Synthesis, characterization, conductivity, band gap, and kinetic of thermal degradation of poly‐4‐[(2‐mercaptophenyl) imino methyl] phenol

Kaya, İsmet; Baycan, Fatma; Doğan, Fati̇h

doi:10.1002/app.29640

Cited by 12 publications

(4 citation statements)

References 30 publications

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“…Unreacted monomer was separated from the reaction product by washing with CHCl 3 . The mixture was filtered and washed with hot water (3 Â 25 mL) to separate the mineral salts and then dried in the oven at 110 C. 1 …”

Section: Synthesis Of Opnmmpmentioning

confidence: 99%

“…Many studies on oxidative polymerization and the reaction mechanisms of polyphenols have been reported. 1–3 Schiff‐base‐substituted oligomers or polymers, which include azomethine (CHN) and active hydroxyl (OH) groups, have been used in various fields, including electrochemical cells and materials resistant to high energy, because of their useful properties, including paramagnetism and semiconductivity. They have also been used to prepare compounds with resistance to high temperature, thermostabilizatiors, 4 graphite materials, 5 and antistatic materials.…”

Section: Introductionmentioning

confidence: 99%

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A new Schiff base epoxy oligomer resin: Synthesis, characterization, and thermal decomposition kinetics

Kaya

Doğan

Gül

2011

J of Applied Polymer Sci

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Oligo{2,2 0 -{1,4-phenylenebis[nitrilomethylylidene]}bis(6-methoxyphenol)} (OPNMMP) was synthesized from o-vanillin and p-phenylene diamine by oxidative polycondensation with NaOCl in an aqueous alkaline. Then, a new Schiff Base epoxy oligomer resin, OPNMMP-epichlorohydrine (EPC), was produced with EPC. The structures of the resulting compounds were confirmed by Fourier transform infrared spectroscopy, ultraviolet-visible spectroscopy, 1 H-NMR, and 13 C-NMR. Further characterization processes were preformed by thermogravimetry (TG)-differential thermal analysis, gel permeation chromatography, and solubility testing. Also, the kinetics of the thermal decomposition of OPNMMP-EPC were investigated by thermogravimetric analysis. The TG curves showed that the thermal decomposition of OPNMMP-EPC occurred in one stage. The kinetic parameters related to the decomposition kinetics of OPNMMP-EPC were obtained from TG curves with the following methods: Friedman, Flynn-Wall-Ozawa, Kissinger, invariant kinetic parameter, and Coats-Redfern (CR), under an N 2 dynamic atmosphere and different heating rates (5, 10, 15, and 20 C/min). The mechanism function and pre-exponential factor were also determined by a master plots method. The apparent activation energies of the thermal decomposition were calculated from these methods for OPNMMP-EPC. The analysis of the results obtained by the CR and master plots methods showed that the decomposition mechanism of OPNMMP-EPC in N 2 was a deceleration-type mechanism.

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Section: Synthesis Of Opnmmpmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

A new Schiff base epoxy oligomer resin: Synthesis, characterization, and thermal decomposition kinetics

Kaya

Doğan

Gül

2011

J of Applied Polymer Sci

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“…This aspect is highly sought for reducing the number of layers required for functional devices and is not readily achievable with current conjugated materials because of the incompatibility of the highest occupied molecular orbital and lowest unoccupied molecular orbital energy levels with currently used electrodes. There are many studies reporting the synthesis of polyazomethines and their electrical properties before and after doping 3–5. For instance, Kaya et al5 showed that, by I 2 doping, the conductivity of perylene‐containing polyazomethines improved by about five orders of magnitude.…”

Section: Introductionmentioning

confidence: 99%

Solid state properties of thin films of new copoly(azomethine‐sulfone)s

Marin¹,

Ţîmpu²,

Cozan³

et al. 2010

J of Applied Polymer Sci

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A series of four copoly(azomethine-sulfone)s have been synthesized and extensively characterized. The chemical design has been thought to obtain semiconducting properties and thermotropic behavior matching the processing of the materials from the ordered melted state, suitable for the spontaneous alignment of molecules in the active layer on a substrate. Prototypes of thin films based on this series of polymers have been electrically and structurally characterized. It was found that the respective polymers show typical semiconducting properties. The thermal properties with particular reference to their mesomorphic state were checked by using differential scanning calorimetry, polarized light microscopy, and thermogravimetric analysis techniques. Morphological characterization was realized by atomic force microscopy and X-ray diffraction measurements. Some correlations between electrical properties and packing closeness were established.

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“…The decomposition kinetic parameters of Co(II), Ni(II) and Cu(II) complex with benzylamino-p-chlorophenylglyoxime ligand were studied by Arslan. 8 Also, Doğan et al [9][10][11][12] and the others 13,14 have investigated the thermal behavior, kinetic and thermodynamic parameters of various metal complexes and polymeric materials using TG/DTG and DTA.…”

Section: Introductionmentioning

confidence: 99%

Thermal Decomposition Kinetics of Some Metal Complexes of 2,3‐Hydroxyimino‐4‐phenyl‐6‐phenyazo‐1‐thia‐4,5‐diaza‐cyclohexa‐5‐diene

Doğan¹,

Mercimek

Kaya

2010

Chin. J. Chem.

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The Ni(II), Cu(II) Co(II) and Zn(II) complexes of 2,3-hydroxyimino-4-phenyl-6-phenyazo-1-thia-4,5-diazacyclohexa-5-diene (H 2 L) were synthesized. Thermal behavior of these complexes was studied in dynamic nitrogen atmosphere by TA (thermogravimetric analysis), DTA (differential thermal analysis) and DTG (differential thermal gravimetry) techniques. The reaction order, the activation energies, the entropies, the enthalpies, the free energies, and the pre-exponential factors of the thermal decomposition reactions were calculated from the thermogravimetric curves. The kinetic analysis of the thermogravimetric data was performed by using several methods such as MacCallum-Tanner (MT), van Krevelen (vK), Madhusudanan-Krishnan-Ninan (MKN), Wanjun-Yuwen-Hen-Cunxin (WYHC), Horowitz-Metzger (HM) and Coats-Redfern method (CR) based on the single heating rate. Most appropriate methods were determined for each decomposition step according to the least-square linear regression. The Ni(II), Cu(II) Co(II) and Zn(II) complexes displayed one-or two-stage decomposition pattern when heating in a dynamic nitrogen atmosphere and metal oxides remained as end products of the complexes. The characterization of the end products of the decomposition was performed by X-ray diffraction.

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Synthesis, characterization, conductivity, band gap, and kinetic of thermal degradation of poly‐4‐[(2‐mercaptophenyl) imino methyl] phenol

Cited by 12 publications

References 30 publications

A new Schiff base epoxy oligomer resin: Synthesis, characterization, and thermal decomposition kinetics

A new Schiff base epoxy oligomer resin: Synthesis, characterization, and thermal decomposition kinetics

Solid state properties of thin films of new copoly(azomethine‐sulfone)s

Thermal Decomposition Kinetics of Some Metal Complexes of 2,3‐Hydroxyimino‐4‐phenyl‐6‐phenyazo‐1‐thia‐4,5‐diaza‐cyclohexa‐5‐diene

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