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- W2057871251 abstract "Well-defined diblock copolymers of bicyclo[2.2.1]hept-5-ene-2-carboxylic acid oxiranylmethyl ester, having both anchoring and steric stabilizing blocks in a 1:1 ratio, have been prepared by ring-opening metathesis polymerization (ROMP). The epoxy-containing block copolymer stabilized in situ generated iron oxide (γ-Fe2O3) nanoparticles. The epoxy ester group provided strong chelation between the iron-oxide nanoparticle and the polymeric siderophores, producing a stable magnetic nanocomposite. The polymers were characterized by 1H NMR, GPC, TGA, and DSC. The morphology and crystalline structure of the maghemite−block copolymer nanocomposites were evaluated with TEM and XRD, revealing highly crystalline, monodisperse γ-Fe2O3 nanoparticles with an average size of 3−5 nm. Interactions between the maghemite nanoparticles and the polymer were observed by FTIR. SQUID magnetometric analysis of the nanocomposites demonstrated superparamagnetism at room temperature with high saturation magnetization." @default.
- W2057871251 created "2016-06-24" @default.
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- W2057871251 date "2009-11-11" @default.
- W2057871251 modified "2023-10-09" @default.
- W2057871251 title "Block Copolymer-Mediated Formation of Superparamagnetic Nanocomposites" @default.
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- W2057871251 doi "https://doi.org/10.1021/cm902854d" @default.
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