Browsing Τμήμα Χημείας / Department of Chemistry by Title
Now showing items 301-320 of 1299
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Article
Determination of the chirality of enantiomeric [16O, 17O, 18O] sulfate esters by IR spectroscopy: An ab initio evaluation
(1995)The calculated shifts accompanying oxygen isotopic substitution in the symmetric and antisymmetric >SO2 stretching vibrational frequencies of 2,2-dioxo-1,3,2-dioxothianes confirm the experimental finding that these shifts ...
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Conference Object
Determination of uranium concentration in ground water samples of Northern Greece
(2012)The activity concentration of 238U and 234U has been determined in groundwater samples of hot springs and deep wells from the region of Northern Greece. The analysis was performed by alpha spectroscopy after pre-concentration ...
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Article
Determination of uranium in calcareous rocks/minerals after separation by nitrilotriacetic-mediated sample dissolution and cation-exchange
(Springer, 2023)Τhe determination of uranium in calcareous samples has been investigated by means of alpha-spectroscopy after dissolution of the samples by nitrilotriacetic solution (NTA) and uranium separation by cation-exchange. Method ...
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Conference Object
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Article
Detosylation of 3-amino-1-tosylindole-2-carbonitriles using DBU and thiophenol
(2010)Attempted detosylation of the 3-amino-1-(p-tosylamino)indole-2-carbonitriles 4a-c using either K2CO3 in EtOH or DBU in PhH at reflux gives unexpectedly the 3-(N-p-tosylamino)indole-2-carbonitriles 5a-c, respectively in ...
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Article
Development and evaluation of a QSPR model for the prediction of diamagnetic susceptibility
(2008)A novel QSPR model is developed and evaluated for the prediction of diamagnetic susceptibility. The model was produced using the Multiple Linear Regression (MLR) technique on a database that consists of 406 organic compounds ...
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Article
Development of a capillary electrophoresis-mass spectrometry method for the determination of rivastigmine in human plasma - Optimization of the limits of detection and quantitation
(2012)A capillary zone electrophoresis-electrospray ionization-mass spectrometry (CZE-ESI-MS) method was developed for the analysis of the acetylcholinesterase inhibitor rivastigmine. Several electrophoretic and ESI-MS parameters ...
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Article
Development of a Reliable Analytical Protocol for the Isolation of Cholesterol Oxidation Products—a Comparison of Different Lipid Extraction and Saponification Methods
(2015)The main objectives of this study were (i) the optimization and the validation of a high performance liquid chromatographic method for the simultaneous determination of seven cholesterol oxidation products (COPs), (ii) the ...
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Conference Object
DFT study of optical properties of Pt-based complexes
(2010)We report Density Functional Theory (DFT) calculations providing the geometrical and electronic structures, as well as the vibrational and optical properties of the homologous series of Pt-pyramidalized olefin complexes ...
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Article
A DFT study of the ground state multiplicities of linear vs angular polyheteroacenes
(2004)Unrestricted density functional calculations in combination with the broken-symmetry approach and spin-projection methods have been employed to study a series of formally 4n π antiaromatic linear and angular polyheteroacenes. ...
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Article
Dft study of the optical and vibration spectra of a series of platinum-olefin complexes
(2011)We report Density Functional Theory calculations providing the vibrational and optical properties of the homologous series of Pt-pyramidalized olefin complexes (CH2)n-(C8H10)Pt(PX3)2, where X = H and Ph, and n = 0, 1, 2, ...
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Article
Di(n-butyl) itaconate end-functionalized polymers: Synthesis by group transfer polymerization and solution characterization
(2011)In this study we present our efforts to homo- and co-polymerize, using group transfer polymerization (GTP), a dialkyl diester of itaconic acid, a naturally-derived unsaturated dicarboxylic acid. The monomer employed, ...
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Article
Diblock, ABC Triblock, and Random Methacrylic Polyampholytes: Synthesis by Group Transfer Polymerization and Solution Behavior
(1994)Water-soluble, low-polydispersity, low-molecular-weight random, AB diblock, and ABC triblock polymers of methacrylic acid (MAA), 2- (dimethylamino) ethyl methacrylate (DMAEMA), methyl methacrylate (MMA) and 2-phenylethyl ...
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Conference Object
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Article
A diffuse reflectance fourier transform infra‐red study of carbon dioxide adsorption on silicalite‐I
(1991)The adsorption of carbon dioxide at room temperature on large, well‐defined crystals of Silicalite‐I was studied by diffuse reflectance Fourier transfer infra‐red spectroscopy. The zeolite samples had a mean crystal size ...
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Article
A diffuse reflectance infrared fourier-transform spectra and density functional theory study of CO adsorption on Rhγ-Al2O 3
(2007)The vibrational frequencies and bond dissociation energies of carbon monoxide adsorbed to various rhodium clusters are computed, and the diffuse reflectance infrared Fourier-transform (DRIFT) spectrum of carbon monoxide ...
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Book Chapter
Dimerization and polymerization of enones in the fluid and solid states
(John Wiley and Sons Inc., 2010)
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Article
A dimethacrylate cross-linker cleavable under thermolysis or alkaline hydrolysis conditions: Synthesis, polymerization, and degradation
(2016)We develop a new platform based on 2,6-pyridinediethanol diesters for introducing polymer degradability under thermolysis or alkaline hydrolysis conditions, with the latter being rare in polymers. Such labile diesters can ...
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Article
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Article
Diol-type ligands as central 'players' in the chemistry of high-spin molecules and single-molecule magnets
(2008)The combination of diol-type ligands with paramagnetic transition metal ions has led to the isolation of a host of new homometallic and heterometallic clusters, high-spin molecules and single molecule magnets ranging in ...