Akademik Veri Yönetim Sistemi
Synthetic Metals, cilt.318, 2026 (SCI-Expanded, Scopus)
In this study, novel coumarin ( 2 ) α-substituted metallo-phthalocyanine complexes ( 3 - 6 ) were synthesized, and their electrochemical and in situ spectroelectrochemical properties were systematically examined. Voltammetric studies revealed predominantly ligand-centered redox processes for all complexes, while complexes 3 and 4 additionally displayed metal-centered oxidation and reduction processes, indicating strong metal-ligand electronic interactions. The complex 4 showed the richest redox behavior, including multiple metal-based transitions, and demonstrated superior electrocatalytic activity toward oxygen reduction and oxygen evolution reactions, attributed to strong metal–ligand electronic interactions within the Fe-N4 coordination structure. In situ spectroelectrochemical measurements confirmed the reversible nature of the electron transfer processes through well-defined spectral changes and isosbestic points. The combined electrochemical and spectroscopic findings provide valuable insight into the electronic structures of coumarin-functionalized phthalocyanines and highlight their potential as efficient electrocatalysts and electrochromic materials.