Synthesis, electrochemical and spectroelectrochemical properties of peripherally tetra-imidazole substituted metal free and metallophthalocyanines

Akcay H. T., Bayrak R., DEMİRBAŞ Ü., KOCA A., KANTEKİN H., DEĞİRMENCİOĞLU İ.

DYES AND PIGMENTS, vol.96, no.2, pp.483-494, 2013 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 96 Issue: 2
  • Publication Date: 2013
  • Doi Number: 10.1016/j.dyepig.2012.09.005
  • Journal Name: DYES AND PIGMENTS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.483-494
  • Keywords: Synthesis, Phthalocyanine, Imidazole, Electrochemistry, Spectroelectrochemistry, Soluble, IN-SITU, ELECTROCATALYTIC ACTIVITY, HYDROGEN-PRODUCTION, CARBON-DIOXIDE, THIN-FILMS, PHTHALOCYANINES, COBALT, MANGANESE, COMPLEXES, REDUCTION
  • Recep Tayyip Erdoğan University Affiliated: Yes

Abstract

The synthesis and characterization of novel organosoluble peripherally tetra imidazole substituted metal-free (4), zinc(II) (5), nickel(II) (6), cobalt(II) (7), lead(II) (8) and oxo-titanium(IV) (9) phthalocyanines are described for the first time in this study. Electrochemical and spectroelectrochemical measurements exhibit that while copper phthalocyanine gives only ring-based electron transfer reactions, incorporating redox active metal centers, Co(II), and Ti(IV)OPc, 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. (C) 2012 Elsevier Ltd. All rights reserved.