Browsing Τμήμα Χημείας / Department of Chemistry by Title
Now showing items 557-576 of 1299
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Investigating the photochemical dynamics of chlorine dioxide in water and acetonitrile using ultrafast pump-probe spectroscopy
(1998)The photochemical reaction dynamics of chlorine dioxide (OClO) are investigated using femtosecond pump-probe spectroscopy. It is found that the majority of the dynamics can be attributed to the formation and vibrational ...
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Investigation of dioxygen activation by copper(II)–iminate/aminate complexes
(2018)The activation of dioxygen by metal ions is critical in chemical and bio-chemical processes. A scientific challenge is the elucidation of the activation site of dioxygen in some copper metalloproteins, which is either the ...
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Article
Investigation of infrared absorption spectra of copper phosphate glasses containing some rare earth oxides
(1990)The spectra of copper-lutetium-phosphate and copper-erbium-phosphate glasses have been studied within the spectral range 4000 to 400 cm- by Fourier transform infrared spectroscopy. Incorporation of a small amount of lutetium ...
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Investigation of substituent effect of 1-(3,3-diphenylpropyl)-piperidinyl phenylacetamides on CCR5 binding affinity using QSAR and virtual screening techniques
(2006)A linear quantitative-structure activity relationship model is developed in this work using Multiple Linear Regression Analysis as applied to a series of 51 1-(3,3-diphenylpropyl)-piperidinyl phenylacetamides derivatives ...
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An investigation of the NO/H2/O2 (Lean De-NOx) reaction on a highly active and selective Pt/La0.7Sr0.2Ce0.1FeO3 catalyst at low temperatures
(2002)A 0.1 wt% Pt supported on La0.7Sr0.2Ce0.1FeO3 solid (mixed oxide containing LaFeO3, SrFeO3-x, CeO2, and Fe2O3 phases) has been studied for the NO/H2/O2 reaction in the 100-400°C range. For a critical comparison, 0.1 wt% ...
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An investigation of the NO/H2/O2 (Lean-deNOx) reaction on a highly active and selective Pt/La0.5Ce0.5MnO3 catalyst
(2001)The NO/H2/O2 reaction has been studied under lean-burn conditions in the 100-400°C range over 0.1 wt% Pt supported on La0.5Ce0.5MnO3 (mixed oxide containing LaMnO3, CeO2, and MnO2 phases). For a critical comparison, 0.1 ...
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Investigation of the stability of polyelectrolyte multilayer coatings in open-tubular capillary electrochromatography using laser scanning confocal microscopy
(2005)A simple polyelectrolyte multilayer (PEM) coating procedure was used for the development of stable modified capillaries. PEM coatings were constructed in fused-silica capillaries using alternating rinses of cationic and ...
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Article
Investigation of the synthesis and properties of ternary V-Cu-Ce Oxides of Composition VxCuxCe1-2xO2
(2009)Aco-precipitation method has been used to prepare ternary mixed oxides based on ceria with the general formula VxCuxCe 1-2xO2, where x was varied between 0.05 and 0.45. The structural and surface properties as well as the ...
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Investigation on uranyl interaction with bioactive ligands. Synthesis and structural studies of the uranyl complexes with glycine and N-(2-mercaptopropionyl)glycine
(2002)Three new uranium(VI) compounds have been prepared with glycine (Hgly), N-(2-mercaptopropionyl)glycine (Hmpg) and 2,2′-dithiobis(N-propionylglycine) (tpg). The crystal structure of [UO2(Hgly)2Cl2] has been solved, revealing ...
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Investigations of the Hofmeister series and other specific ion effects using lipid model systems
(2017)From the ion point-of-view specific ion effects (SIE) arise as an interplay of ionic size and shape and charge distribution. However in aqueous systems SIE invariably involve water, and at surfaces they involve both ...
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Investigations on the surface properties of pure and alkali or alkaline earth metal doped ceria
(2000)The effect of parameters, such as initial cerium concentration and alkali or alkaline earth concentration in the reactant solution on the properties of precipitated ceria, have been investigated by nitrogen adsorption ...
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The ion-lipid battle for hydration water and interfacial sites at soft-matter interfaces
(2014)At charged surfaces "bound" ions reduce the repulsive electrostatic forces, while dissociated ions control the osmotic pressure in colloidal systems. For systems charged through ionic adsorption on the other hand, the ...
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Ionic liquids for the molecular enantiorecognition of free l-T3, l-T4 and d-T4
(2015)Ionic liquids were proposed for the molecular enantiorecognition of free l-T3, l-T4 and d-T4. l-Phenylalanine tert-butyl ester lactate (l-PheC4-Lac), l-alanine tert-butyl ester l-lactate (l-AlaC4-Lac) and l-alanine tert-butyl ...
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Article
Is the most stable gas-phase isomer of the benzenium cation a face-protonated π-complex?
(1995)The recent suggestion, based on gas-phase experimental data, that the most stable isomer of protonated benzene has a face-protonated π-complex structure is not supported by our detailed computations which indicate that the ...
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Is vanadate reduced by thiols under biological conditions? Changing the Redox potential of V(V)/V(IV) by complexation in aqueous solution
(2010)Although dogma states that vanadate is readily reduced by glutathione, cysteine, and other thiols, there are several examples documenting that vanadium(V)-sulfur complexes can form and be observed. This conundrum has ...
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The journey of L-tartaric acid in the world of enantiomerically pure bis- and trisadducts of C60with the inherently chiral trans-3 and all-trans-3 addition patterns
(2014)Inherently chiral multi-adducts of [60]fullerene represent unique chiral molecular tectons featuring fascinating optoelectronic properties. Herein we discuss the most recent progress in the synthesis of enantiomerically ...
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Kinetic and mechanistic studies of the water-gas shift reaction on Pt/TiO2 catalyst
(2009)A detailed kinetic and mechanistic study of the water-gas shift (WGS) reaction on a 0.5 wt% Pt/TiO2 catalyst has been carried out. The dependence of kinetic reaction rate on the partial pressures of reactants (CO, H2O) and ...
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Kinetics of methane oxidative coupling on li-doped TiO2 catalysts
(1993)A kinetic study of methane conversion to C2-hydrocarbons was conducted by cofeeding methane and oxygen at 1 bar total pressure over a series of Li-doped TiO2 catalysts. The lithium dopant concentration was varied between ...
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Kinetics of methane oxidative coupling on zinc-doped titanium oxide
(1992)A kinetic study of methane conversion to C2-hydrocarbons was conducted by cofeeding methane and oxygen at 1 bar total pressure over a series of zinc-doped TiO2 catalysts. The zinc dopant concentration was varied between 1 ...