Binding propterties of two Ru(II) polypyridyl complexes containing dppz units and fluorine groups with poly(U)·poly(A) ∗ poly(U) triplex
作者:Fangfang Wang、Shuai Ma、Yongdeng Feng、Xiaohua Liu、Lifeng Tan
DOI:10.1016/j.jinorgbio.2019.110705
日期:2019.8
Ru2 stabilizes the triplex strongly than Ru1. Denaturation of the triplex shows that both Ru1 and Ru2 can not only highly stabilize the template duplex of the triplex, but also significantly stabilize the third strand. Compared with the triplex stabilizing effects for the reported Ru(II)-dppz complexes, thermal melting experiments suggest that the fluorine substituent on the ligand dppz can probably
在这项工作中,两个含有氟取代基[Ru(bpy)2(7-F-dppz)的Ru(II)-dppz(dppz =双吡啶[3,2- a:2',3'- c ]吩嗪)配合物] 2+(Ru 1,bpy = 2,2'-联吡啶,7-F-dppz = 7-氟双吡啶[3,2- a:2',3'- c ]吩嗪)和[Ru(phen)2( 7-F-dppz)] 2+(Ru 2,phen = 1,10-菲咯啉),已经合成并表征。Ru 1和Ru 2的结合性质RNA的聚(U)·聚(A)*聚(U)三重态已通过光谱方法和粘度测量进行了研究。获得的结果表明,两种配合物与三链体的结合差异可能归因于辅助配体效应,这意味着辅助配体的更好的平面性和更大的疏水性有利于Ru 2和三联体之间的π-π堆积相互作用。因此,Ru 2比Ru 1更加牢固地稳定了三重态。三元体的变性表明Ru 1和Ru 2不仅可以高度稳定三链体的模板双链体,而且可以显着稳定