Onagi, H.Blake, C.Easton, C.Lincoln, S.2007-02-252007-02-252003Chemistry - A European Journal, 2003; 9(24):5978-59880947-65391521-3765http://hdl.handle.net/2440/17920The definitive version may be found at www.wiley.comEight new [2]rotaxanes have been prepared, incorporating an -cyclodextrin as the rotor, a stilbene as the axle, and trinitrophenyl substituents as capping groups. Strategies have been devised to elaborate these by linking the rotor to the axle, to produce two new [1]rotaxanes. Rotational motion in a selection of these rotaxanes has been investigated through the application of two-dimensional NMR spectroscopy by performing TOCSY, DQF-COSY, ROESY and HMQC experiments. This has shown that a methoxyl group incorporated on the stilbene and a succinamide joining the stilbene and the cyclodextrin behave analogously to a ratchet tooth and pawl, respectively, to restrict rotation.enCyclodextrinsmolecular devicesmolecular dynamicsNMR spectroscopyrotaxanesJournal article002003113810.1002/chem.2003052800001874252000032-s2.0-034673216658363