Advances Toward the Utilization of Cucurbit[n]uril and Selected Viologens in Molecular Machines and Devices

Abstract

Rotaxanes composed of a cyclic host molecule coordinating with an axle of one or more binding sites are key to creating molecular machines and devices. In this study, pseudorotaxanes of cucurbit[n]urils and a series of viologens are created in varying concentrations. After synthesis and characterization, the equilibrium binding constants and binding modes were determined by NMR. These studies will lead to the design of more complicated host guest systems.