Fabrication of a magnetic helical mesostructured silica rod

Zhang, Lei, Qiao, Shi Zhang, Cheng, Lina, Yan, Zifeng and Lu, Gao Qing (Max) (2008) Fabrication of a magnetic helical mesostructured silica rod. Nanotechnology, 19 43: 1-7. doi:10.1088/0957-4484/19/43/435608


Author Zhang, Lei
Qiao, Shi Zhang
Cheng, Lina
Yan, Zifeng
Lu, Gao Qing (Max)
Title Fabrication of a magnetic helical mesostructured silica rod
Journal name Nanotechnology   Check publisher's open access policy
ISSN 0957-4484
1361-6528
Publication date 2008-10-22
Sub-type Article (original research)
DOI 10.1088/0957-4484/19/43/435608
Volume 19
Issue 43
Start page 1
End page 7
Total pages 7
Editor M. Reed
Place of publication Bristol, England
Publisher Institute of Physics Publishing
Collection year 2009
Language eng
Subject C1
100708 Nanomaterials
860899 Human Pharmaceutical Products not elsewhere classified
0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
0904 Chemical Engineering
1007 Nanotechnology
Formatted abstract
We report a one-step synthesis of magnetic helical mesostructured silica (MHMS) by self-assembly of an achiral surfactant, magnetic nanocrystals with stearic acid ligands and silicate. This core–shell structured material consists of an Fe3O4 superparamagnetic nanocrystal core and a highly ordered periodic helical mesoporous silica shell. We propose that the formation of the helical structure is induced by the interaction between the surfactant and dissociated stearic acid ligands. The MHMS obtained possesses superparamagnetism, uniform mesostructure, narrow pore size distribution, high surface area, and large pore volume. Furthermore, the drug release process is demonstrated using aspirin as a drug model and MHMS as a drug carrier in a sodium phosphate buffer solution.
© 2008 IOP Publishing Ltd
Keyword Mesoporous silica
Controlled release
Drug delivery
Nanoparticles
Spheres
Nanocomposite
Nanocrystals
Shell
Q-Index Code C1
Q-Index Status Confirmed Code
Additional Notes Published under "Materials: Synthesis or Self-Assembly"

 
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Created: Tue, 07 Apr 2009, 12:18:18 EST by Amanda Lee on behalf of School of Chemical Engineering