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Interfacial Response of a Fluorescent Dye Grafted to Glass

Published

Author(s)

Joy P. Dunkers, Jospeh L. Lenahrt, J Van Zanten, Richard~undefined~undefined~undefined~undefined~undefined Parnas

Abstract

The properties of an epoxy/glass interfacial region are studied by covalently grafting a fluorescent probe to the glass surface. A dimethylaminonitrostilbene fluorophore is tethered to a triethoxysilane-coupling agent, generating a fluorescently labeled silane coupling agent (FLSCA). The glass surface is coated with a silane layer that was doped with small amounts of FLSCA. When the FLSCA-doped, silane-coated glass is immersed in epoxy resin, a 42-nm blue shift in fluorescence occurs during resin cure over the grafted FLSCA layer. When the dye is dissolved in bulk epoxy a 64-nm blue shift occurs during resin cure. The difference in blue shift is attributed to higher polarity and enhanced mobility in the buried interface.
Citation
Langmuir
Volume
16
Issue
21

Keywords

fluorescence, silane, epoxy, interface

Citation

Dunkers, J. , Lenahrt, J. , Van, J. and Parnas, R. (2000), Interfacial Response of a Fluorescent Dye Grafted to Glass, Langmuir, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=854029 (Accessed May 22, 2024)

Issues

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Created April 12, 2000, Updated February 19, 2017