A new way to prepare tin oxide precursor polymeric gels

Author: Hamd W.   Boulle A.   Thune E.   Guinebretiere R.  

Publisher: Springer Publishing Company

ISSN: 0928-0707

Source: Journal of Sol-Gel Science and Technology, Vol.55, Iss.1, 2010-07, pp. : 15-18

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Abstract

Transparent tin oxide gels are elaborated in the isopropoxide/toluene/isopropanol system. The gelation occurs at room temperature without any acid or base additions. The formation of the SnO2 precursor gels polymeric network is evidenced by Fourier transform infrared spectroscopy. The gelation time is studied as a function of the complexing ratio R = [acac]/[Sn(OR)4], the hydrolysis ratio W = [H2O]/[Sn(OR)4], the concentration of tin oxide precursor C = [Sn(OR)4], and the volume fraction of toluene P = (toluene volume) / (total solvent volume).