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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 25, Number 3
BKCSDE 25(3)
March 20, 2004 

Epinephrine-Selective Electrode Based on Lipophilic 1,3-Bisbridged Cofacial-calix[6]crown-5-ether
Heekyoung Yeo, Hyo Kyoung Lee, Kye Chun Nam*, Seungwon Jeon*
Epinephrine, Ion-selective electrode, Cofacial-calix[6]crown-5-ether, Catecholamine, Ionophore
The potentiometric response of electrode no. 4 based on 1,3-bisbridged cofacial-calix[6]crown-5-ether (IV) gave a sub-Nernstian (45.0 mV/decade) response and the best detection limit (-log aep = 4.73) towards epinephrine. The responses are decreasing in the order of epinephrine > K+, dopamine > NH4+ > norepinephrine > Na+. It is remarkable that the proposed electrode shows the reasonable selectivity to epinephrine against other catecholamine neurotransmitters (dopamine and norepinephrine) as well as alkali metal ions.
361 - 364
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