Polyaniline preparation

Ma, C.A. et ah. Electro-oxidation of formaldehyde on polyaniline prepared in 1-ethyl-imidazolium trifluoroacetate, Electrochem. Solid-State Lett., 8, G122, 2005. 

Hydrochloric acid as well as camphor sulfonic acid doped polyaniline prepared in chloroform often have [59] log a proportional to T as expected for quasi-one-dimensional variable range hopping, Equations (3) and (4). Generally, the higher conductivity samples have a weaker temperature dependence at low temperatures (Tq 700-1000 K for T<80 K), and lower conductivity samples a stronger temperature dependence (To 4000 K). The smaller Tq for the more highly conducting samples has been associated with weaker localization due to improved intrachain and interchain order. 

This section discusses the reactivities and biosensor applications of functionalized electrosynthetic polyanilines prepared by (i) electropolymerization and (ii) chemical polymerization of aniline on the surfaces of Au, glassy carbon or Pt disk electrodes. Four such polyaniline or substituted composite polyaniline films developed by our research group are (a) nanofibrillar polyaniline-polyvinyl sulfonate (PANI-PVS), (b) poly(2,5-... 

Figure 8.28. Temperature clepencleni C6,5ghz of CSA doped polyaniline prepared in CHCI3 and m-cresol, Inset cTs jghz of CSA doped polyaniline (m-cresol) Reprinted front ref. 60. with perinissioii of the authors.

J. Stejskal and R. G. Gilbert, Polyaniline. Preparation of a conducting polymer. Pure Appl. Chem., 74, 857-867 (2002). 

DOPANT AND CHARGE CARRIERS CORRELATION IN POLYANILINE PREPARED BY POTENTIOSTATIC METHOD... 

P. Saini, M. Arora, Formation Mechanism, Electronic Properties Microwave Shielding by Nano-Structured Polyanilines Prepared by Template Free Route Using Surfactant Dopants. J Mater Chem A 2013, J, 8926. 

Zhou, H.H., S.Q. Jiao, J.H. Chen, W.Z. Wei, and Y.F. Kuang. 2004. Relationship between preparation conditions, morphology and electrochemical properties of polyaniline prepared by pulse galvanostatic method (PGM). Thin Solid Films 450 (2) 233-239. 

Yasuda, A., and T. Shimidzu. 1993. Chemical and electrochemical analyses of polyaniline prepared with FeCla. Synth Met 61 239. 

Hydrochloric acid as well as camphor sulfonic acid doped polyaniline prepared in chloroform often have log a proportional to as expected for quasi-one-dimensional variable range hopping (VRH), Fig. 46.11, [73,121,143] ... 

FIGURE 46.42. Nanofiber network of polyaniline prepared by dilute polymerization. Reprinted from [243] (2005) with permission from Wiley-VCH. 

I. Mav, M. Zigon, A. Sebenik, J. Vohlidal, Sulfonated polyanilines prepared by copolymerization of 3-aminobenzenesulfonic acid and aniline the effect of reaction conditions on polymer properties, of Polymer Science Part A - Polymer Chemistry 2000, 38, 3390. 

Fig. 8. Structure of polyanilines prepared by HRP-catalyzed polymerization of o-phenylenediamine...

We have found similar results in our laboratories making impregnated papers with PPy and PAn for inverse thin layer chromatography. 7 0 method we used to prepare polyaniline-modified paper was to load filter paper strips with aniline, which was allowed to diffuse throughout the paper for about ten minutes. The strips were then immersed in FeClj that had been acidified with HCl. Chemical polymerization was allowed to proceed for about forty hours. The chemical structure of polyaniline prepared in this matter was presumed to be the same as the electrochemically polymerized polymer. However, the morphology of the polymer surface was that of the filter paper substrate. The polyaniline adheres well to the filter paper when it is dried, and no problems with chemical instability were observed. 

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