Multiredox-arrays

After having learned the lesson how to recognise typical spectroscopic patterns of the porphyrin ligand-centred electron transfer, and to discriminate them from metal-centred reaction, the assignment of oxidation states in multiredox arrays including metalloporphyrins is feasible as exemplified in Section 4.7, where covalently bound fullerene-[(TPP)Co] dyads were explored by spectroelectrochemical means. 

Multiredox-Arrays Cobalt(II)Porphyrin-Fullerene Dyads... 

Within the large number of multiredox arrays containing metalloporphyrins/covalently bound (conjugate) fullerene-metalloporphyrin dyads have gained enormous interest in the last ten years, mainly due to their potential application as artificial antennae Due to the multiredox behaviour of the fullerenes (up to six reversible one-electron reductions and at least one reversible one-electron oxidation), the porphyrin ligands and the incorporated metals, the assignment of electron-transfer steps in such systems is difficult. Recently, spectroelectrochemical characterisation has been carried out on a number of fullerene-[(TPP)Co] dyads shown in Scheme 4.3, which exhibit rather complex redox behaviour (Figure 4.19). 

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