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Journal Article

An XPS study of the composition of thin polyimide films formed by vapor deposition

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Grunze,  M.
Cellular Biophysics, Max Planck Institute for Medical Research, Max Planck Society;

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Citation

Lamb, R., Baxter, J., Grunze, M., Kong, C., & Unertl, W. (1988). An XPS study of the composition of thin polyimide films formed by vapor deposition. Langmuir, 4(2), 249-256. doi:10.1021/la00080a003.


Cite as: http://hdl.handle.net/21.11116/0000-0001-8933-B
Abstract
Films of polyimide (>8 nm) were formed on a polycrystalline silver surface following heating of a vapor-deposited layer of 4,4,-oxydianiline (ODA) and 1,2,4,5-benzenetetracarboxylic anhydride (PMDA). The imidization reaction leading to polymer formation was followed in situ with X-ray photoelectron spectroscopy. The uncertainties inherent in a quantitative analysis of the composition of the top 8 nm of the surface layer (corresponding to the sampling depth of the technique) are discussed with respect to thick films of ODA and PMDA adsorbed on a clean Cu(lll) surface at 200 K. The fully cured polyimide film contains excess ODA-like and PMDA-like constituents as trapped molecules or terminal groups.