Biological and thermal investigations of polychelates derived from a novel terpolymer ligand

Azarudeen, Raja S.; Ahamed, Mohamed A. Riswan; Burkanudeen, Abdul R.

doi:10.1007/s10965-010-9536-8

Cited by 22 publications

(18 citation statements)

References 20 publications

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“…1 and the spectral data are presented in Table 2. The terpolymer ligand spectrum showed a broad band at 3460.1 cm -1 is assigned to the hydroxyl group of -COOH present in the aromatic ring which involves intramolecular hydrogen bonding with the -NH of Ar-NH 2 [23,24]. This band seems to be merged with band appeared for -NH stretching vibrations of Ar-NH 2 group and it is further confirmed by the -NH bending vibrations appeared at 1512.1 cm -1 [25].…”

Section: Infrared Spectral Studiesmentioning

confidence: 72%

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Synthesis, Spectral, Morphology, Thermal Degradation Kinetics and Antibacterial Studies of Terpolymer Metal Complexes

Azarudeen¹,

Burkanudeen²

2011

J Inorg Organomet Polym

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Terpolymer metal complexes involving transition metal ions such as Cu(II), Mn(II) and Zn(II) were prepared using a terpolymer ligand derived from anthranilic acid-phenyl hydrazine-formaldehyde (APHF). The terpolymer ligand and its metal complexes were intended to spectral characterizations viz. FTIR, electronic, ESR, 1 H NMR and 13 C NMR to elucidate the structural confirmations. The number, weight, and size average molecular weights of the terpolymer ligand were determined by gel permeation chromatography (GPC). The empirical formula of the repeating unit for both the terpolymer ligand and its metal complexes was clearly justified by elemental analysis. The thermal stability of the ligand and its metal complexes was established by thermogravimetric analysis (TGA). On basis of the TGA data, the kinetic and thermodynamic parameters such as activation energy (E a ), order of reaction (n), entropy change (DS), apparent entropy (S*), frequency factor (Z) and free energy change (DF) were calculated using Freeman-Carroll and SharpWentworth methods. Further the degradation mechanism for the thermal decomposition was also identified from Phadnis-Desphande method. Scanning electron microscopy (SEM) and X-ray diffraction (XRD) analysis were used to establish the surface morphology and nature of the terpolymer ligand and its metal complexes. In addition, the terpolymer ligand and its metal complexes were screened against the growth of few bacteria and their inhibitions were measured and reported.

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Section: Infrared Spectral Studiesmentioning

confidence: 72%

“…From the results, it was observed that the metal complexes obtained higher inhibition growth against certain bacteria and fungi compared to its respective ligands. Furthermore, the terpolymer ligand and its metal complexes also possess high thermal stability [17,18].…”

Section: Introductionmentioning

confidence: 99%

Synthesis, Spectral, Morphology, Thermal Degradation Kinetics and Antibacterial Studies of Terpolymer Metal Complexes

Azarudeen¹,

Burkanudeen²

2011

J Inorg Organomet Polym

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“…Thus SEM photographs of the terpolymer indicate the transition between crystalline and amorphous states. 41,42 The voids/channels present in the BSF terpolymer are responsible for the swelling behavior of the polymer and the reactivity (complexation) of active sites buried in the polymer matrix. In the case of BSF complexes, the morphology is quite different from the uncomplexed BSF terpolymer.…”

Section: Sem Studiesmentioning

confidence: 99%

“…Recently, thermally stable and biologically active coordination polymers have been reported by our research group. [28][29][30] The present article deals with the synthesis, characterization, morphology, thermal degradation kinetics, and antibacterial studies of 2-amino-6-nitro-benzothiazole-semicarbazide-formaldehyde terpolymer ligand and its metal complexes involving transition metal ions such as Cu 2+ , Ni 2+ , and Zn 2+ ions.…”

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confidence: 99%

In Vitro Bacterial Screening and Degradation Kinetics of a Terpolymer Ligand and Its Transition Metal Complexes

Ahamed¹,

Azarudeen²,

Prabu

et al. 2014

Adv Polym Technol

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ABSTRACT:A novel terpolymer ligand involving 2-amino-6-nitro-benzothiazole-semicarbazide-formaldehyde was synthesized in a 1:1:2 mole ratio with a dimethylformamide reaction medium at 150 ± 2°C for 6 h. The synthesized ligand was used to prepare various metal complexes with Cu 2+ , Ni 2+ , and Zn 2+ metal ions. The structure of the terpolymer ligand and its complexes were confirmed based on elemental analysis, molecular weight measurements, molar conductivity, magnetic susceptibilities, Fourier transform infrared, electronic, electron spin resonance, and 1 H and 13 C nuclear magnetic resonance spectroscopy. Scanning electronic microscopy and X-ray diffraction method were used to analyze the morphological features of the terpolymer and its metal complexes. The thermal stabilities of the terpolymer and its metal complexes were determined using thermogravimetric analysis. Kinetic parameters such as activation energy (E a ) and order of reaction (n), thermodynamic parameters, viz. entropy change ( S), free energy change ( F), apparent entropy (S*), and frequency factor (Z) were calculated using Sharp-Wentworth and Freeman-Carroll methods. The thermal degradation mechanism was also proposed for both the terpolymer ligand and its complexes using the Phadnis-Deshpande method. The terpolymer ligand and its complexes were screened for antibacterial activities against selected microorganisms such as Shigella sonnei, Escherichia coli, Klebsiella species, Staphylococcus aureus, Bacillus subtilis, and Salmonella typhimurium. C

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“…The results confirmed that the synthetic resin had excellent capacity to remove such selected metal ions. [13,14] In order to remove the hazardous wastes from the aqueous solution and make the environment free from pollution, this article presents the synthesis of a novel chelating terpolymer resin to remove the heavy and toxic metal ions. The synthetic resin is characterized by spectral, morphological, and thermal techniques.…”

Section: Introductionmentioning

confidence: 99%

Synthetic functionalized terpolymeric resin for the removal of hazardous metal ions: synthesis, characterization and batch separation analysis

Azarudeen¹,

Ahamed²,

Thirumarimurugan³

et al. 2015

Polym. Adv. Technol.

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An effectual functionalized synthetic resin involving anthranilic acid/4-nitroaniline/formaldehyde was synthesized for the detoxification of hazardous metal ions. The resin was characterized by Fourier transform infrared, 1 H, and 13 C nuclear magnetic resonance spectroscopy, and its morphology was established through scanning electron microscope and X-ray diffraction. The resin was analyzed by thermogravimetric analysis to assess the thermal stability, in which the resin could be used in high temperature aqueous solutions for the elimination of harmful metal ions. The ion-exchange property of the resin was evaluated by batch technique for specific metal ions viz. Fe . The study was extended to three variations such as effect of metal ion uptake in the presence of various electrolytes in different concentrations, effect of pH, and effect of contact time. The outcome proved that the resin can be used as a strong cation-exchanger to remove various metal ions from the solutions. The resin could be regenerated and reused with quantitative recovery of metal ions for few cycles. On comparison with the earlier reported resins, the synthesized resin has found excellent capability of metal ion recovery. The resin possesses an utmost ion-exchange capacity, which is in good harmony with isotherm models and kinetics.

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Biological and thermal investigations of polychelates derived from a novel terpolymer ligand

Cited by 22 publications

References 20 publications

Synthesis, Spectral, Morphology, Thermal Degradation Kinetics and Antibacterial Studies of Terpolymer Metal Complexes

Synthesis, Spectral, Morphology, Thermal Degradation Kinetics and Antibacterial Studies of Terpolymer Metal Complexes

In Vitro Bacterial Screening and Degradation Kinetics of a Terpolymer Ligand and Its Transition Metal Complexes

Synthetic functionalized terpolymeric resin for the removal of hazardous metal ions: synthesis, characterization and batch separation analysis

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