Two‐Step Directional Surface Modification of Iron Oxide Nanoparticles with Protected Siloxanes. Issue 1 (15th September 2014)

• Record Type: Journal Article
• Authors: Bloemen, Maarten; Sutens, Ben; Brullot, Ward; Gils, Ann; Geukens, Nick; Verbiest, Thierry
• Is Part Of: ChemPlusChem. Volume 80:Issue 1(2015:Jan.)
• Page Start: 50
• Page End: 53
• Publication Date: 2014-09-15
• Subjects: iron oxide -- nanoparticle multilayers -- nanoparticles -- siloxane -- surface chemistry; Chemistry -- Periodicals; 540.5
• DOI: 10.1002/cplu.201402283
• Languages: English
• ISSNs: 2192-6506

Abstract

Abstract: Successful surface modification of iron oxide nanoparticles is crucial for their usage in applications. However, ligand exchange methods introducing siloxanes have several drawbacks. Presented here is a novel approach for the surface modification of iron oxide nanoparticles by making use of siloxanes, synthesized by thiol‐ene click chemistry, with protected functional groups. Afterwards the ligands are deprotected to liberate their functionality. This approach solves the issues related to ligand orientation and colloidal stability during surface modification. Abstract : Nanoparticle functionality : Iron oxide nanoparticles are functionalized by protected functional siloxanes. The functional group is deprotected on the nanoparticle itself, solving multiple issues related to the use of siloxanes. This procedure is highly reproducible and not limited to the discussed functionalities.