Comparative study of the response of membrane electrodes based on calix[6]arene and calix[8]arene derivatives to organic ammonium ions. |
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| Authors: | Takashi Katsu Nozomi Okaki Kiyoyuki Watanabe Kiyoka Takaishi Hirochika Yokosu |
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| Affiliation: | Faculty of Pharmaceutical Sciences, Okayama University, Okayama 700-8530, Japan. katsu@pharm.okayama-u.ac.jp |
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| Abstract: | p-tert-Butylcalix[8]arene-octaacetic acid octaethyl ester and calix[8]arene-octaacetic acid octaethyl ester well recognized 2-phenylethylamine and phenylalanine methyl ester compared with the corresponding calix[6]arene derivatives. Moreover, the calix[8]arene derivatives, especially one having tert-butyl groups, gave better selectivity against biologically active amines having a complicated structure, such as norephedrine. We considered the interaction between calixarenes and organic ammonium ions from the viewpoint of molecular symmetries. |
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