Hetero dinuclear alpha bis 3,5 ditertbutylphenyloxy bridged ball-type metallophthalocyanines: synthesis, characterization, electrochemistry, in situ spectroelectrochemistry, and electrocatalytic activity toward ORR and OER

Şahin S., AKDAĞ Ö., ODABAŞ Z., ÖZKAYA A. R.

Journal of Electroanalytical Chemistry, cilt.1015, 2026 (SCI-Expanded, Scopus) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 1015
  • Basım Tarihi: 2026
  • Doi Numarası: 10.1016/j.jelechem.2026.120242
  • Dergi Adı: Journal of Electroanalytical Chemistry
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Chemical Abstracts Core, Chimica, Compendex, INSPEC
  • Anahtar Kelimeler: Ball-type, Electracatalyst, Electrochemistry, Heterodinuclear, Metalophthalocyanine, OER, ORR, Spectroelectrochemistry, Synthesis
  • Marmara Üniversitesi Adresli: Evet

Özet

In this study, alpha-substituted heterodinuclear ball-type phthalocyanine complexes CoFePc2 (3), CoMn(OAc)Pc2 (4), and FeMn(OAc)Pc2 (5) were synthesized and characterized for the first time. Phthalocyanines exhibited high solubility in organic solvents thanks to their tertiary butyl groups.Elemental analysis, FT-IR, UV–Vis, and MALDI-TOF mass spectroscopy were used to characterize them. Their redox properties were clarified by using cyclic voltammetry and square-wave voltammetry, in situ spectroelectrochemical, in situ electrocolorimetric, and electrocatalytic analyses, providing new insights into the structure-property relationships of alpha-substituted heterodinuclear ball-type phthalocyanine systems. Redox-active metal-centered complexes 3–5 displayed similar metal-based and ring-based redox behavior and spectral changes. CoMn(OAc)Pc2 (4) and FeMn(OAc)Pc2 (5) indicated extra Mn(III)/Mn(II) reduction and Mn(III)/Mn(IV) oxidation behaviors. On the other hand, CoFePc2 (3) and FeMn(OAc)Pc2 (5) had better ORR and OER performance due to the stronger interactions between FeN4 sites and molecular oxygen. The rich redox and spectral responses observed indicate that these complexes are highly promising candidates for future electrocatalytic and electrochromic applications.