STATIC SECONDARY-ION MASS-SPECTROMETRIC INVESTIGATION OF THE SURFACE-STRUCTURE OF ORGANIC PLASMA-DEPOSITED FILMS PREPARED FROM STABLE-ISOTOPE-LABELED PRECURSORS .1. CARBONYL PRECURSORS

Stable-isotope-labeled carbonyl precursors (acetaldehyde, acetone, and 2-butanone) were used to create plasma-deposited films (PDFs), which were then examined by positive-and negative-ion static SIMS. This allowed hydrocarbon (HC) fragments to be distinguished from oxygen-containing fragments in the static SIMS spectra of these PDFs. Both the positive- and negative-ion static SIMS fragmentation patterns of conventional HC and oxygen-containing polymers were qualitatively examined in order to assign structural units on the PDF surface that could account for the salient features in the static SIMS fragmentation patterns of these PDFs.