Fig. 10. (a) Structure of Leigh's peptidic rotaxane (S)-23.39 (b) Solvent-dependent CD spectra (0.1 mM) of rotaxane 23 in CHCl3 (green), 1 : 1 CHCl3/MeOH (cyan), 2 : 3 CHCl3/MeOH (yellow), 1 : 5 CHCl3/MeOH (black), 1 : 10 CHCl3/MeOH (blue) and 100% MeOH (red). Temperature-dependent CD spectra (0.1 mM) of rotaxane (S)-23 in (c) MeOH and (d) CHCl3 : 263 K (black), 273 K (red), 283 K (green), 293 K (blue), 303 K (cyan), 313 K (magenta), 323 K (yellow) and 333 K (black) Reprinted with permission from ref. 39. Copyright 2002 American Chemical Society.
