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SYNTHESIS,CHARACTERIZATION,THERMAL DEGRADATION AND ELECTROCHEMICAL PROPERTIES OF OLIGO-4-m-TOLYLAZOMETHINEPHENOL

Chinese Journal of Polymer Science 2006年第6期24卷 647-656页

作者： smet Kaya Yasin Bayrakli Department of Chemistry Faculty of Sciences and Artsanakkale Onsekiz Mart UniversityTR-17020 anakkaleTurkey

The oxidative polycondensation reaction conditions of 4-m-tolylazomethinephenol （4-TAMP） in the presence of air O2 and NaOCl as oxidants were studied in an aqueous alkaline medium between 50 and 90℃. The structures of the obtained monomer and oligomer were confirmed by FT-IR, UV-Vis, ^1H- and ^13C-NMR and elemental analysis techniques. The physical characterization was made by TG-DTA, size exclusion chromatography （SEC） and solubility tests. At the optimum reaction conditions, the yield of oligo-4-m-tolylazomethinephenol （O-4-TAMP） was found to be 62.50% （for air O2 oxidant） and 90.0% （for NaOCl oxidant）, respectively. According to the SEC analysis, the number-average molecular weight （Mn）, weight-average molecular weight （Mw） and polydispersity index （PDI） values of O-4-TAMP were found to be 2310, 2610 g tool 1 and 1. 13, respectively, using air O2, and 1390, 1710 g mol^-1 and 1.23, using NaOCl, respectively. According to TG-DTA analyses, O-4-TAMP was more stable than 4-TAMP against thermal decomposition. The weight losses of 4-TAMP and O-4-TAMP were found to be 68% and 58% at 1000℃. Electrical conductivity of the O-4-TAMP was measured, showing that the polymer is a typical semiconductor. Electrochemically, the highest occupied molecular orbital （HOMO）, the lowest unoccupied molecular orbital （LUMO） and electrochemical energy gaps （E＇g） for 4-TAMP are -5.96, -3.22 and 2.74 eV, respectively. The HOMO, LUMO and （E＇g） for O-4-TAMP are -5.78, -3.44 and 2.34 eV, respectively. According to UV-Vis measurements, optical band gaps （Eg） of 4-TAMP and O-4-TAMP were found to be 3.45 and 3. 1 0 eV, respectively.

关键词： Air O2 NaOCl Oligo-4-m-tolylazomethinephenol oxidative polycondensation Thermal analysis Band gap Conductivity

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SYNTHESIS,CHARACTERIZATION,THERMAL DEGRADATION AND ELECTRICAL CONDUCTIVITY OF OLIGO[2-(2-HYDROXYPHENYLIMINOMETHYLBENZYLIDENE)AMINOPHENOL]AND OLIGOMER-METAL COMPLEXES

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Chinese Journal of Polymer Science 2008年第2期26卷 131-143页

作者： Ismet Kaya Süleyman Çulhaoglu Department of Chemistry Faculty of Science and Arts Çanakkale Onsekiz Mart University TR 17020 Çanakkale Turkey

The oxidative polycondensation reaction conditions of 2-[(2-hydroxyphenyliminomethylbenzylidene)amino- phenol](2-HPIMBAP)has been accomplished by using air O_2 and NaOCl oxidants in an aqueous alkaline medium between 50-90℃.The optimum reaction conditions of the oxidative polycondensation and the main parameters of the process were *** the optimum reaction conditions,yield of the products were found to be 67.72% and 61.49% for air O_2 and NaOCl oxidants *** structures of the monomer ...

关键词： Air oxygen NaOCl Oligo[2-(2-hydroxyphenyliminomethylbenzylidene)aminophenol] oxidative polycondensation Themal analysis Electrical conductivity Antibacterial activities.

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SYNTHESIS,CHARACTERIZATION AND ANTIMICROBIAL PROPERTIES OF 4-[(4-HYDROXYBENZYLIDENE)AMINO]PHENOL AND ITS POLYMER

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Chinese Journal of Polymer Science 2007年第5期25卷 461-472页

作者： Ismet Kaya Suleyman Culhaoglu Dilek Senol Department of Chemistry Faculty of Science and Arts Canakkale Onsekiz Mart University TR-17020 Canakkale Turkey

The oxidative polycondensation reaction conditions of 4-[（4-hydroxybenzylidene） amino] phenol （4-HBAP） were studied with H2O2, air oxygen and NaOCl in an aqueous alkaline medium between 50 and 90℃. The structures of the obtained monomer and polymer were confirmed by FT-IR, UV-Vis, 1H- and 13C-NMR and elemental analysis. The characterization was made by TG-DTA, size exclusion chromatography （SEC） and solubility tests. At the optimum reaction conditions, the yield of poly[4-（4-hydroxybenzylidene amino） phenol] （P-4-HBAP） was found to be 48.3% （for H2O2 oxidant）, 80.5% （for air O2 oxidant） and 86.4% （for NaOCl oxidant）. According to the SEC analysis, the number-average molecular weight （Mn）, weight-average molecular weight （Mw） and polydispersity index （PDI） values of P-4-HBAP was found to be 8950, 10970 g tool^-1 and 1.225, respectively, using H202; and l l610, 15190 g tool^-1 and 1.308 respectively, using air 02 and 7900, 9610 g mol^-1 and 1.216, respectively, using NaOC1. According to TG-DTA analyses, P-4-HBAP was more stable than 4-HBAP against thermal decomposition. The weight loss of P-4-HBAP was found to be 49.27% at 1000℃. The highest occupied molecular orbital （HOMO） and the lowest unoccupied molecular orbital （LUMO） values calculated from electrochemical measurement. Electrochemical energy gaps （Eg＇） of 4-HBAP and P-4-HBAP were found to be -5.46, -5.28; -2.26, -2.67; 3.20 and 2.61 eV, respectively. According to UV-Vis measurements, optical band gap （Eg） of 4-HBAP and P-4-HBAP were found to be 3.34 and 3.01 eV, respectively. Also, antimicrobial activities of 4-HBAP and P-4-HBAP were examined against selected some bacteria. The electrical conductivity of the polymer was measured after doping with iodine.

关键词： Air oxygen H2O2 NaOCl Poly[4-(4-hydroxybenzylidene amino) phenol] oxidative polycondensation Thermal analysis Conductivity Antimicrobial and bad gap.

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SYNTHESIS,CHARACTERIZATION,THERMAL DEGRADATION AND ELECTRICAL CONDUCTIVITY OF OLIGO[2-(THIEN-2-YLMETHYLENE)AMINOPHENOL]AND OLIGOMER-METAL COMPLEXES

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Chinese Journal of Polymer Science 2009年第4期27卷 465-477页

作者： smet Kaya Aysel Aydin Department of Chemistry Faculty of Science and ArtsCanakkale Onsekiz Mart UniversityTR-17020CanakkaleTurkey

The optimum reaction conditions of the oxidative polycondensation of 2-(thien-2-yl-methylene)aminophenol (2-TMAP) has been accomplished by using air O_2,H_2O_2 and NaOCl oxidants in an aqueous alkaline medium between 20℃and 90℃.The structures of the monomer and oligomer were confirmed by FT-IR,UV-Vis,~1H-NMR and ^(13)C-NMR and elemental ***-DTA,size exclusion chromatography(SEC) techniques and solubility tests were applied for *** ~1H-NMR and ^(13)C-NMR data show that the polymeriz...

关键词： Air O_2 NaOCl O1igo[2-(thien-2-yl-methylene)aminophenol] oxidative polycondensation Thermal analysis Electrical conductivity Oligomer-metal complex compounds

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SYNTHESIS,CHARACTERIZATION,THERMAL ANALYSIS,CONDUCTIVITY AND BAND GAPS OF OLIGO {4-[(2-HYDROXYL-1-NAPHTHYL)METHYLENE]AMINOBENZOIC ACID}

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Chinese Journal of Polymer Science 2009年第2期27卷 209-219页

作者： Ismet Kaya Ali Bilici Department of Chemistry Faculty of Science and Artsanakkale Onsekiz Mart UniversityTR-17020anakkaleTurkey Department of Chemistry Faculty of ScienceAnkara UniversityTandoganAnkaraTurkey

The oxidative polycondensation reaction conditions of 4-[(2-hydroxyl-1-naphthyl)methylene]aminobenzoic acid (4-HNMABA) with H2O2,air O2and NaOCl were studied in an aqueous alkaline medium between 40℃and 90℃.The structure of oligo {4-[(2-hydroxyl-1-naphthyl)methylene]aminobenzoic acid} (O-4-HNMABA) was characterized by using1H-NMR,13C-NMR,FT-IR,UV-Vis,size exclusion chromatography (SEC) and elemental analysis *** the optimum reaction conditions,the yield of O-4-HNMABA was found to be 70% for H2O2oxidant,94% for air O2oxidant and 87% for NaOCl *** to the SEC analysis,the number-average molecular weight (Mn),weight-average molecular weight (Mw) and polydispersity index (PDI) values of O-4-HNMABA were found to be 850,1350 and 1.59,using H2O2,1800,2200 and 1.22,using air O2and 2200,3000 and 1.36,using NaOCl,***-DTA analyses showed that O-4-HNMABA was more stable than *** highest occupied molecular orbital,the lowest unoccupied molecular orbital and electrochemical energy gaps (E′g) of 4-HNMABA and O-4-HNMABA were found to be -6.34,-6.56; -2.67,-3.04;3.67 and 3.52 eV,respectively,by cyclic voltammetry (CV).According to UV-Vis measurements,optical band gaps (Eg) of 4-HNMABA and O-4-HNMABA were found to be 3.12 and 3.03 eV,respectively.

关键词： Oligo {4-[(2-hydroxyi-1-naphthyl)methylene]aminobenzoic acid} oxidative polycondensation Conductivity Electrochemical and optical band gaps.

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