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Title of Journal: Microchim Acta

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Abbravation: Microchimica Acta

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Springer Vienna

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DOI

10.1007/jhep02(2012)027

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1436-5073

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New polyaryleneethynylenes as optical active pla

Authors: Dario Compagnone Antonella Ricci Michele Del Carlo Marco Chiarini Alessia Pepe Claudio Lo Sterzo
Publish Date: 2010/03/21
Volume: 170, Issue: 3-4, Pages: 313-319
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Abstract

Newly synthesized polyaryleneethynylenes carrying substituents such as leucine glycine and methionine have been prepared and tested for their ability to bind HgII ions Binding resulted in strong quenching of the fluorescence emission of all the compounds tested A comparative study of the quenching efficiency by HgII was then carried out in a flow injection system Quenching efficiency was amplified in the polymeric material because of the socalled “wire effect” that is observed with organic conducting polymers Under the experimental conditions used detection limits are in the 50–100 ppb range The selectivity for HgII is remarkable in that a series of other divalent cations did not give any measurable effect a slight response being observed for methylmercury only The materials hold promise for selective determination of HgII ion

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