A Novel Poly(Glutaraldehyde-co-Pyrrole)/Horseradish Peroxidase Composite Film Electrode

Electrochemical, continuous-flow determination ofp-benzoquinone on a gold nanoparticles poly(propylene-co-imidazole) modified gold electrode

“…This result is consistent with our previous report where we calculated a lower apparent Michaelis-Menten constant for p-benzoquinone in comparison to catechol. [33] In another report, lactoperoxidase and chloroperoxidase electrodes provided higher responses for phenol and catechol, and lower responses for other phenolics in comparison to a horseradish peroxidase electrode. [9] Analytical figures of merit p-Benzoquinone detection was performed at the flow rate of 1 mL/min with an applied potential of À 50 mV.…”

Vinylferrocene copolymers based biosensors for phenol derivatives

“…As mentioned earlier, Poly(glutaraldehyde-copyrrole) was successfully synthesized previously: active aldehyde groups were incorporated in the conductive polymeric backbone resulting in a conductive composite film electrode using the electropolymerization technique. 32 More convenient conditions for electron transfer could be possible for electrode A, since the chemically bonded enzyme is closer to the surface of electrode A than the entrapped form of enzyme in the polymeric film. Hence, the LOD values of electrode A were lower than those of electrode B owing to the facilitated electron transfer mechanism through the composite film of electrode A. P(GMA-co-VFc) was previously reported for three different biosensor applications.…”

“…We have recently reported that a new copolymer between glutaraldehyde and pyrrole was synthesized through the electropolymerization process. 32 It is known that P(GMA 85 -co-VFc 15 ) contains pendant epoxy groups which are capable of binding to enzyme directly. However, when P(GMA 85 -co-VFc 15 )/Tyr was used as a working electrode, no reproducible signals were obtained to construct a calibration curve for accurate measurement.…”

“…This result can be attributed to the efficient electron transfer property of PGA since the polymeric glutaraldehyde contains conjugated aldehydes, which are electroactive centers of PGA. 32 In this study, no enzyme leakage was determined through the experimental procedure as a result of chemical bonding between enzyme and copolymer, and a stable enzyme-based working electrode was obtained. …”

“…Poly(glutaraldehyde) (PGA) solution was prepared according to the procedure given previously. 32 Briefly, 2 mL of 25% glutaraldehyde and 2 mL of 0.1 mol L −1 NaOH were mixed in 10 mL of distilled water. PGA was obtained by stirring the solution at 600 rpm for 30 minutes at pH 10.…”