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Showing 1 to 17 of 17 for “"IRRAS"”.
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Über den Einfluß von Oberflächendefekten auf Molekülschwingungen von Ethen auf der Kupfer(111)-Oberfläche : Schwingungsspektroskopische Untersuchung mit Elektronen und Infrarotlicht
… Infrarot-Reflexions-Absorptionsspektroskopie (IRRAS) an kalt aufgedampften und daher rauhen Kupferfilmen nachgewiesen werden und wurden deshalb Defektplätzen (»annealable sites«) zugeordnet. Das Auftreten dieser Linien in IRRAS-Messungen an glatten Cu(111)-Oberflächen wurde in der vorliegenden …
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Spectroelectrochemical analysis of self-assembled monolayers on gold
… An Infrared Reflection-Absorption Spectroscopy (IRRAS) method was developed to monitor the titration of acid functionalized films. The method compared favorably with the currently-used goniometry method because the IRRAS method was faster, less prone to operator bias, and provided structural …
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Mineral-Surface Chemistry of Hydroxyapatite and Urea-Rich Solutions
… infrared reflection-absorption spectroscopy (PM-IRRAS) to monitor structural changes of the mineral surface. Thin hydroxyapatite films were analyzed with scanning electron microscopy (SEM), energy-dispersive x-ray spectroscopy (EDX), and PM-IRRAS before and after reaction. Phosphate depletion was …
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Selbstaggregierende Multischichten : Alkyl-Siloxane auf Biphenylthiol-Modelloberflächen
… Infrarot-Reflexions-Adsorptionsspektroskopie (IRRAS), Summenfrequenz-Spektroskopie (SFG), Röntgen-Photoelektronen-Spektroskopie (XPS), Ellipsometrie, Raster-Kraft-Mikroskopie (AFM) und Kontaktwinkelmessung charakterisiert. ω-Mercaptobiphenyle wurden benutzt, um stabile, auf Molekülebene …
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In Situ Vibrational Spectroscopic and Electrochemical Study of Electrodeposition Additives on Copper Surfaces
… surfaces was investigated using SERS and PM-IRRAS. The results show that silicotungstate interacts with Cu surfaces. This interaction is shown to be potential-dependent; alpha-SiW12O404- associates with the Cu surface to a greater extent as the potential is stepped negatively. As the …
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Synthesis and Assembly of Dihydroindolizines on Gold Surfaces for Light Induced Work Function Alterations
… infrared reflection absorption spectroscopy (PM-IRRAS) allows analysis of the characteristic dihydroindolizine C=C (1559 cm-1) and pyridinium (1643 cm-1) stretch as a function of photoexcitation. Structural assignments of this photochromophore are corroborated to density function theory …
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Synthesis, redox properties, and langmuir monolayer formation of selected 3d- and 4d- metalloamphiphiles
… of ca. 49 mN/m when collapse occurs. The IRRAS spectra suggest high order of the deposited film.</p> <p>The synthesis and characterization a series of single-tailed copper(II)-containing surfactants of the type [CuII(LPY18)X2] with varying coligands (X) was also studied. The complexes …
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Electrochemical and spectroscopic analysis of collagen films and lipid bilayers on biomaterial surfaces
… infrared reflection absorption spectroscopy (PM-IRRAS), surface plasmon resonance spectroscopy (SPR) and ellipsometry are employed to analyze the stability and structure of adsorbed collagen films. The adsorbed collagen films are stable in contact with air and in contact with an electrolyte …
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Development Of Ruthenium/terpyridine Complexes For Water Oxidation
… and infrared reflection absorption spectra (IRRAS) of the complex deposited onto an ITO surface were in good agreement with the complex in solution confirming the catalytic core was intact after LB deposition process. The complex indicated 86 catalytic turnover cycles during a period of 24 h …
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Multidentate Alkanethiols with Cyclohexyl and Pyridyl Frameworks Forming Self-Assembled Monolayers on Gold
… infrared reflection absorption spectroscopy (PM-IRRAS), and X-ray photoelectron spectroscopy (XPS). CyTSH was found to generate multilayer thin films with many unbound thiol species and oxidized sulfur moieties (e.g., disulfides and sulfone). In contrast, 3C1CyTSH was found to generate monolayer …
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Surface Plasmon Resonance Imaging Biosensors for Cancer Diagnosis: Detection of Circulating Tumor DNA
… infrared reflection-absorption spectroscopy (PM-IRRAS). Complementary acoustic (quartz crystal microbalance with dissipation, QCM-D) and plasmonic (surface plasmon resonance imaging, SPRI) techniques have been employed to monitor the adsorption of bovine serum albumin (BSA), used as standard …
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Wechselwirkung zwischen Lipiden und DNA : auf dem Weg zum künstlichen Virus
… in Kombination mit IR-Spektroskopie (IRRAS), Röntgenreflexion (XR), Röntgendiffraktion (GIXD), Brewsterwinkel-Mikroskopie (BAM), Röntgenfluoreszenz (XRF) und Oberflächenpotentialmessungen Resultate: A) Die Anwesenheit der zweiwertigen Kationen Ba2+, Mg2+, Ca2+ oder Mn2+ in der Subphase …
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Characterization of the molecular structure at modified polymer surfaces and polyphenylene sulfide/copper interphases
… of infrared reflection absorption spectroscopy (IRRAS) and x-ray photoelectron spectroscopy (XPS) to investigate the molecular structure of both modified and unmodified thin films. The optical constants of polyphenylene sulfide (PPS) were determined and exact optical theory was utilized to …
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Model membrane interactions with ions and peptides at the air/water interface
The interactions between peptides and lipids are of fundamental importance in the functioning of numerous membrane-mediated biochemical processes including antimicrobial peptide action, hormone-receptor interactions, drug bioavailability across the blood-brain barrier and viral fusion processes. …
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Grenzflächen-kontrollierte Mineralisation von Calciumphosphat
… Infrarot-Reflexions-Absorptions-Spektroskopie (IRRAS), Röntgenphotoelektronenspektroskopie (XPS), Energie dispersiver Röntgenspektroskopie (EDXS), Elektronenbeugung (SAED) und hochauflösende Transmissionselektronenmikroskopie (HRTEM) konnte die erfolgreiche Mineralisation von Calciumphosphat für …
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Spectroelectrochemical investigation of passive layers formed on electrode surfaces
… infrared reflection absorption spectroscopy (PM-IRRAS), and sum frequency generation (SFG). It is a good test for the viability of shell-isolated nanoparticle enhanced Raman (SHINERS) particles in investigating surface film formation on single crystal Cu. SHINERS did not reproduce the face …