Malfatti, Luca and Marongiu, Daniela and Costacurta, Stefano and Falcaro, Paolo and Amenitsch, Heinz and Marmiroli, Benedetta and Grenci, Gianluca and Casula, Maria Francesca and Innocenzi, Plinio (2010) Writing self-assembled mesostructured films with in situ formation of gold nanoparticles. The Journal of Physical Chemistry. B, Vol. 22 (6), p. 2132-2137. eISSN 1520-5207. Article.
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We have developed an integrated technology that allows patterning and formation of gold-nanoparticles in self-assembled mesoporous films in a single step; this technique allows fabrication of patterned structures with high aspect ratios in a direct, simple, and reproducible way. We have used high intensity X-rays that interact with the mesoporous matrix through different processes, by removing the organic templates, increasing the polycondensation of the organic−inorganic silica network, and partially removing the methyl groups bonded in the hybrid matrix. The final material, after patterning and chemical etching, exhibits gold nanoparticles of few nanometers homogeneously dispersed in the porous matrix.
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