Potassium Sensing Calix[4]arene Crown Ethers

Jong Seung Kim, Won Ku Lee, Do Young Ra, Yong Ill Lee, Wang Kyu Choi, Kune Woo Lee, Won Zin Oh

Research output: Contribution to journalArticle

23 Citations (Scopus)

Abstract

1,3-Alternate calix[4]arene crown-5 (1) and corresponding biscrown-5 (2) were synthesized and the complexation behavior with alkali metal ions examined. For both 1 and 2, potassium ion was selectively extracted from aqueous phase into organic phase over other alkali metal ions based on two phase extraction experiment. The complexation ratio between calix[4]arene biscrown-5 (2), in which two crown cavities connect to the calix[4]arene framework by 1,3-alternate fashion and potassium metal ion is found to 1:1 by proton NMR spectroscopy and extraction equilibria. Association constants (log Ka) for 1 and 2 were determined to give 2.51 and 3.49, respectively.

Original languageEnglish
Pages (from-to)464-471
Number of pages8
JournalMicrochemical Journal
Volume59
Issue number3
Publication statusPublished - 1998 Jul 1
Externally publishedYes

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Crown Ethers
Alkali Metals
Metal ions
Potassium
Complexation
Nuclear magnetic resonance spectroscopy
Protons
Ions
calix(4)arene
Experiments

ASJC Scopus subject areas

  • Analytical Chemistry
  • Spectroscopy

Cite this

Kim, J. S., Lee, W. K., Ra, D. Y., Lee, Y. I., Choi, W. K., Lee, K. W., & Oh, W. Z. (1998). Potassium Sensing Calix[4]arene Crown Ethers. Microchemical Journal, 59(3), 464-471.

Potassium Sensing Calix[4]arene Crown Ethers. / Kim, Jong Seung; Lee, Won Ku; Ra, Do Young; Lee, Yong Ill; Choi, Wang Kyu; Lee, Kune Woo; Oh, Won Zin.

In: Microchemical Journal, Vol. 59, No. 3, 01.07.1998, p. 464-471.

Research output: Contribution to journalArticle

Kim, JS, Lee, WK, Ra, DY, Lee, YI, Choi, WK, Lee, KW & Oh, WZ 1998, 'Potassium Sensing Calix[4]arene Crown Ethers', Microchemical Journal, vol. 59, no. 3, pp. 464-471.
Kim JS, Lee WK, Ra DY, Lee YI, Choi WK, Lee KW et al. Potassium Sensing Calix[4]arene Crown Ethers. Microchemical Journal. 1998 Jul 1;59(3):464-471.
Kim, Jong Seung ; Lee, Won Ku ; Ra, Do Young ; Lee, Yong Ill ; Choi, Wang Kyu ; Lee, Kune Woo ; Oh, Won Zin. / Potassium Sensing Calix[4]arene Crown Ethers. In: Microchemical Journal. 1998 ; Vol. 59, No. 3. pp. 464-471.
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