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Abstract:

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.

Registro:

Documento: Artículo
Título:Photophysical methods for the study of sol-gel transition and structure of titania gels
Autor:Marchi, M.C.; Negri, R.M.; Bilmes, S.A.
Filiación:Fac. de Ciencias Exactas y Naturales, Ciudad Univ. Pabellón II, Universidad de Buenos Aires, (C1428EHA) Buenos Aires, Argentina
Palabras clave:AOT; Fluorescence anisotropy; Reverse micelles; Titanium dioxide; Anisotropy; Gels; Hydrolysis; Micelles; Surface active agents; Titanium dioxide; Homogeneous systems; Sol-gels
Año:2003
Volumen:26
Número:1-3
Página de inicio:131
Página de fin:135
DOI: http://dx.doi.org/10.1023/A:1020762007417
Título revista:Journal of Sol-Gel Science and Technology
Título revista abreviado:J Sol Gel Sci Technol
ISSN:09280707
CODEN:JSGTE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_09280707_v26_n1-3_p131_Marchi

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Citas:

---------- APA ----------
Marchi, M.C., Negri, R.M. & Bilmes, S.A. (2003) . Photophysical methods for the study of sol-gel transition and structure of titania gels. Journal of Sol-Gel Science and Technology, 26(1-3), 131-135.
http://dx.doi.org/10.1023/A:1020762007417
---------- CHICAGO ----------
Marchi, M.C., Negri, R.M., Bilmes, S.A. "Photophysical methods for the study of sol-gel transition and structure of titania gels" . Journal of Sol-Gel Science and Technology 26, no. 1-3 (2003) : 131-135.
http://dx.doi.org/10.1023/A:1020762007417
---------- MLA ----------
Marchi, M.C., Negri, R.M., Bilmes, S.A. "Photophysical methods for the study of sol-gel transition and structure of titania gels" . Journal of Sol-Gel Science and Technology, vol. 26, no. 1-3, 2003, pp. 131-135.
http://dx.doi.org/10.1023/A:1020762007417
---------- VANCOUVER ----------
Marchi, M.C., Negri, R.M., Bilmes, S.A. Photophysical methods for the study of sol-gel transition and structure of titania gels. J Sol Gel Sci Technol. 2003;26(1-3):131-135.
http://dx.doi.org/10.1023/A:1020762007417