Vishal Goel, U. Beginn, A. Mourran
Oct 15, 2008
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0
Influential Citations
7
Citations
Journal
Macromolecules
Abstract
Subsequent treatment of branched poly(ethylene imine) with N,N,N-trimethyl-3-({[(2-oxo-1,3-dioxolan-4-yl)methoxy]carbonyl}amino)propan-1-ammonium iodide and either (2-oxo-1,3-dioxolan-4-yl)methyl(oxiran-2-ylmethyl)carbamate or 4-[(oxiran-2-ylmethoxy)methyl]-1,3-dioxolan-2-one yielded ‘quat-primer polymers’ bearing quarternary ammonium and cyclic carbonate groups covalently linked to the macromolecule. 1H and 13C NMR spectroscopy with model reaction mixtures and the macromolecular products revealed that the quaternary ammonium groups were selectively attached to the primary amino groups of the polymeric educt. The new functional macromolecules were characterized further by means of DSC and TGA. Upon spin coating the cyclic carbonate groups containing cationic polymers on oxygen/argon plasma-pretreated highly oriented pyrolytic graphite (HOPG), scanning force microscopy revealed the presence of a 3 nm thick film covering the substrate. This ultrathin coating was persistent against extraction with methanol, ...