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Lookup NU author(s): Sridhar Govindarajan,
Emeritus Professor Calum McNeilORCiD
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The selectivity of glutamate microdisc biosensors coated with poly(o-phenylenediamine) (PPD) as the interference-rejecting layer against ascorbic acid was observed to be very low. Enhancement in the selectivity was noticed when the electropolymerization potential for the polymerization of the o-phenylenediamine monomer was decreased from 0.65V to 0.40V vs. Ag/AgCl. The selectivity coefficient increased from -34.933.75% (n=5) to 53.054.33% (n=3). Decreasing the polymerization potential decreases the rate of formation of the polymer and improves the compactness of the polymer layer formed, thereby increasing the selectivity of the electrodes.
Author(s): Govindarajan S, McNeil CJ
Publication type: Article
Publication status: Published
Journal: Analytical Letters
ISSN (print): 0003-2719
ISSN (electronic): 1532-236X
Publisher: Taylor & Francis Inc.
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