Pyrene-Doped Polyorganosiloxane Layers over Commercial Glass Fibers

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Show simple item record González Benito, Francisco Javier Cabanelas Valcárcel, Juan Carlos Vigil Montaño, Maria Reyes Aznar Jiménez, Antonio Bravo De Pedro, Julio Baselga Llidó, Juan 2017-11-14T09:59:11Z 2017-11-14T09:59:11Z 1999-03
dc.identifier.bibliographicCitation González-Benito, J., Cabanelas, J. C., Vigil, M. R., Aznar, A., Bravo, J., & Baselga, J. (1999). Pyrene-Doped Polyorganosiloxane Layers over Commercial Glass Fibers. Journal of Fluorescence, 9 (1), pp. 51-57.
dc.identifier.issn 1053-0509
dc.description.abstract Commercial glass fibers have been subjected to different activation treatments under neutral and acidic conditions to achieve different coating degrees when silanized with γ-aminopropyltriethoxisi lane (APES). A fluorescent sulfonamide (PSA) was formed between the amine residue and a fluorescent probe, pyrenesulfonyl chloride (PSC). Reflectance UV–Vis spectra of the pyrene-doped fibres show that pyrene is present in the form of preassociated dimers when the coating degree is low. Emission and excitation fluorescence spectra reveal the existence of a charge transfer ground-state complex with exciplex emission at 460–515 nm and absorption red-shifted with respect to the S₀ → S₁ transition. Lifetime measurements yield three lifetimes, which are assigned to dimer, exciplex, and monomer emission. From the photophysical data it is concluded that the fibers with the highest silane content have an open structure with the highest fraction of isolated fluorescent moieties.
dc.description.sponsorship This research was supported by CICYT MAT93- 0823. This paper is dedicated to the memory of Professor Irmina Hernández-Fuentes.
dc.format.extent 7
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher Plenum Publishing Corporation
dc.rights © Plenum Publishing Corporation, 1999 © Springer Verlag
dc.subject.other Pyrenesulfonyl chloride
dc.subject.other Glass fibers
dc.subject.other APES
dc.subject.other Exciplex emission
dc.title Pyrene-Doped Polyorganosiloxane Layers over Commercial Glass Fibers
dc.type article
dc.subject.eciencia Materiales
dc.subject.eciencia Química
dc.rights.accessRights openAccess
dc.type.version acceptedVersion
dc.identifier.publicationfirstpage 51
dc.identifier.publicationissue 1
dc.identifier.publicationlastpage 57
dc.identifier.publicationtitle Journal of Fluorescence
dc.identifier.publicationvolume 9
dc.identifier.uxxi AR/0000020481
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