Syntheses and Electronic Properties of the Porphyrin Dimers as Redox Tweezers

Abstract

Calix[4]arene-porphyrin conjugate (1) serves as a molecular tweezers which captures 1,4-diazabicyclo[2.2.2]octane [DABCO] (2). It is reported that the assembling formation between calix[4]arene-porphyrin conjugate and DABCO depends on the concentration of DABCO. In this presentation, the electrochemical characterizations of 1 with and without 2 is reported. Electrochemical behavior of 1 in the presence of 2 showed the cooperative two-electron oxidation of 1 based on Por/Por•+ system by forming 1: 1 inclusion complex. However, the second oxidation of the porphyrin of 1 is corresponding uncoordinated one. As for the control system, the electrochemical behaviors of the porphyrin monomer and 2 was examined.