Sensing of Aqueous Phosphates by Polymers with Dual Modes of Signal Transduction

A new approach to sensing of aqueous phosphate-related anions based on chromogenic conductive polymers is demonstrated. This method utilizes synergy between low-level p-doping in a polythiophene polymer and hydrogen bonding to increase anion-sensor affinity. These chromogenic conductive polymers sho...

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Veröffentlicht in:	Journal of the American Chemical Society 2004-04, Vol.126 (15), p.4752-4753
Hauptverfasser:	Aldakov, Dmitry, Anzenbacher, Pavel
Format:	Artikel
Sprache:	eng
Schlagworte:	Analytical chemistry Biosensing Techniques - methods Chemistry Exact sciences and technology General, instrumentation Hydrogen Bonding Organophosphates - analysis Phosphates - analysis Polymers - chemical synthesis Polymers - chemistry Potentiometry - methods Quinoxalines - chemical synthesis Quinoxalines - chemistry Thiophenes - chemistry
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Beschreibung
Zusammenfassung:	A new approach to sensing of aqueous phosphate-related anions based on chromogenic conductive polymers is demonstrated. This method utilizes synergy between low-level p-doping in a polythiophene polymer and hydrogen bonding to increase anion-sensor affinity. These chromogenic conductive polymers show anion-specific changes both in color and in conductivity upon increasing concentration of anions, thus providing two independent modes of signal transduction.
ISSN:	0002-7863 1520-5126
DOI:	10.1021/ja039934o