Modelling the interaction of hybrid inorganic-organic molecules on oxide surfaces: glycidyl isopropyl ether and epoxyhexane on a gamma-Al2O3(111) mimic
Ga. Woods et al., Modelling the interaction of hybrid inorganic-organic molecules on oxide surfaces: glycidyl isopropyl ether and epoxyhexane on a gamma-Al2O3(111) mimic, SURF SCI, 435, 1999, pp. 199-204
The hybrid inorganic-organic molecule gamma-glycidoxypropyltrimethoxysilane
is used as an adhesion promoter because of its ability to act as a molecul
ar bridge between chemically different phases. In this paper we concentrate
on the interaction of the organofunctional glycidoxy end chain of this mol
ecule on a gamma-Al2O3(111) mimic created by oxidation of NiAl(110). In ord
er to understand better the interaction of this functionality, the glycidox
y moiety was modelled using glycidyl isopropyl ether and epoxyhexane. Refle
ction-absorption infrared spectroscopy studies of these model compounds dem
onstrate that monolayer adsorption on the gamma-Al2O3 film is non-dissociat
ive, with both molecules being only weakly perturbed, supporting the idea t
hat the organofunctional end group in hybrid inorganic-organic adhesion pro
moters remains intact, available to react potentially with the adhesive on
application. (C) 1999 Elsevier Science B.V. All rights reserved.