Yazar "Zümreoğlu Karan, Birgül" için listeleme
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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. ... -
Boric acid: A simple molecule of physiologic, therapeutic and prebiotic significance
Zümreoğlu Karan, Birgül; Köse, Dursun Ali (Walter de Gruyter GmbH, 2015)Boric acid, H3BO3, is a weak acid and at physiological pH is in the form of an uncharged small molecule. Behaving as a Lewis acid, it forms complexes with amino- and hydroxy acids, carbohydrates, nucleotides and vitamins ... -
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 ... -
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 ... -
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 ... -
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 ... -
Magnetic nanocomposites of boron and Vitamin C
İçten, Okan; Hosmane, Narayan Sadashiv; Köse, Dursun Ali; Zümreoğlu Karan, Birgül (Royal Society of Chemistry, 2017)Magnetic nanocomposites comprising elemental boron and vitamin C in the form of mono or bis(ascorbatoborate) complexes have been synthesized for targeted delivery/therapy applications. These nanocomposites were characterized ... -
Manganese Oxoborate-Based Nanostructures as Novel Oxygen Evolution Catalysts in Neutral Media
Elmacı, Gökhan; İçten, Okan; Özer, Demet; Özgenç, Gökhan; Ertekin, Zeliha; Köse, Dursun Ali; Zümreoğlu Karan, Birgül (Wiley-V C H Verlag Gmbh, 2021)The development of electrocatalysts for the OER (oxygen evolution reaction) process is an ongoing challenge in producing sustainable energy systems. Herein, we report QS (quasi-spherical), IR (irregular), and NR (nanorod) ... -
Mixed-ligand complexes of boric acid with organic biomolecules
Boric acid forms meta-stable complexes with biomolecules like amino and hydroxy acids and stable complexes with the diol group containing carbohydrates, vitamins, and nucleotides, yielding mono-chelate (1: 1 complex) or ... -
Organic biomolecules bind to phosphate through borate linkages in aqueous solutions
Aydoğmuş, Nazik; Köse, Dursun Ali; Beckett, Micheal Andrew; Zümreoğlu Karan, Birgül (TÜBİTAK, 2014)Solutions of salicyclic, ascorbic, and citric acids were reacted with boric acid, followed by NaH2PO4. The products, triphosphateborate ester of salicylic acid (1), orthosphateborate ester of ascorbic acid (2), triphosphateborate ... -
Production of Magnetic Nano-bioconjugates via Ball Milling of Commercial Boron Powder with Biomolecules
İçten, Okan; Hosmane, Narayan Sadashiv; Köse, Dursun Ali; Zümreoğlu Karan, Birgül (Wiley-VCH Verlag, 2016)Mechanochemical preparation and characterization of surface-functionalized magnetic boron nanoparticles for biomedical applications are presented. Alloying with the stainless steel ball milling material during mechanochemical ... -
Synthetic routes to manganese oxoborate and correlations between experimental parameters and properties
İçten, Orkun; Özgenç, Gökhan; Özer, Demet; Köse, Dursun Ali; Elmacı, Gökhan; Ertekin, Zeliha; Zümreoğlu Karan, Birgül (Elsevier Sci Ltd, 2021)This study examines manganese oxoborate synthesis in three different routes and the role of process parameters on structure and morphology of the products. Borax or boric acid and simple manganese salts were used as raw ...
