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- Title
Monomer and polymer quinoxaline derivatives for cationic recognition.
- Authors
Březnová, H.; Volf, R.; Král, V.; Sessler, J. L.; Try, A. C.; Shishkanova, T. V.
- 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.
- Subjects
MONOMERS; POLYMERS; CATIONS; ELECTRODES; CHEMICALS; MOLECULES
- Publication
Analytical & Bioanalytical Chemistry, 2003, Vol 375, Issue 8, p1193
- ISSN
1618-2642
- Publication type
Article
- DOI
10.1007/s00216-003-1816-2