Calixazacrown ethers for copper(II) ion-selective electrode

Su Jeong Park, Ok Jae Shon, Jeong Ah Rim, Jae Kwang Lee, Jong Seung Kim, Hakhyun Nam, Hasuck Kim

Research output: Contribution to journalArticlepeer-review

59 Citations (Scopus)


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 languageEnglish
Pages (from-to)297-304
Number of pages8
Issue number2
Publication statusPublished - 2001 Aug 30
Externally publishedYes

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.


  • Azacrown ether
  • Calix[4]arene
  • Ion-selective electrode
  • Potentiometry
  • Transition metal

ASJC Scopus subject areas

  • Analytical Chemistry


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