Fig. 6. (a) Fluorescence spectra (CH2Cl2, 50 μM, λ ex = 370 nm) of [2]rotaxane 1 (left) and 6 (right) before and after double oxidation by addition of the oxidant Fe(ClO4)3. (b) Scan rate dependent cyclic voltammograms of [2]rotaxane 6 (5 mM) in CH2Cl2 against Fe(Cp*)2 0/+ with tetrabutylammonium BArF24 – (0.1 M) as electrolyte. (c) Six-member square scheme with thermodynamic parameters obtained by digital simulations for translation equilibria of 6. (d) Schematic representation for the electrochemically triggered expulsion process in [2]rotaxane 6 2+.
