Durable NH4+-sensitive CHEMFET
Zbigniew Brzózka , M Dawgul , D Pijanowska , W Torbicz
AbstractThis paper describes the development of a durable NH4+-sensitive CHEMFET based on various membrane materials incorporating nonactin as the ionophore and (tetrakis-(4-chlorphenyl)borate anions as ionic sites. The ISFETs used in this study have the SiO2 gate covered with an intermediate hydrogel layer of polyHEMA. The CHEMFETs based on the Siloprene showed NH4+ responses with the almost Nernstian slope in the range of activity 10−4–10−1 in the presence of 0.1 M Na+ (log K(NH4, Na)pot=−2.8) and good selectivity even after 22 months of continuous exposure to conditioning electrolyte.
|Journal series||Sensors and Actuators B - Chemical, ISSN 0925-4005|
|Keywords in English||Chemically modified field effect transistors (CHEMFETs), Durable electrochemical sensors, Polymer NH4+-sensitive membranes|
|ASJC Classification||; ; ; ; ; ;|
|Publication indicators||= 21; = 26; = 29.0; : 2014 = 1.679; : 2006 = 2.331 (2) - 2007=3.182 (5)|
|Citation count*||29 (2015-02-12)|
* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.