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Modified electrodes for electrochemical sensors
Author(s) -
Wang Joseph
Publication year - 1991
Publication title -
electroanalysis
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.574
H-Index - 128
eISSN - 1521-4109
pISSN - 1040-0397
DOI - 10.1002/elan.1140030404
Subject(s) - analyte , electrode , electrochemistry , materials science , nanotechnology , surface modification , chemically modified electrode , chemical engineering , chemistry , working electrode , chromatography , engineering
Chemically modified electrodes exhibit unique behavior that can greatly benefit electrochemical sensing. In this article we review the development and applications of modified electrodes for chemical sensing. After a general introduction, different strategies for surface modification, as employed in chemical sensing, are discussed in detail. Special attention is given to permselective coatings, which offer controlled access at the sensor surface or the surface immobilization of biological entities that specifically recognize the analyte. Better, understanding of these modified electrodes is achieved by using high resolution surface characterization techniques. Future prospects are evaluated.