Phenols electrical structural effects

The range of the data encompassed more than 17 orders of magnitude in this set. The value of Pp shows that the localized electrical effect is predominant. The value of t] shows that the electronic demand is comparable to that observed for the ionization of 4-substituted phenols. The statistics reported above are described in the Glossary. In view of the many different original sources of the data and the enormous range of structural type, the goodness of fit is quite reasonable. 

Other phenolic compounds have also been shown to cause similar changes in conformation and physical properties of PAn/HCSA salts.24-28 Most of these, for example, m-cresol, are highly corrosive and toxic, limiting their desirability for processing and enhancing the electrical conductivity of PAn s. However, we have recently found that the structurally related molecules thymol 2 and carvacrol 3, which are much less toxic than m-cresol, can also function as effective secondary dopants for PAn/(+)-HCSA films and increase the electrical conductivity by up to two orders of magnitude.28... 

Surface-activate ions of the supporting electrolyte not only change the chemical potential of the organic substance in the solution, but also effect the structure of the electric double layer, increasing or decreasing the adsorption of orgainc molecules. Thus, in the presence of anions, which decrease the mutual repulsion between the adsorbed cations of [(C3H7)4N] the adsorption of the latter cations increases. At the same time, the specific adsorption of Br and I anions decreases the adsorption of ethyl alcohol, phenol and of the salicylate anion [3]. 

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