INVESTIGADORES
ALDABE Sara Alfonsina
artículos
Título:
Photophysical methods for the study of sol-gel transition and structure of titania gels
Autor/es:
M. CLAUDIA MARCHI; RM NEGRI; ALDABE BILMES, S
Revista:
JOURNAL OF SOL-GEL SCIENCE AND TECHNOLOGY
Editorial:
SPRINGER
Referencias:
Lugar: Berlin; Año: 2003 vol. 26 p. 131 - 135
ISSN:
0928-0707
Resumen:
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.
