Gold nanoparticles were obtained directly in solid polymer films by thermal decomposition of the [O(Au(PPh3))3][BF4] precursor molecularly dispersed in the polymer and by decomposition of microcrystals on different supports. The nanoparticles were characterized with transmission electron microscopy (TEM), scanning electron microscopy (SEM), UV-Vis spectroscopy, and wide-angle X-ray scattering (WAXS). In spite of high precursor concentration, the size of the obtained nanoparticles was similar to those prepared in diluted solutions.
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