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Issue 28, 2010
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Amplification of anion sensing by disulfide functionalized ferrocene and ferrocene-calixarene receptors adsorbed onto gold surfaces

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Abstract

A disulfide functionalized bis-ferrocene urea acyclic receptor and disulfide functionalized mono- and bis-ferrocene amide and urea appended upper rim calix[4]arene receptors were prepared for the fabrication of SAM redox-active anion sensors. 1H NMR and diffusive voltammetric anion recognition investigations revealed each receptor to be capable of complexing and electrochemically sensing anions via cathodic perturbations of the respective receptor's ferrocene/ferrocenium redox couple. SAMs of a ferrocene urea receptor 3 and ferrocene urea calixarene receptor 17 exhibited significant enhanced magnitudes of cathodic response upon anion addition as compared to observed diffusive perturbations. SAMs of 17 were demonstrated to sense the perrhenate anion in aqueous solutions.

Graphical abstract: Amplification of anion sensing by disulfide functionalized ferrocene and ferrocene-calixarene receptors adsorbed onto gold surfaces

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Publication details

The article was received on 28 Mar 2010, accepted on 12 May 2010 and first published on 15 Jun 2010


Article type: Paper
DOI: 10.1039/C0DT00217H
Citation: Dalton Trans., 2010,39, 6532-6541
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    Amplification of anion sensing by disulfide functionalized ferrocene and ferrocene-calixarene receptors adsorbed onto gold surfaces

    D. P. Cormode, A. J. Evans, J. J. Davis and P. D. Beer, Dalton Trans., 2010, 39, 6532
    DOI: 10.1039/C0DT00217H

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