ISFET‐based ion sensors with photopolymerizable membranes

Abstract

Abstract This minireview summarizes the information on the development and application of ion‐sensitive field‐effect transistors (ISFETs) with UV‐cured polyurethane ion‐selective membranes. Among the advantages of photopolymerizable polymer membranes in comparison with traditional poly(vinyl chloride) are excellent adhesion to a solid sensor surface and very fast curing time. Moreover, processes of membrane deposition and curing are compatible with ISFETs fabrication technology which is important for sensors mass production. The paper presents specific features of photopolymerizable membranes and discusses required precautions in their preparation and treatment. Examples of various analytical applications of this kind of sensors are provided. Finally, the outlook and perspectives of further development in the field of miniature solid‐state ion sensors are given.

Keywords

• Ion sensors
• ISFET
• multi‐sensor chip
• photopolymerizable polyurethane