Efficient electron transfer in β-substituted porphyrin-C60 dyads connected through a p-phenylenevinylene dimer

Two new porphyrin-C-60 dyads have been synthesized in which the electroactive moieties have been connected through a p-phenylenevinylene dimer. The electrochemical Study confirms the amphoteric redox behavior of these dyads. Irradiation of these compounds gives rise to the corresponding radical pair confirming that substitution on the beta-position of the porphyrin facilitates the electronic communication between the porphyrin and C-60. (C) 2008 Elsevier Ltd. All rights reserved.