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Syntheses and Properties of New Pendant‐armed Calix[4]arene Derivatives as Cesium Selective Ionophore
Author(s) -
Xing YanJun,
Zhou ZhiXian,
Wu YangJie
Publication year - 2001
Publication title -
chinese journal of chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.28
H-Index - 41
eISSN - 1614-7065
pISSN - 1001-604X
DOI - 10.1002/cjoc.20010190209
Subject(s) - chemistry , ionophore , caesium , calixarene , alkali metal , selectivity , alkaline earth metal , ion selective electrode , metal , inorganic chemistry , extraction (chemistry) , medicinal chemistry , organic chemistry , molecule , calcium , catalysis
Two new pendant‐armed calix[4]arene derivatives 5 and 6 have been synthesized. The study of alkali metal picrates extraction indicates that both compounds show preference of cesium cation, compound 6 in 1,3‐alternate conformation has better extractibility for Cs + than compound 5. The coordination behavior of compound 6 with cesium cation was studied by 1 H NMR spectroscopy. The Cs + selective electrode based on compound 6 exhibits a linear, near Nernstian response characteristics, the slope is 56.4 mV/decade in me concentration range of 10 −4 —10 −1 mol/L, the selectivity coefficient (log K pot Cs.Na ) is −3.39.
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