Carboxylic acid, cyclic voltammogram

Figure 3. Cyclic voltammograms of 3-methylpyrrole-4-carboxylic acid in acetonitrile + 0.1 MEt4NC104.58 (Reprinted from P. G. Pickup, Poly-(3-methylpyrrole-4-carbox-ylic acid) An electronically conducting ion-exchange polymer, J. Electroanal. Chem. 225, 273-280, 1987, with kind permission from Elsevier Sciences S.A.)...

The cyclic voltammograms of the GOx/CNT-modified GC electrodes in phosphate buffer solution (pH 7.4) show two pairs of redox peak currents. The first pair of peaks (Ei/2 = 0.09 V vs Ag AgCl) is attributed to the carboxylic acid groups in CNTs, while... 

Fig. 24.3. Cyclic voltammogram of ferrocene carboxylic acid at a bare carbon electrode (—), a poly(o-phenylenediamine)-coated working electrode (...) and at sonicated poly(o-phenylenediamine)-coated carbon working electrode (---).

Figure 3-31. Cyclic voltammograms corresponding to the photoswitchable bioelectrocatalyzed oxidation of glucose, 50 mM, in the presence of ferrocene carboxylic acid, (21), 5x 0 M, as diffusional electron mediator (a) and (c) In the presence of the SP-GOx monolayer electrode generated by the irradiation of the electrode A, > 475 run. (b) and (d) In the presence of the MRlT-GOx monolayer electrode generated by the illumination of the electrode with filtered light 320 nm < A < 380 nm. Inset cychc photoswitchable ON and OFF amperometric responses of the functionalized enzyme monolayer upon the light-induced isomerization of the interface between the SP GOx and MRI I GOx, respectively. Reproduced with permission from ref. 88. Copyright 1997 American Chemical Society.

Figure 14-7. Cyclic voltammogram demonstrating mediated electron transfer from glucose oxidase to a platinum electrode with ferrocene carboxylic acid, a) 2mM ferrocene carboxylic acid b) +10 mg glucose oxidase c) +30 mg glucose. —100 to +700 mV vs. SCE 5 mV s 0,1 M phosphate buffer (ph 7.4) with 0.5 M NaCl platinum disk electrode, 1 mm diameter.

Scheme 14c has been evaluated by the computer simulation 198) of cyclic voltammograms in Fig. 18. The mechanism shown by Eqs. (31)-(35) with the assumption that k 2 = 34 has been applied. It is very close to / intra = 3.6 s for the GO randomly modified with 13 ferrocene carboxylic acid residues 104). Much higher values of / intra have been observed for the modification of natural donor sites of GO by [Ru(phen)2] and [Ru(bpy)2] units (Scheme 14h) 196). The simulation of cyclic voltammograms such as in Fig. 19 gives the rate...

Figure 5.41 Cyclic voltammograms of a poly(indole-5-carboxylic acid)-coated platinum electrode at different pH. The data for pH 1.2, 3.0 and 5.0 were recorded in a Mcllvaine buffer containing 0.1 M NaCl. In all cases, the sweep rate was lOmV/s. (A) 2.5 M HCl, (B) pH 1.2, (C) pH 3.0, (D) pH 5. Journal of the Chemical Society, Faraday Transactions, 1992, 88, 2685, P. N. Bartlett, D. H. Dawson, J. Farrington. Reproduced by permission of The Royal Society of Chemistry.)...

Cyclic voltammograms of carbon material rich with surface active oxygen functionalities (7.1% phenol, 3.5% quinone, 3.4% carboxylic) in acidic electrolyte. (Source Raymundo-Pinero, E., F. Leroux, and F. Beguin. 2006. Advanced Materials, 18,1877-1882. With permission.)... 

Fig. 32 Cyclic voltammograms of an electrode bearing a monolayer of COx reconsitiuted with photoisomerizable dyad 28(a/b) in the presence of glucose (50 mM), ferrocene carboxylic acid (50 pM), and with the photoisomerizable units (a, c) in the spiropyran-state (28a), and (b, d) in the merocyanine-state (28b). Recorded in 0.01 M phosphate buffer, pH 7.3, scan rate 5 mV s . Inset switching behavior of the electrocatalytic current as a function of the state of the photoisomerizable group s and m represent the photoisomerizable units in the spiropyran and the merocyanine states, respectively.

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