Quantitative Characterization of Surface Amino Groups of Plasma-Polymerized Films Prepared from Nitrogen-Containing Monomers for Bioelectronic Applications

Hitoshi MUGURUMA  

IEICE TRANSACTIONS on Electronics   Vol.E91-C   No.6   pp.963-967
Publication Date: 2008/06/01
Online ISSN: 1745-1353
DOI: 10.1093/ietele/e91-c.6.963
Print ISSN: 0916-8516
Type of Manuscript: PAPER
Category: Organic Molecular Electronics
plasma-polymerized film,  X-ray photoelectron spectroscopy,  amino group,  surface modification,  ethylenediamine,  allylamine,  acetonitrile,  

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The surface amino groups of plasma-polymerized films prepared from various nitrogen-containing monomers were quantitatively characterized for bioelectronic and biomedical applications. X-ray photoelectron spectroscopy (XPS) measurements were conducted on two kinds of surfaces: pristine surfaces of plasma-polymerized film prepared using various nitrogen-containing monomers, and theirs surfaces whose amino groups had been derivatized by a primary-amine-selective reagent carrying an XPS label. The XPS data showed that the maximum surface density of amino groups for this film was 8.41013 cm-2. Amino groups constituted 14-64% of all surface nitrogen atoms (NH/N), depending on the monomer used.