Assembly of Poly(vinylphosphonic acid)-Based Double Hydrophilic Block Copolymers by Gadolinium Ions for the Formation of Highly Stable MRI Contrast Agents
Karolina H. Markiewicz, Laurence Marmuse, Margaux Mounsamy, Claire Billotey, Mathias Destarac, Christophe Mingotaud, Jean‐Daniel Marty
Abstract
Mixing double-hydrophilic block copolymers containing a poly(vinylphosphonic acid) block with gadolinium ions in water leads to the spontaneous formation of polymeric nanoparticles. With an average diameter near 20 nm, the nanoparticles are stable after dilution or change of pH and ionic strength. High magnetic relaxivities were measured in vitro, and in vivo magnetic resonance imaging on rats demonstrates the high potential of such polymeric assemblies.
Topics & Concepts
CopolymerGadoliniumIonic strengthNanoparticleMRI contrast agentMaterials scienceMagnetic resonance imagingIonic bondingIonPolymer chemistryMagnetic nanoparticlesChemistryNuclear magnetic resonanceChemical engineeringAqueous solutionNanotechnologyPolymerOrganic chemistryComposite materialRadiologyMetallurgyMedicineEngineeringPhysicsLanthanide and Transition Metal ComplexesAdvanced MRI Techniques and ApplicationsAdvanced NMR Techniques and Applications