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Issue 4, 2005
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Ditopic redox-active polyferrocenyl zinc(ii) dithiocarbamate macrocyclic receptors: synthesis, coordination and electrochemical recognition properties

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Abstract

The synthesis of a range of ditopic polyferrocenyl zinc(II) dithiocarbamate macrocyclic receptors containing ferrocene groups on the macrocycle's periphery and/or as part of the cyclic cavity is reported. The assemblies have been characterised by a range of spectroscopic techniques, electrochemical studies and in two cases by X-ray structure determination. The ability of these host systems to bind and sense electrochemically anionic guest species, isonicotinate and benzoate, and neutral 4-picoline guest was examined by 1H NMR and cyclic voltammetric titration studies. The strongest association was found between the isonicotinate anion and a dinuclear zinc(II) receptor whose macrocyclic cavity is of complementary size to complex this bidentate guest species in a cooperative manner. Cyclic voltammetric studies demonstrated that all receptors can electrochemically sense the binding of isonicotinate and benzoate via significant cathodic perturbations of the respective ferrocene redox couple.

Graphical abstract: Ditopic redox-active polyferrocenyl zinc(ii) dithiocarbamate macrocyclic receptors: synthesis, coordination and electrochemical recognition properties

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Article information


Submitted
02 Nov 2004
Accepted
22 Dec 2004
First published
20 Jan 2005

Dalton Trans., 2005, 774-781
Article type
Paper

Ditopic redox-active polyferrocenyl zinc(II) dithiocarbamate macrocyclic receptors: synthesis, coordination and electrochemical recognition properties

W. W. H. Wong, D. Curiel, S. Lai, M. G. B. Drew and P. D. Beer, Dalton Trans., 2005, 774
DOI: 10.1039/B416851H

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