Synthesis and characterization of Schiff base octaazamacrocyclic complexes and their biological studies

Zafar, Hina; Kareem, Abdul; Sherwani, Asif; Owais, Mohammad; Ansari, Mohammad Azam; Khan, Haris M.; Khan, Tabreiz Ahmad

doi:10.1016/j.jphotobiol.2014.10.004

Cited by 40 publications

(16 citation statements)

References 38 publications

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“…a, the XRD peaks of seeds at 28.6° (111), 33.2° (200), 47.6° (220), and 56.4° (311) were assigned to cubic sphalerite (ZnS, PDF No. 80–0020) . In addition, these XRD peaks were narrow and strong, indicating a high purity and crystalline structure.…”

Section: Resultsmentioning

confidence: 95%

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Abiological Granular Sludge Formation Benefit for Heavy Metal Wastewater Treatment Using Sulfide Precipitation

Chai

et al. 2017

CLEAN Soil Air Water

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Solid-liquid separation is a fundamental and ubiquitous process in water purification. Previously, an abiological granular sludge (ABGS) formation strategy was developed to improve the solid-liquid separation in heavy metal wastewater treatment. Although this strategy can be effectively applied in hydroxide precipitation, it remains challenging to apply it to other precipitation processes and real wastewater. Here, conditions for ABGS formation in the sulfide precipitation were first optimized. The effect of pH, seed dosage, and flocculant dosage on settling velocity and metal removal was systematically investigated. The results showed that the settling velocity of ABGS reached up to 3.7 cm/s and the volume of ABGS was compressed to one fifth of the original under optimal conditions, that is, pH of 8.5, seeds dosage of 0.25 g/L, and polyacrylamide dosage of 10 mg/L. Moreover, the ABGS formed in the process was analyzed for morphology and phase composition to provide insight into the formation mechanism, involving surface nucleation and aggregation, flocculation, and rearrangement. Under the optimized conditions, real Pb-Zn smelting wastewater was treated. The settling velocity (3.4 cm/s) of ABGS formed in real wastewater was as high as that in synthetic wastewater. Therefore, the ABGS strategy is potential to be scaled up to industrial application.

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Section: Resultsmentioning

confidence: 95%

“…The peaks at 3404, 1615, 1112, and 618 cm À1 were typical peaks for ZnS seeds. The adsorption peak at 618 cm À1 was assigned to stretching of ZnÀS bond [36]. The broad band at 3404 cm À1 was a typical stretch for the OÀH group [40].…”

Section: Formation Mechanism Of Abgsmentioning

confidence: 99%

Abiological Granular Sludge Formation Benefit for Heavy Metal Wastewater Treatment Using Sulfide Precipitation

Chai

et al. 2017

CLEAN Soil Air Water

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“…Transition metal complexes of oxygen and nitrogen donor Schiff bases continue to attract researchers due to their simplicity in preparation, diverse properties, and wide application in catalysis and pharmacological applications (e.g. antitumor, antifungal, antibacterial) . 1,3‐Indandione is the best known ketone in the indan group.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and multi‐spectroscopic study on DNA‐binding, cleavage and biological properties of M(II) complexes based on N₂O₂ donor Schiff base ligand

Dhayabaran¹,

Prakash²

2017

Luminescence

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A novel Schiff base, (S,Z)-4-(methylthio)-2-((3-oxo-2,3-dihydro-1H-inden-1-ylidene)amino)butanoic acid (L) and four M(II) complexes (where M = Co, Cu, Ni and Zn) were synthesized and characterized. The DNA-binding characteristics of the complexes were investigated using various spectroscopic methods and viscosity measurements. Analysis of the results suggests that all the complexes bind to calf thymus DNA via intercalation. Among the four, Cu(II) complex was found to promote the photocleavage of plasmid DNA pBR322 under irradiation at 365 nm. These complexes also exhibit good antioxidant activities against 2,2-diphenyl-1-picrylhydrazyl radical. In vitro antibacterial and antifungal assay indicates that these complexes are good antimicrobial agents.

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“…obalt(III) and cobalt(II) Schiff base complexes derived from symmetrical and unsymmetrical Schiff bases have gained importance for their applicability in the biological field [1][2][3][4] and catalytic activity. [5][6][7] The discovery of certain cobalt(III) Schiff base complexes that have antiviral properties prompted scientists to initiate an investigation of Co(III) interactions with proteins and nucleic acids.…”

Section: Introductionmentioning

confidence: 99%

Symmetrical and Unsymmetrical Schiff Bases Derived from 3,4-Diaminobenzophenone: Synthesis and Thermodynamics of Five Coordinated Tertiaryphosphine Cobalt(III) Complexes

Mohammadi¹,

Asadi²,

Khah³

et al. 2016

Croat. Chem. Acta

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Synthesis and characterization of Schiff base octaazamacrocyclic complexes and their biological studies

Cited by 40 publications

References 38 publications

Abiological Granular Sludge Formation Benefit for Heavy Metal Wastewater Treatment Using Sulfide Precipitation

Abiological Granular Sludge Formation Benefit for Heavy Metal Wastewater Treatment Using Sulfide Precipitation

Synthesis and multi‐spectroscopic study on DNA‐binding, cleavage and biological properties of M(II) complexes based on N₂O₂ donor Schiff base ligand

Symmetrical and Unsymmetrical Schiff Bases Derived from 3,4-Diaminobenzophenone: Synthesis and Thermodynamics of Five Coordinated Tertiaryphosphine Cobalt(III) Complexes

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Synthesis and characterization of Schiff base octaazamacrocyclic complexes and their biological studies

Cited by 40 publications

References 38 publications

Abiological Granular Sludge Formation Benefit for Heavy Metal Wastewater Treatment Using Sulfide Precipitation

Abiological Granular Sludge Formation Benefit for Heavy Metal Wastewater Treatment Using Sulfide Precipitation

Synthesis and multi‐spectroscopic study on DNA‐binding, cleavage and biological properties of M(II) complexes based on N2O2 donor Schiff base ligand

Symmetrical and Unsymmetrical Schiff Bases Derived from 3,4-Diaminobenzophenone: Synthesis and Thermodynamics of Five Coordinated Tertiaryphosphine Cobalt(III) Complexes

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Synthesis and multi‐spectroscopic study on DNA‐binding, cleavage and biological properties of M(II) complexes based on N₂O₂ donor Schiff base ligand