Spectroelectrochemical behavior of N-confused dioxohexaphyrins

Ildemar Mayer, Kiyohisa Nakamura, Alagar Srinivasan, Hiroyuki Furuta, Henrique E. Toma, Koiti Araki

    Research output: Contribution to journalArticlepeer-review

    14 Citations (Scopus)


    Doubly N-confused dioxohexaphyrins were characterized by cyclic voltammetry and spectroelectrochemistry in the -2.5 to +2.0 V vs Ag | Ag+ (0.10 M, in CH3CN) range. Six reversible monoelectronic processes were found suggesting that the rich electrochemistry of porphyrin systems was preserved in that expanded macrocycle. However, the electronic and electrochemical properties of the free-base, Cu(II) and Ni(II) species were shown to be sensitive to the coordinated transition metal ions and solvent revealing a quite complex behavior, probably reflecting the higher flexibility and strong conformational effects on the energy levels and stability of those complexes.

    Original languageEnglish
    Pages (from-to)813-820
    Number of pages8
    JournalJournal of Porphyrins and Phthalocyanines
    Issue number12
    Publication statusPublished - 2005

    All Science Journal Classification (ASJC) codes

    • General Chemistry


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