Conductive polymers doping concept

Properties of representative conducting polymers. Doped conjugated polymers have generated substantial interest in view of possible applications such as lightweight batteries, antistatic equipment, and microelectronics to speculative concepts such as molecular electronic devices.37-38 These polymers include doped polyacetylene, polyaniline, polypyrrole, and other polyheterocycles (Figure 5). While the conduction mechanism of metals and inorganic semiconductors is well understood and utilized in microelectronics, this is not true to the same... 

The concept of the polaronic metal has been applied to polyaniline as well, and may be a more general feature of the metallic state in conducting polymers. In the context of the discussions presented in Section I through Section IV, the polaronic metal is indeed a "metal" and the analysis given is appropriate. In particular, the importance of the selforganization of the doped polymer (to avoid counter-ion scattering) and the need to avoid localization etc. are of clear importance. 

The concept of doping in conducting polymers is significantly different from conventional doping in inorganic semiconductors such as silicon. For example. 

The concept of self-doped conducting polymers was proposed some years ago with the synthesis of poly(3-thiophene-j8-ethanesulfonate) and poly(3-thiophene 5-butanesulfonate) (61) [278]. In these systems the charge-compensating anion is covalently bound to the polymeric backbone consequently, instead of anion incorporation, charge compensation upon doping involves the expulsion of cationic species. Furthermore, due to the presence of the sulfonate group, these polymers are the first examples of water-soluble PHCs. The polymers described in Ref. 278 were... 

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