Intrinsically electron-conducting polymers

Figure 16.6 Galvanic coupling between iron disc (0.25 mm diameter) and PPy-coated iron ring (5 mm outer diameter) immersed in 0.1 M K2SO4 solution (pH 4). The gap between the disc and the ring is 75 pm. (Reprinted with permission from Journal of Electroanalytical Chemistry, Mechanism for protection of iron corrosion by an intrinsically electronic conducting polymer by T.D. Nguyen, T.A. Nguyen, M.C. Pham etai, 572, 2, 225-234. Copyright (2004) Elsevier Ltd)...

Nguyen, T.D., et al. 2004. Mechanism for protection of iron corrosion by an intrinsically electronic conducting polymer. / Electroanal Chem 572 (2) 225. 

An active research area is currently the use of conducting polymers as OLED devices. These polymeric-organic electronic materials are varied in compositions. In 1957, the first intrinsic electrically conduction polymer. 

In the past decade, the potential of intrinsically electrically conductive polymers has transformed from a laboratory curiosity into commercial uses. A number of conducting polymers have been studied all of which exhibit a conjugated stmc-ture for a path of electron transfer -specifically when doped. Representative electrically conductive polymers include those shown in Figure... 

Beyond numerous studies of soluble reaction intermediates and products (as an example see a study of electroreduction of nitrosobenzene [23] or investigations of chromium aryl complexes [24]) this design has also been employed successfully in studies of polymer films deposited onto these electrodes. Films showing redox activity and, in many cases, intrinsic electronic conductivity [intrinsically conducting polymers (ICPs)] have been studied for an overview see [25, 26]. In a typical set of spectra (Fig. 5.5) obtained with a film of poly aniline, optical absorptions corresponding to the 7T 7T transition (around 330 nm) and to further transitions involving species like radical cations (polarons) and dications (bipolarons) formed in the sequence of electrooxidation of the film are observed. 

The ECPs are a class of conjugated polymers, which possess intrinsic electronic conductivity. This intrinsic electronic conductivity has envisaged their use in various electronic devices. 

Electronically Conducting Polymers (Intrinsically Conducting Polymers—ICPs) 15... 

Electronically Conducting Polymers (Intrinsically Conducting Polymers—ICPs) does not participate in the polymerization reaction [319] ... 

On the other hand, the electrodes attaching electroactive polymer films and polymer CMEs having ionic, electronically conductive, or redox property have been widely studied. Electronically conducting polymers, which are usually more conductive than redox polymers, can be doped to increase their intrinsic conductivity. Such films are now popular because they are technically easier to modify by applying polymer onto an electrode compared to covalent monolayer formation. Polymer films generally adhere satisfactorily to electrodes simply by forces of chemisorption or by being insoluble in the contacting solvent. 

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