Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7870891 | Materials Science and Engineering: C | 2007 | 5 Pages |
Abstract
The synthesis and characterization of Au nanoparticle-Pt(II)diethynylbiphenyl polymer nanocomposites are reported. Stable dodecanethiol-functionalized Au nanoclusters (2 nm < diameter < 10 nm) were obtained following two colloidal routes: two-phase aqueous/organic and one-phase organic methods. The size, shape and crystalline structure of the nanoparticles were determined by X-ray diffraction and electron microscopy. The hybrid nanocomposite material, obtained by dispersion of Au nanocrystals in the bulk polymer, was investigated by transmission electron microscopy, X-ray photoelectron spectroscopy and photoluminescence spectroscopy. The optical spectroscopy measurements show that the characteristic polymer PL emission at λ = 402 nm is quenched if the nanocomposite is doped with small sized AuNPs (â¼Â 3 nm), however, if larger AuNPs (â¼Â 9 nm) are dispersed in the nanocomposite, an enhanced PL emission occurs.
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Authors
F. Vitale, L. Mirenghi, E. Piscopiello, G. Pellegrini, E. Trave, G. Mattei, I. Fratoddi, M.V. Russo, L. Tapfer, P. Mazzoldi,