Yazar "Soylemez, Rahime" seçeneğine göre listele

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    A study on supercapacitor electrode material from trigonal planar and (N?B) dative bond stabilized tetrahedral boron-containing compounds
    (Springer, 2023) Kilic, Ahmet; Soylemez, Rahime; AkdemIr, Murat; Kivrak, Hilal DemIr; Kaya, Mustafa; Horoz, Sabit
    The present study has revealed that C40H38B2Cl2N4O6, a boron-containing compound, exhibits exceptional electrochemical performance when utilized as an electrode in supercapacitor applications. The specific capacitance values of C40H38B2Cl2N4O6 were found to be significantly higher than that of the traditional electrode material, C15H14BNO2 center dot HCl, in both KOH and Na2SO4 electrolyte solutions. In particular, when tested in KOH, the specific capacitance value of C40H38B2Cl2N4O6 was a staggering 3.74 times greater than that of C15H14BNO2 center dot HCl, demonstrating its exceptional energy storage capabilities. The superior performance of C40H38B2Cl2N4O6 can be attributed to its unique porous structure and high surface area, which enhances its ability to store charge. This research serves as a significant step towards the development of more advanced energy storage devices, and paves the way for C40H38B2Cl2N4O6 to be employed as a promising material in future supercapacitor applications.
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    Öğe
    Design, spectroscopic properties and effects of novel catechol spiroborates derived from Schiff bases in the antioxidant, antibacterial and DNA binding activity
    (Elsevier Science Sa, 2022) Kilic, Ahmet; Soylemez, Rahime; Okumu, Veysi
    Novel catechol spiroborates (L(1-5)B) were prepared from the reaction of the corresponding Schiff base (L(1-5)H) ligands, boric acid, and 3,5-di-ten-butyl catechol under favorable reaction conditions. The synthesized all compounds were characterized by NMR spectra, FT-IR spectra, UV-Vis spectra, LC-MS/MS spectra, fluorescence spectra, elemental analysis as well as the melting point. The optical properties of the Schiff base ligands and catechol spiroborates were investigated using - and fluorescence spectra in the C2H5OH. The antioxidant activities of newly synthesized Schiff base ligands and their catechol spiroborates were investigated using the 2,2-diphenyl-1-picrylhydrazyl (DPPH) radical scavenging ability and reducing power ability. Among the synthesized catechol spiroborates, (L2B) exhibited the maximum radical scavenging (91.5 +/- 2.11%) and reducing power activity (0.654 +/- 0.015) at a concentration of 200.0 mu g/mL. Antibacterial activity was determined using 3 Gram positive and 2 Gram negative bacteria by disk diffusion method. Schiff base (L2H) was found to be effective against all test bacteria used. Besides, the DNA binding activity of the catechol spiroborates was determined using Calf Thymus DNA, and the DNA cleavage activity was determined using pBR-322 plasmid DNA by agarose gel electrophoresis method. (C) 2021 Elsevier B.V. All rights reserved.
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    The preparation and characterization of the novel mono-/binuclear boron-based materials for supercapacitor electrode applications
    (Springer Int Publ Ag, 2022) Hansu, Tulin Avci; Kilic, Ahmet; Soylemez, Rahime; Akdemir, Murat; Kaya, Mustafa; Horoz, Sabit
    The goal of this research is to employ synthesized mono- and binuclear boron-containing compounds (C16H12BF6NO2 center dot HCl (B) and C42H34B2Cl2F12N4O4 (B <- N)) as electrodes in supercapacitor applications for the first time and test their specific capacitances in the presence of various electrolyte solutions. Experimental findings show that the specific capacitance value of the binuclear boron-based (B <- N) electrode is larger than that of the mononuclear boron-based (B) electrode in the presence of both distinct electrolyte solutions as a consequence of the electrochemical tests. Moreover, when the morphological qualities of both substances are evaluated, it is discovered that binuclear boron-based (B <- N) has a more porous structure and, as a result of the surface area measurement, has a greater surface area than mononuclear boron-based (B). As a part of this experiment, it has been established that binuclear boron-based (B <- N) is a viable material for future supercapacitor energy storage applications.