Synthesis and properties of a series of porphyrin-nicacid dyads and their Mn and Zn complexes

In this article, a series of porphyrin-nicacid dyads and their Mn and Zn complexes were synthesized and characterized by elemental analysis, UV–Vis, IR, MS, and ¹H NMR spectroscopies. Fluorescence studies show that for increasing length of alkoxy chains the fluorescence intensity and quantum yield of the porphyrin ligands is C₂ > C₃ > C₄ > C₅ > C₆ > C₁₀. Electrochemical results indicate that the length of side chain has little effect on the redox potential.