Georgia C. Papaefthymiou

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The development of self-assembled magnetic CoFe 2 O 4 nanoparticles within polymer matrices at room temperature is reported. Diblock copolymers consisting of poly ͑norbornene͒ and poly ͑norbornene-dicarboxcylic acid͒ ͑NOR/NORCOOH͒ were synthesized. The self-assembly of the mixed metal oxide within the NORCOOH block was achieved at room temperature by(More)
A novel polyiron oxo complex, [FeIII4FeII8(O)2(OCH3)18(O2CCH3)6(CH3OH) 4.67] (1), has been prepared from ferrous acetate and lithium methoxide in methanol by slow addition of dioxygen. The three-dimensional close-packed layered structure found in 1 closely mimics that proposed for the inorganic core in the iron storage protein ferritin. The Mössbauer(More)
Dermal granules containing hydrous ferric oxide cores from Molpadia intermedia were studied by Mössbauer spectroscopy from 1.5 to 300 K and in magnetic fields up to 80 kOersted at 4.2 K. A magnetic phase transition to an antiferromagnetically ordered state is observed at 10 K. The results are compared with the magnetic behavior of micellar cores of ferritin(More)
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