Interpreting the Signal From a Localized Fluorescence Sensor: A Study By Angle Resolved-XPS and Dynamic SIMS

Published

June 1, 2003

Author(s)

D L. Woerdeman, W Ou, Joseph~undefined~undefined~undefined~undefined~undefined Lenhart, Richard~undefined~undefined~undefined~undefined~undefined Parnas

Abstract

Angle-resolved X-ray Photoelectron Spectroscopy (XPS) and Dynamic Secondary Ion Mass Spectroscopy (DSIMS) experiments were conducted to assess the interactions between a diamine curing agent and a glycidoxysilane-modified glass substrate. This effort was motivated by earlier work, in which a fluorescent probe localized in dilute quantities in the silane layer was used to track the penetration of the resin into the silane layer, as well as the resin cure [1-3]. XPS and DSIMS experiments were performed on the silane layers immersed only in the resin hardener, providing more detailed information about the concentration profile and structural reorganization within the silane layer due specifically to hardener penetration. Dynamic SIMS spectra reveal the presence of hardener throughout the layer, as indicated by the strong CN- signal throughout the silane layer thickness. The XPS results indicate the presence of an amine gradient within the top 10 nm of the silane coating, with less amine penetration deeper into the silane layer. The XPS data also suggest some level of anisotropy in the molecular structure of the diamine/glycidoxysilane coating, as revealed by the differences in the relative atomic concentrations and peak positions of the C(1s) components at two different take-off angles.

Citation

Journal of Colloid and Interface Science

Volume

262

Issue

No. 2

Pub Type

Journals

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Keywords

angle-resolved, floresent probe, glass/epoxy interface, glycidoxysilane, interph, organosilanes, silane-modified glass, XPS SIMS

Citation

Woerdeman, D. , Ou, W. , Lenhart, J. and Parnas, R. (2003), Interpreting the Signal From a Localized Fluorescence Sensor: A Study By Angle Resolved-XPS and Dynamic SIMS, Journal of Colloid and Interface Science, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=852068 (Accessed December 26, 2024)