Synthesis and electrochemistry of meso-substitutes dipyrromethene nickel (II) complexes

A series of dipyrromethene nickel (II) complexes have been synthesized and their optical and electrochemical properties have been investigated. The electron donating-withdrawing properties of the para-substituents on the two meso-phenyl rings have great affect the chemical peaks of aromatic protons as compare to normal metalloporphyrin complexes.41