The relaxation time increases with distance between two porphyrin rings and the results provide an evidence of formation of the complex.

An adhesive composition includes a curable resin and a porphyrin derivative, in which the porphyrin derivative has at least one carboxylic acid group that is typically pendant from the porphyrin ring.

This review summarizes the recent progress in the research of fluoroporphyrins and its proper-ties. There are two methods for synthesis of the fluoroporphyrins: direct and indirect fluorination.