Monomer and polymer quinoxaline derivatives for cationic recognition

H. Březnová, R. Volf, V. Král, J. L. Sessler, A. C. Try, T. V. Shishkanova*

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    12 Citations (Scopus)

    Abstract

    Monomeric and polymeric 5-nitroquinoxaline derivatives disubstituted in the 2 and 3 positions with 2-pyrrolyl (A), 2-furyl (B) and 2-thienyl (C) groups were prepared and characterized. The substituted 5-nitroquinoxalines were used as active components in poly(vinyl chloride)-membrane and electropolymerized electrodes that were then tested as possible sensors for various cationic species. In contrast to the difurylnitroquinoxaline-based systems, the monomeric and polymeric dipyrrolyl- and dithienylquinoxaline electrodes displayed a good selectivity for Ag+ ions, providing a near-Nernstian response in the 10-5 to 10-2 mol L-1 concentration range. The similar potentiometric behavior displayed by the monomeric and polymeric forms of systems A and C supports the contention that the main binding modes displayed by the monomeric forms are retained in the corresponding polymeric structures.

    Original languageEnglish
    Pages (from-to)1193-1198
    Number of pages6
    JournalAnalytical and bioanalytical chemistry
    Volume375
    Issue number8
    DOIs
    Publication statusPublished - Apr 2003

    Keywords

    • Cationic selectivity
    • Ion-selective electrode
    • Nitroquinoxaline

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