Title

Synthesis, Magnetic Characterization, and Sensing Applications of Novel Dextran-Coated Iron Oxide Nanorods

Authors

Authors

S. Nath; C. Kaittanis; V. Ramachandran; N. S. Dalal;J. M. Perez

Comments

Authors: contact us about adding a copy of your work at STARS@ucf.edu

Abbreviated Journal Title

Chem. Mat.

Keywords

MODIFIED SUPERPARAMAGNETIC NANOPARTICLES; MOLECULAR-INTERACTIONS; CDSE; NANOCRYSTALS; RELAXATION; GROWTH; PARTICLES; UNIFORM; SHAPE; Chemistry, Physical; Materials Science, Multidisciplinary

Abstract

Monodisperse, water-soluble dextran-coated iron oxide (Fe(3)O(4)) nanorods were synthesized using a facile and scalable approach. Our room temperature method involves the mixing of an acidic solution of iron salts with a basic solution of ammonium hydroxide to facilitate initial formation of iron oxide crystals. The stability, crystallinity, and shape of these nanorods depends on the time of addition of the dextran, as well as the degree of purity of the polymer. The as-synthesized nanorods exhibit unique magnetic properties, including superparamagnetic behavior and high spin-spin water relaxivity (R2). Additionally, they possess enhanced peroxidase-like activity when compared to those reported in the literature for spherical iron oxide nanoparticles. Thus, this high yield synthetic method for polymer-coated iron oxide nanorods will expedite their use in applications from magnetic sensors, devices, and nanocomposites with magnetic and catalytic properties.

Journal Title

Chemistry of Materials

Volume

21

Issue/Number

8

Publication Date

1-1-2009

Document Type

Article

Language

English

First Page

1761

Last Page

1767

WOS Identifier

WOS:000265412400046

ISSN

0897-4756

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