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İptal
Bulunan: 5 Adet 0.001 sn
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Filtreler
Bulunan: 5 Adet 0.001 sn
Veri Tabanları : Wiley ✕Araştırmacılar : Ali Osman SOLAK ✕
Koleksiyon [1]
Araştırmacılar [1]
BM Sürdürülebilir Kalkınma [2]
Fakültesi / Enstitütü [1]
Yayın Türü [1]
Yayımlanma Yılı [4]
Dil [1]
Kaynak [2]
Veri Tabanları [3]
İndex Türü [2]
Yayıncı [2]
Bölümü [1]
Ulusal/Uluslararası [1]
Konu Başlıkları [26]
Prof. Dr. Ali Osman SOLAKMühendislik Fakültesi
Erişime Açık

Fabrication of an Electrochemical E. coli Biosensor in Biowells Using Bimetallic Nanoparticle-Labelled Antibodies

Ali Osman SOLAK

An electrochemical biosensor was developed for the determination of Escherichia coli (E. coli) in water. For this purpose, silver-gold core-shell (Ag@Au) bioconjugates and anti-E. coli modified PS-microwells were designed in a sandwich-type format in order to obtain higher sensitivity and selectivity. Ag@Au bimetallic nanoparticles were synthesized by co-reduction method. The core-shell formation was analyzed by using UV-Vis spectroscopy and transmission electron microscopy. Biotin labeled anti-E. coli antibodies were coupled with Ag@Au nanoparticles to form bioconjugates. The electrochemical ...Daha fazlası

Makale 2015 Mühendislik Fakültesi Electroanalysis27 ( 2 ) 32 Görüntülenme
Erişime Açık

Evaluation of Some Redox Mediators in the Design of Reagentless Amperometric Glucose Biosensor

Ali Osman SOLAK

The influence of redox mediators (tetrathiafulvalene (TTF), tetrathiafulvalene-tetracyanoquinodimethane complex (TTF-TCNQ), phenazine methosulfate (PMS), 5,6-diamino-1,10-phenonthroline (5,6-DAP), potassium ferrocyanide (K4[Fe(CN)6]), methylene blue (MB) and toluidine blue (TB)) on the response of amperometric glucose biosensor was investigated in this research. Graphite rod electrode (GRE) modified by adsorbed mediator and glucose oxidase (GOx) cross-linked with glutaraldehyde was served as working electrode. The highest amperometric signals were observed by using TTF and TTF-TCNQ as mediator ...Daha fazlası

Makale 2014 Mühendislik Fakültesi Electroanalysis26 ( 7 ) 70 Görüntülenme
Erişime Açık

Synthesis, characterization, and application of silver nanoparticle-thiophenol nanocomposite film on the glassy carbon surface

Ali Osman SOLAK

In this study, 4-thiophenol modified glassy carbon electrode was prepared by the reduction of 4-diazothiophenol tetrafluoroborate salt. Silver nanoparticles were attached to the thiophenol modified surface to prepare a thiophenol-silver nanoparticle composite film. 4-Aminothiopenol molecules were deposited by self-assembling technique to form multi-layered nanofilms of TP/SNP/PhNH2 on glassy carbon substrate. These surfaces were characterized by cyclic voltammetry, electrochemical impedance spectroscopy, X-ray photoelectron spectroscopy, reflectance-absorption infrared spectroscopy, and ellips ...Daha fazlası

Makale 2013 Mühendislik Fakültesi Surface and Interface Analysis45 ( 13 ) 44 Görüntülenme
Erişime Açık

Biofuel Cell Based on Anode and Cathode Modified by Glucose Oxidase

Ali Osman SOLAK

A single compartment biofuel cell (BFC) based on an anode and a cathode powered by the same fuel glucose is reported. Glucose oxidase (GOx) from Aspergillus niger was applied as a glucose consuming biocatalyst for both anode and cathode of the BFC. The 5-amino-1,10-phenanthroline modified graphite rod electrode (GRE) with cross-linked GOx was used as the bioanode, and the GRE with co-immobilised horseradish peroxidase and GOx was exploited as the biocathode of the BFC. The open-circuit voltage of the designed BFC exceeded 450 mV and a maximal power density of 3.5 µW/cm2 was registered at a cel ...Daha fazlası

Makale 2013 Mühendislik Fakültesi Electroanalysis25 ( 12 ) 123 Görüntülenme
Erişime Açık

Modification of glassy carbon electrode by the electrochemical oxidation of 3-aminophenylcalix[4]pyrrole in nonaqueous media

Ali Osman SOLAK

3-Aminophenylcalix[4]pyrrole (3APCP) was grafted to a glassy carbon (GC) surface during the electrochemical oxidation process in 0.1 M tetrabutylammoniumtetra-fluoroborate (TBATFB) containing acetonitrile solution. The presence of a surface film was confirmed electrochemically by comparing voltammograms of dopamine and ferricyanide redox probes at the bare and modified electrodes. Reflection-absorption infrared spectroscopy (RAIRS), XPS, atomic force microscopy (AFM), ellipsometry and the contact angle measurements were also employed to characterize 3APCP film on GC electrode. RAIRS analysis r ...Daha fazlası

Makale 2012 Mühendislik Fakültesi Surface and Interface Analysis44 ( 2 ) 59 Görüntülenme
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