Overcoming the pH dependency of optical sensors: a pH-independent chloride sensor based on co-extraction

DOI to cite this document:: 10.5283/epub.21005

Huber, Christian ; Werner, Tobias ; Krause, Christian ; Wolfbeis, Otto S. ; Leiner, Marc J. P.

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Date of publication of this fulltext: 06 Jun 2011 13:07

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Abstract

A chloride-selective optode is presented which is based on a polymer-stabilized emulsion system which consists of a hydrogel into which plasticizer droplets are incorporated containing a neutral chloride-selective ionophore. A solvatochromic cationic fluorescent dye is located in the hydrogel. When the ionophore extracts chloride out of the aqueous solution into the plasticizer droplets, the ...