Electrochemistry and spectroelectrochemistry of strongly electron-withdrawing metallated octanitrophthalocyanines

Yu Hong Tse, Nagao Kobayashi, A. B.P. Lever

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)

Abstract

The spectral and electrochemical properties of metallated octanitrophthalocyanines, [M11{(NO2)8pc}] where M = Zn, Cu or Co, were studied by electrochemical and spectroelectrochemical methods as well as electronic absorption and magnetic circular dichroism spectroscopy. Aggregation is observed for several species. The octanitrophthalocyanines are easier to reduce and more difficult to oxidize than most other metallophthalocyanines. Indeed, the first ring-localized reduction potential observed with these phthalocyanine species, is the most positive of the metallated, neutral phthalocyanines in the literature. These data are added to existing Hammett free energy relationship database to extend design protocols for substituted metallophthalocyanines. Optical spectra for several redox series are presented and related to the existing literature.

Original languageEnglish
Pages (from-to)338-354
Number of pages17
JournalCollection of Czechoslovak Chemical Communications
Volume66
Issue number2
DOIs
Publication statusPublished - 2001 Dec 1

Keywords

  • Cobalt
  • Copper
  • Electrochemistry
  • Electronic absorption spectroscopy
  • Metallophthalocyanines
  • Phthalocyanines
  • Substituents effects
  • Zinc

ASJC Scopus subject areas

  • Chemistry(all)

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