Please use this identifier to cite or link to this item: https://doi.org/10.1021/cm900268z
Title: Water-dispersible spherically hollow clusters of magnetic nanoparticles
Authors: Xia, H.-B.
Foo, P.
Yi, J. 
Issue Date: 23-Jun-2009
Citation: Xia, H.-B., Foo, P., Yi, J. (2009-06-23). Water-dispersible spherically hollow clusters of magnetic nanoparticles. Chemistry of Materials 21 (12) : 2442-2451. ScholarBank@NUS Repository. https://doi.org/10.1021/cm900268z
Abstract: We reported the synthesis of various water-dispersible clusters of magnetic nanoparticles by self-assembly of a cyclodextrin-polymer surfactant (CD-polymer) complex under one-pot reaction in an aqueous medium. Several polymer surfactants are selected to study their effects on size and morphology of magnetite nanoparticle clusters. They are polyethylene glycol (n) nonylphenyl ether series, NPE n (wheren) 5, 9, 30), Brij-97, and Triton X-114. The effect of self-assembly of CD-polymer complexes, which were made up of hydrophilic and hydrophobic groups from the polymer surfactants with CDs, on the cluster formation was also investigated. Depending on the reaction conditions, the structure of the clusters of magnetic nanoparticles can be tuned from mesoporous, to hollow, and to solid by the judicious selection of polymer surfactants. It was also found that an increase in the number of hydrophilic groups of the polymer surfactants caused the size of the Fe 3O 4 nanoparticle clusters to increase. In addition, the self-assembled clusters of the Fe 3O 4 nanoparticle cannot be prepared if the hydrophobic groups of the polymer surfactants cannot be effectively associated with CDs. The Brunauer-Emmett-Teller surface areas and magnetic properties of these nanostructured spherical clusters of Fe 3O 4 nanoparticles were also measured. Other characterizations including Fourier transform infrared, X-ray diffraction, and thermogravimetric analysis were also investigated.
Source Title: Chemistry of Materials
URI: http://scholarbank.nus.edu.sg/handle/10635/86842
ISSN: 08974756
DOI: 10.1021/cm900268z
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

32
checked on May 27, 2018

WEB OF SCIENCETM
Citations

32
checked on Apr 10, 2018

Page view(s)

42
checked on Apr 20, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.