--- res: bibo_abstract: - Alkylphosphonic acids of different alkyl chain lengths were adsorbed on electrochemically polished NiTi surfaces from ethanolic solutions. The electropolishing process led to passive films mainly composed of Ti-oxyhydroxide. The surface showed nanoscopic etching pits with a depths of about 2 nm and a diameter of about 20 nm. The interfacial binding mechanism of the phosphonic acid group to the oxyhydroxide surface and the ordering of the monolayer were spectroscopically analysed by means of infrared reflection absorption FTIR-spectroscopy with (PM-IRRAS) and without (IRRAS) photoelastic modulation. The comparison of IRRAS and PM-IRRAS data of the long chain octadecylphosphonic acid monolayer proved that the binding mechanism of the phosphonic acid group to the oxyhydroxide surface is based on a mono-or bidentate bond, which is not stable in the presence of high water activities. An alkyl chain length of 17 CH2 groups is required for the formation of self-assembled monolayers, which are stable in aqueous environments. These long chain aliphatic organophosphonic acid monolayers were shown to inhibit anodic and cathodic surface reactions. (C) 2010 Elsevier B.V. All rights reserved.@eng bibo_authorlist: - foaf_Person: foaf_givenName: M. foaf_name: Maxisch, M. foaf_surname: Maxisch - foaf_Person: foaf_givenName: Christoph foaf_name: Ebbert, Christoph foaf_surname: Ebbert foaf_workInfoHomepage: http://www.librecat.org/personId=7266 - foaf_Person: foaf_givenName: B. foaf_name: Torun, B. foaf_surname: Torun - foaf_Person: foaf_givenName: N. foaf_name: Fink, N. foaf_surname: Fink - foaf_Person: foaf_givenName: T. foaf_name: de los Arcos, T. foaf_surname: de los Arcos - foaf_Person: foaf_givenName: J. foaf_name: Lackmann, J. foaf_surname: Lackmann - foaf_Person: foaf_givenName: H. J. foaf_name: Maier, H. J. foaf_surname: Maier - foaf_Person: foaf_givenName: Guido foaf_name: Grundmeier, Guido foaf_surname: Grundmeier foaf_workInfoHomepage: http://www.librecat.org/personId=194 bibo_doi: 10.1016/j.apsusc.2010.09.044 bibo_issue: '6' bibo_volume: 257 dct_date: 2011^xs_gYear dct_identifier: - UT:000285408700035 dct_isPartOf: - http://id.crossref.org/issn/0169-4332 - http://id.crossref.org/issn/1873-5584 dct_language: eng dct_title: PM-IRRAS studies of the adsorption and stability of organophosphonate monolayers on passivated NiTi surfaces@ ...