Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 51 for “"UV-Vis-NIR"”.
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Zweikernkomplexe multifunktioneller Pyrazolatliganden als bimetallische Analoga von N-Chelatkomplexen : Synthese, Koordinationschemie, Eigenschaften
… Bimetallkomplexe wurden mit Hilfe von IR-, UV/Vis/NIR-, NMR-spektroskopischen und elektrochemischen Methoden sowie der Röntgenstrukturanalyse aufgeklärt. Zweikernige Komplexe mit chelatfixierten Metallionen eignen sich insbesondere zur Untersuchung von ligandvermittelten Wechselwirkungen …
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Herstellung von optisch aktiven Vanadiumdioxidschichten für die Beschichtung von Architekturglas
… Filmeigenschaften wurden mittels XRD, AFM, XPS, UV-VIS-NIR, RBS, REM, Profilometrie und in temperaturabhängigen Widerstandsmessungen verifiziert.
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Magnetite Oxidation in Aqueous Systems
… products, maghemite, by the use of UV-Vis-NIR spectroscopy. As oxidation proceeded at a constant specific temperature, the concentration of magnetite decreases, which was indicated by a decrease in absorption in the NIR-region of the spectrum. As magnetite concentrations decreased, …
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Compuestos de coordinación de iones de metales de transición con ligandos heterocíclicos dadores de S,N
… characterized through elemental analysis, IR, UV-Vis-NIR diffuse reflectance, EPR, magnetic susceptibility, mass spectroscopy, X-ray single-crystal and powder diffractometry. Besides, we studied the antimicrobial activity and phagocytic functíon in humans neutrophils treated with complexs and …
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Fluorescence Labeling of Surface Species as an Efficient Tool for Detection, Identification and Quantification of Oxygen Containing Functionalities on Carbon Materials
… such as Raman spectroscopy, IR spectroscopy, UV-VIS-NIR spectroscopy, and X-ray photoelectron spectroscopy, provide selectivity in identification together with sensitivity in quantification. Fluorescence labeling of surface species (FLOSS) to identify and quantify oxygen containing …
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3,6-Disubstituierte 2,5-Dihydroxy-p-benzochinone als Brückenliganden in dinuklearen Komplexen : Synthese und Koordinationschemie
… resultierenden Komplexe wurde mit Hilfe von IR-, UV/Vis/NIR-, NMR-spektroskopischen und elektrochemischen Methoden sowie der Röntgenstrukturanalyse aufgeklärt. Interessanterweise bilden die zweikernigen Ni-Komplexe [(triphos)Ni(II)(µ-C6O4R2)2-Ni(II)(triphos)]2+ (R = H, Cl, octyloxy) in Lösung ein …
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Experiment and simulation study on a novel, effective radiative cooing film
… consumption. It features a high ultraviolet visible near-infrared (UV-Vis-NIR) reflectivity and high IR emissivity, and thus achieves the cooling effect even under intense sunlight. A simple, cost-effective process is proposed to fabricate DRC film whose optical properties are characterized …
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Synthese, Elektrochemie und thermisches Verhalten von Metallkomplexen
… Square-Wave-Voltammetrie und in situ UV/Vis-NIR-Spektroskopie untersucht. Das drucklose Niedertemperaturfügen von Kupferwerkstoffen und das Generieren dünner MgO- und ZnO-Schichten auf Si-Substraten mittels CVD und Spin-Coating-Prozesse stellen zwei weitere Kernthemen dieser Arbeit …
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Élaboration et caractérisation de couches minces de pentoxyde de vanadiun déposées par voltamétrie cyclique pour des applications électrochromes
… diffraction des rayons X (DRX), spectroscopie UV-Vis-NIR et microscopie électronique à balayage (MEB). Les résultats μ-Raman et DRX montrent que les couches minces de V₂O₅ traitées thermiquement entre 50 et 250°C sont amorphes et que la cristallisation a lieu à une température de calcination de …
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Optical Properties of Substrate Supported Mixtures of Silver and Gold Nanoparticles
… owing to their strong plasmonic responses in the visible region of the spectrum. Herein, mixtures of Au and Ag nanoparticles (NPs) were combined to achieve new nanoarchitectures with useful electromagnetic properties. It was predicted that these mixtures would produce materials with multiple …
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LINEARLY EXTENDED PYRYLIUM SALTS (LEPS) AND LINEARLY EXTENDED THIOPYRYLIUM SALTS (LETS) AS ORGANIC SEMICONDUCTORS
… computation and studied experimentally by UV-Vis-NIR spectroscopy, cyclic voltammetry, single crystal X-ray diffraction, ESR and variable temperature NMR (VT-NMR) experiments.</p> <p>The LEPS and LETS compounds described here show moderate to high solubilities in organic solvents like …
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Synthetic, Spectroscopic, Structural and Computational Studies of Enyl and Ynyl Carbon-Rich Complexes
… have been investigated using a combination of UV-vis-NIR and IR spectroscopies and computational studies. In contrast to the case of closely related iron compounds, for the ruthenium complexes 1,3-{trans-Cl(dppe)2RuC≡C}2C6H4, 1,3-{Cp*(dppe)RuC≡C}2C6H4 and 1,3-{Cp*(dppe)RuC≡C}2-5-(HC≡C)C6H3 the …
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Elektropolymerisation, Spektroelektrochemie und Potentiometrie von funktionalisierten leitfähigen Polymeren
… mit spektroelektrochemischen Methoden: ESR-, UV-Vis-NIR- und FTIR-Spektroelektrochemie charakterisiert. Durch diese Methoden konnten während der elektrochemischen Oxidation von funktionalisierten leitfähigen Polymeren verschiedene Polymer- bzw. Copolymer-Ladungsträger nachgewiesen werden: …
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The synthesis and characterization of metal chalcogenide-pedot: pss polymer composites for thermal energy conversion
… as there was minimal oxidation of the nanowires. UV-Vis/NIR and Raman spectroscopy indicated the remaining PEDOT segments on the polymer to be partially reduced with a benzoid-like conformation. Transport measurements showed ohmic and linear I/V curves at room temperature for all films. The …
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Synthesis, Characterization, and Mixed-Valence Studies of Conformationally Constrained Bisferrocenyl Complexes for the Study of Through-Space S***π; Interactions
… voltammetry, differential pulse voltammetry, UV-Vis-NIR spectroscopy and DFT computations. Electrochemical results show two, fully reversible 1e⁻ redox processes for the ferrocenes where the separation of peaks is affected by both solvent and supporting electrolyte, suggesting significant …
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Application of Pulsed D.C. Magnetron sputtering deposition for the component layers of CuInSe2 thin film photovoltaic cells
… force microscopy, scanning electronmicroscopy, UV-Vis-NIR spectrophotometry, four point probe etc. Material characterisationresults indicated the suitability of using PDMS to deposit the component layers required inCIS solar cell fabrication.
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Synthesis, characterisation and applications of bimetallic nanoparticles
… NRs. Powerful experimental techniques viz. UV-Vis NIR spectroscopy and electron microscopy (STEM) were employed to characterise the monometallic and bimetallic AuNRs. AuNSs, AuNRs, Au@Pd NRs, Au@Pd NSs, Au@Pt NRs and Au@Rh core-shell nanorods were synthesised and characterised by one or both …
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Synthesis and Properties of Chemically Modified Carbon Nanotubes
… The selectivitiy of the addition was probed by UV-vis-NIR and Raman spectroscopy where the metallic were found to be more selective than semiconducting SWNTs. The location and distribution of the functional groups was determined by AFM using electrostatic interactions with gold nanoparticles. …
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Investigation and Characterization of the Optical, Thermal, and Adsorption Properties of Carbon Aerogels for CO2 Capture Applications
… The aerogel was characterized using UV–Vis–NIR and FTIR spectroscopy to measure reflectance, transmittance, and absorptance across the solar and thermal-infrared ranges. Mid-wave infrared thermography under a xenon arc lamp (1 Sun irradiance) quantified transient heating and cooling. …
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Cyanide-bridged polynuclear complexes
… by X-ray single crystal determination, IR, UV-Vis and cyclic voltammograms, respectively. The three mixed valent dinuclear complexes display metal- metal charge transfer (MMCT) bands in the visible region. Some of MMCT properties in the complexes have been analyzed. The cyanide-bridged trans …
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