Synthesis, characterization, electrochemical and surface morphology properties of poly(azomethine-ester)s

Temizkan, Kevser; Kaya, İsmet

doi:10.1007/s00289-016-1851-8

Cited by 7 publications

(6 citation statements)

References 33 publications

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“…Root mean square roughness values (S q ) for the mentioned (PAZ-E)s are 174, 132, 194, 280, 182 and 167 nm. As for the AFM views of the (PAZ-E)s, the surfaces of (PAZ-E)s seem to be scattered and non-homogeneous owing to their relatively aspheric shapes [37]. Ortho-(PAZ-E)s (P-9 and P-10) had similar surface morphologies like meta (P-11 and P-12) and para (P-13 and P-14) (PAZ-E)s. SEM techniques were used to interpret the surface morphology of the (PAZ-E)s. Figure 11 shows the SEM images of P-10, P-12, P-13 and P-14 polyester.…”

Section: Topographic and Morphological Propertiesmentioning

confidence: 95%

Synthesis, characterization, optical and electrochemical band gaps of green poly(azomethine-ester)s containing oxalyl and succinyl units

Temizkan

Kaya

2019

Bull Mater Sci

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A new series of poly(azomethine-ester)s (PAZ-E)s with different (turning ortho, meta and para) positions were synthesized by condensation polymerization. The chemical structure of polymers was verified by 1 H-NMR, 13 C-NMR, FTIR and UV-Vis measurements. Electrochemical characteristics of the corresponding polymers were obtained with cyclic voltammetric (CV) analysis. Thermal characteristics of the obtained polymers were analysed by TG-DTA, DMA and DSC measurements. The first degradation temperature values of PAZ-E compounds were found between 198 and 250 • C from TGA measurements. Photophysical characteristics of the obtained polymers were explained with photoluminescence (PL) spectroscopy. Molecular weight distributions of (PAZ-E)s were obtained by gel permeation chromatographic (GPC) analysis. Two-and three-dimensional (2D and 3D) properties and images of the synthesized (PAZ-E)s were analysed by SEM and AFM surface analysis techniques, respectively. Electrochemical band gap (E g) values of (PAZ-E)s P-9, P-10, P-11, P-12, P-13 and P-14 were calculated as 2.58, 2.14, 1.90, 2.06, 1.89 and 1.69 eV, respectively. The E g values of the (PAZ-E)s were found to be quite low.

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Section: Topographic and Morphological Propertiesmentioning

confidence: 95%

Synthesis, characterization, optical and electrochemical band gaps of green poly(azomethine-ester)s containing oxalyl and succinyl units

Temizkan

Kaya

2019

Bull Mater Sci

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“…The oligomeric natures of the samples were established, in which chains containing 3 to 5 repetitive units are shown . Poly (azomethine ether)s were also synthesized by elimination reactions of aromatic dihydroxy compounds containing imines that bind to terephthaloyl chloride (Scheme ) …”

Section: Polycondensationmentioning

confidence: 99%

“…[107] Poly (azomethine ether)s were also synthesized by elimination reactions of aromatic dihydroxy compounds containing imines that bind to terephthaloyl chloride (Scheme 16). [108] In another interesting example, the CPL synthesis procedure involved three steps: the first stage -dialdehyde monomer, the second stage -poly(azomethine), and poly (azomethine-quinoline) polymers of the third stage were obtained with the elimination and condensation reactions (Scheme 17). [109] Direct polymerization of bis(5-hydroxy-1,3-phenylene)-32crown-10, a diphenolic macrocyclic monomer, with diacid monomer bis(5-carboxy-1,3-phenylene)-26-crown-8 and more a large analog of bis(5-carboxy-1,3-phenylene)-32-crown-10 was performed according to the Higashi method (Scheme 18).…”

Section: Polycondensationmentioning

confidence: 99%

Synthetic Methodologies for Chelating Polymer Ligands: Recent Advances and Future Development

Джардималиева

Uflyand

2018

ChemistrySelect

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This review summarizes recent progress in synthetic methodologies of chelating polymer ligands such as linear, branched, cross‐linked, grafted polymers, polymer films, liquid crystal polymers, dendrimers, star‐shaped and hyperbranched polymers. The features of methods for producing chelating polymer ligands are considered in detail: free‐radical (co)polymerization, living/controlled radical, metathesis, grafted, chemical oxidized, microwave‐assisted and asymmetric polymerization, electropolymerization, cyclopolymerization, polycondensation, post‐polymerization modification, click chemistry methods and “green” synthesis. The main directions of the development of synthetic chemistry of chelating polymeric ligands are analyzed. The bibliography includes works published in the last five years.

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“…Polyesters are renowned class of polymers due to their extensive range of applications which include coatings, fibers, films and packaging materials. These applications are based on the unique properties of polyesters which in turn depend on their structures; therefore, many researchers are attracted to study the effect of structural variation on the properties of polyesters [1]. The polymers containing azomethine (CH=N) units have many attracting properties such as thermal stability [2,3], fluorescence [4][5][6], antimicrobial activities [7,8] and their use as adsorbent for the removal of heavy metal ions from water systems [8,9].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of new thermally stable, antimicrobial and red-light-emitting poly(azomethine-ester)s

et al. 2020

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Two new diphenol Schiff base monomers were prepared through condensation reaction between 4-hydroxybenzaldehyde and 4,4′-diaminodiphenyl sulfone (dapsone) or 1,2-cyclohexanediamine. The resulting Schiff bases were reacted with terephthaloyl dichloride through polycondensation and formed two novel poly(azomethine-ester) s. The molecular masses of diphenol Schiff bases were determined through E.I mass spectroscopy. The elemental composition of poly(azomethine-ester)s was evaluated through CHN analysis. The structures of diphenol Schiff bases and poly(azomethineester)s were confirmed though FT-IR, 1 HNMR, UV-Vis spectroscopy, fluorescence, SEM and thermal analysis (TG/DTA). All the synthesized compounds were fluorescent and indicated 2-4 emission bands with maximum emission intensities within 342-682 nm at different excitation wavelengths. The diphenol Schiff bases showed violet-light emission, while their derived polyesters showed red-light emission. The poly(azomethine-ester)s indicated good thermal stability (347 °C and 561 °C) which was estimated through T max (temperature at which rate of weight loss is maximum) value obtained from DTG (derivative thermogravimetry) graph. The synthesized compounds were also tested for their antimicrobial activities against different species of bacteria and fungi. The Schiff base having dapsone moiety showed 55% inhibition, while its derived poly(azomethine-ester) showed 40% inhibition against bacterial species Shigella flexneri.

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Synthesis, characterization, electrochemical and surface morphology properties of poly(azomethine-ester)s

Cited by 7 publications

References 33 publications

Synthesis, characterization, optical and electrochemical band gaps of green poly(azomethine-ester)s containing oxalyl and succinyl units

Synthesis, characterization, optical and electrochemical band gaps of green poly(azomethine-ester)s containing oxalyl and succinyl units

Synthetic Methodologies for Chelating Polymer Ligands: Recent Advances and Future Development

Synthesis and characterization of new thermally stable, antimicrobial and red-light-emitting poly(azomethine-ester)s

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