Surfactant free superparamagnetic iron oxide nanoparticles for stable ferrofluids in physiological solutions. Issue 14 (12th January 2015)

• Record Type: Journal Article
• Authors: Mandel, K.; Straßer, M.; Granath, T.; Dembski, S.; Sextl, G.
• Is Part Of: Chemical communications. Volume 51:Issue 14(2015)
• Page Start: 2863
• Page End: 2866
• Publication Date: 2015-01-12
• Subjects: Chemistry -- Periodicals; 540
• DOI: 10.1039/c4cc09277e
• Languages: English
• ISSNs: 1359-7345

Abstract

Abstract : Ferrofluids of superparamagnetic Fe3 O4 nanoparticles with "patchy" silica shell are stable over a wide pH range and in physiological solutions. Abstract : A process is reported to obtain a nanoparticle sol from co-precipitated iron oxide particles without using any surfactant. The sol – a true ferrofluid – is not only stable over a wide range of pH but also in physiological solutions. This is a decisive step towards biomedical applications where nanoparticle agglomeration could so far only be prevented by using unwanted surfactants.