Synthesis, properties, and redox behavior of porphyrins with di(1-azulenyl)methylium units.

Abstract

Azulene has high polarized structure, and stabilize ionic states like cation and anion. Di(1-azulenyl)methylium units could result in the formation of stable cationic compounds with special properties. Multistage redox systems were based on a combination of stable di(1-azulenyl)methyl cation. It has a strong absorption band appears at visible region. We here in report the synthesis of porphyrins with di(1-azulenyl)methylium units at meso-position, and their redox behavior.