Abstract
Hybrid organic–inorganic films containing layered organosilicate nanocrystals have been obtained through self-organization from aqueous precursor sols containing 3-glycidoxypropyltrimethoxysilane. Diethoxydiphenylsilane has been added, in different amounts, to the precursor sol containing 3-glycidoxypropyltrimethoxysilane to prepare hybrid films with the ordered nanostructures. The effect of aging time of the precursor sol has been studied preparing different samples from sols aged up to 8 days; the formation of crystalline layered films has been observed in the samples obtained from sols of higher aging time. The hybrid films have been characterized by gracing incidence X-ray diffraction, Raman and Fourier transform infrared spectroscopy, transmission electron microscopy and UV–Vis spectroscopy. The change of the surface contact angle as a function of sol aging time and composition has been also measured. The capability of the films to be used in devices through lithographic techniques has been tested by writing the films with direct exposition to deep X-ray lithography and soft lithography with micromolds; patterns of different geometries with a thickness up to 100 μm have been obtained.
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Acknowledgments
Cristiana Figus acknowledges Regione Sardegna (RAS) for funding her work within the project PO Sardegna FSE 2007-20013 through L.R.7/2007 “Promozione della ricerca scientifica e dell’innovazione tecnologica in Sardegna”. Massimo Piccinini is acknowledged for Raman measurements.
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Figus, C., Takahashi, M., Casula, M. et al. Effect of diphenyldiethoxysilane on the self-organized formation of nanocrystalline layered organosilicates in organic–inorganic hybrid films. J Sol-Gel Sci Technol 60, 275–282 (2011). https://doi.org/10.1007/s10971-011-2463-2
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DOI: https://doi.org/10.1007/s10971-011-2463-2