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Gold nanocrystals were formed and grown in simultaneously polymerizing hybrid organic–inorganic films. For the preparation of Au containing films, tetraethyl orthosilicate and methacryloxypropyltrimethoxysilane were separately hydrolyzed and the resulting sols were mixed, followed by the addition of a photoinitiator and a NaAuCl4 solution in methanol. The resulting solutions were spin-coated onto glass-substrates, and the so-formed films were irradiated with a solar simulator at powers ranging from 200 to 800 W. The irradiation resulted in simultaneous polymerization of the films and formation of gold nanoparticles. The irradiated films were characterized by x-ray diffraction measurements, ultraviolet–visible optical absorption spectroscopy and transmission electron microscopy studies. After irradiation at 800 W, the transmission electron microscopy experiments showed the presence of homogeneously …
Cambridge University Press
Publication date: 
1 May 2005

Mauro Epifani, Elvio Carlino, Davide Furlanetto, Cinzia Giannini, Patrizia Imperatori

Biblio References: 
Volume: 20 Issue: 5 Pages: 1287-1294
Journal of materials research