Synthesis, characterization and electrical conductivity of polyesters, polyamides and doped polymers

Bhatt, Vasishta; Ray, Avik

doi:10.1016/s0379-6779(98)80100-8

Cited by 14 publications

(6 citation statements)

References 17 publications

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“…at 1660 and 1655 cm −1 , respectively, for υ C=O of ester group and strong intensity band at 1557 and 1569 cm −1 , respectively, for υ C=C of aromatic rings. Similar assignments are reported for related Schiff bases and polyesters[10,29,31,32]. 1 HNMR spectroscopyThe 1 HNMR spectrum of diphenol Schiff base DIP indicated proton signal of OH group at δ ppm 10.568, azomethine (CH=N) proton signal at 9.781 ppm and range of CH aromatic protons signals within 5.963-7.751 ppm (Fig.S6).…”

supporting

confidence: 75%

“…Two new Schiff bases 4,4′-diphenylsulfonebis(p-iminomethylphenol) (DIP) and 1,2-cyclohexanebis(p-iminomethylphenol) (CIP) were synthesized through condensation reaction by following a reported general procedure [29] with slight modification. 0.01 mol of diamine (4,4′-diaminodiphenyl sulfone (dapsone) or 1,2-cyclohexanediamine) was dissolved in 100 mL absolute ethanol and then transferred in a 250-mL round-bottom flask.…”

Section: Synthesis Of Diphenol Schiff Basesmentioning

confidence: 99%

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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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confidence: 75%

Section: Synthesis Of Diphenol Schiff Basesmentioning

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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“…In addition, the appearance of new band at 335 cm −1 showing the involvement of M-Cl bond in complex formation, supporting the IR spectral study. Further conclusive evidence of coordination of the Schiff base with the metal ion was shown by the appearance of low frequency new band at 648 cm −1 due to metal-oxygen ] (M-O) vibrations [25,26] and was observed in the spectra of the thus confirming participation of the oxygen atom in the coordination. Further coordination of metal to azomethine nitrogen is confirmed by a new band at 508 cm −1 with the involvement of the imidazole ring nitrogen in the coordination with metal ion [27] due to ] (M-N) .…”

Section: Ir Spectral Studymentioning

confidence: 91%

Synthesis, Characterisation, and Biological Evaluation of Zn(II) Complex with Tridentate (NNO Donor) Schiff Base Ligand

Ahmed¹,

Riaz²,

Ahmed

et al. 2015

International Journal of Inorganic Chemistry

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The present paper deals with the synthesis and characterization of metal complex of tridentate Schiff base ligand derived from the inserted condensation of 2-aminobenzimidazole (1H-benzimidazol-2-amine) with salicylaldehyde (2-hydroxybenzaldehyde) in a 1 : 1 molar ratio. Using this tridentate ligand, complex of Zn(II) with general formula ML has been synthesized. The synthesized complex was characterized by several techniques using molar conductance, elemental analysis, FT-IR, and mass and 1HNMR spectroscopy. The elemental analysis data suggest the stoichiometry to be 1 : 1 [M : L]. The complex is nonelectrolytic in nature as suggested by molar conductance measurements. Infrared spectral data indicate the coordination between the ligand and the central metal ion through deprotonated phenolic oxygen, imidazole nitrogen of benzimidazole ring, and azomethine nitrogen atom. Spectral studies suggest tetrahedral geometry for the complex. The pure compound, synthesized ligand, and metal complex were screened for their antimicrobial activity.

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“…This band is absent in all the metal complexes indicating the involvement of this group in complex formation [23]. Moreover, the shift of the C-O phenolic bands from 1282 cm −1 in ligand to 1282-1312 cm −1 in the spectra of metal complexes supports the coordination of the phenolic oxygen atom to the metal ion [24]. The bands for M-O modes appeared in the range of 580 cm −1 -615 cm −1 in all the complexes [25].…”

Section: Spectral Studies Of Ligand and Its Complexesmentioning

confidence: 96%

Synthesis, Characterization, and Biological Evaluation of Some 3d-Metal Complexes of Schiff Base Derived from Xipamide Drug

Malik¹,

Ghosh²,

Jain³

et al. 2013

International Journal of Inorganic Chemistry

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The present paper deals with the synthesis and characterization of metal complexes of Schiff base derived from xipamide, a diuretic drug. The bidentate ligand is derived from the inserted condensation of 5-aminosulfonyl-4-chloro-N-2,6-dimethyl phenyl-2-hydroxybenzamide (Xipamide) with salicylaldehyde in a 1 : 1 molar ratio. Using this bidentate ligand, complexes of Hg(II), Zn(II), and VO(IV) with general formula ML2 have been synthesized. The synthesized complexes were characterized by several techniques using molar conductance, elemental analysis, magnetic susceptibility, FT-IR spectroscopy, electronic spectra, mass spectra, and particle size analysis. The elemental analysis data suggest the stoichiometry to be 1 : 2 [M : L]. All the complexes are nonelectrolytic in nature as suggested by molar conductance measurements. Infrared spectral data indicate the coordination between the ligand and the central metal ion through deprotonated phenolic oxygen and azomethine nitrogen atoms. Spectral studies suggest tetrahedral geometry for Hg(II), Zn(II) complexes, and square pyramidal geometry for VO(IV) complex. The pure drug, synthesized ligand, and metal complexes were screened for their antifungal activities against Aspergillus niger and Aspergillus flavus. The ligand and its Hg(II) and VO(IV) complexes were screened for their diuretic activity too.

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Synthesis, characterization and electrical conductivity of polyesters, polyamides and doped polymers

Cited by 14 publications

References 17 publications

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

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

Synthesis, Characterisation, and Biological Evaluation of Zn(II) Complex with Tridentate (NNO Donor) Schiff Base Ligand

Synthesis, Characterization, and Biological Evaluation of Some 3d-Metal Complexes of Schiff Base Derived from Xipamide Drug

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