Synthesis, Characterization, DNA Binding Properties and Antioxidant Activity of Ln(III) Complexes with Schiff Base Ligand Derived from 3-Carbaldehyde Chromone and Aminophenazone
作者:Yong Li、Zheng-yin Yang、Tian-rong Li、Zeng-chen Liu、Bao-dui Wang
DOI:10.1007/s10895-010-0782-2
日期:2011.5
intercalation binding mode and the complexes have stronger binding affinity than the free ligand alone. Furthermore, antioxidant activity of the ligand and its complexes was determined by superoxide and hydroxyl radical scavenging methods in vitro, suggesting that Ln(III) complexes inhibit stronger antioxidant activity than the ligand alone and some standard antioxidants, such as mannitol and vitamin
合成了一种新型席夫碱配体色酮-3-甲醛-氨基苯甲酮 (L) 及其 Ln(III) (Ln = La, Yb) 配合物,并通过物理化学方法对其进行了表征。通过使用紫外-可见光谱、荧光光谱、溴化乙锭实验和粘度测量研究了生理缓冲液(pH = 7.10)中配体、Ln(III) 复合物和小牛胸腺 DNA 之间的相互作用,表明所研究的化合物都可以结合通过嵌入结合模式与 DNA 结合,复合物比单独的游离配体具有更强的结合亲和力。此外,配体及其配合物的抗氧化活性是通过体外超氧化物和羟基自由基清除方法测定的,表明 Ln(III) 配合物比单独的配体和一些标准抗氧化剂抑制更强的抗氧化活性,