Geometrical structures, thermal properties and spectroscopic studies of Schiff base complexes: Correlation between ionic radius of metal complexes and DNA binding
作者:Sh.M. Morgan、A.Z. El-Sonbati、H.R. Eissa
DOI:10.1016/j.molliq.2017.05.114
日期:2017.8
(Kb) we noted that the highest value of Kb is belong complex (3) and these indicated that the Ni(II) is highly binding with CT-DNA and these due to the lower ionic radius. Furthermore, quantum chemical parameters of Schiffbase and its complexes were calculated and discussed. The antimicrobial activity of Schiffbase (QMP) and its M(II) complexes were studied and compared with the standard antibacterial
从4-氨基安替比林和喹啉-2-甲醛衍生的席夫碱制备了一系列新型的过渡金属配合物铜(II),钴(II),镍(II),锰(II)和镉(II)。 4-((喹啉-2-基)亚甲基氨基)-1,2-二氢-2,3-二甲基-1-苯基吡唑-5-酮(QMP)。结构特征来自元素分析,质谱,X射线,IR,1 H NMR,电子光谱,摩尔电导磁化率和热重分析。在研究的基础上,配位点被证明是通过环C O的氧和偶氮甲碱(HC N)组的氮。使用Coats–Redfern和Horowitz–Metzger方法计算热力学参数。从分解的热活化能值(E a)的席夫碱(QMP)及其金属配合物(1-5),发现配合物(3)的E a值高于其他配合物。Schiff碱(QMP)及其金属配合物的吉布斯分解自由能(ΔG⁎)为正值,表明该过程是非自发的。Schiff碱(QMP)及其金属配合物和小牛胸腺DNA之间的相互作用显示出减色作用和明显的红移。从结合常数(K
An Aminoantipyrine-containing Schiff base Fluorescent Chemosensor for
Hg2+-Selective Detection
作者:Xuelei He、Shijie Song、Chengke Li、Qiangqiang Zhang、Qiang Dong、Lin Li、Yonggang Qin、Qiang Zhao、Jianxiong Wang
DOI:10.2174/1570178620666230502160603
日期:2023.10
simple one-step pathway and led to intermolecular self-assembly through π-π stacking interactions. And the sensor DP could fluorescently “turn on” when the Hg2+ cation was added. The limitation of Hg2+ was 2.23×10-8 M, which indicated that the sensor DP could be useful as a highly selective and sensitive sensor for detecting Hg2+ ions in an aqueous medium by the strong interaction with DP. Notably