Academic Journal
Fluorescence-Labeled Pyrenesulfonamide Response for Characterizing Polymeric Interfaces in Composite Materials
| العنوان: | Fluorescence-Labeled Pyrenesulfonamide Response for Characterizing Polymeric Interfaces in Composite Materials |
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| المؤلفون: | González Benito, Francisco Javier, Aznar Jiménez, Antonio, Lima, J., Bahia, F., Macanita, A.L., Baselga Llidó, Juan |
| بيانات النشر: | Plenum Publishing Corporation |
| سنة النشر: | 2000 |
| المجموعة: | Universidad Carlos III de Madrid: e-Archivo |
| مصطلحات موضوعية: | Solvent accessibility, Pyrenesulfonyl chloride, Glass fibers, APES, Exciplex emission, Materiales, Química |
| الوصف: | 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 ; 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). |
| نوع الوثيقة: | article in journal/newspaper |
| وصف الملف: | application/pdf |
| اللغة: | English |
| تدمد: | 1053-0509 |
| Relation: | info:eu-repo/grantAgreement/EC/BE97/4472; 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.; http://hdl.handle.net/10016/25826; https://dx.doi.org/10.1023/A:1009491009039; 141; 146; Journal of Fluorescence; 10; AR/0000004126 |
| DOI: | 10.1023/A:1009491009039 |
| الاتاحة: | http://hdl.handle.net/10016/25826 https://doi.org/10.1023/A:1009491009039 |
| Rights: | © Plenum Publishing Corporation, 2000 © Springer Verlag ; open access |
| رقم الانضمام: | edsbas.C14FDE19 |
| قاعدة البيانات: | BASE |
| تدمد: | 10530509 |
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| DOI: | 10.1023/A:1009491009039 |