Abstract
Five novel 1,3-alternate calix[4]azacrown ethers having 2-picolyl, 3-picolyl, and benzyl unit on the nitrogen atom were synthesized and used as ionophores for transition metal-selective polymeric membrane electrodes. The electrode based on 2-picolyl armed 1,3-alternate calix [4] azacrown ether exhibited Nernstian response toward copper (II) ion over a concentration range (10-4.5 M-10-2.5 M). The detection limit was determined as 10-5 M in pH 7 and the selectivity coefficients for possible interfering cations were evaluated. Anions in the sample solution strongly affected the electrode response.
Original language | English |
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Pages (from-to) | 297-304 |
Number of pages | 8 |
Journal | Talanta |
Volume | 55 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2001 Aug 30 |
Externally published | Yes |
Bibliographical note
Funding Information:The authors wish to acknowledge the financial support of a Grant (No. 2000-1-12300-001-3 for J. S. Kim and No. 1999-2-121-001-5 for H. Kim) from the Basic Research Program of the Korea Science & Engineering Foundation and the Center for Molecular Catalysis of Seoul National University.
Keywords
- Azacrown ether
- Calix[4]arene
- Ion-selective electrode
- Potentiometry
- Transition metal
ASJC Scopus subject areas
- Analytical Chemistry