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Interfacial Response of a Fluorescent Dye Grafted to Glass



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


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.


fluorescence, silane, epoxy, interface


Dunkers, J. , Lenahrt, J. , Van, J. and Parnas, R. (2000), Interfacial Response of a Fluorescent Dye Grafted to Glass, Langmuir, [online], (Accessed May 22, 2024)


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Created April 12, 2000, Updated February 19, 2017