Synthesis and EPR studies of a near infrared absorbing tetrakis(2-naphthoxy)vanadylphthalocyanine

Özçeşmeci İ., Yerli Y., Okur A. I., Gül A.

INORGANIC CHEMISTRY COMMUNICATIONS, vol.12, no.7, pp.625-627, 2009 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 12 Issue: 7
  • Publication Date: 2009
  • Doi Number: 10.1016/j.inoche.2009.05.006
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.625-627
  • Yıldız Technical University Affiliated: No


Vanadylphthalocyanine with four naphthoxy pendant groups on the periphery was prepared by cyclotetramerization of 4-(2-naphthoxy)phthalonitrile. The new compound was characterized by elemental analyses, Mass, IR and UV-Vis spectral data. The electronic spectra exhibit an intense absorption peak at 703 nm indicating the C-4v symmetry of VOPc. VO2+ ion in this structure was studied using electron paramagnetic resonance (EPR) technique at room temperature. The covalent bonding parameter for VO2+ ion and Fermi contact term were calculated using the principal axis values of the g and hyperfine splitting obtained from powder EPR spectrum. (C) 2009 Elsevier B.V. All rights reserved.