Photophysical Methods for the Study of Sol-Gel Transition and Structure of Titania Gels

被引：0
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作者：
M. Claudia Marchi
R. Martín Negri
Sara A. Bilmes
机构：
来源：
Journal of Sol-Gel Science and Technology | 2003年 / 26卷
关键词：
titanium dioxide; fluorescence anisotropy; reverse micelles; AOT;
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摘要：
The sol to gel evolution of titania based systems in AOT (sodium 2-etil-hexil sulfosuccinate) reverse micelles is monitored by the fluorescence anisotropy of molecular probes located in the different phases of the system. In contrast with processes in homogeneous systems, hydrolysis and condensation reactions occur in different time windows. The obtained results allow to describe the location of the hydrolysis, the reorganisation of the surfactant and to predict the formation of precipitates.
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页码：131 / 135
页数：4
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