Yazar "Anık, Ülkü" için listeleme
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Graphene oxide-porphyrin composite nanostructure included electrochemical sensor for catechol detection
Ören Varol, Tuğba; Haklı, Özgül; Anık, Ülkü (Royal Society of Chemistry, 2021)In this study, pre-synthesized 5,10,15-tri(4-tert-butylphenyl)-20-(4-phenol)-porphyrin (Por) was incorporated with graphene oxide (GO) via ultrasonication and, as a result, GO–Por was obtained. Morphological and structural ... -
Graphene-Gold Hybrid Nanomaterial Based Impedimetric Immunosensor for H3N2 Influenza A Virus Detection
Tepeli Büyüksünetçi, Yudum; Anık, Ülkü (WILEY-V C H VERLAG GMBH, 2022)H3N2, known as "swine flu" is a kind of influenza A virus that can also infect humans. Therefore, rapid, practical and accurate techniques for H3N2 detection is needed. In this study, we fabricate Graphene-gold hybrid ... -
Graphene-metallic nanocomposites as modifiers in electrochemical glucose biosensor transducers
Altuntaş, Derya Bal; Tepeli, Yudum; Anık, Ülkü (Iop Publishing Ltd, 2016)Graphene sheets and three different graphene-metallic nanocomposites including graphene-copper (graphene-Cu), graphene-nickel (graphene-Ni) and graphene-platinum (graphene-Pt) were prepared and characterized in the first ... -
Graphite epoxy composite electrodes modified with bacterial cells
Anık, Ülkü; Odaci, Dilek; Timur, Suna; Merkoci, Arben; Pazarlioglu, Nurdan; Telefoncu, Azmi; Alegret, Salvador (Elsevier Science Sa, 2006)The modification of a graphite-epoxy composite electrode (GECE) with bacterial cells along with an analytical application are presented. Pseudomonas putida DSM 50026 was used as a biological component and the measurement ... -
An impedimetric approach for COVID-19 detection
Tepeli Büyüksünetçi, Yudum; Çitil, Burak Ekrem; Anık, Ülkü (ROYAL SOC CHEMISTRY, 2021)In this study, an electrochemical approach for the determination of coronavirus disease (COVID-19) was developed. The biosensor system relied on the spike protein (S-protein) based infection mechanism of the virus and ... -
L. Lactis Subsp. Lactis of Cheese Origin Based Microbial Fuel Cell
Avcı, Okan; Büyüksünetçi Tepeli, Yudum; Güley, Ziba; Anık, Ülkü (Wiley, 2021)In this work, Lactococcus lactis subsp. lactis DLP27 (L .lactis) strain isolated from a traditional Turkish raw milk cheese, Divle Obruk Cheese, was used as a biocatalyst on the bioanode combined with a platinum cathode ... -
Label and indicator free electrochemical nanobiosensing of DNA hybridization based on MnO2 nanomaterial modified GCPE
Sultan, Sinan Cemgil; Kara, Pınar; Anık, Ülkü; Özsoz, Mehmet (Royal Soc Chemistry, 2014)A label and indicator free electrochemical DNA hybridization detection method based on a manganese(IV) oxide nanomaterial modified glassy carbon paste composite electrode (MnO2-Nm/GCPE) was developed. 22-mer oligonucleotides ... -
Microbial glucose biosensors based on glassy carbon paste electrodes modified with Gluconobacter Oxydans and graphene oxide or graphene-platinum hybrid nanoparticles
Aslan, Sema; Anık, Ülkü (Springer Wien, 2016)We have performed a study on the performance of two microbial glucose sensors based on immobilized Gluconobacter oxydans (G. oxydans). The first one was prepared by modifying a glassy carbon paste electrode (GCPE) containing ... -
Nanomaterial-based composite biosensor for glucose detection in alcoholic beverages
Anık, Ülkü; Cubukcu, Meliha; Yavuz, Yeliz (Taylor & Francis Ltd, 2013)A composite electrode was prepared by modifying glassy carbon micro particles with gold nanoparticles and glucose oxidase enzyme for glucose detection. In terms of analytical characteristics, a linearity was obtained in ... -
Oxidase mimicking Co/2Fe MOF included biosensor for sialic acid detection
Kıyıkçı, Hüseyin Furkan; Avcı, Okan; Tepeli Büyüksünetçi, Yudum; Timur, Suna; Anık, Ülkü (Elsevier B.V., 2022)A facile amperometric biosensor that included oxidase mimicking Co/2Fe metal-organic framework (MOF) for sialic acid (SA) detection was prepared. Amperometric SA biosensor was constructed on a gold screen-printed electrode ... -
Poly(allylamine hydrochloride) Functionalized Multiwalled Carbon Nanotube Modified Carbon Paste Electrode as Acetylcholinesterase Biosensor Transducer
Çevik, Serdar; Timur, Suna; Anık, Ülkü (Wiley-V C H Verlag Gmbh, 2013)In this work, a sensitive, practical and reliable acetylthiocholine (ATCh) biosensor based on poly(allylamine hydrochloride) functionalized multiwalled carbon nanotube (PAH/MWCNT) was fabricated and used for pesticide ... -
A polyoxy group branched diazo dye as an alternative material for the fabrication of an electrochemical epinephrine sensor
Avcı, Okan; Perk, Benay; Ören Varol, Tuğba; Tepeli Büyüksünetçi, Yudum; Haklı, Özgül; Anık, Ülkü (Royal Soc Chemistry, 2019)In the present study, a novel diazo dye with a polyoxy group (2{2[2(2-methoxyethoxy)ethoxy]ethoxy}-5-[(E)-(4-nitrophenyl)diazenyl]benzaldehyde (AZOTEG)) was used as a modifier to fabricate modified electrochemical platforms ... -
Preparation, Characterization and Electrochemical Application of Graphene-metallic Nanocomposites
Tepeli, Yudum; Anık, Ülkü (Wiley-V C H Verlag Gmbh, 2016)Three different Graphene-Metallic (Graphene-Me) nanocomposites - Graphene-Silver (Graphene-Ag), Graphene-Gold (Graphene-Au) and Graphene-Platinum (Graphene-Pt) nanocomposites - were prepared and characterized. The ... -
Pseudomonas fragi/graphene-gold hybrid nanomaterial bioanode based microbial fuel cell
Avcı, Okan; Büyüksünetci, Yudum Tepeli; Erden, Emre; Timur, Suna; Anık, Ülkü (Royal Society of Chemistry, 2021)A Pseudomonas fragi (P. fragi) and graphene-gold hybrid nanomaterial included a carbon felt electrode (graphene-Au/CFE) bioanode was developed and optimized. Then, this bioanode was combined with a platinum cathode and a ... -
Recent pros and cons of nanomaterials in drug delivery systems
Anık, Ülkü; Timur, Suna; Dursun, Zekerya (Taylor & Francis As, 2020)The attractive features of nanomaterials enable them to be used in a variety of areas including drug delivery (DD) systems. The advantages like better targeting and effective delivery, promote the usage of these materials ... -
Towards the electrochemical diagnosis of cancer: nanomaterial-based immunosensors and cytosensors
Anık, Ülkü; Timur, Suna (Royal Soc Chemistry, 2016)In this review, nanomaterial based electrochemical biosensors including electrochemical immunosensors and cytosensors towards cancer detection are covered. Brief definitions of biosensors together with nanomaterials are ... -
Towards the electrochemical diagnostic of influenza virus: development of a graphene-Au hybrid nanocomposite modified influenza virus biosensor based on neuraminidase activity
Anık, Ülkü; Tepeli, Yudum; Sayhi, Maher; Nsiri, Jihene; Diouani, Mohamed Fethi (Royal Soc Chemistry, 2018)An effective electrochemical influenza A biosensor based on a graphene-gold (Au) hybrid nanocomposite modified Au-screen printed electrode has been developed. The working principle of the developed biosensor relies on the ... -
An Unsymmetrical Perylene Diimide Dye Modified Carbon Felt Electrode as A Novel Electrochemical Platform for Dopamine Detection
Varol, Tugba Oren; Avci, Okan; Hakli, Ozgul; Xue, Chenming; Li, Quan; Anık, Ülkü (Wiley-V C H Verlag Gmbh, 2020)A novel perylene diimide (PDI-C8SAc) was used as a modifier for carbon felt electrode (CFE) and prepared modified electrode was applied for dopamine detection. Obtained electrochemical current was almost 15-fold higher ... -
The usage of a bismuth film electrode as transducer in glucose biosensing
Anık, Ülkü; Timur, Suna; Cubukcu, Meliha; Merkoci, Arben (Springer Wien, 2008)A second generation glucose biosensor was developed by using neutral red (NR) as a mediator and a bismuth film electrode (BiFE) as a transducer along with immobilized glucose oxidase. The linear range was between 0.2 and ... -
Usage of Bismuth Film Electrode as Biosensor Transducer for Alkaline Phosphatase Assay
Anık, Ülkü; Cubukcu, Meliha; Cevik, Serdar; Timur, Suna (Wiley-V C H Verlag Gmbh, 2010)A biosensor for monitoring alkaline phosphatase (ALP) enzyme activity was developed by using bismuth film electrode (BiFE) as transducer. The aim was to test the possible applications of BiFE as transducer in this biosensing ...