Synthesis, characterization, thermal degradation and electrical conductivity of oligo[2-(Thien-2-YL-methylene)aminophenol] and oligomer-metal complexes

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dc.authoridKaya, İsmet / 0000-0002-9813-2962
dc.contributor.authorKaya, İsmet
dc.contributor.authorAydn, Aysel
dc.date.accessioned2025-01-27T18:56:09Z
dc.date.available2025-01-27T18:56:09Z
dc.date.issued2009
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractThe optimum reaction conditions of the oxidative polycondensation of 2-(thien-2-yl-methylene)aminophenol (2-TMAP) has been accomplished by using air O2, H2O2 and NaOCl oxidants in an aqueous alkaline medium between 20°C and 90°C. The structures of the monomer and oligomer were confirmed by FT-IR, UV-Vis, 1H-NMR and 13C-NMR and elemental analysis. TGA-DTA, size exclusion chromatography (SEC) techniques and solubility tests were applied for characterization. The 1H-NMR and 13C-NMR data show that the polymerization proceeded with CC and COC coupling system from ortho and para positions and oxyphenylene. The number-average molecular weight (M n), weight-average molecular weight (Mw) and polydispersity index (PDI) values of oligo[2-(thien-2-yl-methylene)aminophenol] (O-2-TMAP) were determined with SEC measurements. Thermal analyses of oligomer-metal complex compounds of O-2-TMAP with Cd+2, Co +2, Cu+2, Zn+2, Fe+2, Zr +4, Ni+2 and Pb+2 ions were investigated in N2 atmosphere in the temperature range of 15-1000°C. The highest occupied molecular orbital and the lowest unoccupied molecular orbital of monomer and oligomer were determined from the onset potentials for n-doping and p-doping, respectively. Optical band gaps (Eg) of 2-TMAP and O-2-TMAP and oligomer-metal complex compounds determined according to UV-Vis measurements. Also, electrical conductivities of O-2-TMAP and its metal complexes measured with four-point probe technique. © 2009 World Scientific Publishing Company.
dc.identifier.doi10.1142/S0256767909004138
dc.identifier.endpage477
dc.identifier.issn0256-7679
dc.identifier.issue4
dc.identifier.scopus2-s2.0-68249097817
dc.identifier.scopusqualityQ1
dc.identifier.startpage465
dc.identifier.urihttps://doi.org/10.1142/S0256767909004138
dc.identifier.urihttps://hdl.handle.net/20.500.12428/12877
dc.identifier.volume27
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherWorld Scientific Pub
dc.relation.ispartofChinese Journal of Polymer Science (English Edition)
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanı
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_Scopus_20250125
dc.subjectAir O<sub>2</sub>; Electrical conductivity; NaOCl; Oligo[2-(thien-2-yl-methylene)aminophe nol]; Oligomer-metal complex compounds; Oxidative polycondensation; Thermal analysis
dc.titleSynthesis, characterization, thermal degradation and electrical conductivity of oligo[2-(Thien-2-YL-methylene)aminophenol] and oligomer-metal complexes
dc.typeArticle

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