A NEXAFS orientation study of γ-aminopropyltriethoxysilane on zinc oxide surfaces

Title: A NEXAFS orientation study of γ-aminopropyltriethoxysilane on zinc oxide surfaces
Creator: Thomsen, L.; Watts, B.; Dastoor, P. C.
Relation: Surface and Interface Analysis Vol. 38, Issue 7, p. 1139-1145
Publisher Link: http://dx.doi.org/10.1002/sia.2369
Publisher: John Wiley & Sons
Resource Type: journal article
Date: 2006
Description: Bifunctional silanes, such as γ-aminopropyltriethoxysilane (γ-APS), are able to adsorb to a substrate via both functional groups creating a number of possible orientations for an adsorbed molecule within an organosilane film. The orientation of dip coated γ-APS films on native zinc oxide surfaces as a function of solution pH has been studied using near edge X-ray absorption fine structure (NEXAFS) spectroscopy. The NEXAFS results shed further light on the changes in the orientation that take place during the oscillatory adsorption of these molecules and reveal new insights into the molecular reorganisations that occur with changing solution pH. The results are discussed in terms of an electrokinetic model that has been developed.
Subject: organosilanes; thin films; XPS; NEXAFS
Identifier: http://hdl.handle.net/1959.13/33331
Identifier: uon:3194
Identifier: ISSN:0142-2421
Language: eng
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