Substituents effects to the electrochemical, and in situ spectroelectrochemical behavior of metallophthalocyanines: Electrocatalytic application for hydrogen evolution reaction

Atif Koca*, Mukaddes Özçeşmeci, Esin Hamuryudan

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

35 Citations (Scopus)

Abstract

This study describes the effects of the number of fluoro substituents to the electrochemical, in situ spectroelectrochemical, and electrocatalytic activities of metallophthalocyanines for the hydrogen evolution reaction. Tuning of the number of fluoro groups shifts the redox processes and affects the aggregation tendencies of the complexes. An in situ electrocolorimetric method was applied to investigate the color of the electrogenerated anionic and cationic forms of the complexes. Cobalt phthalocyanines incorporated into Nafion film on a glassy carbon electrode decreases the overpotential of the working electrode for H{thorn} reduction. The number and position of the electron withdrawing substituents and nature of the metal center change the electrocatalytic activities for the hydrogen evolution reaction in aqueous solutions.

Original languageEnglish
Pages (from-to)1623-1633
Number of pages11
JournalElectroanalysis
Volume22
Issue number14
DOIs
Publication statusPublished - Jul 2010

Keywords

  • Chromaticity diagram
  • Electrocatalyst
  • Hydrogen evolution reaction
  • Phthalocyanine
  • Spectroelectrochemistry

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