Biologically active and thermally stable polymeric Schiff base and its metal polychelates: Their synthesis and spectral aspects

Rasool, Raza; Hasnain, Sumaiya

doi:10.1016/j.saa.2015.03.116

Cited by 11 publications

(6 citation statements)

References 23 publications

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“…If G is lower than 4.0, it indicates that significant exchange coupling is present and that the misalignment is appreciable and support the strong filed ligand. The observed value for the exchange interaction parameter for the SBT‐Cu(II) was G = 5.80, suggesting that the ligand has a weak field …”

Section: Resultssupporting

confidence: 68%

“…The observed value for the exchange interaction parameter for the SBT-Cu(II) was G = 5.80, suggesting that the ligand has a weak field. 32,33 Table III summarizes the thermal behavior of SBT and SBT-M(II) in the presence of nitrogen gas. The initial weight loss (1-2%) was observed in the temperature range 25-100°C for SBT and SBT-M(II), which was because of the weight loss of bonded moisture and trapped solvents.…”

Section: Esr Spectra Of Sbt-cu(ii)mentioning

confidence: 99%

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Synthesis, Characterization, and Antimicrobial Activity of Salisaldehyde‐Based Terpolymeric Ligand and Its Transition Metal Complexes

et al. 2016

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In this study, we first synthesized a salisaldehyde-based terpolymer (SBT) ligand using salisaldehyde and phenylthiourea with glutaraldehyde. We then synthesized SBT metal complexes (SBT-M(II)) with the use of transition metal ions, such as Co(II), Ni(II), Cu(II), and Zn(II). To elucidate the structure and geometry of the metal ions, SBT and SBT-M(II) were characterized by elemental and spectral analysis. SBT-Co(II) and SBT-Ni(II) showed six coordination bonds with two water molecules, whereas SBT-Cu(II) and SBT-Zn(II) showed four coordination bonds. Gel permeation chromatography was used to determine the molecular weight of SBT. The thermal stability of SBT and SBT-M(II) was tested using thermogravimetric and differential thermal analysis. Thermal kinetic parameters such as activation energy and exponential factor were calculated using the Coats-Redfern method. In addition, antibacterial activity of SBT and SBT-M(II) was evaluated against several bacterial and fungal cultures using the agar well diffusion method. The polarity of the metal ion in SBT-M(II) was reduced which might contribute to its superior antimicrobial property. C 2016 Wiley Periodicals, Inc. Adv Polym Technol 201 , , 21689; View this article online at wileyonlinelibrary.com. Experimental MATERIALSSalisaldehyde, phenylthiourea, glutaraldehyde, sodium hydroxide (NaOH), and metal salts were purchased from Sigma

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Section: Resultssupporting

confidence: 68%

Section: Esr Spectra Of Sbt-cu(ii)mentioning

confidence: 99%

Synthesis, Characterization, and Antimicrobial Activity of Salisaldehyde‐Based Terpolymeric Ligand and Its Transition Metal Complexes

et al. 2016

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“…[30][31][32][33] Manganese and some other metal chelates of polymeric Schiff base ligand were studied as antimicrobial reagents by Rasool and Hasnain. 34 Moreover, the coordination chemical behaviour and biological activity of Zn 2+ , Cu 2+ , Ni 2+ , Co 2+ and Mn 2+ towards ONO-tridentate imine ligand, i.e. 2-[(2-hydroxynaphthalen-1-ylmethylene)-amino]-benzoic acid, as a nonwater-soluble ligand was investigated and reported by Refat et al 35 Zayed et al presented the coordination chemistry, biological efficiency and molecular docking studies of various transition metal complex.…”

Section: Introductionmentioning

confidence: 99%

Biological and catalytic potential of sustainable low and high valent metal-Schiff base sulfonate salicylidene pincer complexes

2019

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“…A lot of research work has been done in our laboratory on the synthesis of metal polychelates . A simple way of synthesizing non‐cross‐linked polyurea from very simple reacting units has been described in this paper, representing a leading edge research in this rapidly changing and evolving field.…”

Section: Introductionmentioning

confidence: 99%

Antimicrobial Polyurea: Synthesis, Spectral, and Thermal Overview of Some New Metal Polychelates

2015

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Novel polyureas were synthesized by the addition polymerization of o-phenylenediamine and toluene 2,4 diisocyanate in 1:1 molar ratio to investigate the biocidal nature of polyurea ligand and its metal polychelates. Some of the transitional metals were allowed to react with this polyurea in 2:1 ligand to metal mole ratio. The successful preparation of polyurea and metal-containing polyurea was analyzed by elemental analysis and other analytical techniques such as FTIR and 1 H NMR. The geometry of metal-containing polyurea was determined by electronic spectra and magnetic moment measurement. Thermal stability of entire series of synthesized compound was determined by thermogravimetric analysis, and results show that incorporation of metal enhances thermal stability. Microbial actions of the polyurea's were investigated against some bacteria and fungi, namely Staphylococcus aureus, Escherichia coli, and Bacillus subtilis (bacteria), Aspergillus niger, Candida albicans, and Aspergillus flavus (fungi). Antimicrobial screening tests gave good results in the presence of metal ion in the ligand system. C

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Biologically active and thermally stable polymeric Schiff base and its metal polychelates: Their synthesis and spectral aspects

Cited by 11 publications

References 23 publications

Synthesis, Characterization, and Antimicrobial Activity of Salisaldehyde‐Based Terpolymeric Ligand and Its Transition Metal Complexes

Synthesis, Characterization, and Antimicrobial Activity of Salisaldehyde‐Based Terpolymeric Ligand and Its Transition Metal Complexes

Biological and catalytic potential of sustainable low and high valent metal-Schiff base sulfonate salicylidene pincer complexes

Antimicrobial Polyurea: Synthesis, Spectral, and Thermal Overview of Some New Metal Polychelates

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