Güncel Gönderiler: Fen Fakültesi
Toplam kayıt 2379, listelenen: 1701-1720
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Conservation of quantum efficiency in quantum well intermixing by stress engineering with dielectric bilayers
(IOP Publishing LTD, 2018)In semiconductor lasers, quantum well intermixing (QWI) with high selectivity using dielectrics often results in lower quantum efficiency. In this paper, we report on an investigation regarding the effect of thermally ... -
Determination of Sulfamethoxazole in Pharmaceutical Formulations by Flow Injection System/HPLC with Potentiometric Detection using Polypyrrole Electrode
(Soc Brasileira Quimica, 2011)In this work, it was used a polypyrrole (PPy) electrode as a potentiometric electrochemical detector in a flow injection system in order to determine sulfamethoxazole in pharmaceutical formulations. The PPy electrode was ... -
Electrochemical synthesis and characterization of a new soluble conducting polymer
(Springer, 2009)Electroactive poly(4-methyl carbazole-3-carboxylic acid) (PMCCA) film was formed on Pt electrode surface by oxidative electropolymerization of a new carbazole derivative. The structure of the soluble polymer was elucidated ... -
In situ electrochemical solid-phase extraction of anions and cations using polypyrrole and overoxidized sulfonated polypyrrole
(Elsevier Science BV, 2008)A new method for the extraction of both anions and cations is proposed using electro-synthesized polypyrrole (PPy) and overoxidized sulfonated polypyrrole film (OSPPy). In situ anion (chloride, nitrate, sulfate) and cation ... -
Ion chromatography-potentiometric detection of inorganic anions and cations using polypyrrole and overoxidized polypyrrole electrode
(Elsevier Science Sa, 2008)Polypyrrole (PPy) and overoxidized polypyrrole (OPPy) films were used as a potentiometric detector in ion chromatography, in order to determine some anions and cations in water samples. Electrodeposition of PPy film was ... -
Determination of ascorbic acid by polypyrrole potentiometric detector in ion chromatography
(Elsevier Advanced Technology, 2009)A potentiometric detector, based on electrodeposition of polypyrrole onto Pt electrode, was investigated in this study. The chromatographic performance of the PPy detector was investigated in ion chromatography. The resulting ... -
Removal of calcium and magnesium using polyaniline and derivatives modified PVDF cation-exchange membranes by Donnan dialysis
(Elsevier Science BV, 2009)In this work, polyaniline (PAni), poly-n-ethylaniline, poly-n-methylaniline and poly-o-anisidine were prepared by chemical polymerization. 1,3 (6 or 7)-napthalenetrisulfonic acid was used for the first time in the literature ... -
The Substituent Effects on the Structure and Surface Morphology of Polyaniline
(Wiley, 2010)In this work, poly(2-fluoroaniline), poly(2-chloroaniline), poly(2-methylaniline), and poly(N-ethylaniline) were prepared by a self-assembly method using an oxidizing system consisting of a dopant anion, p-toluene sulfonate ... -
Modification of gate dielectric on the performance of copper (II) phthalocyanine based on organic field effect transistors
(Elsevier GMBH, 2017)Top contact Copper (II) Phthalocyanine (CuPc) based on Organic Field Effect Transistor (OFET) using various dielectrics were fabricated. The bare SiO2 and bilayer Polyvinyl alcohol (PVA)/SiO2 gate insulators with different ... -
Molecular structure, NMR analyses, density functional theory and ab initio Hartree-Fock calculations of 4,4 '-diaminooctafluorobiphenyl
(Elsevier Science BV, 2008)H-1 and F-19 MAS, C-13 and N-15 CP/MAS NMR and liquid phase NMR spectra of 4,4'-diaminooctafluorobiphenyl (DAOFB) have been reported for the first time. H-1, C-13 and N-15 NMR chemical shifts of DAOFB (C12H4F8N2) have been ... -
Vibrational spectroscopic study on some Hofmann type clathrates: M(1-Phenylpiperazine)(2)Ni(CN)(4)center dot 2G (M = Ni, Co and Cd; G = aniline)
(Elsevier Science BV, 2009)New Hofmann type aniline clathrates in the form of M(PP)(2)Ni(CN)(4)center dot 2G (where pp = 1-phenylpiperazine, G = aniline and M = Ni. Co and Cd) have been prepared in powder form and FT-IR and Raman spectra have been ... -
Effect of the Deposition Temperature on the Device Performance of the Nanostructured ZnO Thin Film Transistor by Sol Gel Method
(Amer Scientific Publishers, 2014)In this study, the nanostructured ZnO thin film transistors (TFTs) were fabricated by using sol-gel spin-coating method and the deposition temperature effect on the structural and morphological properties of active layer ... -
Experimental and theoretical NMR study of 4-(3-cyclohexen-1-yl)pyridine
(Pergamon-Elsevier Science LTD, 2008)H-1, C-13, DEPT, COSY, NOESY and HETCOR NMR spectra of 4-(3-cyclohexen-1-yl)pyridine (4-Chpy) have been reported for the first time. H-1 and C-13 NMR chemical shifts of 4-Chpy (C11H13N) have been calculated by means of the ... -
Magnetic Nanoparticles for Plasmid DNA Purification through Hydrophobic Interaction Chromatography
(Taylor & Francis Inc, 2014)Magnetic poly(2-hydroxyethyl methacrylate-co-N-methacryloyl- L-phenyl alanine), p(HEMA-co-MAPA) nanoparticles were produced by emulsion polymerization technique. The nanoparticles were characterized by zetasizer, atomic ... -
Molecularly imprinted cryogel cartridges for the specific filtration and rapid separation of interferon alpha
(Royal Soc Chemistry, 2015)In this study, we synthesised specific filtration cartridges with selective recognition sites for target molecules and used them to separate interferon alpha-2b from aqueous solutions. We combined molecular imprinting ... -
Hydrophobic microbeads as an alternative pseudo-affinity adsorbent for recombinant human interferon-alpha via hydrophobic interactions
(Elsevier Science BV, 2012)Hydrophobic interaction chromatography (HIC) is increasingly used for protein purification, separation and other biochemical applications. The aim of this study was to prepare hydrophobic microbeads and to investigate their ... -
Hydrophobic cryogels for DNA adsorption: Effect of embedding of monosize microbeads into cryogel network on their adsorptive performances
(Wiley-Blackwell, 2013)As alternative hydrophobic adsorbent for DNA adsorption, supermacroporous cryogel disks were synthesized via free radical polymerization. In this study, we have prepared two kinds of cryogel disks: (i) poly(2-hydroxyethyl ... -
Biopolymer based ion imprinting cryogel traps for the removal of Tl(I)
(Taylor & Francis Inc, 2016)The aim of this study is to prepare supermacroporous cryogel with embedded ion imprinted polymer (IIP) particles which can be used for the selective removal of Tl(I) from aqueous solution. In the first step, Tl(I) has ... -
Nondiffracting wave beams in non-Hermitian Glauber-Fock lattice
(Elsevier Science BV, 2018)We theoretically study non-Hermitian Glauber-Fock lattice with nonuniform hopping. We show how to engineer this lattice to get nondiffracting wave beams and find an exact analytical solution to nondiffracting localized ... -
Discrete parametric oscillation and nondiffracting beams in a Glauber-Fock oscillator
(Elsevier Science BV, 2016)We consider a Glauber-Fock oscillator and show that diffraction can be managed. We show how to design arrays of waveguides where light beams experience zero diffraction. We find an exact analytical family of nondiffracting ...