Photophysical and electrochemical properties of a novel lanthanide tetra(4-sulfonatophenyl)porphyrin

摘要

A novel lanthanide porphyrin [Tb-III(H2TPPS)(IV)center dot H3O center dot 2H(2)O] (n) (1) (H2TPPS = tetra(4-sulfonatophenyl)porphyrin) has been synthesized through a hydrothermal reaction and structurally characterized by single-crystal X-ray diffraction. Complex 1 is characterized by a three-dimensional porous open framework with the terbium atom coordinated by eight oxygen atoms to yield a distorted square anti-prism. TG-DTA measurements reveal that complex 1 is thermally stable up to 400 A degrees C. Photoluminescence investigations show that complex 1 has an emission in the red region with a quantum yield of 1.7 % and a lifetime of 341 mu s. CV-DPV studies discover one reductive potential of -0.36 V and one quasi-reversible wave with E (1/2) = -0.82 V.