Cesium selective electrodes based on novel double flexible spacers bridged biscalix[4]arenes

Two novel double flexible spacers brideged biscalix[4]arenes 25,25′,27,27′-bis(1,3-dioxypropane)-bis(5,11,17,23-p-tert-tetrabutylcalix[4]arene-26,28-diol) (1) and 25,25′,27,27′-bis(1,4-dioxybutane)-bis(5,11,17,23-p-tert-tetrabutylcalix[4]arene-26,28-diol) (2) have been evaluated as cesium ion-select...

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Bibliographic Details
Published in:Analytica chimica acta 2001-11, Vol.447 (1-2), p.41-46
Main Authors: Chen, Langxing, Ju, Hongfang, Zeng, Xianshun, He, Xiwen, Zhang, Zhengzhi
Format: Article
Language:English
Subjects:
Analytical chemistry
Bridged biscalixarenes
Cesium
Chemistry
Electrochemistry
Electrodes: preparations and properties
Exact sciences and technology
General and physical chemistry
General, instrumentation
Ion selective electrodes
Ion-selective electrode
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Summary:Two novel double flexible spacers brideged biscalix[4]arenes 25,25′,27,27′-bis(1,3-dioxypropane)-bis(5,11,17,23-p-tert-tetrabutylcalix[4]arene-26,28-diol) (1) and 25,25′,27,27′-bis(1,4-dioxybutane)-bis(5,11,17,23-p-tert-tetrabutylcalix[4]arene-26,28-diol) (2) have been evaluated as cesium ion-selective ionophore in polymeric membrane electrodes. The electrodes all give the good Nernstian response of 51mV per decade for Cs+ in the concentration range from 1×10−1 to 1×10−5M and good selectivity. The potentiometric selectivity of Cs+-ISEs based on 1 and 2 for cesium ion over other alkali metal ions, alkaline-earth metal ions and NH4+ have been assessed. Effects of membrane composition and pH on the response of Cs+-ISEs based on 1 and 2 were also discussed.
ISSN:0003-2670
1873-4324
DOI:10.1016/S0003-2670(01)01300-9