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A new ternary Cu (II) complex with 4,7‐dimethyl‐1,10‐phenanthroline and NOO‐type tridentate Schiff base ligand: Synthesis, crystal structure, biomacromolecular interactions, and radical scavenging activities
Applied Organometallic Chemistry ( IF 3.7 ) Pub Date : 2020-09-11 , DOI: 10.1002/aoc.6016
Duygu İNCİ 1
Affiliation  

NOO‐type tridentate Schiff base, N‐salicylidene‐2‐aminobenzoic acid, (H2L), and its ternary Cu (II) complex containing H2L Schiff base and 4,7‐dimethyl‐1,10‐phenanthroline (4,7‐dmphen), [Cu(4,7‐dmphen)(H2L)]27H2O, have been synthesized and characterized by CHN analysis, ESI‐MS, FTIR, and single‐crystal X‐ray diffraction techniques. The interaction of alone H2L Schiff base ligand and ternary Cu (II) complex with biomacramolecules {calf thymus DNA (CT‐DNA) and bovine serum albumin (BSA)} has been investigated by electronic absorption and fluorescence spectroscopy. The experimental results indicate that H2L Schiff base ligand and ternary Cu (II) complex bind to CT‐DNA by means of a moderate intercalation mode. Furthermore, the fluorescence quenching mechanism between H2L Schiff base ligand and ternary Cu (II) complex with BSA possesses a static quenching process. Radical scavenging activity of H2L Schiff base ligand and ternary Cu (II) complex was measured in terms of EC50, using the DPPH and H2O2 methods. Biomacromolecule interactions and scavenging activity studies revealed that ternary Cu (II) complex yielded better results than H2L Schiff base ligand alone.

中文翻译:

具有4,7-二甲基-1,10-菲咯啉和NOO型三齿Schiff碱配体的新型三元Cu(II)配合物:合成,晶体结构,生物大分子相互作用和自由基清除活性

NOO型三齿席夫碱,N-水杨基-2-氨基苯甲酸(H 2 L)及其含H 2 L席夫碱和4,7-二甲基-1,10-菲咯啉的三元Cu(II)配合物(4 ,7-dmphen),[Cu(4,7-dmphen)(H 2 L)] 2 7H 2 O已通过CHN分析,ESI-MS,FTIR和单晶X射线衍射技术进行了合成和表征。已经通过电子吸收和荧光光谱法研究了单独的H 2 L Schiff碱配体和三价Cu(II)与生物大分子{小牛胸腺DNA(CT‐DNA)和牛血清白蛋白(BSA)}的相互作用。实验结果表明,H 2L Schiff碱配体和三价Cu(II)络合物通过中等插入模式与CT-DNA结合。此外,H 2 L Schiff碱配体与BSA三元Cu(II)配合物之间的荧光猝灭机理具有静态猝灭过程。使用DPPH和H 2 O 2方法,根据EC 50测定H 2 L Schiff碱配体和三价Cu(II)配合物的自由基清除活性。生物大分子相互作用和清除活性研究表明,三元Cu(II)配合物比单独的H 2 L Schiff碱配体产生更好的结果。
更新日期:2020-11-06
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