Electrochemical thin film deposition of polypyrrole on different substrates

Electroconducting materials based on polypyrrole

“…[57][58][59]. Usually used substrates for polymer deposition are electrodes made of graphite, carbon fibers, glassy carbon, Indium-tin oxide (ITO), inert metals like Au and Pt [11,43,[60][61][62][63][64][65].…”

“…Voltamograms of PPy synthesized on glassy carbon using three different methods: galvanostatically, potentiostatically and sequential electrodeposition method, scanned in the potential range from -0.2 to 1.02 V/(Ag/AgCl) in 0.1 M phosphate buffer saline (PBS) indicated the biggest redox capacity for polymer deposited at constant current, while the worst electrochemical activity have shown film gained by sequential deposition method [60]. As far as the doping level concerns, it was reported that for PPy it ranges between 0.2 and 0.33 charge per monomer unit, and it is dependent on the polymerization potential and the nature of the solvent / doping media.…”

Polypyrrole Composites: Electrochemical Synthesis, Characterizations and Applications

“…The EIS spectra (i.e. Nyquist plots) of several composites such as S/T-PPy (Tubular PPy) and S/G-PPy (Granular PPy) (Liang et al, 2010), PEDOT/h-PPy (Poly 3,4-ethylenedioxythiophene/horn like-PPy) (5:1) (Wang et al, 2007), PPy films on DuPont 7012 carbon composite (Li et al, 2005), S-PPy and Si/PPy (9:1) (Guo et al 2005) reported in literature displayed a small semi-circle at high frequencies and a straight line at lower frequencies. The observed linearity at low frequencies has been ascribed to the anion diffusion in the composite matrix and the semicircle in the high frequency region, to the contact resistance and charge transfer resistance.…”

Self-assembled thienylsilane molecule as interfacial layer for ZnO nanowire/polymer hybrid system

“…In order to grow polymers by the electrochemical method, the conductive substrates are required; however this can be a further advantage for solar cell application because solar cells are fabricated using conducting substrate as electrode, such as ITO, FTO-coated glass, or plastic substrates. There has been extensive work in the electrochemical polymerization field; polythiophene, [26][27][28] polypyrrole, 29 and poly(3,4-ethylenedioxythiophene) 30 have been electrochemically polymerized and well studied. One disadvantage for electrochemical polymerization method on conducting substrate is that it initiates the polymerization reaction at the electrode surface rather than that of the semiconducting oxide (e.g., ZnO), 20 and therefore, it may lead to a large amount of polymer formed on the substrate (electrode) rather than directly onto the semiconducting oxide.…”