Yazar "Akçay, Hakkı Türker" için listeleme
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4-(4-(( 5-Amino-1,3,4-thiadiazol-2-yl)methoxy) phenyl)-1-(( 5-amino-1,3,4-thiadiazol-2-yl)methyl)-3-benzyl-1H-1,2,4-triazol-5( H)-one: Synthesis, characterization and computational studies
Ünlüer, Dilek; Ünver, Yasemin; Duğdu, Esra; Akçay, Hakkı Türker; Sancak, Kemal (Bentham Science Publ Ltd, 2016)Background: 1,2,4-triazole and its derivatives are known to have various biological activities such as antifungal, antiviral, antidepressant, antitumor, anti-inflammatory, antitubercular, antimigrain and anti-cancer. ... -
Catalytic activity of palladium doped activated carbon from waste coffee on some environmental pollutants
Karaoğlu, Kaan; Özçifçi, Zehra; Çalışkan, Melike; Baran, Talat; Akçay, Hakkı Türker (Elsevier, 2022)The presence of nitro compounds and such commercial dyes as Congo red, methylene blue, methyl orange and methyl red in water/wastewater causes environmental issues. The treatment of such industrial contaminants, new efficient ... -
Computational studies on the anastrozole and letrozole, effective chemotherapy drugs against breast cancer
Akçay, Hakkı Türker; Bayrak, Rıza (Pergamon-Elsevier Science Ltd, 2014)In this paper, computational studies were carried out on anastrozole and letrozole, chemotherapy drugs used against breast cancer. Optimization and frequency calculations were performed at B3LYP/6-31G (d) basis set and ... -
Crystal structure of 4-[(4-Ethyl-5-Phenyl-4H-1,2,4-Triazol-3-yl)sulfanyl]phthalonitrile
Ustabaş, Reşat; Çoruh, Ufuk; Akçay, Hakkı Türker; Menteşe, Emre; Vazquez-Lopez, E. M. (Pleiades Publishing Inc, 2018)The structure of the 4-[(4-ethyl-5-phenyl-4H-1,2,4-triazol-3-yl)sulfanyl]phthalonitrile titled molecule is determined by means of X-ray diffraction. the title compound has weak inter- and intramolecular C-H...N-type hydrogen ... -
Detection of Fe2+ in acetonitrile/water mixture by new 8-hydroxyquinolin based sensor through metal displacement mechanism
Karaoğlu, Kaan; Akçay, Hakkı Türker; Yılmaz, İsmail (Elsevier Science Bv, 2017)A 8-hydroxyquinoline-based (8-HQ) fluorescent ligand (2) was designed and synthesized by condensation of pyridine-2-carboxaldehide with 2-(quinolin-8-yloxy)acetohydrazide (1). Fluorometric titrations with various metal ... -
The effective polymeric macromolecule as peroxymonosulfate activator as an alternative to metal oxides in the treatment of organic dye pollutants
Demi̇r, Adem; Akçay, Hakkı Türker; Özçi̇fçi̇, Zehra; Keleş, Turgut (Elsevier, 2024)Catalyst efficiency is affected by inhomogeneous catalyst atom placement on the substrate, leading to nano-level aggregation and reduced performance. Research on single-atom catalysts aims to place them at the atomic level ... -
The electrochemical and spectroelectrochemical properties of metal free and metallophthalocyanines containing triazole/piperazine units
Demirbaş, Ümit; Akyüz, Duygu; Mermer, Arif; Akçay, Hakkı Türker; Demirbaş, Neslihan; Koca, Atıf; Kantekin, Halit (Pergamon-Elsevier Science Ltd, 2016)The synthesis and characterization of novel peripherally tetra [1,2,4]-triazole substituted metal-free phthalocyanine and its metal complexes (Zn(II), Ni(II), Pb(II), Cu(II) and Fe(II)) and the investigation of electrochemical ... -
Electrochemical and spectroelectrochemical study on novel non-peripherally tetra 1,2,4-triazole substituted phthalocyanines
Demirbaş, Ümit; Akyüz, Duygu; Akçay, Hakkı Türker; Koca, Atif; Bekircan, Olcay; Kantekin, Halit (Elsevier Science Bv, 2018)In the present study novel tetra 4-(4-fluorophenyI)-5-(4-methoxypheny1)-4H-1,2,4-triazole-3-thio substituted non-peripherally metal free (4), zinc(II) (5), lead (II) (6) and copper(II) (7) phthalocyanines were synthesized. ... -
Electrochemistry of novel phthalocyanines bearing 1,2,4 triazole groups
Akyüz, Duygu; Demirbaş, Ümit; Akçay, Hakkı Türker; Menteşe, Emre; Koca, Atif; Kantekin, Halit (Wiley-V C H Verlag Gmbh, 2020)The phthalonitrile (3) and triazole substituted metallo phthalocyanines (MPc) (4-7) were prepared. the novel compounds were characterized with spectroscopic data. Electrochemical analyses of metallophthalocyanines (4-7) ... -
Electrochemistry of novel tetra peripherally and non-peripherally substituted phthalocyanines bearing morpholine groups
Akyüz, Duygu; Demirbaş, Ümit; Akçay, Hakkı Türker; Koca, Atıf; Kantekin, Halit (Elsevier Science Sa, 2020)Morpholine bearing phthalonitriles (3a and 3b) and peripherally and non-peripherally tetra substituted TiOPc and CuPc complexes (4a-5b) were prepared. Electrochemical responses of metallophthalocyanines were analysed and ... -
Experimental and computational studies on 4-[(3,5-dimethyl-1H-pyrazol-1-yl) methoxy]phthalonitrile and synthesis and spectroscopic characterization of its novel phthalocyanine magnesium(ii) and tin(ii) metal complexes
Akçay, Hakkı Türker; Bayrak, Rıza; Şahin, Ertan; Karaoğlu, Kaan; Demirbaş, Ümit (Elsevier B.V., 2013)The molecular structure of the substituted phthalonitrile was analyzed crystallographically and compared with optimized geometric structure. The structural properties of the compound such as energy, vibrational frequency, ... -
Experimental and theoretical studies of 4-[(4-methyl-5-phenyl-4h1,2,4-tiıazol-3-yl)sulfanyl]benzene-1,2-dicarbonitrile
Çoruh, Ufuk; Ustabaş, Reşat; Akçay, Hakkı Türker; Menteşe, Emre; Vazquez Lopez, Ezequiel M. (Soc Chemists Technologists Madeconia, 2016)In this study, 4-[(4-methy1-5-pheny1-4H-1,2,4-triazol-3-yl)sulfanyl]benzene-1,2-dicarbonitrile was synthesized and its molecular structure was characterized by means of FT-IR. and X-ray diffraction methods. the crystal is ... -
Mesoporous chromium oxide doped palladium catalysis for cyanation reaction of some aryl halides
Karaoğlu, Kaan; Akçay, Hakkı Türker; Özçifçi, Zehra; Çalışkan, Melike; Baran, Talat (Elsevier, 2021)A Pd/Cr2O3 hybrid catalyst for cyanation reaction of some aryl halides was synthesized and characterized by XRD, SEM/EDS and TEM. The porous structure of the catalyst was also investigated by BET analysis. All XRD ... -
Metallo-phthalocyanines containing triazole substituents: Synthesis, spectroscopic and photophysicochemical properties
Demirbaş, Ümit; Öztürk, Dilek; Akçay, Hakkı Türker; Durmuş, Mahmut; Menteşe, Emre; Kantekin, Halit (Taylor & Francis Ltd., 2022)Magnesium(II) (4), lead(II) (5) and zinc(II) (6) phthalocyanines were prepared. The structures of 4-6 were confirmed by the spectroscopic characterization such as FT-IR, H-1-NMR, MALDI-TOF mass, UV-vis and fluorescence ... -
Microplastic contamination and risk assessment in table salts: Turkey
Özçifçi, Zehra; Başaran, Burhan; Akçay, Hakkı Türker (Elsevier, 2023)In this study, the characterization of microplastics of table salts (n = 36) was determined by FT -IR. Then, individuals' exposure to microplastics from table salt consumption was calculated with a deterministic model, and ... -
Microplastic contamination in some beverages marketed in türkiye: Characteristics, dietary exposure and risk assessment
Başaran, Burhan; Aytan, Ülgen; Şentürk, Yasemen; Özçifçi, Zehra; Akçay, Hakkı Türker (Elsevier, 2024)In this study, microplastic contamination in water, natural mineral water and mineral water, sparkling soft drinks, cold tea and some traditional beverages marketed in Türkiye were assessed. Microplastics physically and ... -
Microplastics in branded milk: Dietary exposure and risk assessment
Başaran, Burhan; Özçifçi, Zehra; Akçay, Hakkı Türker; Aytan, Ülgen (Elsevier, 2023)In this study, 14 packaged milk of various brands sold in the Türkiye market was examined. The microplastics were physically characterised under the microscope. Their vibrational spectra were recorded with the ATF/FT-IR ... -
Microplastics in honey from Türkiye: Occurrence, characteristic, human exposure, and risk assessment
Başaran, Burhan; Özçifçi, Zehra; Kanbur, Esra Demir; Akçay, Hakkı Türker; Gül, Serkan; Bektaş, Yusuf; Aytan, Ülgen (Elsevier, 2024)In this study, honey samples produced in Türkiye in 2023 were analyzed to assess occurrence of microplastics. The microplastics were physically and chemically characterised by stereomicroscope and FT-IR, respectively. ... -
A new activated carbon-supported Pd-ZnO catalyst for Heck Cross-coupling reactions
Karaoğlu, Kaan; Özçifçi, Zehra; Çalışkan, Melike; Akçay, Hakkı Türker; Baran, Talat (Elsevier, 2023)In this work, to develop catalysts for Heck-type coupling reactions, a hybrid ZnO-Pd nanocatalyst was fabricated on activated carbon sourced from polymer debris. Such techniques as transmission electron microscopy (TEM), ... -
Non-peripherally tetra substituted lead(II), nickel(II) and copper(II) phthalocyanines bearing [1,2,3] triazole moeties: Synthesis, characterization and investigation of electrochemical and spectroelectrochemical properties
Demirbaş, Ümit; Akyüz, Duygu; Akçay, Hakkı Türker; Koca, Atıf; Kantekin, Halit (Elsevier Science Bv, 2019)In this study, the synthesis and characterization of novel [1,2,3] triazole substituted phthalonitrile compound (3) and non-peripherally tetra 3-(2H-benzo[d][1,2,3]triazol-2-yl)-4-hydroxyphenethyl methacrylate substituted ...
