Dokument-ID Dokumenttyp Autoren/innen Persönliche Herausgeber/innen Haupttitel Abstract Auflage Verlagsort Verlag Herausgeber (Institution) Erscheinungsjahr Titel des übergeordneten Werkes Jahrgang/Band ISBN Veranstaltung Veranstaltungsort Beginndatum der Veranstaltung Enddatum der Veranstaltung Ausgabe/Heft Erste Seite Letzte Seite URN DOI Lizenz Datum der Freischaltung OPUS4-24874 Zeitschriftenartikel Dietrich, Paul; Horlacher, T.; Girard-Lauriault, Pierre-Luc; Gross, Thomas; Lippitz, Andreas; Min, Hyegeun; Wirth, Thomas; Castelli, R.; Seeberger, P.; Unger, Wolfgang Multimethod chemical characterization of carbohydrate-functionalized surfaces A combined XPS, NEXAFS, and ToF-SIMS chemical surface characterization of carbohydrate-functionalized gold and glass surfaces is presented. Spot shape and chemical composition across a spot surface are provided by surface-sensitive methods as ToF-SIMS and XPS, used in their imaging modes. Moreover, the feasibility of this multimethod approach to control relevant production steps of a carbohydrate microarray prototype is demonstrated. London [u.a.] Taylor & Francis 2011 Journal of carbohydrate chemistry 30 4-6 361 372 10.1080/07328303.2011.615181 2016-02-19 OPUS4-23554 Zeitschriftenartikel Dietrich, Paul; Horlacher, T.; Girard-Lauriault, Pierre-Luc; Gross, Thomas; Lippitz, Andreas; Min, Hyegeun; Wirth, Thomas; Castelli, R.; Seeberger, P.H.; Unger, Wolfgang Adlayers of dimannoside thiols on gold: surface chemical analysis Carbohydrate films on gold based on dimannoside thiols (DMT) were prepared, and a complementary surface chemical analysis was performed in detail by X-ray photoelectron spectroscopy (XPS), time-of-flight secondary ion mass spectrometry (ToF-SIMS), near-edge X-ray absorption fine structure (NEXAFS), FT-IR, and contact angle measurements in order to verify formation of ω-carbohydrate-functionalized alkylthiol films. XPS (C 1s, O 1s, and S 2p) reveals information on carbohydrate specific alkoxy (C-O) and acetal moieties (O-C-O) as well as thiolate species attached to gold. Angle-resolved synchrotron XPS was used for chemical speciation at ultimate surface sensitivity. Angle-resolved XPS analysis suggests the presence of an excess top layer composed of unbound sulfur components combined with alkyl moieties. Further support for DMT attachment on Au is given by ToF-SIMS and FT-IR analysis. Carbon and oxygen K-edge NEXAFS spectra were interpreted by applying the building block model supported by comparison to data of 1-undecanethiol, poly(vinyl alcohol), and polyoxymethylene. No linear dichroism effect was observed in the angle-resolved C K-edge NEXAFS. Washington, DC American Chemical Society 2011 Langmuir 27 8 4808 4815 10.1021/la104038q 2016-02-19