Antioxidant, electrochemical, thermal, antimicrobial and alkane oxidation properties of tridentate Schiff base ligands and their metal complexes

Ceyhan, Gökhan; Çelik, Cumali; Uruş, Serhan; Demirtaş, İbrahim; Elmastaş, Mahfuz; Tümer, Mehmet

doi:10.1016/j.saa.2011.05.106

Cited by 101 publications

(57 citation statements)

References 37 publications

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“…The rest of the data can be seen in Table 1. The redox processes for all the complexes can be defined as the formation of M(II) or M(I) with a simple one-electron process [24,25]. The possible redox process for the ligands can be shown as in Figure 4. …”

Section: Electrochemical Properties Of the Synthesized Compoundsmentioning

confidence: 99%

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Cobalt(II) and Manganese(II) Complexes of Novel Schiff Bases, Synthesis, Charcterization, and Thermal, Antimicrobial, Electronic, and Catalytic Features

Bal

2014

Advances in Chemistry

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Carbazoles containing two new Schiff bases (Z,Z)-N,N -bis[(9-ethyl-9H-carbazole-and their Co(II) and Mn(II) complexes were synthesized and characterized using various spectroscopic methods and thermal analysis, which gave high thermal stability results for the ligands and their cobalt complexes. The title compounds were examined for their antimicrobial and antifungal activities, which resulted in high activity values for the ligands and their manganese complexes. Oxidation reactions carried out on styrene and cyclohexene revealed that the complex compounds were the most effective catalysts for styrene oxidation, giving good selectivities than those of cyclohexene oxidation. Electronic features of the synthesized compounds were also reported within this work.

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Section: Electrochemical Properties Of the Synthesized Compoundsmentioning

confidence: 99%

“…In addition their catalytic activities, various Schiff bases have also been examined for their biological activities in many previous studies [23][24][25]. This interest comes from the fact that their metal complexes can be used as antimicrobial, antifungal, and antitumor agents [26][27][28].…”

Section: Introductionmentioning

confidence: 99%

Cobalt(II) and Manganese(II) Complexes of Novel Schiff Bases, Synthesis, Charcterization, and Thermal, Antimicrobial, Electronic, and Catalytic Features

Bal

2014

Advances in Chemistry

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“…However, when excessive, those by-products can attack biological molecules such as lipids, proteins, enzymes, DNA and RNA, leading to cell or tissue injury [2]. Superoxide anion radicals (O 2…”

Section: Introductionmentioning

confidence: 99%

Albumin Conjugating Amino Acid Schiff-Base Metal Complexes for Scavenging Superoxide Anion Radical

Zhou

Pan

et al. 2015

J Inorg Organomet Polym

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Superoxide anion radical (O 2•-) is a toxic reactive oxygen species (ROS). Schiff-base metal complexes have been widely studied as synthetic antioxidants to scavenge ROS. However, it is toxic and shows poor water solubility. In this work, a kind of novel water-soluble biopolymer/metal complex conjugate (HO-SAM@BSA) was prepared by binding the 4-hydroxy-salicylaldehyde amino acid Schiffbase metal complexes (HO-SAM, M = Cu, Zn, Co) with water-soluble biopolymer bovine serum albumin (BSA). The conjugates were characterized using IR, UV-Vis, circular dichroism spectra (CD), and polyacrylamide gel electrophoresis (PAGE). The results show that the structure of BSA is maintained when the binding rate (n HO-SAM: n BSA ) of amino acid Schiff-base metal complexes is 10. In addition, the O 2•-scavenging activities of resultant conjugates were determined via nitrobule tetrazolium assay method. After combining HO-SAM into BSA, the poor water-solubility of HO-SAM is improved, and the O 2•-scavenging activity of BSA increases dramatically. The conjugation HOSCCu@BSA displays excellent O 2•-scavenging activity. When the EC 50 value was 0.10 lmol/L, the analog quantity reached 41 % of natural SOD. Therefore, it can act as a bifunctional mimic of enzyme, which has a great application prospect in antioxidant drug.

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“…The reaction between antioxidant molecules and DPPH radical results in the scavenging of the radical by hydrogen or electron donation, the antioxidants cause to a decrease of the absorbance of the DPPH radical. DPPH is usually used as a substrate to evaluate the activity of antioxidants [22]. The results are shown in Table 8.…”

Section: Antioxidant Studymentioning

confidence: 99%

Synthesis and spectral studies of metal complexes of a Schiff base derived from (2-amino-5-chlorophenyl)phenyl methanone

Mini

Sadasivan

Meena

et al. 2015

Spectrochimica Acta Part A: Molecular and Biomolecular Spectros

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Antioxidant, electrochemical, thermal, antimicrobial and alkane oxidation properties of tridentate Schiff base ligands and their metal complexes

Cited by 101 publications

References 37 publications

Cobalt(II) and Manganese(II) Complexes of Novel Schiff Bases, Synthesis, Charcterization, and Thermal, Antimicrobial, Electronic, and Catalytic Features

Cobalt(II) and Manganese(II) Complexes of Novel Schiff Bases, Synthesis, Charcterization, and Thermal, Antimicrobial, Electronic, and Catalytic Features

Albumin Conjugating Amino Acid Schiff-Base Metal Complexes for Scavenging Superoxide Anion Radical

Synthesis and spectral studies of metal complexes of a Schiff base derived from (2-amino-5-chlorophenyl)phenyl methanone

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