Synthesis and characterization of water‐soluble oligosalicylaldehyde‐sulfanilic acid and its Cu(II), Co(II), Pb(II) complexes

Turaç, Ersen; Sürme, Yavuz; Şahmetlioğlu, Ertuğrul; Varol, Ramazan; Narin, İbrahim; Toppare, Levent

doi:10.1002/app.28650

Cited by 8 publications

(4 citation statements)

References 22 publications

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“…Thermal methods are interesting tools for determination of thermal stability and disintegration energy of polymers. Heating the polymers causes chemical and physical transformations that are accompanied by endothermic or exothermic processes 24, 25. These reactions are determined accurately by thermogravimetric analysis (TGA).…”

Section: Resultsmentioning

confidence: 99%

“…Heating the polymers causes chemical and physical transformations that are accompanied by endothermic or exothermic processes. 24,25 These reactions are determined accurately by thermogravimetric analysis (TGA). In this study, thermogravimetric analysis was performed to understand the thermal stability of the copolymers that contain azomethine group on their backbone which is known to be susceptible to degradation.…”

Section: Thermal Analysis Of Copolymersmentioning

confidence: 99%

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Synthesis and characterization of conducting copolymers of quinoxaline derivatives

Turaç

Şahmetlioğlu

Toppare

et al. 2010

J of Applied Polymer Sci

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Electrochemical copolymerizations of 2,3-di(2-thienyl)quinoxaline (M1), 6-methyl-2,3-di(2-thienyl)-quinoxaline (M2), and 2,3-di(2-thienyl)quinoxaline-6-yl)-(phenyl)methanone (M3) with 3,4-ethylenedioxy thiophene (EDOT) were carried out in CH 3 CN/TBABF 4 (0.1M) solvent-electrolyte couple via potentiodynamic electrolysis. The obtained copolymers were characterized by cyclic voltammetry (CV), Fourier transform-infrared spectroscopy (FTIR), scanning electron microscopy (SEM), and thermogravimetry analyses (TGA). The conductivity measurements of copolymers and PEDOT were performed by the fourprobe technique.

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Section: Resultsmentioning

confidence: 99%

Section: Thermal Analysis Of Copolymersmentioning

confidence: 99%

Synthesis and characterization of conducting copolymers of quinoxaline derivatives

Turaç

Şahmetlioğlu

Toppare

et al. 2010

J of Applied Polymer Sci

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“…Oligomerin aromatik protonları aşağı alana doğru kayarak 7,60 ile 6,90 ppm arasında gözlenmiştir. Oligomerin 1 H-NMR spektrumundaki yayvanlaşma literatürde önceki çalışmalarda da gözlemlenmiş ve polimerizasyonun gerçekleştiğinin bir kanıtı olarak yorumlanmıştır [30].…”

Section: Fhef Ve Oligo(fhef) 1 H-nmr Spektrumlarıunclassified

Enzi̇mati̇k Oksi̇dati̇f Poli̇meri̇zasyon İle Orto-Hi̇drazon-Fonksi̇yonlu Oli̇gofenol Sentezi̇

Turaç¹

2017

Ömer Halisdemir Üniversitesi Mühendislik Bilimleri Dergisi

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Hidrazon fonksiyonlu oligofenol, (E)-2-(1-(2-fenilhidrazon)etil)fenol[FHEF] enzimatik oksidatif polimerizasyon yöntemiyle sentezlenmiştir. Yan zincirinde hidrazon fonksiyonel grubu içeren fenol türevinin enzimatik oksidatif polimerizasyonunda; katalizör olarak Horseradish peroksidaz (HRP) enzimi, yükseltgeyici olarak ise Hidrojen peroksit (H 2 O 2 ) kullanılmıştır. Polimerleşme üzerine reaksiyon sıcaklığı, reaksiyon pH'sı ve çözücü sistemleri gibi değişik parametrelerin etkileri çalışılmıştır. Sentezlenen oligomerin karakterizasyonu nükleer magnetic rezonans ( 1 H ve 13 C NMR), infrared spektroskopisi (FT-IR), jel geçirgenlik kromotoğrafisi (GPC), ultraviyole spektroskopisi (UV-Vis), dönüşümlü voltametri (CV) ve termogravimetrik analiz (TGA/DTA) teknikleri ile yapılmıştır.

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“…The 5% weight loss of the oligomer was observed at 195°C, and carbonaceous residue of the product at 1000°C was detected as 47%. [45,46]…”

Section: Dsc and Tga Thermogramsmentioning

confidence: 99%

Enzymatic oxidative polymerization of para‐imine functionalized phenol catalyzed by horseradish peroxidase

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Turaç

et al. 2015

Polymers for Advanced Techs

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Enzymatic oxidative polymerization of a new para‐imine functionalized phenol derivative, 4‐(4‐hydroxybenzylideneamino)benzoic acid (HBBA), using horseradish peroxidase enzyme and hydrogen peroxide oxidizer has been investigated in an equivolume mixture of an organic solvent (acetone, methanol, ethanol, dimethylformamide, 1,4‐dioxane, and tetrahydrofuran) and phosphate buffer (pH = 5.0, 6.0, 6.8, 7.0, 7.2, 8.0, and 9.0) at different temperatures under air for 24 h. The resulting oligomer, oligo(4‐(4‐hydroxybenzylideneamino)benzoic acid) [oligo(HBBA)], was characterized using ultraviolet–visible, Fourier transform infrared (FT‐IR), 1H nuclear magnetic resonance (NMR), cyclic voltammetry, size exclusion chromatography, differential scanning calorimetry, and thermogravimetric analyses. Polymerization involved carbon dioxide and hydrogen elimination from the monomer, and terminal units of the oligomer structure consisted of phenolic hydroxyl (–OH) groups at the ends. The polymer is mainly composed of a mixture of phenylene and oxyphenylene units according to 1H NMR and FT‐IR analyses. Effects of solvent system, temperature and buffer pH on the polymerization have been investigated in respect to the yield and molecular weight (Mn) of the product. The best condition in terms of the highest molecular weight (Mn = 3000 g/mol, DP ~ 15) was achieved in an equivolume mixture of 1,4‐dioxane/pH 5.0 phosphate buffer condition at 35°C. Electrochemical characterization of oligo(HBBA) was investigated at different scan rates. The resulting oligomer has also shown relatively high thermal stability according to thermogravimetric analysis. Copyright © 2015 John Wiley & Sons, Ltd.

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Synthesis and characterization of water‐soluble oligosalicylaldehyde‐sulfanilic acid and its Cu(II), Co(II), Pb(II) complexes

Cited by 8 publications

References 22 publications

Synthesis and characterization of conducting copolymers of quinoxaline derivatives

Synthesis and characterization of conducting copolymers of quinoxaline derivatives

Enzi̇mati̇k Oksi̇dati̇f Poli̇meri̇zasyon İle Orto-Hi̇drazon-Fonksi̇yonlu Oli̇gofenol Sentezi̇

Enzymatic oxidative polymerization of para‐imine functionalized phenol catalyzed by horseradish peroxidase

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