Yazar "Karaoğlu, Kaan" için Teknik Bilimler Meslek Yüksekokulu Koleksiyonu listeleme
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Acetate bridged dinuclear Cu(II) complexes with ferrocene based benzimidazol ligands: Synthesis, spectroscopy, electrochemistry, DFT calculations and catecholase activity
Karaoğlu, Kaan; Emirik, Mustafa; Menteşe, Emre; Zengin, Ali; Serbest, Kerim (Pergamon-Elsevier Science Ltd, 2016)Two new benzimidazole ligands, 1-[(E)-ferrocenylmethylidenehydrazino]-2-{5,6-dichloro-2-[(o-chloro-phenyl)methyl]-1,3-diaza-1H-inden-1-yl}-1-ethanone (1) and 1-[(E)-ferrocenylmethylidenehydrazino]-2-{2-[p-(trifluoromethy ... -
The broad-scale microplastic distribution in surface water and sediments along Northeastern Mediterranean shoreline
Gedik, Kenan; Eryaşar, Ahmet Raif; Öztürk, Rafet Çağrı; Mutlu, Erhan; Karaoğlu, Kaan; Şahin, Ahmet; Özvarol, Yaşar (Elsevier, 2022)Plastics manufactured to fulfil the unique demands of civilization accumulate in the sea due to their durability. Microplastics (MP) pose a greater threat than macroplastics as they can easily enter the aquatic environment ... -
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 ... -
Characterization of microplastic pollution in tadpoles living in small water-bodies from Rize, the northeast of Turkey
Karaoğlu, Kaan; Gül, Serkan (Pergamon-Elsevier Science Ltd, 2020)Microplastic pollution is a growing problem for Turkey and other countries, but most studies focus on the pollution in oceans and seas. To understand the relationship between microplastics, fresh water, and terrestrial ... -
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 ... -
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 ... -
Mononuclear Cu(II) complex of an oxime ligand derived from N-Heterocyclic hydrazide: Synthesis, spectroscopy, electrochemistry, DFT calculations and catecholase activity
Zengin, Ali; Karaoğlu, Kaan; Emirik, Mustafa; Menteşe, Emre; Serbest, Kerim (Elsevier Science Bv, 2019)A new oxime derivative N-heterocyclic hydrazide ligand, N'-[(1E,2E)-2-(hydroxyimino)-1-methylpropylidene]-2-[(4-methyl-5-phenyl-4H-1,2,4-triazol-3-1)thio] acetohydrazide (1) and its mono-nuclear copper(II) complex (1a) ... -
Nano-sized and microporous palladium catalyst supported on modified chitosan/cigarette butt composite for treatment of environmental contaminants
Baran, Talat; Karaoğlu, Kaan; Nasrollahzadeh, Mahmoud (Elsevier, 2022)This study reports a versatile process for the fabrication of a microporous heterogeneous palladium nanocatalyst on a novel spherical, biodegradable, and chemically/physically resistant catalyst support consisting of ... -
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), ... -
New Chromenylium-cyanine based dual channel chemosensors for copper and hypochlorite sensing
Karaoğlu, Kaan; Kaya, Kerem; Yılmaz, İsmail (Elsevier Sci Ltd, 2020)Based on a change in optical properties of chromenylium-cyanine Schiff base derivatives (5a-c), a series of colorimetric dual sensors have been for the first time designed, synthesized and characterized to monitor Cu2+ and ... -
A new chromenylium-cyanine chemosensor for switch-ON near-infrared copper (II) sensing
Karaoğlu, Kaan (Elsevier, 2020)A highly selective and sensitive near-IR chemosensor having a chromenylium-cyanine backbone for the detection of Cu2+ in aqueous samples has been designed and synthesized. the sensor has exhibited linear optical response ... -
New ferrocenyl naphthoquinone fused crown ether chemosensors: Highly selective, kinetically and regio controlled colorimetric, beryllium ion recognition
Alçay, Yusuf; Yavuz, Özgür; Gelir, Ali; Atasen, Seçil Kırlangıç; Karaoğlu, Kaan; Yücel, Barış; Tüzün, Nurcan Şenyurt; Yılmaz, İsmail (Elsevier Science Sa, 2018)New organometallic chemosensors which are based on triad molecules, ferrocenyl naphthoquinone linearly/angularly fused crown ethers (Fc-cnq-1a and Fc-cnq-1b) bearing ferrocene, quinone, and crown ether functional groups ... -
A new fluorescent "turn-off" coumarin-based chemosensor: Synthesis, structure and Cu-selective fluorescent sensing in water samples
Karaoğlu, Kaan; Yılmaz, Fatih; Menteşe, Emre (Springer/Plenum Publishers, 2017)We report the synthesis and characterization two coumarin-based fluorescence probes, N'-{[7-(diethylamino)-2-oxo-2H-chromen-3-yl]carbonyl}pyridine-3-carbohydrazide (3) and N'-benzoyl-7-(diethylamino)-2-oxo-2H-chromene-3- ... -
Occurrence of microplastics in herpetological museum collection: Grass snake (Natrix natrix [Linnaeus, 1758]) and dice anake (Natrix tessellata [Laurenti, 1769]) as model organisms
Gül, Serkan; Karaoğlu, Kaan; Özçifçi, Zehra; Candan, Kamil; Ilgaz, Çetin; Kumlutaş, Yusuf (Springer, 2022)Microplastics are plastic fragments with a size less than 5 mm in length. In addition to a threat to the marine environments where these are abundantly present, these have also started polluting freshwater ecosystems. ... -
Oxime derivative unsymmetrical azine, its Ni(II), Cu(II) and Zn(II) complexes: Synthesis, spectroscopy and catecholase activity
Serbest, Kerim; Göktekin, Özge; Karaoğlu, Kaan; Zengin, Ali; Coruh, Ufuk (Wiley-Hindawi, 2018)1-[(Z)-{(2E)-[(3E)-3-(hydroxyimino)butan-lidene]hydrazinylidene}methyl]naphthalen -2-ol, H2L (3) was synthesized by the agents of 2-hydroxy-1-naphtaldehyde, 2,3-butanedione monoxime and hydrazine in two steps. the structures ... -
Plastic occurrence in commercial fish species of the Black Sea
Aytan, Ülgen; Esensoy, Fatma Başak; Şentürk, Yasemen; Arifoğlu, Esra; Karaoğlu, Kaan; Ceylan, Yusuf; Valente, Andre (Central Fisheries Research, 2022)The occurrence of micro- ( 5 mm), meso- (5-25 mm) and macroplastics ( 25mm) was investigated in seven commercial fish species of the Black Sea. Plastics were found in gastrointestinal track of all species analysed: Engraulis ... -
Plastic occurrence in fish caught in the highly industrialized Gulf of Izmit (Eastern Sea of Marmara, Turkiye)
Aytan, Ülgen; Esensoy, Fatma Başak; Şentürk, Yasemen; Güven, Olgaç; Karaoğlu, Kaan; Erbay, Murat (Elsevier, 2023)Occurrence of micro-(<5 mm) and mesoplastics (5-25 mm) in twelve fish species caught off Gulf of Izmit in the Sea of Marmara was investigated. Plastics were found in the gastrointestinal tracks of all the analysed species: ... -
Preparation and characterization of the highly efficient tetraphenylimidazole substituted Phthalocyanine/ZnO composite and investigation of its effect on the photocatalytic degradation of Rhodamine B and 2,4,6-trichlorophenol
Karaoğlu, Kaan; Yüzüak, Gizem Durak; Yüzüak, Ercüment; Turan, Hanife; Akçay, Hakkı Türker (Elsevier, 2024)Growing concerns about industrial waste-induced environmental degradation have driven research towards sustainable solutions. Photocatalytic degradation, fueled by light and avoiding harmful chemicals, offers a promising ... -
Spatiotemporal distribution of microplastics in true frogs (Ranidae: Pelophylax) populations from Turkiye
Dursun, Cantekin; Karaoğlu, Kaan; Özdemir, Nurhayat; Candan, Kamil; Kumlutaş, Yusuf; Ilgaz, Çetin; Gül, Serkan (Elsevier, 2023)Microplastics (MPs), which are of increasing concern in almost all ecosystems, continue to be an environmental threat. In the present study, the presence of MPs is investigated by using the gastrointestinal tracts (GITs) ... -
Studies on synthesis, structure, and DNA cleaving of homo-dinuclear Mn(II), Cu(II), Ni(II), and Zn(II) complexes with a heterocycle-based macroacyclic Schiff base
Baran, Talat; Karaoğlu, Kaan; Serbest, Kerim; Ağır, Hülya; Sandallı, Cemal; Değirmencioğlu, İsmail (Springer Wien, 2013)(E,E',E'',E''')-N,N',N'',N'''-[(1,2-ethenyliden)tetrakis[methylenoxy(2,1-naphthalinediyl)methylidyne]tetrakis[1,2,4-triazol-4-amine] and its novel homo-dinuclear Mn(II), Ni(II), Cu(II), and Zn(II) complexes have been ...