Publication details
Proton and Electron Transfer Control of the Position of Cucurbit[n]uril Wheels in Pseudorotaxanes
| Authors | |
|---|---|
| Year of publication | 2007 |
| Type | Article in Periodical |
| Magazine / Source | ADVANCED FUNCTIONAL MATERIALS |
| MU Faculty or unit | |
| Citation | |
| Field | Macromolecular chemistry |
| Keywords | cucurbiturils;pseudorotaxane |
| Description | This paper presents an overview of recent work on the binding interactions between a series of 4,4'-bipyridinium (viologen) derivs. 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 aq. soln. 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 oxidn. of the axle's ferrocenyl end groups leads to controlled displacement of the CB7 wheel. |