Investigation of potential-sensitive fluorescent dyes for application in nitrate sensitive polymer membranes

DOI to cite this document:: 10.5283/epub.21083

Mohr, Gerhard J. ; Lehmann, Frank ; Östereich, Ralf ; Murkovic, Ivana ; Wolfbeis, Otto S.

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Date of publication of this fulltext: 07 Jun 2011 11:21

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Abstract

The applicability of various potential-sensitive dyes (PSD) for optical sensing of anions is reported. Specifically, nitrate-responsive polymer membranes have been developed which are composed of a plasticized polymer, an anion exchange catalyst, and a fluorescent dye. On exposure to nitrate, the fluorescence intensity of such membranes increases, while the wavelengths of the excitation and ...