Durable NH4+-sensitive CHEMFET

Zbigniew Brzózka , M Dawgul , D Pijanowska , W Torbicz

Abstract

This 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.
Author Zbigniew Brzózka (FC / IBC / DM)
Zbigniew Brzózka,,
- Department Of Microbioanalytics
, M Dawgul - [Institute of Biocybernetics and Biomedical Engineering of the Polish Academy of Sciences]
M Dawgul,,
-
- Institute of Biocybernetics and Biomedical Engineering of the Polish Academy of Sciences
, D Pijanowska - [Institute of Biocybernetics and Biomedical Engineering of the Polish Academy of Sciences]
D Pijanowska,,
-
- Institute of Biocybernetics and Biomedical Engineering of the Polish Academy of Sciences
, W Torbicz - [Institute of Biocybernetics and Biomedical Engineering of the Polish Academy of Sciences]
W Torbicz,,
-
- Institute of Biocybernetics and Biomedical Engineering of the Polish Academy of Sciences
Journal seriesSensors and Actuators B - Chemical, ISSN 0925-4005
Issue year1997
Vol44
No1–3
Pages527-531
Keywords in EnglishChemically modified field effect transistors (CHEMFETs), Durable electrochemical sensors, Polymer NH4+-sensitive membranes
ASJC Classification2505 Materials Chemistry; 2208 Electrical and Electronic Engineering; 2506 Metals and Alloys; 2508 Surfaces, Coatings and Films; 3104 Condensed Matter Physics; 3105 Instrumentation; 2504 Electronic, Optical and Magnetic Materials
DOIDOI:10.1016/S0925-4005(97)00160-3
URL http://www.sciencedirect.com/science/article/pii/S0925400597001603
Score (nominal)40
Score sourcejournalList
Publication indicators WoS Citations = 21; Scopus Citations = 26; GS Citations = 29.0; Scopus SNIP (Source Normalised Impact per Paper): 2014 = 1.679; WoS Impact Factor: 2006 = 2.331 (2) - 2007=3.182 (5)
Citation count*29 (2015-02-12)
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* presented citation count is obtained through Internet information analysis and it is close to the number calculated by the Publish or Perish system.
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