Chem. J. Chinese Universities ›› 1993, Vol. 14 ›› Issue (5): 630.

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Syntheses of Crown Ethers (ⅩⅪ)——Syntheses of Polyether of Open Chain Amides and Properties of Its Calcium Ion Selective Electrodes

GUO Bin1, XU Wei1, LIU Dong1, HUANG Zai-Fu1, CHEN Liao-Rong2, LUO Bao-Sheng2   

  1. 1. Dept, of Eevironmental Science, Wuhan Univ., Wuhan, 430072;
    2. Center of Analysis Measurement, Wuhan Univ., Wuhan, 430072
  • Received:1991-12-27 Revised:1993-02-03 Online:1993-05-24 Published:1993-05-24

Abstract: Eight ligands(Ⅰ -Ⅷ), seven of which were new compounds, were synthesized in this paper.Compounds Ⅰ - Ⅶ are open chain amides and Ⅷ, a macrocyclic lactam.Their structures were determined by IR, 1H NMR, MSand elemental analysis.Calcium ion selective electrodes based on these new neutral carriers were studied, among which a superior carrier was found.Satisfactory results were obtained by using this electrode to determine the calcium ion in human serum.The limit of detection is lower than intracellular free calcium ion activity (1.4×10-7 mol/L) in microelectrode, and were better than electrodes on other crown ethers including ETH1001 and ETH129.

Key words: Crown ether, Open chain amide, Neutral carrier, Calcium ion selective electrode

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