) have focused on the development of novel hybrid hydrogels, combining LMWGs and different additives. The dynamic nature of the noncovalent interactions of supramolecular hydrogels, together with the specific properties of the additives included in the formulation, allow these novel hybrid hydrogels to present interesting features, such as stimuli -responsiveness, gel-sol reversibility, self-healing and thixot-ropy, which make them very appealing for multiple biomedical and biotechnological applications. In particular, the inclusion of magnetic nanoparticles in the hydrogel matrix results in mag-netic hydrogels, a particular type of stimuli-responsive mate-rials that respond to applied magnetic fields. This review focuses on the recent advances in the development of mag-netic supramolecular hydrogels, with special emphasis in the role of the magnetic nanoparticles in the self-assembly pro-cess, as well as in the exciting applications of these materials.