Selective transport of anions across liquid membranes using the ferrocenium/ferrocene redox couple
Source abstract
Abstract
Communication: Anions can be selectively transported across a bulk liquid membrane by the 1‐hexadecylferrocenium ion through a process driven by a chemically generated redox potential gradient. The liquid membrane, a solution in dichloromethane, acts as a filter for anions, being permeable to perchlorate ions and impermeable to choride ions. The alkyl substitution of the ferrocenium ion serves to confine the ion to the membrane phase.
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Research context
OpenAlex topics: Electrochemical Analysis and Applications · Molecular Sensors and Ion Detection · Chemical Reaction Mechanisms
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References (10)
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6. In a further experiment [Fe11(CN)6]4⊖in the ARP was 0.10 mol dm−3and Fe3⊖in the ASP was 0.01 mol dm−3: the Fe3⊖concentration was observed to decrease with time thus demonstrating that electrons are transported from the ARP to the ASP.
7. 10.1021/ac60217a02810.1021/ac60217a028 ↗
8. [Fe11(CN)6]4⊖and [Fe111(CN)6]3⊖interfere in the Cl⊖determination by a chloride‐selective electrode (Orion Model 94‐17 B). The interference can be eliminated by adding an excess of Fe2⊖. Calibration experiments showed that in the filtered solution the electrode gives a linear response over the 5 × 10−5>[Cl⊖] > 5 × 10−2mol dm−3range.
9. 10.1016/0022-1902(81)80451-410.1016/0022-1902(81)80451-4 ↗
10. 10.1021/ja00189a00810.1021/ja00189a008 ↗