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Superparamagnetic Ironoxide Nanoparticles via Ligand Exchange Reactions: Organic 1,2-Diols as Versatile Building Blocks for Surface Engineering
Joint Authors
Weinstabl, Harald
Sachsenhofer, Robert
Binder, Wolfgang H.
Source
Issue
Vol. 2008, Issue 2008 (31 Dec. 2008), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2008-07-06
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
A method for the preparation of ligand-covered superparamagnetic iron oxide nanoparticles via exchange reactions is described.
1,2-diol-ligands are used to provide a stable binding of the terminally modified organic ligands onto the surface of γ-Fe2O3-nanoparticles (r∼4 nm).
The 1,2-diol-ligands are equipped with variable terminal functional groups (i.e., hydrogen bonding moieties, azido- bromo-, fluorescent moieties) and can be easily prepared via osmium tetroxide-catalyzed 1,2-dihydroxylation reactions of the corresponding terminal alkenes.
Starting from octylamine-covered γ-Fe2O3-nanoparticles, ligand exchange was effected at 50∘C over 24–48 hours, whereupon complete ligand exchange is taking place as proven by thermogravimetric (TGA)- and IR-spectroscopic measurements.
A detailed kinetic analysis of the ligand exchange reaction was performed via TGA analysis, demonstrating a complete ligand exchange after 24 hours.
The method offers a simple approach for the generation of various γ-Fe2O3-nanoparticles with functional organic shells in a one-step procedure.
American Psychological Association (APA)
Binder, Wolfgang H.& Weinstabl, Harald& Sachsenhofer, Robert. 2008. Superparamagnetic Ironoxide Nanoparticles via Ligand Exchange Reactions: Organic 1,2-Diols as Versatile Building Blocks for Surface Engineering. Journal of Nanomaterials،Vol. 2008, no. 2008, pp.1-10.
https://search.emarefa.net/detail/BIM-988096
Modern Language Association (MLA)
Binder, Wolfgang H.…[et al.]. Superparamagnetic Ironoxide Nanoparticles via Ligand Exchange Reactions: Organic 1,2-Diols as Versatile Building Blocks for Surface Engineering. Journal of Nanomaterials No. 2008 (2008), pp.1-10.
https://search.emarefa.net/detail/BIM-988096
American Medical Association (AMA)
Binder, Wolfgang H.& Weinstabl, Harald& Sachsenhofer, Robert. Superparamagnetic Ironoxide Nanoparticles via Ligand Exchange Reactions: Organic 1,2-Diols as Versatile Building Blocks for Surface Engineering. Journal of Nanomaterials. 2008. Vol. 2008, no. 2008, pp.1-10.
https://search.emarefa.net/detail/BIM-988096
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-988096