The synthesis and characterisation of planar oligophenol with Schiff base substitute

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dc.authoridKaya, İsmet / 0000-0002-9813-2962
dc.contributor.authorKaya, İsmet
dc.contributor.authorDemir, Hacı Ökkeş
dc.contributor.authorVilayetoğlu, Adalet R.
dc.date.accessioned2025-01-27T21:13:15Z
dc.date.available2025-01-27T21:13:15Z
dc.date.issued2002
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractIn this study, the oxidative polycondensation reaction conditions of 2-p-tolylazomethinephenol (TAP) with air oxygen and sodium-hypochloride (NaOCl) were studied in an aqueous alkaline medium between 50 and 90 C. The structure and properties of the products were studied by chemical and spectra analyses. TAP was converted to ditrimers (15-67%) by oxidised in an aqueous alkaline medium. The number average molecular weight (M), mass average molecular weight (M-w,) and polydispersity index (PDI) values were found to be 6780, 7660 and 1.13, respectively. A part of the azomethine (-CH=N-) group oxidised to carboxylic group (-COOH) during the polycondensation reaction. Thus, reaction product which is oligo-2-p-tolylazomethinephenol (OTAP), involves tolylazomethine and carboxylic (-COOH) (0.5-20%) groups. Besides, oligomer-metal complexes of OTAP with Cu(II), Zn(II), CO(H) and Pb(II) were synthesised and the structure and properties were studied. Antimicrobial activities of the oligomer and its oligomer-metal complexes have been tested against L. monocytogenez, Bacillus brevis, P. vulgaris, E. coli, B. megaterium, M. luteus, B. cereus, K. pneumoniae, M. smegmatis, S. thermophilus, S. aureus, E. aeroginosa and Torulopsis holmii. Also, DTA and TG analyses were shown to be stable for OTAP and its oligomer-metal complexes against thennooxidative decomposition. Published by Elsevier Science B.V.
dc.identifier.doi10.1016/S0379-6779(01)00501-X
dc.identifier.endpage191
dc.identifier.issn0379-6779
dc.identifier.issue2-3
dc.identifier.scopus2-s2.0-0037075005
dc.identifier.scopusqualityQ1
dc.identifier.startpage183
dc.identifier.urihttps://doi.org/10.1016/S0379-6779(01)00501-X
dc.identifier.urihttps://hdl.handle.net/20.500.12428/28353
dc.identifier.volume126
dc.identifier.wosWOS:000174240600009
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.language.isoen
dc.publisherElsevier Science Sa
dc.relation.ispartofSynthetic Metals
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectthe oxidative polycondensation
dc.subjectoligo-2-p-tolylazomethinephenol
dc.subjectair oxygen
dc.subjectNaOCl
dc.subjectoligomer-metal complexes
dc.subjectthermal analyses and antimicrobial activities
dc.titleThe synthesis and characterisation of planar oligophenol with Schiff base substitute
dc.typeArticle

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