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- W2079349637 abstract "A voltammetric ion-channel sensing for phosphate based on gold electrodes modified with the self-assembled monolayers of a bis-thiourea receptor was developed to detect phosphate. The working principle of this voltammetric sensor conceptually mimics that of ligand gated ion-channel proteins, as to chemically stimulated changes in membrane permeability. The response to analytes is based on the change in electron transfer rate constant of the redox reaction of [Fe(CN)6]4−/3− marker, before and after binding of phosphate to the receptor on the electrode surface; where the electrostatic repulsion between a phosphate–receptor complex and the marker induced the decrease in the rate constant. In a solution of pH 7.0, a high selectivity was observed for phosphate and the sensor was virtually insensitive at all to many of other anions, such as SO42−, AcO−, NO3−, and Cl−. The sensor response was obtained with phosphate concentrations above 5.0×10−4 M using cyclic voltammetry and differential pulse voltammetry." @default.
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- W2079349637 date "2003-03-01" @default.
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- W2079349637 title "Voltammetric detection of inorganic phosphate using ion-channel sensing with self-assembled monolayers of a hydrogen bond-forming receptor" @default.
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- W2079349637 doi "https://doi.org/10.1016/s0956-5663(02)00177-x" @default.
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