Document Detail


Spherical polyelectrolyte brushes as a nanoreactor for synthesis of ultrafine magnetic nanoparticles.
MedLine Citation:
PMID:  22699278     Owner:  NLM     Status:  In-Data-Review    
Abstract/OtherAbstract:
Ultrafine magnetic nanoparticles (MNP, 1.4-5.8 nm) were generated within a nanoreactor of spherical polyelectrolyte brushes (SPB). SPB consist of a solid polystyrene (PS) core and densely grafted poly(acrylic acid) (PAA) chains. Due to strong chemical coordination between carboxyl groups in PAA and MNP surfaces, the obtained magnetic spherical polyelectrolyte brushes (MSPB) kept excellent stability and maintained pH sensitivity. The magnetic properties of MSPB were confirmed by a vibrating sample magnetometer (VSM). The size and the size dispersion of MNP can be modulated by varying adding sequences (conventional coprecipitation or reverse coprecipitation), or nanoreactor structure (with or without crosslinking). MNP content in MSPB could be adjusted by multicycle reactions. This new strategy makes it possible to synthesize ultrafine inorganic nanoparticles with tunable size in SPB.
Authors:
Yan Zhu; Kaimin Chen; Xiang Wang; Xuhong Guo
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Publication Detail:
Type:  Journal Article     Date:  2012-06-15
Journal Detail:
Title:  Nanotechnology     Volume:  23     ISSN:  1361-6528     ISO Abbreviation:  Nanotechnology     Publication Date:  2012 Jul 
Date Detail:
Created Date:  2012-06-15     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101241272     Medline TA:  Nanotechnology     Country:  England    
Other Details:
Languages:  eng     Pagination:  265601     Citation Subset:  IM    
Affiliation:
State Key Laboratory of Chemical Engineering, East China University of Science and Technology, Shanghai 200237, People's Republic of China.
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