Electrochemical and spectroelectrochemical characterization of newly synthesized manganese, cobalt, iron and copper phthalocyanines

Arici M., Arican D., Ugur A. L., ERDOĞMUŞ A., KOCA A.

ELECTROCHIMICA ACTA, vol.87, pp.554-566, 2013 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 87
  • Publication Date: 2013
  • Doi Number: 10.1016/j.electacta.2012.09.045
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.554-566
  • Keywords: Non-peripheral substitution, Thiol-substituted metallophthalocyanines, Iron, Manganese, Electrochemistry, Spectroelectrochemistry, IN-SITU, SUBSTITUTED PHTHALOCYANINES, ZINC PHTHALOCYANINES, METAL-FREE, ELECTROCATALYTIC ACTIVITY, HYDROGEN-PRODUCTION, CARBON-DIOXIDE, COMPLEXES, REDUCTION, ELECTROREDUCTION
  • Yıldız Technical University Affiliated: Yes


Manganese, cobalt, iron, and copper phthalocyanines, tetra-substituted with 3,4-(dimethoxyphenylthio) moieties at peripheral positions, were synthesized and characterized by FT-IR, mass spectroscopy, and electronic spectroscopy. Electrochemical and spectroelectrochemical measurements exhibit that while copper phthalocyanine gives only ring-based electron transfer reactions, incorporating redox active metal centers, Co-II, (FeAc)-Ac-III, and (MnAc)-Ac-III, into the phthalocyanine core extends the redox richness of the phthalocyanine ring with the metal-based reduction and oxidation couples of the metal centers in addition to the common phthalocyanine ring-based electron transfer processes. In situ electrocolorimetric measurements of the complexes allow quantification of color coordinates of the each electrogenerated anionic and cationic redox species. Presence of O-2 in the electrolyte system influences the redox couples of the complexes due to the interaction between O-2 and metallophthalocyanines having redox active metal center. (C) 2012 Elsevier Ltd. All rights reserved.