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.
, Lenahrt, J.
, Van, J.
and Parnas, R.
Interfacial Response of a Fluorescent Dye Grafted to Glass, Langmuir, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=854029
(Accessed November 28, 2023)