Synthesis of novel porphyrin dimers with twisted orientations: models for biological excitation energy and electron transfer reactions

Abstract

Three novel dimeric porphyrins bridged by spirobi-indan spacers have been synthesized; for these monozinc mixed porphyrins (Zn-P–H₂-P), the rates of intramolecular singlet excitation energy transfer from Zn-P to H₂-P were determined by picosecond time-resolved fluorescence spectroscopy.