Yazar "Ülker, Emine" için listeleme
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3,3'-diaminobenzidinin kopolimer ve kompozitlerinin elektrokimyasal olarak hazırlanması, karakterizasyonu ve fenolik bileşiklerin tayininde kullanılması
Ülker, Emine (Recep Tayyip Erdoğan Üniversitesi / Fen Bilimleri Enstitüsü / Kimya Bölümü / Kimya Anabilim Dalı, 2014)Bu çalışmada, metilenklorür ve asetonitril ortamlarında Poli(3,3'diaminobenzidin) (PDAB), Poli(3-metiltiyofen) (P3MT) ve Polianilin (PANI) içeren 12 farklı kopolimer ile ferrosen, vinilferrosen, Polivinilferrosen (PVF) ve ... -
Anticancer evaluation of a manganese complex on HeLa and MCF-7 cancer cells: design, deterministic solvothermal synthesis approach, Hirshfeld analysis, DNA binding, intracellular reactive oxygen species production, electrochemical characterization and density functional theory
Abbas, Saghir; Rashid, Faisal; Ülker, Emine; Zaib, Sumera; Ayub, Khurshid; Ullah, Sana; Nadeem, Muhammad Arif; Yousuf, Sammer; Ludwig, Ralf; Ali, Saqid; Iqbal, Jamshed (Taylor & Francis Inc, 2020)Herein, a deterministic solvothermal strategy was employed to synthesize an efficient anticancer agent 'cis-dichlorobis(1,10-phenanthroline)manganese(II)' (Mn(phen)(2)Cl-2). A single-crystal X-ray diffraction analysis ... -
Cobalt borophosphate on nickel foam as an electrocatalyst for water splitting
Ülker, Emine; Akbari, Sina Sadigh; Karadaş, Ferdi (Elsevier, 2022)One of the most critical steps in the transition to carbon-free energy systems is sustainable hydrogen evolution from water. In this research, a cobalt borophosphate crystalline compound consisting of phosphate and borate ... -
A cyanide-based coordination polymer for hydrogen evolution electrocatalysis
Alsaç, Elif Pınar; Ülker, Emine; Nune, Satya Vijaya Kumar; Karadaş, Ferdi (Springer, 2018)Research on H-2 production has recently been directed to the development of cost-efficient and robust heterogeneous catalysts for hydrogen evolution reaction (HER). Given the promising catalytic activities of several ... -
Determination of epinephrine in human serum using a Pt electrode modified by polyaniline-poly(3-methylthiophene)-poly(3,3 '-diaminobenzidine)
Ülker, Emine; Kavanoz, Muammer (Canadian Science Publishing, Nrc Research Press, 2015)A Pt electrode modified by polyaniline-poly(3-methylthiophene)-poly(3,3'-diaminobenzidine) was used for amperometric determination of epinephrine in a solution of NaHSO4/Na2SO4 (pH 2.0). For these studies, potentials between ... -
Determination of hydroquinone using Poly(3-methylthiophene) hynthesized electrochemically on Pt electrode in methylene chloride
Kavanoz, Muammer; Buk, Ufuk; Ülker, Emine (Wiley-Blackwell, 2014)Poly(3-methylthiophene) (P3MT) film was synthesized by potentiodynamic method on Pt electrode in methylene chloride solution containing 0.10M tetrabuthlammonium perchlorate supporting electrolyte and used for the determination ... -
Effect of cobalt doping on photocatalytic water splitting activity of NiTi-layered double hydroxide
Samuei, Sara; Akbari, Sina Sadigh; Ülker, Emine; Karadaş, Ferdi (Royal Soc. Chemistry, 2022)Metal doping has been used as an effective strategy to tune the energy levels of semiconductors. Herein, we dope NiTi layered double hydroxide (NiTi-LDH) with cobalt to prepare a ternary LDH, CoNiTi-LDH, to enhance its ... -
The effect of polymer capping group to the electrocatalytic water oxidation activities of prussian blue analogues
Ülker, Emine (Turkish Chemical Society, 2020)Prussian Blue (PB) nanoparticles can be obtained by reacting the hexacyanometal center with metal ions in the existence of polymers such as polyethyleneglycol (PEG). In this study, a pentacyanometal complex, [Fe(CN)5NO]2-, ... -
Electrocatalytic hydrogen evolution with cobalt-poly(4-vinylpyridine) metallopolymers
Kap, Zeynep; Ülker, Emine; Nune, Satya Vijaya Kumar; Karadaş, Ferdi (Springer, 2018)A facile synthetic pathway using poly(4-vinylpyridine) as a polypyridyl platform is reported for the formation of a metallopolymer. Electrochemical studies indicate that the metallopolymer acts as an efficient H-2 evolution ... -
Electrode prepared with combination of different conductive polymers for hydroquinone determination in river water
Ülker, Emine; Kavanoz, Muammer (Slovensko Kemijsko Drustvo, 2016)Modified electrode based on combination of different conductive polymers (polyaniline -poly(3-methylthiophene) poly( 3,3'-diaminobenzidine) (PANI - P3MT - PDAB)) was previously synthesized in dichloromethane containing ... -
Enhancing oxygen evolution catalytic performance of nickel borate with cobalt doping and carbon nanotubes
Enez, Semra; Konuksever, Veysel Karani; Samuei, Sara; Karadaş, Ferdi; Ülker, Emine (Wiley, 2023)Metal borates have recently been recognized as alternative earth-abundant water oxidation catalysts. Herein, we employed solid-state synthesis to prepare a series of Ni-Co borates, NiaCo(3-a)(BO3)(2), with a Kotoite structure ... -
Hydrothermally synthesized cobalt borophosphate as an electrocatalyst for water oxidation in the pH range from 7 to 14
Ülker, Emine (Wiley-V C H Verlag Gmbh, 2019)The synthesis of earth-abundant-metal-based, robust, efficient and cost-effective water oxidation electrocatalysts is necessary for renewable energy conversion processes. in this study, a crystalline cobalt borophosphate ... -
Metal dicyanamides as efficient and robust water-oxidation catalysts
Nune, Satya Vijaya Kumar; Başaran, Aysun Tekin; Ülker, Emine; Mishra, Rupali; Karadaş, Ferdi (Wiley-V C H Verlag Gmbh, 2017)Non-oxide cobalt-based water-oxidation electrocatalysts have received attention recently for their relative ease of preparation, they are stable both in acidic and basic media, and they have higher turnover frequencies ... -
Non-enzymatic phenol determination in river water over modified electrode with poly(3-methylthiophene)
Kavanoz, Muammer; Bük, Ufuk; Ülker, Emine (2016)T his paper describes non-enzymatic phenol determination using poly(3methylthiophene) coated Pt electrode. Modified electrode was prepared on Pt disc surface in dichloromethane medium containing 500 mM 3-methylthiophene ... -
A novel polyaniline-poly(3-methylthiophene)-poly(3,3 '-Diaminobenzidine) electrode for the determination of dopamine in human serum
Kavanoz, Muammer; Ülker, Emine; Buk, Ufuk (Taylor & Francis Inc, 2015)A polyaniline-poly(3-methylthiophene)-poly(3,3 '-diaminobenzidine) film was deposited on a platinum disc electrode in dichloromethane containing tetrabuthylammonium perchlorate supporting electrolyte and used for the ... -
Polianilin-poli(3-Metiltiyofen)-poli(3,3'- diaminobenzidin) elektrot üzerinden dopac tayini
Kavanoz, Muammer; Ülker, Emine (2015)Dopaminin önemli metaboliti olan 3,4-dihidroksifenilasetik asit (DOPAC) önemli bir biyolojik moleküldür [1]. Dopamin ile birlikte DOPAC; şizofreni [2], epilepsi [3], Parkinson [4], alzhemier [5] gibi nörolojik bozuklukların ... -
Synthesis of poly(vinylferrocene) perchlorate/poly(3,3 '-Diaminobenzidine) modified electrode in dichloromethane for electroanalysis of hydroquinone
Ülker, Emine; Kavanoz, Muammer (Soc Brasileira Quimica, 2015)Poly(vinylferrocenium) perchlorate-poly(3,3'-diaminobenzidine) (PVF+ClO4--PDAB) composite film was synthesized electrochemically for the first time on Pt disc electrode in a dichloromethane solution containing poly(vinylferrocene) ... -
Tuning the electronic properties of prussian blue analogues for efficient water oxidation electrocatalysis: Experimental and computational studies
Alsaç, Elif Pınar; Ülker, Emine; Nune, Satya Vijaya Kumar; Dede, Yavuz; Karadaş, Ferdi (Wiley-V C H Verlag Gmbh, 2018)Although several Prussian Blue analogues (PBAs) have been investigated as water oxidation catalysts, the field lacks a comprehensive study that focuses on the design of the ideal PBA for this purpose. Here, members of a ... -
Water oxidation electrocatalysis with a cobalt-borate-based hybrid system under neutral conditions
Turhan, Emine A.; Nune, Satya Vijaya Kumar; Ülker, Emine; Şahin, Ufuk; Dede, Yavuz; Karadaş, Ferdi (Wiley-V C H Verlag Gmbh, 2018)The development of new water oxidation electrocatalysts that are both stable and efficient, particularly in neutral conditions, holds great promise for overall water splitting. in this study, the electrocatalytic water ...
