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Accessibility of dye molecules embedded in surfactant-silica hybrid materials in both powder and film forms


Reference:

Borello, L., Onida, B., Barolo, C., Edler, K. J., Arean, C. O. and Garrone, E., 2004. Accessibility of dye molecules embedded in surfactant-silica hybrid materials in both powder and film forms. Sensors and Actuators B-Chemical, 100 (1-2), pp. 107-111.

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Abstract

Two CTABr-sifica mesophases have been prepared, one of them as a powder with hexagonal structure containing Congo Red, the other one as a film with cubic structure containing Disperse Red 1. In the former case the dye has been occluded via co-entrapping, whereas in the latter it has been covalently anchored to the silica matrix via a co-condensation route. In both systems, the dye molecules proved to be accessible to NH3 and HCl in gas phase, notwithstanding the presence of micelles in the mesophase, which results to be fully permeable to such molecules. (C) 2004 Elsevier B.V. All rights reserved.

Details

Item Type Articles
CreatorsBorello, L., Onida, B., Barolo, C., Edler, K. J., Arean, C. O. and Garrone, E.
DOI10.1016/j.snb.2003.12.030
DepartmentsFaculty of Science > Chemistry
RefereedYes
StatusPublished
ID Code4944
Additional InformationID number: ISI:000221680300018

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