scholarly journals Analysis of Relationship Between Some Disazo Dyes Derived from 2,4-Dihydroxyquinoline and Its Anticancer and DNA Binding Properties by Density Functional Theory

Author(s):  
Muhammet ÇAVUŞ ◽  
Nesrin ŞENER
2011 ◽  
Vol 64 (2) ◽  
pp. 206 ◽  
Author(s):  
Hong Luo ◽  
Zhi-Ping Wang ◽  
An-Guo Zhang ◽  
Ke-Zhi Wang

2-(5-Phenylthiophen-2-yl)-1H-imidazo[4,5-f][1,10]phenanthroline (Hptip) and its RuII complex [Ru(bpy)2(Hptip)](PF6)2 (where bpy = 2,2′-bipyridine) have been synthesized and characterized by elemental analysis, 1H NMR spectroscopy, and mass spectrometry. The acid–base properties of the complex were studied by UV-visible and luminescence spectrophotometric pH titrations, and ground- and excited-state acidity ionization constants were derived. The DNA-binding properties of [Ru(bpy)2(Hptip)](PF6)2 were also investigated by means of UV-vis and emission spectroscopy, salt effects, steady-state emission quenching by [Fe(CN)6]4–, DNA competitive binding with ethidium bromide, DNA melting experiments, and viscosity measurements. Density functional theoretical calculations were also carried out in order to understand the DNA binding properties.


2021 ◽  
Author(s):  
Pradip Bera ◽  
Abhishek Aher ◽  
Paula Brandão ◽  
Sunil Manna ◽  
Indranil Bhattacharyya ◽  
...  

A series of structurally related Zn(II), Cu(II) and Ni(II) complexes of 4-(2-(2-(1-(pyrazin-2-yl)ethylidene)hydrazinyl)-thiazol-4-yl)-benzonitrile (PyztbH) have been synthesized and characterized by spectroscopy, single X-ray crystallography and density functional theory (DFT). All the...


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