Solvent and Temperature Effects on Polymer-Coated Glass Fibers. Fluorescence of the Dansyl Moiety
Purchase on Springer.com
$39.95 / €34.95 / £29.95*
Rent the article at a discountRent now
* Final gross prices may vary according to local VAT.
E-type glass fibers were coated with poly(γ-aminopropyltriethoxysilane), treating them with a 1% (v/v) monomer aqueous solution. The fibers were labeled with a dansyl-sulfonamide conjugate by reaction of acetonitrile solutions of dansyl chloride with the amine groups immobilized on the glass fiber surface. Interactions of the labeled coating polymer with solvents of different polarities were estimated by measurements of the fluorescence band shifts of the label. It was found that for aprotic solvents, the solvent dipolar coupling relaxation mechanism is dominated by thermodynamic interactions of the solvent with the polymer matrix, while for protic solvents this mechanism is dominated by specific interactions between solvent molecules and the excited state of the chromophore. Different experimental excited-state dipole moments were obtained for nonpolar and polar solvents (μ* NP = 7.2 ± 1.6 D, μ* P = 11.9 ± 1.5 D). Using the AM1 method, excited-state dipole moments for the first and second singlets were calculated and it was concluded that μ* NP ≃ 〈μ*2 1〉1/2 and μ* P ≃ 〈μ*2 2〉1/2. Accordingly, neither the glass support nor the coating polar influence the excited-state properties of dansyl. The temperature dependence of dansyl emission allows the determination of the relaxation temperature of the coating polymer, which was estimated as 175 K for the coating used.
- H. Ishida (1984) Polym. Composites 5, 101.
- H. Okabayashi, I. Shimizu, E. Nishio, and C. J. O'Connor (1997) Colloid Polym. Sci. 275, 744.
- J. González-Benito, J. Baselga, and A. J. Azna (1999) J. Mater. Process. Technol. 92–93, 129.
- D. Wang and F. R. Jones (1993) J. Mater. Sci. 28, 2481.
- P. Walker (1991) J. Adhes. Sci. Technol. 4, 279.
- H. Hamada, N. Ikuta, N. Nishida, and Z. Maekawa (1994) Composites 25, 512.
- E. P. Plueddemann (1982) Silane Coupling Agents, Plenum Press, New York.
- J. R. Lakowicz (1999) Principles of Fluorescence Spectroscopy, 2nd ed., Plenum Press; New York, Chap. 7.
- K. Kalyanasundaram (1991) in V. Ramamurthy (Ed.), Photochemistry in Organized & Constrained Media, VCH, New York, Chap. 2.
- S. W. Beavan, J. S. Hargreaves, and D. Phillips (1979) Adv. Photochem. 11, 207.
- K. J. Shea, D. Y. Sasaki, and G. J. Stoddard (1989) Macromolecules 22, 1722.
- D. A. Hoffmann, J. E. Anderson, and C. W. Frank (1995) J. Mater. Chem. 5, 13.
- J. González-Benito, J. C. Cabanelas, A. J. Aznar, M. R. Vigil, J. Bravo, and J. Baselga (1996) J. Appl. Polym. Sci. 62, 375.
- E. Carlier, A. Revillon, A. Guyot, and J. Chauvet (1993) Eur. Polym. J. 29(6), 819.
- C. H. Lochmüller, D. B. Marshall, and D. R. Wilder (1981) Anal. Chim. Acta 130, 31.
- B. Serrano, B. Levenfeld, J. Bravo, and J. Baselga (1996) J. Polym. Eng. Sci. 36, 175.
- P. Suppan (1990) J. Photochem. Photobiol. A Chem. 50, 293.
- Y. Li, L. Chan, L. Tyer, R. T. Moody, Ch. M. Himel, and D. M. Hercules (1975) J. Am. Chem. Soc. 97, 3118.
- T. R. Griffiths and D. C. Pugh (1979) Coord. Chem. Rev. 29, 129.
- J. Brandrup and E. H. Immergut (Eds.) (1989) Polymer Handbook, John Wiley & Sons, New York.
- C. M. Hansen and K. Skaarup (1967) J. Paint Technol. 39, 511.
- Y. Du, Y. Xue, and H. L. Frisch (1996) Physical Properties of Polymers Handbook, AIP Press, New York.
- Solvent and Temperature Effects on Polymer-Coated Glass Fibers. Fluorescence of the Dansyl Moiety
Journal of Fluorescence
Volume 11, Issue 4 , pp 307-314
- Cover Date
- Print ISSN
- Online ISSN
- Kluwer Academic Publishers-Plenum Publishers
- Additional Links
- fluorescence probes
- dansyl chloride
- glass fibers
- Industry Sectors