期刊
MATERIALS SCIENCE & ENGINEERING C-BIOMIMETIC AND SUPRAMOLECULAR SYSTEMS
卷 27, 期 5-8, 页码 1300-1304出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.msec.2006.06.041
关键词
nanocomposites; gold nanoparticles; organometallic polymers; optical properties
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 lambda=402 nm is quenched if the nanocomposite is doped with small sized AuNPs (similar to 3 nm), however, if larger AuNPs (similar to 9 nm) are dispersed in the nanocomposite, an enhanced PL emission occurs. (c) 2006 Elsevier B.V All rights reserved.
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