Abstract
This paper describes the application of an electropolymerized film of poly(bis(2-aminophenyl)-2,8,12,18-tetraethyl-3,7,13, 17-tetramethylporphyrin) and its metalloderivative for determination of amino acids. A remarkable selectivity for cysteine (log K potCys/Amino acids = 10−2–10−3) has been found. The potentiometric response to sulfur-containing amino acids is discussed and compared with selectivity data for PVC-membranes based on metallotetraphenylporphyrins.
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Volf, R., Shishkanova, T.V. & Král, V. Novel Potentiometric Sensor for Determination of Cysteine Based on Substituted Poly(diphenylporphyrins and Metalloporphyrins. Journal of Inclusion Phenomena 35, 111–122 (1999). https://doi.org/10.1023/A:1008106717030
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DOI: https://doi.org/10.1023/A:1008106717030