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Issue 10, 2012
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Fluorometric sensor based on bisterpyridine metallopolymer: detection of cyanide and phosphates in water

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Abstract

A poly(ethylene glycol) (PEG) decorated bis(terpyridine) zinc coordination polymer acts as an anion-responsive material in 100% aqueous solution. Depending on the binding and association constants to ZnII, the addition of different anions leads to increased emission intensity and/or a shift of the emission wavelength. The sensor was addressed with a collection of common salts to survey the selectivity of the emission response. Phosphate and cyanide, representing the strongest anion binding to zinc(II), were detected even in the presence of other ions in tap water. Biologically relevant phosphates such as diphosphates and adenosine-5′-triphosphate (ATP) also produced a strong response. Because the binding constants with ZnII are very high, anion concentrations in the range of 10−6 to 10−7 M are sufficient.

Graphical abstract: Fluorometric sensor based on bisterpyridine metallopolymer: detection of cyanide and phosphates in water

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Publication details

The article was received on 26 Jan 2012, accepted on 27 Feb 2012 and first published on 28 Feb 2012


Article type: Paper
DOI: 10.1039/C2AN35119F
Analyst, 2012,137, 2333-2337

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    Fluorometric sensor based on bisterpyridine metallopolymer: detection of cyanide and phosphates in water

    A. Wild, A. Winter, M. D. Hager and U. S. Schubert, Analyst, 2012, 137, 2333
    DOI: 10.1039/C2AN35119F

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