Cyclic voltammograms electropolymerization

Flavin adenine dinucleotide (FAD) has been electropolymerized using cyclic voltammetry. Cyclic voltammograms of poly (FAD) modified electrode were demonstrated dramatic anodic current increasing when the electrolyte solution contained NADH compare with the absence of pyridine nucleotide. 

Fig. 2. Curve A Eleotropolymerization of ImH H2(o-NH2)TPP in 0.1M Et NClO /CH CN by sweeping potential at 200mV/s on Pt electrode. Numbers represent scan number. Curve B Cyclic voltammogram of an electropolymerized film of poly-[H2(o-NH2)TPP] on a Pt electrode, in 0.1M Et NClO /CH CN at 200 mV/s. Integration of the charge under the wave shows that coverage is 3.5X10 9 mol/cm of the porphyrin sites. Curve C Rotated disk electrode voltammetry of the Os(lII,Il) reaction for 0.2 mM...

Very thin films (ca. 10 nm) formed by electropolymerization can be used to effectively prevent signals due to interferences. Figure 1 shows a cyclic voltammogram for the electropolymerization of poly(l,3-DAB) onto a platinum ultramicroelectrode (25/un diameter). Note how the current decreases with each subsequent scan, indicating coverage of the electrode surface. 

Figure 1. Cyclic voltammogram depicting the electropolymerization of 1,3-DAB onto a platinum ultramicroelectrode (25 pm diameter).

Fig. 9.11 (a) Cyclic voltammogram of 0.2 M benzene in [HMIMJFAP on platinum. The numbers refer to the respective cycle. Scan rate lOmVs-. (b) SEM micrograph of the electropolymerized film on the platinum electrode after synthesis in [HMIMJFAP. 

Electropolymerization — Figure. Cyclic voltammograms and the simultaneously detected EQCM frequency changes during the electropolymerization of aniline at a platinum electrode. Sweep rate 100 mV s-1. Solution composition 0.2 mol dm-3 aniline in... 

Figure 38. (Left) Structural representation of ETRPy Pandits electropolymerization reaction (Right) a) Successive CVs of 5.2 x 10 ETRPyP in 0.2 Af TEACIO4 DMF solution, scan rate = lOOmVs , Pt disk electrode, (i) Cyclic voltammogram of a Pt electrode modified with a polymeric ETRPyP film obtained by electropolymerization of a dip-coated film, in 0.2M TEACIO4 acetonitrile solution, scan rate = lOOmV s . ...

Figure 8 Cyclic voltammogram showing the reductive region of the electropolymerization of [Ru(vbpy)3] + (vbpy = 4-vinyl-4 -methyl-2,2 -bipyridine) versus SSCE with 0.1 M Et4NC104 as the supporting electrolyte in CH3CN on a platinum electrode. (Reprinted with permission from Denisevich, Abrura, Leidner, Meyer, and Murray 1982 American Chemical Society)...

Figure 1 Cyclic voltammograms recorded at 50mV/s during the electropolymerization on a gold surface of 0.1 M aniline in 0.5 M sulphuric acid (a), and of the polyaniline film in the supporting electrolyte (0.5 M sulphuric acid) alone after polymerization (b).

FIGURE 7. Cyclic voltammograms of chemically modified electrodes prepared by electropolymerization of fac-Re(vbpy)(00) 01 in CH CN/O.IM TBAH with a Pt... 

Figure 6-9. Above Cyclic voltammogram of the 10th cycle during the electropolymerization of 5la (M= Cu) in DMSO (concentrations 10 M 51a, 0.1 M sodium perchlorate, scan rate 50 mV s ). Below Interpretation of the peak assignments.

FIGURE 10.1. (a) Repetitive cyclic voltammograms for the electropolymerization of films of [Ru(v-bpy)3] on glassy carbon electrodes, (b) Cyclic voltammograms of the modified electrode in supporting electrolyte only, (c) The correlation between the growth and the scan number. (From Ref 29a with permission of the American Chemical Society)... 

Figure 13.17 Cyclic voltammograms for the electropolymerization of urease entrapped PPy onto carbon paper obtained from different scanning rates and the detected potential changes of 1.0 mM urea concentration from the urease immobilized. Permission awaited...

Figure 8.8. (A) Evolution of the cyclic voltammograms of complex Co(II)-32 in DCM containing 0.1 M TBABF4 during repeated successive scans (only 15 scans are shown). Scan rate = 200 mV s , concentration 3 mM, electrode = glassy carbon. (B) Absorption spectra of poly[Co(II)-32] films on ITO electrodes prepared with 30 (curve 1), 60 (curve 2) and 120 (curve 3) electropolymerizing scans. Curve 4 corresponds to Co(II)-32 monomer in DCM solution. Reprinted from ref. [82]. Copyright (2003) Society of Porphyrins Phthalocyanines.

The cyclic voltammograms and the changes that occur to them during repetitive cycling are similar to those of 3-methylthiophene oxidation in acetonitrile. When a platinum electrode is used, the color change (red-blue) due to the redox transformation of poly (3-methylthiophene) is easily visible. A visual inspection also reveals that the electropolymerization reaction starts at the three-phase junction, as theoret-... 

Figure 3.3 Cyclic voltammograms of electropolymerization of 0.1 M 3-amino-phenylboronic acid (A) in the absence and (B) in the presence of 0.1 M KF electrolyte 0.5 M H2SO4 aqueous solution potential scan rate lOOmV/s (Reproduced from European Journal of Organic Chemistry, 2000, 1703, M. Nicolas, B. Fabre, G. Marchand, J. Simone, with permission from Wiley-VCH.)...

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