Potentiometric Sensors Based on Macrocyclic Ligands: 1,8-Naphthyridine and 1,10-Phenanthroline Derivatives
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The synthesis of some macrocyclic compounds based on 1,8-naphthyridine and 1,10-phenanthroline with rings containing four and five oxygen atoms is reported. These compounds were tested for cation selectivity in poly(vinyl chloride)-based potentiometric sensors. Nernstian esponse was observed towards the potassium ion but with low discrimination for potassium in the presence of other cations. Dimethyl 4-octyloxy-1,10-phenanthroline-2,9-dicarboxylate, a precursor to one of the macrocyclic series, showed a high preference for divalent cations such as Zn2+, Ba2+, Cu2+ and Co2+. .
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1973 ◽
Vol 44
(3)
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pp. 425-430
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2008 ◽
Vol 53
(5)
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pp. 2362-2368
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1995 ◽
Vol 302
(2-3)
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pp. 241-248
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