ORCID "0000-0003-4767-6799" Fen Edebiyat Fakültesi için listeleme
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Adsorption of Victoria Blue R (VBR) dye on magnetic microparticles containing Fe(II)–Co(II) double salt
Erol, Kadir; Köse, Kazım; Köse, Dursun Ali; Sızır, Ümit; Tosun Satır, İlknur; Uzun, Lokman (Taylor and Francis Inc., 2016)Magnetic microparticles have many applications in various areas today. The aim of this study was to develop hydrophobic magnetic microparticles as an alternative to traditional methods for high capacity and low cost removal ... -
Affinity purification lipase from wheat germ: comparison of hydrophobic and metal chelation effect
Köse, Kazım; Erol, Kadir; Köse, Dursun Ali; Evci, Emre; Uzun, Lokman (Taylor and Francis Ltd., 2017)Cryogels are used quite a lot nowadays for adsorption studies as synthetic adsorbents. In this study, lipase enzyme (obtained from Candida cylindracea) adsorption capacity of poly(2-hydroxyethyl methacrylate-N-methacrylo ... -
Bazı metal organik kafes yapılı bileşiklerin hidrojen depolama performanslarının incelenmesi
Hidrojenin bilinen depolama sistemlerinden farklı olarak depolama ortamlarında kimyasal olarak veya zayıf van der Waals etkileşimleriyle fiziksel olarak tutunabildiği bilinmektedir. Hidrojen, fiziksel adsorpsiyonla karbon ... -
Bioactive glasses prepared from organic-mediated B-O-P bonded materials
Köse, Dursun Ali; Aydoğmuş, Nazik; Zümreoğlu Karan, Birgül (Elsevier, 2014)In this study, we introduce an alternative route for the synthesis of bioactive borate-phosphate glasses. Glasses with nominal compositions of xNa2O·yB2O3·zP2O 5 (x = 1, 2; y = 1/2; z = 1/2, 3/2) were obtained via melt-quench ... -
Boric acid complexes with organic biomolecules: Mono-chelate complexes with salicylic and glucuronic acids
Two mono-chelate borate complexes, lithium mono-salicylatoborate and sodium mono-glucuronatoborate, are reported for the first time. The complexes were isolated from aqueous solutions and characterized by FTIR (Fourier ... -
Boric acid complexes with thiamine (vitamin B1) and pyridoxine (vitamin B6)
Complexation of boric acid with vitamins B1 (thiamine) and B6 (pyridoxine) was investigated. The products were isolated from aqueous solutions and characterized by elemental analysis, FT-IR, 13C MAS NMR and thermal methods. ... -
Combined experimental and theoretical investigation of characterization and hydrogen storage properties of Zn(II) based complex and composites
Öztürk, Zeynel; Özkan, Göksel; Asan, Abdurrahman; Köse, Dursun Ali (Elsevier Ltd, 2015)Metal organic structured coordination complex was synthesized by using Zn(II), 1,10 Phenantroline and teraphtalic acid building blocks. Then the synthesized compound have been characterized with Ft-IR, TGA/DTA/DrTGA, EA, ... -
A comparative examination of mono- and bis-chelate salicylatoborate complexes and the crystal structure of layered magnesium bis-salicylatoborate
Complexes of boric acid with sodium- and magnesium-salicylates were prepared and analyzed to examine the structural consequences resulting from the coordination of the salicylate ligand in mono- and bis-chelate modes. The ... -
Diphenic acid/nicotinamide and 1,10-phenanthroline complexes of CoII, CuII and ZnII. Synthesis and structural investigation
Şahin, Zarife Sibel; Şahin, Onur; Dağlı, Özge; Köse, Dursun Ali (Elsevier Ltd, 2016)The complexes of diphenic acid with CoII and CuII metals and diphenic acid/nicotinamide mixed ligand with CoII and ZnII metals were synthesized and characterized of structural properties by elemental analysis, FT-IR spectra, ... -
DNA binding and cleavage activities of Na[B(Glu)(OH)2] ·2H2O, Na[B(Cit)(OH)2]·2H2O, Li[B(Sal)(OH)2], and Mg[B(Sal)(OH)2]·2H 2O complexes
The interaction of some previously reported complexes Na[B(Glu)(OH) 2]·2H2O, Na[B(Cit)(OH)2]·2H 2O, Li[B(Sal)(OH)2], and Mg[B(Sal)(OH)2] ·2H2O with cattle genomic DNA (CG-DNA) was investigated using UV absorption, viscosity ... -
Electrostatic adsorption of asymmetric dimethyl arginine (adma) on poly (2-hydroxyethyl methacrylate-acrylic acid) nanoparticles
Erol, Kadir; Köse, Kazım; Avcı, Emre; Köse, Dursun Ali (Taylor and Francis Inc., 2017)Separation and purification of asymmetric dimethylarginine (ADMA) molecule, which is an important biomolecule in terms of cardiovascular diseases, is of great importance. Among the methods, the adsorption technique is of ... -
Ethyl 2-[(2-hydroxybenzylidene)amino]-6-methyl-4,5,6,7-tetrahydrothieno[2, 3-c]pyridine-3-carboxylate
The title compound, C18H20N2O3S, exists as the phenol–imine form in the crystal and there are bifurcated intramolecular O—H…(N/O) hydrogen bonds present. The conformation about the C N bond is anti (1E); the C N imine bond ... -
Experimental and simulation study on structural characterization and hydrogen storage of metal organic structured compounds
Öztürk, Zeynel; Özken, Göksel; Köse, Dursun Ali; Asan, Abdurrahman (Elsevier Ltd, 2016)One of the barrier for common usage of hydrogen energy system is storing hydrogen efficiently. Especially for mobile applications, it is very important to store hydrogen in small spaces reversibly. Metal-organic framework ... -
Fabrication and characterization of magnesium and calcium trimesate complexes via ion-exchange and one-pot self-assembly reaction
Özer, Demet; Altuntaş Öztaş, Nurşen; Köse, Dursun Ali; Şahin, Onur (Elsevier B.V., 2018)Using two different synthesis methods, two diversified magnesium and calcium complexes were successfully prepared. When the ion exchange method was used, C9H14MgO11.H2O and C18H30Ca3O24 complexes were obtained. When the ... -
Fabrication and characterization of magnetite-gadolinium borate nanocomposites
İçten, Okan; Köse, Dursun Ali; Zümreoğlu Karan, Birgül (Elsevier Ltd, 2017)Soft ferromagnetic magnetite (Fe3O4)-gadolinium borate nanocomposites have been prepared via a facile hydrothermal approach by using Fe3O4, borax (BX) or boric acid (BA) and a simple Gd(III) salt. The products obtained by ... -
Fe(II)-Co(II) double salt incorporated magnetic hydrophobic microparticles for invertase adsorption
Köse, Kazım; Erol, Kadir; Emniyet Sert, Asiye Aslı; Köse, Dursun Ali; Alp Avcı, Gülçin; Uzun, Lokman (Humana Press Inc., 2015)Invertase (β-fructofuranoside fructohydrolase, EC 3.2.1.26) is an enzyme widely used in the food industry. Its main function is the formation of glucose and fructose through hydrolysis of sucrose. For the separation and ... -
Gadolinium borate and iron oxide bioconjugates: Nanocomposites of next generation with multifunctional applications
İçten, Okan; Köse, Dursun Ali; Matissek, Stephan J.; Misurelli, Jason A.; Elsawa, Sherine F.; Hosmane, Narayan Sadashiv; Zümreoğlu Karan, Birgül (Elsevier Ltd, 2018)The systematic investigations concerning the bioconjugation of GdBO3-Fe3O4 nanocomposite and their in vitro biocompatibility with cancer cell lines are reported. The nanocomposites were prepared hydrothermally from magnetite ... -
Hydrogen storage properties of mono-and bidentate MOF structured orotate complexes
Öztürk, Zeynel; Köse, Dursun Ali; Asan, Abdurrahman; Öztürk, Banu; Andaç, Ömer; Özkan, Göksel (Materials Research Society, 2014)One of the barriers for wide usage of hydrogen energy system is efficient storage. To store more hydrogen efficiently, physisorption is a choice among the others with high storage performance, reversibility, and lifecycles. ... -
Investigation of dna binding and cleavage activities of boron complexes in the presence of hydrogen peroxide
Devrim, Alparslan Kadir; Arslantaş, Ali; Sudağıdan, Mert; Köse, Dursun Ali; Zümreoğlu Karan, Birgül (Universitatea Babes-Bolyai, Catedra de Filosofie Sistematica, 2014)Magnesium [di(hydroxy)mono(citratoborate)]dihydrate (Mg[B(Cit)(OH)2]2.2H2O), Lithium [di(hydroxy)mono(citratoborate)]hydrate Li[B(Cit)(OH)2].H2O, Sodium [di(hydroxy)mono(salicylato) borate)hydrate Na[B(Sal)(OH)2].H2O and ... -
Investigation of immobilization and kinetic properties of catalase enzyme on poly(HEMA-GMA) cryogel
Erol, Kadir; Cebeci, Büşra; Köse, Kazım; Köse, Dursun Ali (Slovak Academy of Sciences Institute of Experimental Physics Department of Biophysics, 2017)Catalase is a metalloenzyme, which is found in almost all aerobic respiratory organisms. This enzyme acts as a detoxification agent for the hydrogen peroxide (H2O2) compound, protecting tissues and cells from oxidative ...