Poly(o-aminophenol) prepared by Cu(II) catalyzed air oxidation and its use as a bio-sensing architecture

Bicak, Tugrul Cem
Soylemez, Saniye
Buber, Ece
Toppare, Levent Kamil
Yağcı, Yusuf
A novel procedure for the preparation of organosoluble polyo-aminophenol) is described. The method pertains to the reduction of CuBr2 with o-amino phenol OAP) at room temperature. The air oxidation of the CuI) species to Cu(II) facilitated the formation of polyo-aminophenol) POAP) in repeated cycles. The obtained polymer, soluble in common organic solvents such as dimethylformamide, acetone, and chloroform, was characterized by spectral analyses. It was found that both quinoid and benzoid structures were present in the polymer chain. Polyo-aminophenol) architecture was then applied as an immobilization matrix to obtain a long-lived and fast response bio-sensing system. Glucose oxidase GOx) was utilized as a model enzyme for the detection of glucose in beverages. After the optimization studies, the surface characterization of POAP/GOx was performed by scanning electron microscopy SEM) measurements. Under the optimized conditions, the biosensor exhibited a rapid response 2 s), a low detection limit 0.02 mM), and high sensitivity 79.80 mu A mM(-1) cm(-2)). The K-M(app) value was determined as 0.16 mM. Furthermore, there was no considerable activity loss for 15 days for the POAP/GOx biofilm indicating excellent recovery as tested with real samples.


Zeolite confined nanostructured dinuclear ruthenium clusters: preparation, characterization and catalytic properties in the aerobic oxidation of alcohols under mild conditions
Zahmakiran, Mehmet; Özkar, Saim (Royal Society of Chemistry (RSC), 2009-01-01)
Zeolite confined nanostructured dinuclear ruthenium clusters as a novel material were prepared by a simple three step procedure: (i) the ion-exchange of Ru3+ ions with the extra-framework Na+ ions in zeolite-Y, (ii) reduction of the Ru3+ ions within the cavities of zeolite with borohydride ions in aqueous solution all at room temperature, (iii) drying the isolated samples under aerobic conditions at 100 +/- 1.0 degrees C. The composition, morphology and structure of zeolite confined nanostructured dinuclear...
Pb(Zr0.52Ti0.48)O-3 films on stainless steel by chemical solution deposition
Özenbaş, Ahmet Macit (2004-01-01)
The present work describes the preparation of Pb(Zr0.52Ti0.48)O-3 thin films by chemical solution deposition. Lead acetate, zirconium propoxide and titanium isopropoxide were used as starting materials. Substrates used were stainless steel foils of 0.025 mm, thick (AISI 304). The preparation of stock solution and heat treatment procedure was described. Crack-free films were obtained by multilayer coating in which the viscosity of the solution was adjusted such that each layer was approximately 0.2 mum thick...
Pentacarbonyl(2-ferrocenylpyridine)metal(0) complexes of Group 6 elements. Synthesis and characterization
Yaman, G; Kayran, C; Özkar, Saim (Springer Science and Business Media LLC, 2005-02-01)
2-Ferrocenylpyridine (2-Fcpy) was prepared according to the literature procedure. 1,1'-Dipyridylferrocene was also obtained as a minor product and characterized by H-1- and C-13-n.m.r. spectroscopy. Prolonged irradiation of Cr(CO)(6) in the presence of 2-Fcpy in n-hexane gave Cr(CO)(5)(2-Fcpy) which could not be isolated due to its instability even at low temperature, but was detected in solution by i.r. spectroscopy. The preparation of Mo(CO)(5)(2-Fcpy) from direct photolysis of Mo(CO)(6) with 2-Fcpy could...
Method-of-lines solution of time-dependent two-dimensional Navier-Stokes equations
Oymak, O; Selçuk, Nevin (1996-09-15)
A novel approach to the development of a code for the solution of the time-dependent two-dimensional Navier-Stokes equations is described. The code involves coupling between the method of lines (MOL) for the solution of partial differential equations and a parabolic algorithm which removes the necessity of iterative solution on pressure and solution of a Poisson-type equation for the pressure. The code is applied to a test problem involving the solution of transient laminar flow in a short pipe for an incom...
Periodic solutions and stability of linear impulsive delay differential equations
ALZabut, Jehad; Ağacık, Zafer; Department of Mathematics (2004)
In this thesis, we investigate impulsive differential systems with delays of the form And more generally of the form The dissertation consists of five chapters. The first chapter serves as introduction, contains preliminary considerations and assertions that will be encountered in the sequel. In chapter 2, we construct the adjoint systems and obtain the variation of parameters formulas of the solutions in terms of fundamental matrices. The asymptotic behavior of solutions of systems satisfying the Perron co...
Citation Formats
T. C. Bicak, S. Soylemez, E. Buber, L. K. Toppare, and Y. Yağcı, “Poly(o-aminophenol) prepared by Cu(II) catalyzed air oxidation and its use as a bio-sensing architecture,” POLYMER CHEMISTRY, pp. 3881–3888, 2017, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/42574.