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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 …
Springer International Publishing
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