Synthesis, characterization and DNA-binding and DNA-photocleavage studies of two Ru(II) complexes containing two main ligands and one ancillary ligand
Synthesis, characterization and DNA-binding and DNA-photocleavage studies of two Ru(II) complexes containing two main ligands and one ancillary ligand
复制标题
含有两个主要配体和一个辅助配体的两种 Ru(II) 配合物的合成、表征以及 DNA 结合和 DNA 光裂解研究
DOI:
10.1016/j.poly.2011.04.047
复制
发表时间:
2011-08
期刊:
影响因子:
2.6
通讯作者:
Chen, Huo-Yan
中科院分区:
文献类型:
--
作者:
Sun, Jing;Liu, Jie;Gao, Feng;Ji, Liang-Nian;Wu, Shuo;Mao, Zong-Wan;Chen, Huo-Yan
DNA-binding and DNA-photocleavage properties of two Ru(II) complexes, [Ru(L1)(dppz)2](PF6)4(1) and [Ru(L2)(dppz)2](PF6)4(2) (L1=5,5′-di(1-(triethylammonio)methyl)-2,2′-dipyridyl cation; L2=5,5′-di(1-(tributylammonio)methyl)-2,2′-dipyridyl cation; dppz=dipyrido[3,2-a:2′,3′-c]phenazine, have been investigated. Experimental results show that the DNA-binding affinity of complex 1 is greater than that of 2, both complexes emit luminescence in aqueous solution, either alone or in the presence of DNA, complex 1 can bind to DNA in an intercalative mode while 2 most likely interacts with DNA in a partial intercalation fashion, and complex 2 serves as a better candidate for enantioselective binding to CT-DNA compared with 1. Moreover, complex 1 reveals higher efficient DNA cleavage activity than 2, during which supercoiled DNA is converted to nicked DNA with both complexes. Theoretical calculations for the two complexes have been carried out applying the density functional theory (DFT) method at the level of the B3LYP/LanL2DZ basis set. The calculated results can reasonably explain the obtained experimental trends in the DNA-binding affinities and binding constants (Kb) of these complexes.
登录
查看更多内容
影响因子:
62.1
作者:
B. Armitage
通讯作者:
B. Armitage
DOI:
10.1002/chin.200709227
发表时间:
2007
期刊:
影响因子:
--
作者:
J. Vos;J. Kelly
通讯作者:
J. Kelly
影响因子:
4.4
作者:
HAY, PJ;WADT, WR
通讯作者:
WADT, WR
影响因子:
14.9
作者:
S. Friedman;S. Som;Lian-Fu Yang
通讯作者:
S. Friedman;S. Som;Lian-Fu Yang
影响因子:
4.4
作者:
BECKE, AD
通讯作者:
BECKE, AD