Synthesis and characterization of ether bridged polymers and their fluorescent, thermal, conductivity, optical and electrochemical properties

Kaya, İsmet; Temizkan, Kevser; Aydın, Aysel

doi:10.1016/j.jelechem.2013.09.021

Cited by 13 publications

(6 citation statements)

References 25 publications

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“…Figure 4 shows the emission spectra of OAN in different solvents. According to the obtained results emission behavior of the OAN is affected by polarity as well as protic-aprotic nature of solvent as previously indicated in the literature [45]. In THF, OAN exhibits an emission maximum at 405 nm, whereas in DMF solution, it shows an emission peak at 415 nm.…”

Section: Resultssupporting

confidence: 83%

Chemical oxidative polymerization, optical, electrochemical and kinetic studies of 8-amino-2-naphthol

et al. 2015

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Here the polymerization of 8-amino-2-naphthol (AN) is reported without use of an additional external template, surfactants or functional dopants. For this, NaOCl and hydrochloride acid solution (1.0 M) were used as oxidant and reaction medium, respectively. The structure of oligomer was elucidated by FT-IR, UV-vis and 1 H-NMR techniques. The number average molecular weight of oligomer was found to be 2200Da with a polydispersity index of 1.4 by size exclusion chromatography. This oligomer exhibited a multicolor emission behavior as it was excited at different wavelenghts. Redox states were clarified by cyclic voltammetry (CV) technique and the relationship between anodic/cathodic peak currents vs. scan rates was determined. Thermal analysis and XRD data assigned that the resulting oligomer was in a semi-crystalline form. The activation energy related to the solid state decomposition was calculated from differential and integral non-isothermal methods and the lowest value using Kissinger procedures was determined to be 79.53 kJ/mol in N 2 atmosphere.

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Section: Resultssupporting

confidence: 83%

Chemical oxidative polymerization, optical, electrochemical and kinetic studies of 8-amino-2-naphthol

et al. 2015

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“…The chemical structures of monomers and polymers were confirmed by 1 H NMR, 13 C NMR and FT-IR, UV-Vis spectroscopy. According to the thermal analysis results, the onset temperature of P-1 was higher than of the other poly(azomethine-ester)s because the chain length of P-1 was shorter than of the other poly(azomethine-ester)s. The results from thermogravimetric analysis revealed that thermal stability of P-1, P-2, P-3 and P-4 species gradually decreased.…”

Section: Discussionmentioning

confidence: 99%

“…5) showed the occurrence of signals broadening and imine peak of this monomer were observed at 8.47 ppm. The proton decoupled 13 C NMR spectrum of SB-3 (Fig. 5) exhibited the expected peaks for each of the carbon atoms of the Schiff base in which the chemical shift of C=N (imine) appeared at 165.64 ppm and the chemical shift of C-OH was found at 160.88 ppm [17].…”

Section: Spectral Characterization Of the Compoundsmentioning

confidence: 97%

“…Platinum wire was used as a counter electrode. The highest occupied molecular orbital (HOMO) and lowest unoccupied molecular orbital (LUMO) energy levels were calculated from oxidation and reduction onset values [13]. The surface morphologies of the polyesters were determined by a JEOL JSM-7100F Schottky field emission scanning electron microscope.…”

Section: Characterization Techniquesmentioning

confidence: 99%

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Heat resisting and water-soluble chocolate polyesters containing azomethine group

Temizkan

Kaya

2017

Materials Science-Poland

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In this study, soluble in water poly(azomethine-ester)s (PAEs) were synthesized via elimination reactions of aromatic dihydroxy compounds containing imine bonding with terephthaloyl chloride. The structures of Schiff bases (SBs) and PAEs containing different aliphatic chains were confirmed by FT-IR, 1 H-NMR, 13 C-NMR and UV-Vis analyses. Physicochemical properties of the new polymers were characterized. Thermal properties of the compounds were investigated by TGA-DTA, DMA and DSC. According to TGA measurements, the starting degradation temperatures (T on ) of P-1, P-2, P-3, and P-4 poly(azomethine-ester)s were found as 255°C, 232°C, 222°C, and 221°C, respectively. The starting degradation temperatures of the poly(azomethine-ester)s were higher than their Schiff base compounds. According to dynamical mechanical analysis (DMA) measurements, glass transition temperature (T g ) of P-1, P-2, P-3, and P-4 poly(azomethine-ester)s were found as 95°C, 138°C, 140°C, and 145°C, respectively. The morphological and topographic properties of the PAEs containing azomethine linkage in the main chain were investigated by FE-SEM and AFM, respectively. The molecular mass distributions of PAEs were determined by gel permeation chromatography (GPC). Electrochemical (E g ) and optical band gap (E opt g ) values of the prepared SBs and PAEs were calculated from cyclic voltammetry (CV) and UV-Vis analyses. The electrochemical band gap (E g ) values of P-1, P-2, P-3 and P-4 were found as 2.44 eV, 2.41 eV, 2.39 eV and 2.39 eV, respectively, from the cyclic voltammetry.

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“…The most employed strategy to overcome the limited solubility is the modification of the chain itself, like the incorporation of new functionalities such as flexible segments [e.g., -O-, -SO 2 -, -CH 2 -, C(CF 3 ) 2 , and -NHCO-] into the polymer chain. For this aim, various derivatives of PAZs have been reported [6][7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

Fluorescence, thermal and electrochemical properties of poly(azomethine-urethane)s containing sulfone group

2015

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In this study, the new sulfone group-containing poly(azomethine-urethane)s (PAZUs) were synthesized to investigate the effects various diisocyanates on the thermal, fluorescence, electrochemical and morphological properties. The structures of PAZUs have been confirmed by FT-IR, NMR, and SEC analyses. The electrochemical behaviors of the PAZUs were examined by cyclic voltammetry. Optical properties were investigated by UV-Vis and fluorescence measurements. The PAZUs were further characterized by TGA, DSC, SEM, and AFM techniques. TGA analyses results showed considerable increase in the thermal stability of polyurethanes due to the introduction of azomethine bond in the main chain. Consequently, because of the fine thermal properties the obtained materials can be used to produce thermally stable materials.

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Synthesis and characterization of ether bridged polymers and their fluorescent, thermal, conductivity, optical and electrochemical properties

Cited by 13 publications

References 25 publications

Chemical oxidative polymerization, optical, electrochemical and kinetic studies of 8-amino-2-naphthol

Chemical oxidative polymerization, optical, electrochemical and kinetic studies of 8-amino-2-naphthol

Heat resisting and water-soluble chocolate polyesters containing azomethine group

Fluorescence, thermal and electrochemical properties of poly(azomethine-urethane)s containing sulfone group

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