Yazar "Türkoğlu, Gülsen" için listeleme
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Electrochemical Determination of Paracetamol by a Novel Derivative of Formazan Modified Pencil Graphite Electrode
Görçay, Hakan; Türkoğlu, Gülsen; Şahin, Yücel; Berber, Halil (IEEE-Inst Electrical Electronics Engineers Inc, 2014)A modified electrode, based on electrodeposition of 5,5'-(oxybis(4,1-phenylene))bis(3-(2-hydroxyphenyl)-1-phenylformazan (BF) onto pencil graphite (PG) electrode, was investigated for the determination of paracetamol in ... -
Experimental and computational studies on the absorption properties of novel formazan derivatives
Türkoğlu, Gülsen; Çınar, M. Emin (Scientific Technical Research Council Turkey-Tubitak, 2017)Eight novel 3-(4-(benzyloxy)phenyl)-5-(4-bromophenyl)-1-(4-substituted-phenyl)formazan (4a 4h) were synthesized by coupling of substituted phenylhydrazones with diazonium salts of 4-bromoaniline. The substituted phenylhydrazones, ... -
Novel formazan derivatives containing phenylsulfanyl and carbonyl units: synthesis, optical and electrochemical properties
Türkoğlu, Gülsen; Berber, Halil (Royal Soc Chemistry, 2016)A series of phenylsulfanyl and aryl carbonyl containing formazan derivatives 4a-4h and 5a-5h were synthesized by coupling of substituted phenylhydrazones with diazonium salts of 2-(phenylthio) benzenamine and 5-chloro-2- ... -
Schiff bases as corrosion inhibitor for aluminium in HCl solution
Şafak, Serpil; Duran, Berrin; Yurt, Ayşel; Türkoğlu, Gülsen (Pergamon-Elsevier Science LTD, 2012)Three Schiff bases named 1,5-bis[2-(2-hydroxybenzylideneamino)phenoxy]-3-oxopentane (D1), 1,5-bis[2-(5-chloro-2-hydroxybenzylideneamino)phenoxy]-3-oxopentane (D2) and 1,5-bis[2-(5-bromo-2-hydroxybenzylideneamino)phenoxy] ... -
Solvatochromic behavior and electronic structure of some symmetric 2-aminophenol Schiff base derivatives
Sidir, Yadigar Gülseven; Sidir, İsa; Berber, Halil; Türkoğlu, Gülsen (Elsevier Science BV, 2014)The solvatochromic behavior and electronic structure of four symmetric 2-aininophenol Schiff base derivatives were investigated by using electronic absorption spectra in fourteen different spectroscopic grade solvents. The ... -
Solvatochromism and electronic structure of some symmetric Schiff base derivatives
Sidir, Yadigar Gülseven; Sidir, İsa; Berber, Halil; Türkoğlu, Gülsen (Elsevier Science BV, 2015)In this present work, we have investigated electronic absorption spectra of three symmetric Schiff bases in fourteen spectroscopic grade solvents which have different polarities. The electronic transitions have been evaluated ... -
Specific and non-specific interaction effect on the solvatochromism of some symmetric (2-hydroxybenzilydeamino)phenoxy Schiff base derivatives
Sidir, İsa; Sidir, Yadigar Gülseven; Berber, Halil; Türkoğlu, Gülsen (Elsevier Science BV, 2016)In this present work, solvatochromic behavior, specific and non-specific solute-solvent interactions and electronic structure of (2-hydroxybenzilydeamino)phenoxy Schiff base derivatives have been investigated by using ... -
Spectrophotometric determination of the acidity dissociation constants of symmetric Schiff base derivatives
Türkoğlu, Gülsen; Berber, Halil; Yaman, Özkütük, M. (Gazi University Eti Mahallesi, 2014)In this study, the acidity constants of series symmetric Schiff base derivatives have been determined using the UV-visible spectrophotometric method at a temperature of 25(±0.1) °C. The deprotonated acidity constants (pKa) ... -
Synthesis, characterization, tautomerism and theoretical study of some new Schiff base derivatives
Türkoğlu, Gülsen; Berber, Halil; Dal, Hakan; Öğretir, Cemil (Pergamon-Elsevier Science LTD, 2011)New Schiff base derivatives were prepared by the condensation of 5-chloro and 5-bromo salicylaldehyde with bis(o-aminophenol)ethers. Five bis(o-nitrophenol)ether compounds were synthesized using some ditosylate, ... -
Synthesis, crystal structure, optical and electrochemical properties of novel diphenylether-based formazan derivatives
Türkoğlu, Gülsen; Berber, Halil; Kani, İbrahim (Royal Soc Chemistry, 2015)In this study, formazans 5a-5h were synthesized by coupling the reactions of substituted phenylhydrazone compounds 3a-3h with diazonium salt of 4-chloro-2-phenoxybenzenamine (4). The substituted phenylhydrazones 3a-3h were ...
