Polyaniline structures

Fig. 13.5. Top-view differential interference contrast microphotograph of a bottom gate polyaniline-insulator-polyaniline structure. The channel length is 2.5 pm. The squares are the vias of 5 x 5 pm2.

If the polyaniline structure can react with benzoquinone which is the final oxidation product of aniline in acidic aerated solution, a broad ESR signal of low intensity is found indicating the chemical change of the polymer structure (Fig.11). Even the UV-irradiation can not alter the radical concentration of the new polymer structure. 

T.-H. Ting, K.-H. Wu, Synthesis and Electromagnetic Wave-Absorbing Properties of BaTiOj/Polyaniline Structured Composites in 2-40 GHz. J Polym Res 2013,20. 

Tzou, K.T., and R.V. Gregory. 1993. Mechanically strong, flexible highly conducting polyaniline structures formed from polyaniline gels. Synth Met 55-57 983. 

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S. A. Chen, G. W. Hwang, Water-soluble self-acid-doped conducting polyaniline - Structure and properties, Journal of the American Chemical Society 1995, 117, 10055. 

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Polyanilines formed by both the chemical and electrochemical processes have been extensively studied to establish structure-property relationships. In this section, the structural studies of polyaniline are reviewed and the influence of structure on properties is considered in Chapter 5. The description of polyaniline structure is complicated by its complexity. As described above, polyaniline can exist in six different forms (the salt or base forms of leucoemeraldine, emeraldine and pernigraniline). In addition, the proto-nated forms of polyaniline also have counter-anions intimately associated with the positively charged polyaniline chains. Finally, it has also been observed that polyanilines may contain considerable amounts of solvent molecules. 

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