Interaction between monomers of two surfactants derived from the [Ru(2,2′-bpy)3]2+ complex and α, β and γ-cyclodextrins: formation of [2]- and [3]-pseudorotaxanes
作者:M. Lopez-Lopez、F. Montilla、M. Olivares、J. A. Lebron、M. L. Moya、P. Lopez-Cornejo
DOI:10.1039/c3dt32197e
日期:——
Two new surfactants derived from the tris(2,2â²-bipyridine) ruthenium(II) complex, [Ru(2,2â²-bpy)3]2+, were synthesized and characterized: the double-tailed [Ru(2,2â²-bipy)2(4,4â²-(C11H23)2-2,2â²-bipy)]2+ surfactant (RuC11) and the mono-tailed [Ru(2,2â²-bipy)2(4-(CH3)-4â²-(C13H27)-2,2â²-bipy)]2+ surfactant (RuC13). The main characteristic of these species is the presence of an inorganic complex as the polar head of the surfactant with interesting luminescence properties, which were used to study the interaction of these cationic surfactants with α-, β- and γ-cyclodextrins (CD). The results showed the formation of [2]- and [3]-pseudorotaxanes. The binding constant values as well as the stoichiometry of the complexes formed were obtained; the results were confirmed, from a qualitative point of view, with NMR spectra.
我们合成并鉴定了由三(2,2â²-联吡啶)钌(II)配合物[Ru(2,2â²-bpy)3]2+衍生的两种新型表面活性剂:双尾[Ru(2,2â²-bipy)2(4,4â²-(C11H23)2-2,2â²-bipy)]2+表面活性剂(RuC11)和单尾[Ru(2,2â²-bipy)2(4-(CH3)-4â²-(C13H27)-2,2â²-bipy)]2+表面活性剂(RuC13)。这些种类的主要特征是存在一种无机复合物,作为表面活性剂的极性头,具有有趣的发光特性,我们利用这种特性研究了这些阳离子表面活性剂与δ-、δ-和δ-环糊精(CD)的相互作用。结果显示形成了 [2]- 和 [3]- 伪紫杉烷。研究获得了结合常数以及所形成复合物的化学计量学;核磁共振光谱从定性的角度证实了这些结果。