Beilstein J. Org. Chem.2009,5, No. 59, doi:10.3762/bjoc.5.59
+-selective ionophores in ion-selective electrodes evaluated by electromotive force measurements of polymer membrane electrodes. The tweezer-like ionophores 6–8 showed excellent extraction ability towards Ag+ and Hg2+.
Keywords: calix[4]arenes; extractants; mercury; sensors; silver; telluropodantether
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Graphical Abstract
Scheme 1:
Synthesis and structures of calix[4]arenes 6–8; 3, 6: n = 2; 4, 7: n = 3; 5, 8: n = 5.