Solution cyclic voltammograms monomer

Cyclic voltammograms of solutions of the pyrrole monomers also show a dependence on the anion present in the electrolyte and can show multiple peaks with Epa values ranging from + 1.0 to + 1.3 V in acetonitrile [57,279]) (+ 0.8 to + 1.1 V vs. 

The cyclic voltammograms of all the monomers show an irreversibile oxidation peak, followed by a fast chemical process, which is attributable to the polymerization the electrodes covered by 1 /u-m film, upon transfer into blank solution, show the reversible redox cycles attributable to the electroactivity of the polymers. 

Fig. 2. Cyclic voltammograms of 5 x 10- M benzoquinone solution on a Pt I PPy electrode irradiated with gamma rays (area 0.44 cm, film thickness=0.8 Lim, monomer concentration 5.5 x 10 M, irradiation dose 0.3 MRad)...

Figure 6.25 Cyclic voltammogram of nanofibers of 20 w/v % PANA/PAN with different scan rates as 20, 50, and 100 mV/s (a) and the inset graph indicates increasing of current values depending on scan rates. The stability of the film coating on ITO-PET with increasing number of cycles in a monomer-free solution (1 M HCl] (b]. Reprinted with permission from Ref. 190, Copyright 2013 Elsevier Ltd.

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.

Figure 8.21. (A) Evolution of repeated cyclic voltammograms of ITO electrode in 0.1 M NaOH aqueous solution + Ni(II)-71 monomer (2 mM) (60 scans are shown) (B) Cyclic voltammogram of poly[Ni(II)-71] film-coated electrode prepared by 60 electropolymeri-zing scans, as indicated in (A) potential scan rate 100 mV s Reprinted from ref.[180]. Copyright (1997), reproduced by permission of The Royal Society of Chemistry.

Figure 5.11 Cyclic voltammogram of a thin N-PrS PProDOP film in a monomer free solution of 0.1 M LiC104/propylene carbonate. Scan rates are (a) 20, (b) 50, (c) 100, (d) 150, and (e) 200mV/s. (Reprinted by permission of ref. (Reprinted with permission from Macromolecules, 36, 639. Copyright (2003) American Chemical Society.)...

Cyclic voltammetry can be used to estimate the charge transfer rate and also evaluate how this rate depends on parameters such as morphology and the chemical structure. The cyclic voltammetric examination of electroactive polymers is usually done in monomer-free solutions containing only the solvent and supporting electrolyte. In order to avoid the complication of mixed electrolytic equilibria, the supporting electrolyte and the solvent are usually the same as employed for the polymerization. Figure 3 shows the cyclic voltammogram (CV) of a polypyrrole film prepared in acetonitrile/tetra-w-butyl ammonium fluoborate medium. The anodic peak corresponds to polypyrrole oxidation, while the cathodic one corresponds to the reduction of this species. 

Fig. 6 Cyclic voltammograms of benzanthrone (a), thiophene (f) and the monomer mixtures with benzanthrone/thiophene = 5 2 (b), 1 1 (c), 1 3 (d), and 1 5 (e), respectively, in BFEE/CH3CN (9 1 vol) solutions, v = 100 mV s . Reproduced with permission from ref. 101, Copyright 2010 Springer-Verlag.

Fig. 5 Cyclic and differential voltammograms of RU3O cluster monomer 36 and dimer 37 with orf/zometallated 2,2/-bipyrimidine, recorded in 0.1 M dichloromethane solution of (Bu4N)(PF6). The scan rate is lOOmVs-1 for CV and 20mVs-1 for DPV...

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