Reference electrode for chemical sensors

US5182005A · kind A · utility

Assignee

• BASF SE

Inventors

• Stefan Schwiegk · Mainz, DE
• Klemens Mathauer · Ludwigshafen, DE
• Gerhard Wegner · Mainz, DE
• Bernd F. W. Hoffmann · Rheinstetten, DE
• Albrecht Vogel · Oberkochen, DE

Key dates

• Filing date: May 24, 1991
• Grant date: Jan 26, 1993
• Expiry date: May 24, 2011

Classification

• Technology area (CPC G): Physics
• CPC primary: G01N2001/045
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

The invention relates to a reference electrode for chemical sensors based on ion-selective field-effect transistors (CHEMFETs) in an electrolyte/insulator/semiconductor system. The reference electrode is essentially composed of a polyglutamate-coated insulator/semiconductor substrate or of a polyglutamate-coated phthalocyaninato-polysiloxane polymer film applied to an insulator/semiconductor substrate.