A Porphyrin bearing Tetrahydrothiophene Pickets; Co-ordination Behaviour and Electron Transfer

Article abstract of DOI:10.1039/DT9920002873

A novel 'picket-fence' porphyrin, 5,10,15,20-tetrakisporphyrin (H2L) with ligating tetrahydrothiophene rings disposed perpendicular to the porphyrin plane has been synthesised.Its zinc(II) derivative, , binds two silver(I) ions co-operatively with a dissociation constant of 4.8 x 10^-8 dm³ mol^-1.Time-resolved fluorescence lifetime measurements reveal the presence of intramolecular photoexcited electron transfer in this donor-acceptor system.