Fabrication of a nanostructured gold-polymer composite material |
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Authors: | K Mallick M Witcomb M Scurrell |
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Institution: | (1) Molecular Sciences Institute, School of Chemistry, University of the Witwatersrand, Private Bag 3, WITS, 2050, South Africa;(2) Electron Microscope Unit, University of the Witwatersrand, Private Bag 3, WITS, 2050, South Africa |
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Abstract: | A facile synthesis route is described for the preparation of a poly-(o-aminophenol)-gold nanoparticle composite material by polymerization of o-aminophenol (AP) monomer using HAuCl4 as the oxidant. The synthesis was carried out in a methanol medium so that it could serve a dual solvent role, a solvent
for both the AP and the water solution of HAuCl4. It was found that oxidative polymerization of AP leads to the formation of poly-AP with a diameter of 50±10nm, while the
reduction of AuCl4
- results in the formation of gold nanoparticles (∼ 2nm). The gold nanoparticles were uniformly dispersed and highly stabilized
throughout the macromolecular chain that formed a uniform metal-polymer composite material. The resultant composite material
was characterized by means of different techniques, such as UV-vis, IR and Raman spectroscopy, which offered the information
about the chemical structure of polymer, whereas electron microscopy images provided information regarding the morphology
of the composite material and the distribution of the metal particles in the composite material. |
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Keywords: | 78 66 Qn Polymers organic compounds 78 66 Sq Composite materials 78 67 Bf Nanocrystals and nanoparticles |
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