Polyanilines electrochemical

In 1985 David DeBerry [107], reported for the first time a change in corrosion behaviour of stainless steel with an electroactive polyaniline coating. He deposited polyaniline electrochemically from a pHl.O perchloric acid solution onto stainless steel and concluded that the coating was deposited over the passive metal oxide film (present on the metal surface in an acid environment). 

V. Tsakova, D. Borissov, and S. Ivanov, Role of the polymer synthesis conditions for the copper electrodeposition in polyaniline, Electrochem. Common., 3, 312-316 (2001). 

Figure 15.8 SEM image of a PANI membrane prepared by the phase inversion technique with the appearance of macrovoids. (Reprinted with permission from Advanced Functional Materials, High-performance, monolithic polyaniline electrochemical actuators by j.-M. Sansinena, J. Gao and H.-L. Wang, H.-L., 13, 9, 703-709. Copyright (2003) Wiley-VCH)...

Sansinena, J.M., J.B. Gao, and H.L. Wang. 2003. High-performance, monolithic polyaniline electrochemical actuators. Adv Funct Mater 13 (9) 703-709. 

Williams, G., et al. 2004. Inhibition of corrosion-driven organic coating delamination on zinc by polyaniline. Electrochem Commun 6 (6) 549. 

Cook, A., A. Gabriel, and N. Laycock. 2004. On the mechanism of corrosion protection of mild steel with polyaniline. / Electrochem Soc 151 (9) B529. 

Berlin et al. [166] reported the synthesis of n-doped polycationic polythiophenes using thiophene monomer functionalized with ammonium groups (see Figure 1.20 (7)). The polymer exhibits reversible p-and n-doping characteristics. The n-doping process and the associated expulsion of anions, is reportedly fast and independent of cation size, and the in situ conductivity is reportedly 2 x 10 S/cm. Kumar et al. synthesized a fully sulfonated n-doped polyaniline electrochemically using an acetonitrile-water (4 1) mixture [180]. The n-doping was confirmed... 

A. A. Karyakin, A. K. Strakhova, A. K. Yatsimirsky, Self-doped polyanilines electrochemically active in neutral and basic aqueous-solutions - electropolymerization of substituted anilines, Journal of Electroanalytical Chemistry 1994, 371, 259. 

H. Tang, A. Kitani, T. Yamashita, S. Ito, Highly sulfonated polyaniline electrochemically synthesized by polymerizing aniline-2,5-disulfonic acid and copolymerizing it with aniline, Synthetic Metals 1998, 96, 43. 

Electrophilic substitution of sulfonic acid on the polyaniline backbone in nonaqueous media has been carried out electrochemically by Sahin et al. [147]. They prepared self-doped sulfonated polyaniline electrochemically in acetonitrile containing anhydrous FSO3H. FSO3H was used as both sulfonation reagent for aniline and also as supporting electrolyte. In situ sulfonation occurred during polymerization under these conditions. The... 

Scheme 12.2. Aniline to polyaniline electrochemical polymerization mechanism (adapted from reference [89]).

Sansinena, J.-M., Gao, J., Wang, H.-L. High-performance, monoMthic polyaniline electrochemical actuators. Advanced Punctional Materials 13, 703-709 (2003)... 

Switching properties Chemical properties Mechanical properties of polyaniline Electrochemically Prepared Films Solution Cast Films and Fibers Optical properties of polyanilines Circular dichroism spectra... 

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