Poly o-toluidine POT

PEA base and HCl salt are reported to have diffraction patterns that are quite different from those of the EB-l/ES-1 system of PANI (Pouget et al. [303,323]). Crystallinity in PEA base material is very low and not significantly enhanced by stretching. The diffraction 

MacDiannid et al. [311] have shown that it is possible to prepare physically crosslinked PEA-EB films via a gel route similar to that for plain PANI, and induce a small level of cry.stallinity by stretching. 

This polymer has been prepared in oxidized state by Gupta and Umare [324]. According to the diffraction pattern there is little crystallinity in the sulphate salt. Nonetheless, the authors index the peaks above the amorphous background on the basis of an orthorhombic lattice with = 7.I5 A, 6=8.00 A and c= 11.99 A. 

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Figure 4 Overview of conductivity of conducting polymers at room temperature, (a) stretched [CHClj)], (from Ref. 43a), (b) stretched [CHCIj)] (from Ref. 43b), (c) [CH(l3)], (from Ref. 43c), (d) [CH(l3)], (from Ref. 43d), (d ) [CH(1,)], (from Ref. 43e), (e) stretched PAN-HCl (from 43f), (f) PAN-CSA from m-cresol (from Ref. 43g), (g) PAN-CSA from OT-cresol (from Ref. 43h), (h) PAN derivative poly(o-toluidine) POT-CSA fiber from m-cresol (from Ref. 43i), (i) POT-HCl (from Ref. 43j), (j) sulfonated PAN (from Ref. 43k), (k) stretched PPy(PFg) from (Ref. 431), (1) PPy(PF ) ( ) PPy(TsO) (from Ref. 43m, 43n), (m) iodine doped poly(dodecylthiophene) (from Ref. 43o), (n) FeCl4 doped PT (from Ref. 43p), (o) PPV(H2S04) (from Ref. 43q), (p) PPP(Asp5) (from Ref. 43r), (q) Kr- implanted (polyphenylenebenzobisoxazole) (from Ref. 43s), (r) undoped trans-(CH (from Ref. 43t), (s) undoped cA-(CH)x from (Ref. 43u), (t) undoped PAN (EB) (from Ref. 43v), (u) undoped PPy (from Ref. 43w), (v) undoped PT (from Ref. 43p, (w) undoped PPV (from Ref. 43x), (x) undoped PPP (from Ref 43y). The conductivity reported for the undoped polymers should be considered an upper limit due to the possibility of impurities.

In the woik by Lakshmi et al. (Lakshmi, 2011), Poly (o-toluidine) (PoT), a derivative of polyaniline, is prepared by chemical oxidation polymerization and is blended with polyvinylchloride (PVC) to achieve self supported films. These PoT-PVC blend films were irradiated by 60 MeV Si ions at different fluences and evolved gases were monitored online by Residual Gas Analyzer (RGA). 

The first chemical synthesis of poly(o-toluidine) (POT) as an analogue of PANI was achieved by Green and Woodhead [8] in 1910. The electrochemical synthesis of poly(/ -toluidine) (PPT) oligomer was reported by Volkov et al. [26]. 

We have recently studied the Graphene-PANl derivative nanocomposites, such as poly (o-methoxy aniline) [poly (o-anisidine) (POA)] and G-poly (o-methyl aniline) [poly (o-toluidine) (POT) electrodes for supercapacitors (Fig. 9). The specific capacitances (Cp) of supercapacitors based on G-PANl, G-POA, and G-POT in 2 M H2SO4 electrolyte has been estimated to be 400, 380, and 425 F/g, respectively [63]. 

N nonwoven, S single, O oriented, PAA polyacrylic acid, PVA polyvinyl alcohol, PEI polyethyleneimine, HCSA 10-camphorsulfonic acid, PAN/polyaniline, PEO poly(ethylene oxide), PDPA polydiphenylamine, PMMA polymethyl methacrylate, POT poly-o-toluidine, PS polystyrene, MWCNT multiwalled carbon nanotube, CB carbon black, PECH polyepichlorohydrin, PIB polyisobutylene, PVP polyvinylpyrrolidone, PAN polyacrylonitrile, VOC volatile organic... 

Wei et al. [36] have also reported that electrochemi-cally and chemically prepared poly(o- and m-toluidines) give essentially identical cyclic voltammograms shown in Figure 13.8, which indicates that these two polymers are essentially the same. A plot of the 1/2 of PMT at different pH values is given in Figure 13.9. The first redox process in both POT and PMT is almost independent of the pH in the range 1.0 to —0.7. At higher pH values, the first redox peak was not resolved [36]. 

Figure 13.35. Cyclic voltammograms of electrochemically prepared (a) PANI, (b) poly(aniline-co-o-toluidine) (/, =0.5) and (c) POT in 0.1 M HCl potential sweep —0.20 to 0.35 V versus SCE, scan rate 25 mV s (adapted from ref 63, with permission from the American Chemical Society).

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