pH-responsive hierarchical transformation of charged lipid assemblies within polyelectrolyte gel layers with applications for controlled drug release and MR imaging contrast

J Mater Chem B. 2014 Aug 21;2(31):4988-4992. doi: 10.1039/c4tb00771a. Epub 2014 Jul 3.

Abstract

A cationic lipid-embedded poly(acrylic acid) (PAAc) gel layer coated on chitosan/superparamagnetic iron oxide nanoparticle (SPION) nanohybrid surfaces effectively modulates drug release and MR imaging contrast by pH-responsive morphological transformation and hierarchical alignment of the lipid assemblies.