Inclusion complex electrochemistry

An interesting finding in the CB7-MV2+ system is that, in clear contrast to host-guest systems involving CD hosts, the voltammetric data do not contain any indication that complex dissociation must precede any of the electron transfer processes. Furthermore, the electrochemistry of the inclusion complex is as fast—in the timescale accessible in these cyclic voltammetric experiments—as that of the free guest. This is clearly illustrated by the voltammograms depicted in Fig. 3.2, which show the comparative results of a scan-rate study on the MV2+/MV+ and CB7 MV2 + / 7 MV + redox couples. In both cases, the observed anodic and cathodic peak potentials are basically invariant as the scan rate is increased up to... 

ELECTROCHEMISTRY OF INCLUSION COMPLEXES FORMED BY CAVITAND-TYPE HOSTS... 

The formation of inclusion complexes and intertwined molecules, like the cate-nanes and rotaxanes discussed in Chapter 12, is the point of interest in most electrochemical investigations of CyDs in solution [23]. The internal hydrophobicity of the cavity with the hydrophilic bases of CyD allows us to increase the solubility of aromatic electroactive guests as shown for example in the use of azobenzene [24], ferrocene [25-28], or viologen [29], so that their electrochemistry can be carried out in an aqueous medium. 

Radi, AE and S Eissa (2010). Electrochemistry of cyclodextrin inclusion complexes of pharmaceutical compounds. The Open Chemical and Biomedical Methods Journal, 3, 74-85. 

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