Electrochemical characterization of poly(acrylamide) membrane coated on a gold disk electrode in acetonitrile

Abstract

The electrochemical behavior of a poly(acrylamide) (PAA) membrane electrode (ME), in which the PAA works as a membrane matrix for use in nonaqueous solutions, was investigated in acetonitrile. It was found that PAA MEs possess properties of microelectrode ensembles (MEEs).For the thin PAA membrane, the electrode behaved similar to a macroelectrode and peak-shaped voltammograms were achieved at low scan rates, while at high scan rates the electrode acted as a microelectrode and sigmoidal-shaped voltammograms were obtained. For the thick PAA membrane electrode, however, voltammograms were sigmoidal-shaped at low scan rates, and at high scan rates the voltammograms became peak-shaped again. Quantitative and semiquantitative analyses of the electrochemical response characteristics of these ensembles were conducted. The results show that the electrochemical behavior of these ensembles is in close agreement with the predictions of established microwell electrochemical theory.

Miniaturized Membrane Sensors for the Determination of Rivastigmine Hydrogen Tartrate

“…Metallic and graphite-based conductors of many geometric shapes have been suggested, such as wire, disc and cylinders. 16,17) These electrodes behave as two interface devices, membrane/electrolyte interface and membrane/metal interface. 18) Coated wire electrodes (CWEs) for some antispasmodic drugs, 19) quaternary ammonium cleaning agents, 20) some cations (silver, 21) palladium 22) ) and some anions 23) (chloride, bromide, iodide, thiocyanate) have been described.…”

Electrochemical Biosensors in Nonaqueous Solutions and Their Applications

“…The electrochemical behavior of PAA membrane in nonaqueous solutions was investigated by voltammetric and chronoamperometric experiments in order to characterize the function of the membrane electrode. 21 The electrochemical behavior of an PAA membrane electrode, which had been worked as a sensing electrode matrix for use in nonaqueous solutions, was investigated in AN. It was found that PAA MEEs possess properties of microelectrode ensembles.…”

“…Electrochemical characterization of PAA membrane coated on a gold disk electrode in AN was carried out, and it was shown that the membrane electrode has array properties. 21 Because of the unique properties of nanoparticles (NP), recent investigations have focused on the development of enzyme-modified NPbased electrochemical biosensors. [22][23][24] The ability of NPs to stabilize enzymes, and to improve the efficiency of immobilized enzymes is extremely useful when preparing biosensors.…”

Development and Application of Ion-Selective Electrodes in Nonaqueous Solutions

“…A study of a potential establishment site has also been reported. 19 Previous papers [20][21][22] are available for understanding certain kinds of chemical and physical properties of a hydrophilic poly(acrylamide) (PAA) membrane.…”

“…In these reports, voltammetric investigations concerning the response time 20 and the micro array arrangement 21 of electrodes and conductometric characterization about the properties of ion-transport across a 22 were described. Studies that aimed to determine the successive complex formation constants between a monovalent cation and solvent molecules using a monovalent cation sensitive glass electrode (Beckman Co. Ltd.) were reported.…”