Supplementary information

Supplementary Information

This file contains Supplementary Notes and Supplementary Figures S1-S7 with legends and additional references. The file contains details of synthetic procedures for the preparation of thread and rotaxane molecules, the results from a repeat run of the photochemical experiments carried out on rotaxane 1, and a Supplementary Figure containing the ¹H NMR spectra relevant to the experiment on control rotaxane 2 (reported in Fig. 4 of the main text). Also included are the results of photochemical experiments carried on model compounds and a discussion of these in relation to the kinetic mechanism of operation of the molecular machine. Explanatory notes are also provided in relation to the effect of stilbene isomerization on the macrocycle binding affinities for the ammonium sites and the calculation of the extent to which the molecular machine is moved away from equilibrium.

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