研究論文

A novel macrocyclic 𝜋π-skeleton 1 containing thiazole and thiophene rings was synthesized via MacDonald [3+1]-type condensation, and its optical properties were investigated. Two sulfur atoms were effective for the bathochromic shift of the ultraviolet-visible absorption bands in comparison with the traditional porphyrin and chlorin compounds. The characteristics of the absorption spectrum and the nucleus-independent chemical shift calculations show that the 𝜋π-skeleton 1 is the chlorin-type compound.