Investigations on the performance of poly(o-anisidine)/graphene nanocomposites for the electrochemical detection of NADH

Synthesis and characterization of a poly(o-anisidine)–SiC composite and its application for corrosion protection of steel

“…2(b), it can be seen that the main characteristic absorption peaks of POA occur at 3416, 1580, 1498, 1292, 1116 and 811 cm À1 , which can be assigned to the N-H stretching of the benzenoid rings, C]C stretching of the quinoid rings, C]C stretching of the benzenoid rings, C-N stretching of the secondary aromatic amine, C-H in plane bending of the quinoid rings and C-H out of plane bending of the benzenoid rings, respectively. 26,27 Furthermore, the peak at 1210 cm À1 represents the degree of delocalization of electrons on POA. The peak at 1016 cm À1 is assigned to the C-O stretching of the methoxy group, which shows that there are methoxy substituents in the polymer backbone.…”

Selective Electrochemical Sensing of NADH and NAD+ Using Graphene/Tungstate Nanocomposite Modified Electrode

“…Moreover, when we compared the reduction peak currents of NAD + in different pH solutions, it was found that high peak current was observed in pH 7.4 compared to other studied pH at Gr−W based sensor ( Figure S2A ). It might be due to the unfavourable electron transfer reaction between the Gr−W/GCE and NAD + in acidic and basic solutions, since they could deactivate the NAD + [58] . It was also reported that in basic solution, the destruction of pyridine nucleotides and the cleavage process occurred at the nicotinamide ribose linkage which slowly converted to adenylic acid [59] .…”

“…It might be due to the unfavourable electron transfer reaction between the GrÀ W/GCE and NAD + in acidic and basic solutions, since they could deactivate the NAD + . [58] It was also reported that in basic solution, the destruction of pyridine nucleotides and the cleavage process occurred at the nicotinamide ribose linkage which slowly converted to adenylic acid. [59] Similarly, the effects of pH on the oxidation of NADH (50 μM) was also studied and the slope value was 35.6 mV/pH.…”

Simultaneous Electrochemical Determination of Nicotinamide Adenine Dinucleotide and Ascorbic Acid at Carbon Nanotube Electrode

“…Electrochemical detection of NADH and AA is a convenient methodology compared to other analytical methods. [1][2][3][4][5][6][7][8][9][10][11][12][13][14] NADH and AA often coexist in biological samples, and the signals originating from those substances interfere with each other. However, the simultaneous determination of NADH and AA has not been done except in the preliminary work by Karimi-Maleh et al 1 However, they reported the simultaneous determination under low concentrations (<0.2 mM), which caused only small interference between NADH and AA.…”

“…Most research has addressed selective detection in which only one target was quantitatively detected and the other objects were eliminated. In a word, either NADH [2][3][4][5][6][7][8][9][10][11][12][13][14][15] or AA 16,17 was measured in a coexistence sample. In order to conduct the simultaneous determination, both NADH-and AA-selective electrodes would be required.…”