Journal
COLLOID AND POLYMER SCIENCE
Volume 290, Issue 12, Pages 1207-1213Publisher
SPRINGER
DOI: 10.1007/s00396-012-2696-9
Keywords
One-dimensional thermosensitive nanochains; Magnetic-field-induced (MFI) assembly; Precipitation polymerization; Fe3O4/P(NIPAM-MBA)
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Funding
- National Natural Science Foundation of China [51173146]
- National Basic Research Program of China [2010CB635111]
- Basic Research Foundation of Northwestern Polytechnical University [G9KY1020, JC201019]
- key programs of international technology cooperation of Shaanxi province [2011KW-12]
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One-dimensional (ID) magnetic thermosensitive Fe3O4/poly(N-isopropylacrylamide-N,N'-methylenebisacrylamide) (P(NIPAM-MBA)) peapod-like nanochains have been successfully synthesized by magnetic-field-induced precipitation polymerization using Fe3O4 as building blocks and P(NIPAM-MBA) as linker. Fe3O4 microspheres can be arranged with the direction of an external magnetic field in a line via the dipolar interaction between Fe3O4 microspheres and linked permanently via P(NIPAM-MBA) coating during precipitation polymerization. 1D magnetic Fe3O4/P(NIPAM-MBA) peapod-like nanochains can be oriented and aligned along the direction of the external magnetic field. More interestingly, Fe3O4 microspheres in each peapod were regularly arranged in a line and periodically separated through the P(NIPAM-MBA) layers with a visible interparticle spacing.
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