2008
DOI: 10.3989/cyv.2008.v47.i1.205
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Dependencia espectral de la eritrosina B con el pH en soluciones tampón y en recubrimientos sol-gel de silice

Abstract: Thin coatings optically sensitive against pH are obtained by entrapping erythrosin B molecules in a sol-gel silica matrix. Comparisons between optical spectra of erythrosin B in solutions and those once entrapped in silica coatings are performed for pH ranging from 0.5 to 12.0. Significant differences between both kinds of spectra (solutions and coatings) of erythrosin B are observed. Main changes are displayed in the absorption spectra for neutral to basic pH. Furthermore, the erythrosin B doped coatings show… Show more

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Cited by 9 publications
(1 citation statement)
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“…Depositing a glass coating with the proper refraction index over a glassy substrate it is possible to obtain an interface with the required conditions to exhibit total internal reflection, confining the light inside the glassy substrate or in the coating [13][14][15]. Moreover, sol-gel coatings fulfill most of the requirements for optical wave guiding as they are good adhesion, a proper thickness and roughness control, and the possibility to encapsulate dispersed nanostructures in the coating in order to tune its optical properties [4, [16][17][18][19].…”
Section: Introductionmentioning
confidence: 99%
“…Depositing a glass coating with the proper refraction index over a glassy substrate it is possible to obtain an interface with the required conditions to exhibit total internal reflection, confining the light inside the glassy substrate or in the coating [13][14][15]. Moreover, sol-gel coatings fulfill most of the requirements for optical wave guiding as they are good adhesion, a proper thickness and roughness control, and the possibility to encapsulate dispersed nanostructures in the coating in order to tune its optical properties [4, [16][17][18][19].…”
Section: Introductionmentioning
confidence: 99%