Double complex formation of naphthadiaza-crown macrocycle bearing two pyridine side arms with ZnTPP

During the last two decades, zinc metalloporphyrins (ZnTPPs) have been studied,inspired by several novel applications in different fields, namely solar energy harvesting,optoelectronics, sensors, and photodynamic therapy species [1]. Meanwhile, the interactions of donor molecules, as axial ligands of metalloporphyrin, with metalloporphyrins either in their ground or excited states can intensely influence of their UV/Vis and fluorescence spectra, redox properties, wherein the structure is crucial in understanding all the above-mentioned applications for ZnTPPs [1, 2]. After our recent successful synthesis of complex of ZnTPP with the aza-crown macrocycles bearing pyridine moiety (ZnTPPbenz) 2, herein we describe synthesis and spectroscopic results for a new double-complex of ZnTPP, axially ligated with naphthdiaza-crown macrocycle having two pyridine side arms (ZnTPPnaph).