Double‐decker lutetium and europium phthalocyanine composites with reduced graphene oxide as supercapacitor electrode materials

YABAŞ E., Biçer E., DURUKAN M. B., Keskin D., ÜNALAN H. E.

Journal of Organometallic Chemistry, vol.980-981, 2022 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 980-981
  • Publication Date: 2022
  • Doi Number: 10.1016/j.jorganchem.2022.122509
  • Journal Name: Journal of Organometallic Chemistry
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Academic Search Premier, Chemical Abstracts Core, Chimica, Compendex
  • Keywords: Double-decker phthalocyanines, Supercapacitors, Nanocomposites, Lutetium, Europium, METAL-FREE, LU(III), NICKEL, ZINC
  • Middle East Technical University Affiliated: Yes


© 2022 Elsevier B.V.Double‐decker phthalocyanines were synthesized by a classical method with phthalonitrile and lanthanide metal salts, europium and lutetium acetate. Non-covalent double-decker phthalocyanine-reduced graphene oxide (MPc2/rGO) composites were then prepared by simple sonication method. All the phthalocyanines were peripheral tetrasubstituted 5-(3-pyridyl)-1,3,4-oxadiazole. Following spectroscopic and morphological characterisation, fabricated composites were subjected to detailed electrochemical analysis. EuPc2/rGO and LuPc2/rGO composite electrodes showed specific capacitance values of 115 F/g and 86 F/g, respectively. Coulombic efficiency values for those materials were determined as 85% and 74%, respectively, at a significant current density of 5 A/g. Following 5000 cycles, EuPc2/rGO and LuPc2/rGO electrodes retained 93% and 99% of their initial capacitance, respectively. These results demonstrated the significant electrochemical performance of double-decker phthalocyanines and can be certainly extended to other metal salts or other composite formers with double-decker phthalocyanines.