title: TOF-S-SIMS molecular depth profiling of organic bilayers using mechanical wear test methodology.
abstract: Recent publications on static secondary ion mass spectrometry (S-SIMS) focus on molecular depth profiling by using polyatomic or ultra-low energy monoatomic projectiles. Since their applicability depends on the relationship between the ion yield and the depth, which is hard to obtain without extensive studies, a combination of a wear test method with S-SIMS surface analysis was performed in the current study. Using this non-sputtering procedure, the relation between the signal intensity and the local concentration remains in principle the same as that at the surface (which is easy to determine). Mechanical erosion was successfully applied to expose sub-surface material from organic multilayers. Through surface analysis with S-SIMS on the gradually exposed deeper planes, molecular depth profiles could be obtained. The study was conducted on a model system relevant to offset printing, consisting of two polymer layers, containing dyes and a surfactant, cast on an Al substrate.
authors.affiliation: MiTAC, Department of Chemistry (CDE), University of Antwerp, Universiteitsplein 1, 2610, Wilrijk, Belgium. roel.demondt@ua.ac.be
authors.forename: Roel
authors.initials: R
authors.lastname: De Mondt
authors.forename: Luc
authors.initials: L
authors.lastname: Van Vaeck
authors.forename: Andreas
authors.initials: A
authors.lastname: Heile
authors.forename: Heinrich F
authors.initials: HF
authors.lastname: Arlinghaus
authors.forename: Frank
authors.initials: F
authors.lastname: Vangaever
authors.forename: Jens
authors.initials: J
authors.lastname: Lenaerts
mesh_terms: D004129:Dimethylpolysiloxanes / Q000737:chemistry*; D015394:Molecular Structure; D012394:Rosaniline Dyes / Q000737:chemistry*; D018629:Spectrometry, Mass, Secondary Ion / Q000379:methods*; D013499:Surface Properties; D013501:Surface-Active Agents / Q000737:chemistry*; D013997:Time Factors
chemical_list: D004129:Dimethylpolysiloxanes; D012394:Rosaniline Dyes; D013501:Surface-Active Agents; C013830:baysilon; C034887:ethyl violet