Synthesis, spectroscopic thermal and biological activity studies on azo-containing Schiff base dye and its Cobalt(II), Chromium(III) and Strontium(II) complexes

Alghool, Samir; El‐Halim, Hanan F. Abd; Dahshan, A.

doi:10.1016/j.molstruc.2010.08.025

Cited by 50 publications

(18 citation statements)

References 26 publications

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“…The ability of carboxylic group on coordination was approved via asymmetric vibrations band m as (OCO) at 1570-1530 cm -1 and bands of symmetric vibrations m s (OCO) at 1390-1340 cm -1 . The bands of symmetric vibrations m s (OCO) were shifted in PANAA-Ni composites (Z 1 , Z 2 , Z 3 , and Z 4 ) to lower wavenumber [45].…”

Section: Ft-ir Spectral Studiesmentioning

confidence: 97%

Effect of Doping with Nickel Ions on the Electrical Properties of Poly(aniline-co-o-anthranilic acid) and Doped Copolymer as Precursor of NiO Nanoparticles

Zoromba

El-Ghamaz

Alghool

2015

J Inorg Organomet Polym

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Poly(aniline-co-o-anthranilic acid) (PANAA) and its nickel composite (PANAA-Ni) are successfully prepared based on oxidative chemical polymerization via two comparative in situ and ex situ polymerization methods. PANAA copolymer contains aniline, and o-anthranilic acid moieties, were doped with different concentrations of nickel ions. The ratios of aniline, o-anthranilic acid, and nickel chloride were (1:1:0.5) and (1:1:1), respectively. The effect of nickel moiety on the properties of polyconjugated polymers, and their spectral characteristics (UVVis absorption spectra, FTIR, thermal stability) were recorded. TGA analysis confirmed that the poly(aniline-coo-anthranilic acid)/nickel (PANAA-Ni) composites, which were prepared by in situ or ex situ polymerization method, are more thermally stable than the pure PANAA copolymer. The XRD revealed that the pure and PANAA-Ni (prepared by ex situ polymerization method) is completely amorphous structure, while the PANAA-Ni composite (prepared by in situ polymerization method) is a mixture of crystalline and amorphous phases. The temperature dependence of dielectric constants (e r and e i ) as well as AC conductivity (r ac ) were investigated in the temperature range of 300-383 K and test frequency range of 0.1-100 kHz. All the tested samples showed semiconductor behavior. The values of thermal activation energies DE1 and DE2 for PANAA copolymer are calculated, and found to be in the range of 0.03-0.1 eV and 0.58-1.88 eV, respectively. We calculated DE1 and DE2 for PANAA-Ni composite, and we found their values in the range of 0.14-0.27 eV and 0.41-0.58 eV, respectively. Moreover, Nanocrystalline nickel oxide NiO powder was prepared by thermal decomposition route of (PANAA-Ni) composites, which was prepared by in situ polymerization method. The size of the obtained nickel oxide nanoparticle was determined by transmission electron microscope .

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Section: Ft-ir Spectral Studiesmentioning

confidence: 97%

Effect of Doping with Nickel Ions on the Electrical Properties of Poly(aniline-co-o-anthranilic acid) and Doped Copolymer as Precursor of NiO Nanoparticles

Zoromba

El-Ghamaz

Alghool

2015

J Inorg Organomet Polym

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“…Binuclear metal complexes have characteristic redox behavior, magnetic exchange interactions and spectroscopic properties, they have been found to be better catalysts than the mononuclear Schiff base complexes. Therefore this type of complexes still continues to play a very important role in understanding of various aspects of coordination chemistry of metals [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Spectral characterization, optical band gap calculations and DNA binding of some binuclear Schiff-base metal complexes derived from 2-amino-ethanoic acid and acetylacetone

Hussien

Nawar

Radwan

et al. 2015

Journal of Molecular Structure

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“…All the compounds were inoculated using a loop onto plates containing Nutrient Agar (NA) media and incubated at 32 o C for 24 hours. To carry out agar diffusion assay the bacterial suspensions were prepared in sterile distilled water [25][26][27]. The antibacterial activities of metal complexes against Staphylococcus aureus and Bacillus subtilis are shown in Table 3.…”

Section: Antibacterial Activitymentioning

confidence: 99%

Synthesis, Characterization, Antimicrobial Activity, Antifungal Activity and DNA Cleavage Studies of Transition Metal Complexes with Schiff Base Ligand

R¹

2015

IJIRSET

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Transition metal complexes of Cu(II), Co(II), Ni(II) and Zn(II) have been synthesized with the Schiff base ligand prepared by the condensation reaction between isooxazol-3-yl amine and salicylaldehyde. Elemental analysis of these complexes suggest that these metal ions forms complexes of type ML 2 (H 2 O) 2 stoichiometry for Cu(II), Co(II), Ni(II) and Zn(II). The ligand behaves as bidentate and forms coordinate bonds through O and N atoms. Magnetic susceptibility, IR, UV -Visible, Mass and ESR spectral studies suggest that Cu(II), Co(II), Ni(II) and Zn(II) complexes posses octahedral geometry. The complexes were tested for their antimicrobial activity against the bacterial strains Staphylococcus aureus and Bacillus subtilis. The Schiff base metal complexes evaluated for their antifungal activity against the fungi Aspergillus niger and Cladosporium oxysporum. The DNA cleavage studies of Schiff base complexes were studied by agarose gel electrophoresis method using Calf -Thymus DNA.

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Synthesis, spectroscopic thermal and biological activity studies on azo-containing Schiff base dye and its Cobalt(II), Chromium(III) and Strontium(II) complexes

Cited by 50 publications

References 26 publications

Effect of Doping with Nickel Ions on the Electrical Properties of Poly(aniline-co-o-anthranilic acid) and Doped Copolymer as Precursor of NiO Nanoparticles

Effect of Doping with Nickel Ions on the Electrical Properties of Poly(aniline-co-o-anthranilic acid) and Doped Copolymer as Precursor of NiO Nanoparticles

Spectral characterization, optical band gap calculations and DNA binding of some binuclear Schiff-base metal complexes derived from 2-amino-ethanoic acid and acetylacetone

Synthesis, Characterization, Antimicrobial Activity, Antifungal Activity and DNA Cleavage Studies of Transition Metal Complexes with Schiff Base Ligand

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