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Proton and Electron Transfer Control of the Position of Cucurbit[n]uril Wheels in Psendorotaxanes

机译:吡咯烷烷中葫芦[n]孔轮位置的质子和电子转移控制

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This paper presents an overview of recent work on the binding interactions between a series of 4,4'-bipyridinium (viologen) derivatives and the hosts cucurbit[6]uril (CB6) and cucurbit[7]uril (CB7), which give rise to stable 'wheel-on-an-axle' inclusion complexes (pseudorotaxanes) in aqueous solution. The carboxylic acid termini on the pseudorotaxane axle can be used as handles to control—via proton transfer reactions—the relative position of the CB wheel along the axle. We also report on a different type of pseudorotaxane in which the reversible oxidation of the axle's ferrocenyl end groups leads to controlled displacement of the CB7 wheel.
机译:本文概述了一系列4,4'-联吡啶鎓(紫精)衍生物与宿主葫芦[6] uril(CB6)和葫芦[7] uril(CB7)之间的相互作用的最新进展。水溶液中稳定的“轮轴式”包合物(假轮烷)。假轮烷轴上的羧酸末端可以用作手柄,通过质子转移反应控制CB轮沿轴的相对位置。我们还报道了另一种类型的假轮烷,其中车轴二茂铁基端基的可逆氧化导致CB7轮的受控位移。

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