Fluorescence-Labeled Pyrenesulfonamide Response for Characterizing Polymeric Interfaces in Composite Materials

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dc.contributor.author González Benito, Francisco Javier
dc.contributor.author Aznar Jiménez, Antonio
dc.contributor.author Lima, J.
dc.contributor.author Bahia, F.
dc.contributor.author Macanita, A.L.
dc.contributor.author Baselga Llidó, Juan
dc.date.accessioned 2017-11-14T10:21:11Z
dc.date.available 2017-11-14T10:21:11Z
dc.date.issued 2000-06
dc.identifier.bibliographicCitation González-Benito, J., Aznar, A., Lima, J., Bahia, F., Maçanita, A. L. & Baselga, J. (2000). Fluorescence-Labeled Pyrenesulfonamide Response for Characterizing Polymeric Interfaces in Composite Materials. Journal of Fluorescence, 10 (2), pp. 141-146.
dc.identifier.issn 1053-0509
dc.identifier.uri http://hdl.handle.net/10016/25826
dc.description.abstract E-glass fibers were silanized using a 1% (v/v) aqueous solution of γ-aminopropyltriethoxysilane (APES). Pyrene—sulfonamide conjugates were formed by reaction of 1-pyrenesulfonyl chloride (PSC) in acetonitrile (AcN), with the amine groups immobilized on the glass fiber surface. These pyrene—sulfonamide conjugates were used as fluorescence probes, being a relatively simple analytical method to study the coating microstructure of polyorganosiloxane layer on glass fibers. The first aim of this work was to estimate possible interactions of the polyaminosiloxane coating with surrounding molecules of different solvents (solvent accessibility to the chromophore). For this study, the fluorescence response of pyrene—sulfonamide dye (PSA) was correlated with solvent polarity parameters. It was concluded that all the studied solvents were accessible to the chromophore, and they can gather in two groups, depending on their ability to swell the poliorganosiloxane layer. The second objective was to estimate the rigidity of the coating polymer from the temperature dependence of PSA emission. At about 180 K, a sudden change in the behavior of different photophysical parameters of PSA were observed. This phenomenon was interpreted as a density change in the polyaminosiloxane attached to the glass fibers
dc.description.sponsorship This research was supported by integrated actions Portugal–Spain, Reference HP1998-0014. J. Baselga, A. Aznar, and J. González-Benito wish to acknowledge the European Commission for support under the Brite-EuRam program (BE97-4472).
dc.format.extent 6
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher Plenum Publishing Corporation
dc.rights © Plenum Publishing Corporation, 2000 © Springer Verlag
dc.subject.other Solvent accessibility
dc.subject.other Pyrenesulfonyl chloride
dc.subject.other Glass fibers
dc.subject.other APES
dc.subject.other Exciplex emission
dc.title Fluorescence-Labeled Pyrenesulfonamide Response for Characterizing Polymeric Interfaces in Composite Materials
dc.type article
dc.subject.eciencia Materiales
dc.subject.eciencia Química
dc.identifier.doi https://dx.doi.org/10.1023/A:1009491009039
dc.rights.accessRights openAccess
dc.relation.projectID info:eu-repo/grantAgreement/EC/BE97/4472
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 141
dc.identifier.publicationissue 2
dc.identifier.publicationlastpage 146
dc.identifier.publicationtitle Journal of Fluorescence
dc.identifier.publicationvolume 10
dc.identifier.uxxi AR/0000004126
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