Güncel Gönderiler: Kimya-Makale Koleksiyonu
Toplam kayıt 678, listelenen: 601-620
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Synthesis and characterization of 1,3,4-thiadiazole-2,5-dithio crown ethers
(Walter de Gruyter GMBH, 2016)Hetero-crown ethers (ligands I-IV) containing 1,3,4-thiadiazole-2,5-dithiol (bismuthiol) were synthesized and fully characterized. The ligands were prepared by a nucleophilic substitution (S(N)2) reaction of the appropriate ... -
Dispersive liquid-liquid microextraction based on solidification of floating organic drop for preconcentration and determination of trace amounts of copper by flame atomic absorption spectrometry
(Elsevier Sci Ltd, 2017)A novel, simple, rapid, sensitive, inexpensive and environmentally friendly dispersive liquid-liquid microextraction method based on the solidification of a floating organic drop (DLLME-SFO) was developed for the determination ... -
Ionic liquid dispersive liquid-liquid microextraction method for the determination of ırinotecan, an anticancer drug, in water and urine samples using uv-vis spectrophotometry
(Aoac Int, 2017)A new, simple, efficient, and environmentally friendly ionic liquid dispersive liquid liquid microextraction method was developed for the determination of irinotecan, an anticancer drug, in water and urine samples using ... -
Solvent, substituent, and dimerization effects on the ring-opening mechanisms of monosilacyclopropylidenoids: a theoretical study
(Springer, 2017)Density functional theory and ab initio computations elucidated the ring-opening of substituted (R = -CF3, -CN, -CH3, -H, -NH2, -OCH3, -OH, -SiH3) 1-bromo-1-lithiosilirane 1 and 2-bromo-2-lithiosilirane 2 to LiBr complexes ... -
A novel cloud point extraction method for separation and preconcentration of cadmium and copper from natural waters and their determination by flame atomic absorption spectrometry
(Iwa Publishing, 2017)A sensitive and simple cloud point extraction method was developed for simultaneous separation and preconcentration of cadmium and copper prior to their determination by flame atomic absorption spectrometry. 4-phenyl-3-t ... -
Al-pillared-montmorillonite (alpmt)/poly(methyl methacrylate)(pmma) nanocomposites: the effects of solvent types and synthesis methods
(De Gruyter Open Ltd, 2017)Al-pillared-montmorillonite (AlPMt)/poly(methyl methacrylate)(PMMA) nanocomposites were synthesized via melt blending method (MBM) and solution blending method (SBM). FTIR-ATR spectroscopy proved the interaction of AlPMt ... -
A new ligandless cloud point extraction method for preconcentration of iron from natural water samples and FAAS detection
(Iwa Publishing, 2017)A simple, efficient and inexpensive ligandless cloud point extraction method was developed for the preconcentration of trace amounts of iron from natural water samples, followed by flame atomic absorption spectrometry ... -
Comparison of classic and microwave-assisted synthesis of benzo-thio crown ethers, and investigation of their ion pair extractions
(Elsevier Science Bv, 2017)Macrocyclic benzo-thio crown ethers and benzo-oxo crown ethers were prepared using an esterification ring closing method. These compounds were synthesised using 2,2'-dithiodibenzoyl chloride, and various glycols and dithiols, ... -
Experimental and theoretical vibrational spectra of sideridiol isolated from sideritis species
(Maik Nauka/Interperiodica/Springer, 2017)Sideridiol (ent-7 alpha,18 beta-dihydroxykaur-15-ene) one of the ent-kaurene diterpenoid, is isolated from the genus Sideritis L. belongs to the family of Lamiaceae. The vibrational frequencies of sideridiol in the ground ... -
Synthesis and characterization of luminescent Er, Nd and Dy doped Ba3BP3O12
(International OCSCO World Press, 2017)Purpose: Purpose of this study, our aim is high temperature based on synthesis method of barium borophosphate and doping with lanthanide type metals such as Er, Nd and Dy into the structure by solid state reaction. ... -
In vitro effects of novel type M-V-O derivatives on Xanthine Oxidase
(Cellular and Molecular Biology Association, 2017)Xanthine Oxidase (XO) is related with different diseases such as vascular, gout, nephropathy and renal stone diseases that are relevant to high uric acid levels and oxidative stress. Some common natural inhibitors of ... -
In vitro cytotoxic and genotoxic effects of newly synthesised boron ionic liquids
(Taylor and Francis Ltd., 2018)In this study, new molecules containing boron were added to the family of ionic organic compounds, in particular, ionic liquids with a cationic center. This study aimed to determine the cytotoxic and genetic effects of a ... -
CrVMoO7: Microwave synthesis and structural characterization
(Turkish Chemical Society, 2018)In this study, microwave synthesis method was operated to obtain CrVMoO7. Structural characterization of the compound was realized by powder X-ray diffraction (XRD) and Fourier transform infrared spectrometry (FTIR). ... -
An effective synthesis of crystalline Pb5(VO4)3OH nanorods
(Elsevier B.V., 2017)Crystalline Pb5(VO4)3OH nanorods have been successfully synthesized with high efficiency using a new precipitation method. In addition, the effect of pH on the particle size and crystal morphology of the synthesized products ... -
A new and short synthesis of 7H-benzo[a]cyclohepten-7-one and some derivatives: Oxidation of 7-bromo-5H-benzo[a]cycloheptene
(Marcel Dekker Inc, 2001)Oxidation of 7-bromo-5H-benzo[a]cycloheptene with some oxidation reagents has been studied. Several 2,3- and 4,5-benzotropone derivatives has been obtained. The structures of the products were determined by H-1-, (CNMR)-C-13 ... -
The effect of boron substitution on cyclacenes
(Elsevier Science Bv, 2001)AM1-type semiempirical molecular orbital treatment was performed on the Huckel-type cyclacenes having certain number of boron atoms at the peri-positions and at the fusion sites of the arenoid rings. The effect of boron ... -
Selective preconcentration, separation and speciation of ferric iron in different samples using N,N '-bis(2-hydroxy-5-bromo-benzyl)1,2 diaminopropane
(Elsevier Science Bv, 2001)The synthesis and analytical applications of N,N ' -bis(2-hydroxy-5-bromo-benzyl)1,2 diaminopropane (HBDAP) are described. This compound reacts with Fe(III) in the range of pH 3-6 to produce a red complex (2:3 mol ratio ... -
Synthesis, spectral and biological studies of Mn(II), Ni(II), Cu(II), and Zn(II) complexes with a tetradentate Schiff base ligand. Complexation studies and the determination of stability constants (Ke)
(Taylor & Francis İnc, 2001)The complexes Mn(II), Ni(II), Cu(II) and Zn(H) ions with a N2O2 Schiff base derived from 1,4-diaminobutane and salicylaldehyde, N,N'-bis(salicylidene)-1,4-diaminobutane (LH2), have been prepared and characterized by elemental ... -
Inhibition of bovine carbonic anhydrase by new sulfonamide compounds
(Maik Nauka/Interperiodica, 2001)Inhibitory effects of three new derivatives of 2-acetylamino-1,3,4-thiadiazole-5-sulfonamide on bovine carbonic anhydrase have been investigated. The new compounds are 2-(3-chloropropionylamino)-1,3,4-thiadiazole-5-sulfonamide, ... -
Adsorption of copper(II) onto perlite
(Academic Press Inc, 2001)Perlite samples activated by H2SO4 solutions were utilized as adsorbents for the removal of Cu(II) ions from solutions at different pHs, ionic strengths, and temperatures. It has been found that the amount of Cu(II) adsorbed ...
