Ion-selective electrodes

US5132345A · kind A · utility

Inventors

• Stephen J. Harris · Bloomfield, US
• Michael A. McKervey · Magherafelt, GB
• Gyula Svehla · Carrigaline, IE
• Dermot Diamond · Blanchardstown, IE

Key dates

• Filing date: Dec 10, 1990
• Grant date: Jul 21, 1992
• Expiry date: Dec 10, 2010

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N27/333
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

An ion-selective polymeric membrane for an electrochemical sensor for use in analytical chemistry, comprising PA0 a) a supporting matrix e.g. of PVC, and PA0 b) an ionophore selected from calixarene or oxacalixarene derivatives of the formula IV ##STR1## wherein n+m=3-8; PA1 m=0-8; PA1 n=0-8; PA1 a, which may be the same or different on each aryl group, is 0 or 1; PA1 R.sup.2 is alkyl, aryl, alkaryl, alkoxy, alkoxyalkoxy, aryloxy, alkaryloxy, alicyclic, alkylthio, arylthio, alkarylthio, or a substituted derivative thereof; PA1 R.sup.3 is --H, alkyl or alkenyl; PA1 X is --OH or a group containing an acrylate or methacrylate functional group; PA1 provided that when X is --OH, n is at least 1/2(n+m); PA1 and provided that when m=0, n=4, a=0 and R.sup.3 is alkyl or allyl, R.sup.2 is not alkoxy having 4 or more carbon atoms in the alkyl group; PA1 and provided that when m=0, n=4, a=0 and R.sup.3 is t-butyl, R.sup.2 is not methoxy or ethoxy; or of the formula V ##STR2## wherein R.sup.4 is alkyl; or polymers of those compounds of the formula IV in which X is a group containing an acrylate or methacrylate group. New compounds in which R.sup.2 is --SCH.sub.2 CH.sub.3 are described. Selectiv…