Fig. 6: Using selective alkene scavengers to switch between host–guest system states.
From: Controlling cyclodextrin host-guest complexation in water with dynamic pericyclic chemistry
a Scheme of retro-Diels–Alder reaction of 1a2f with GSH as alkene scavenger. b Fluorescence spectroscopy (100 µM, 0.5 M HEPES buffer, 298 K) data of 1a, 1a2f and 1a2f + different nucleophiles (10 equiv.) following 2 h incubation. λex = 360 nm, Slit 2.5, 380–600 nm. c Truncated 1H-NMR spectra (400 MHz, D2O/DMSO-d6 99:1, 298 K) of 1a•β-CD (1 mM, top), the solution immediately after addition of TCNE 2f (20 equiv., middle) and again after 48 h (bottom, asterix indicates unknown side product). See SI for further details.
