Yazar "Karaoğlu, Kaan" için 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 ... -
Assessment of microplastic pollution in eleven commercial fish species in the Gulf of İzmir (Aegean Sea, eastern Mediterranean)
Eryaşar, Ahmet Raif; Mutlu, Tanju; Karaoğlu, Kaan; Veske, Erdinç; Gedik, Kenan (Elsevier, 2024)With global plastic production reaching 400 million tons in 2022, concerns about plastic pollution in the seas are increasing day by day. Therefore we focused on the abundance, characteristics, and chemical composition of ... -
Bis-N2O2 donör düzenlenmesi içeren iki yeni makroasiklik Schiff bazı ligandı ve komplekslerinin sentezi, karakterizasyonu
Karaoğlu, Kaan (Rize Üniversitesi / Fen Bilimleri Enstitüsü / Kimya Anabilim Dalı, 2009)Bu çalışmada, tetranaftaldehit türevi iki yeni Schiff bazı ligandı ve dinükleer Mn(II), Ni(II), Cu(II) ve Zn(II) kompleksleri sentezlenmiştir. Sentezlenen bileşiklerin yapıları IR, 1H-NMR, 13C-NMR, UV-visible spektroskopisi, ... -
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 ... -
Colorimetric and fluorimetric sensing of trace amount of Hg2+in real samples by a new rhodamine B-based Schiff base probe: Smartphone, living cell applications and DFT calculation
Ejder, Nebahat; Karaoğlu, Kaan; Levent, Zeynep; Alçay, Yusuf; Özdemir, Emre; Yavuz, Özgür; Kaya, Kerem; Kopar, Merve; Tüzün, Nurcan Şenyurt; Yılmaz, İsmail (Elsevier, 2024)In this study, a Schiff base-based probe, named as 2-((methyl benzoate-4-yl)methyleneamino)-3 ',6 '-bis(diethylamino)spiro[isoindoline-1,9 '-xanthene]-3-one (2), was successfully synthesized and characterized by various ... -
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 ... -
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, ... -
Ferrocenyl-substituted dinuclear Cu(II) complex: Synthesis, spectroscopy, electrochemistry, DFT calculations and catecholase activity
Emirik, Mustafa; Karaoğlu, Kaan; Serbest, Kerim; Menteşe, Emre; Yılmaz, İsmail (Elsevier Science Bv, 2016)A new ferrocenyl-substituted heterocyclic hydrazide ligand and its Cu(II) complex were prepared. the DFT calculations were performed to determine the electronic and molecular structures of the title compounds. the electronic ... -
Ferrosen birimi içeren azin ve hidrazit türevi ligantlar, Cu(II) komplekslerinin sentezi, karakterizasyonu ve teorik incelenmeleri
Karaoğlu, Kaan (Recep Tayyip Erdoğan Üniversitesi / Fen Bilimleri Enstitüsü / Kimya Anabilim Dalı, 2014)Bu çalışmada, ferrosen birimi içeren redoks aktif beş azin ve üç hidrazit türevi ligandlar ve bunların Cu(II) kompleksleri sentezlenmiştir. Sentezlenen bileşiklerin yapıları IR, UV/Vis., 1H ve 13C NMR, kütle, X-ışınları ... -
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. ...
