Surface Characterization of Silanized Glass Fibers by Labeling with Environmental Sensitive Fluorophores

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Show simple item record González Benito, Francisco Javier Cabanelas Valcárcel, Juan Carlos Aznar Jiménez, Antonio Vigil Montaño, Maria Reyes Bravo de Pedro, Julio Baselga Llidó, Juan 2017-11-09T13:10:25Z 2017-11-09T13:10:25Z 1996-10-10
dc.identifier.bibliographicCitation J. Gonzalez-Benito, J. C. Cabanelas, J, A. J. Aznar, M. R. Vigil, J. Bravo y J. Baselga (1996). Surface Characterization of Silanized Glass Fibers by Labeling with Environmental Sensitive Fluorophores. Journal of Applied Polymer Science, 62 (2), pp. 375-384.
dc.identifier.issn 0021-8995
dc.description.abstract Glass fibers have been treated with gamma-aminopropyl-triethoxysilane (APES) through different silanizating procedures, which include APES aqueous solutions and APES vapor adsorption. Transmission Fourier transform IR (FTIR) measurements have been performed on the silanized samples to characterize the silanization reaction. Dansyl-sulfonamide conjugates have then been formed by reaction of dansyl chloride in dimethylformamide solution with the amine functionality's immobilized on the glass fiber surface. Steady-state and time-resolved fluorescence measurements have been performed on dansylated samples. A dependence of the fluorescence intensity and the wavelength of the maximum emission on the silanization procedure has been observed. Good fits of the fluorescence decays of dansyl labels are found when biexponential functions are used for deconvolution, whereas the decay of dansylamides in fluid solution is single exponential. A two-state model for the solid solvent relaxation seems to apply for this samples. Several surface structural changes produced by the different silanization methods have been proposed. FTIR results support the conclusions drawn from fluorescence measurements.
dc.description.sponsorship Financial support for this work has been provided by Comision Interministerial de Ciencia y Tecnologia (Cl­ CYT) , under grant MAT93-0823, and by Comunidad Autónoma de Madrid (CAM) , under grant 247 / 92. We thank Dr. I. Pierola for her comments and suggestions.
dc.format.extent 10
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher Wiley
dc.rights © Wiley, 1996
dc.title Surface Characterization of Silanized Glass Fibers by Labeling with Environmental Sensitive Fluorophores
dc.type article
dc.subject.eciencia Materiales
dc.subject.eciencia Química
dc.rights.accessRights openAccess
dc.relation.projectID Gobierno de España. MAT93-0823
dc.relation.projectID Comunidad de Madrid. CAM247/92
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 375
dc.identifier.publicationissue 2
dc.identifier.publicationlastpage 384
dc.identifier.publicationtitle Journal of Applied Polymer Science
dc.identifier.publicationvolume 62
dc.identifier.uxxi AR/0000006161
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