Preparation of polyaniline–Fe2O3 composite and its anticorrosion performance

Magnetic and microwave absorbing properties of polyaniline/γ-Fe2O3 nanocomposite

Synthesis and ferrimagnetic properties of novel Sm-substituted LiNi ferrite–polyaniline nanocomposite

Two strategies were employed to synthesize amino-functionalized multiwalled carbon nanotubes (MWNTs). In the first strategy, we grew poly(2-dimethylaminoethyl methacrylate) (PDMAEMA) from the surfaces of MWNTs by in situ atom transfer radical polymerization (ATRP), then allowed the polymer chains to react with methyl iodide to acquire cationic polyamine coated-carbon nanotubes (MWNT-PAmMeI). Three samples with different amounts of grafted polyamine were obtained. TGA measurements showed that the content of PDMAEMA was ca. 25, 60 and 80% by mass. The chemical structure, morphology and nanostructures of the polyamine-grafted MWNTs were confirmed by 1H NMR spectroscopy, SEM and TEM. In the second strategy, we prepared amino-functionalized MWNTs (MWNT-NH2) by reacting acyl chloride-containing MWNTs with para-phenylenediamine in the presence of pyridine. The resulting polyamine- and amino-functionalized MWNTs were then used as templates to load CdTe quantum dots (QDs) and Fe3O4 magnetic nanoparticles by the electrostatic self-assembly approach, affording MWNT/CdTe and MWNT/Fe3O4 nanohybrids. TEM, EDS and XRD showed the structure and components of the obtained nanohybrids. Luminescence measurements indicated that the MWNT/CdTe complexes based on MWNT-PAmMeI could retain the luminescent properties of the QDs, which showed an emission peak at a wavelength of 550 nm, while the photoluminescence (PL) of the MWNT-NH2/CdTe composites can be hardly detected.

Multiamino-functionalized carbon nanotubes and their applications in loading quantum dots and magnetic nanoparticles

Polyaniline (PANI) nanofibres or nanotubes (180?200?nm in diameter) containing Fe3O4 nanoparticles (diameter ?10?nm) and PANI-coated ?-Fe2O3 nanoneedles (40?80?nm in diameter and 500?600?nm in length) were prepared by in?situ doping polymerization in the presence of H3PO4 as a dopant. The composite nanostructures exhibited electrical?magnetic properties that are dependent on the structure and the content of the magnetic nanoparticles used. The formation mechanism of the self-assembled composite nanostructures is discussed.

http://iopscience.iop.org/article/10.1088/0957-4484/16/12/016/pdf

Electromagnetic functionalized polyaniline nanostructures

Synthesis and Characterization of Conducting Polyaniline/γ-Fe2O3 Magnetic Nanocomposite

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Synthesis and Characterization of Conducting Polyaniline/γ-Fe2O3 Magnetic Nanocomposite