Chemical and electrochemical analyses of polyaniline prepared with FeCl3

Conducting Polymers Functionalized with Phthalocyanine as Nitrogen Dioxide Sensors

“…The characteristic IR absorption intensity due to quinoid ring at 1590 cm polymer (polyaniline) gets attached to the phthalocyanine ring via C-Cl termination. The data represented for these polymers is well matched with the reported literature IR data for polyaniline [10] and phthalocyanine [11]. Thus, IR studies on functionalized polymer clearly gives an evidence of incorporation of phthalocyanine moieties into the polymer chain.…”

Micro-chemical structure of polyaniline synthesized by self-stabilized dispersion polymerization

“…18,[27][28][29][30][31][32] Four characteristic peaks were observed at 123, 137, 141, 148 (shoulder) and 158 ppm relative to TMS. Clear peak assignment for each carbon could be made: peak at 158 ppm and a shoulder at 148 ppm (non-protonated carbons 10 and 7, respectively), peaks around 140 ppm (benzoid carbons C (8,9) at 141 ppm, and quinoid carbons C(5,6) at 137.7 ppm), peak at 123 ppm and a shoulder at 113 ppm (benzoid carbons C(1,2) and C (3,4), respectively). Compared with the spectra observed in CPANi, the spectra for HCPANi are significantly better resolved and no other small peaks or shoulders related to defect sites are appeared in the spectra.…”

“…H 2 SO 4 ) was measured with a capillary Ubbelohde viscometer at 30 o C. Note that all the measurements here were made without the additives such as LiCl to prevent the aggregation of the chains because LiCl is known to induce a certain degree of doping in the polymer that has different levels of aggregation. 8 The molecular weight of PANi(t-BOC) dissolved in THF was measured with a GPC (Waters 150 CV) at 50 o C. Calibration curves were obtained using polystyrene and polyvinylpyridine standards.…”

Platinum–polyaniline nanofilms synthesized at a liquid|liquid interface with enhanced conductivity

“…Although the standard reduction potential for FeCl 3 is low (0.77 V vs. the standard hydrogen electrode (SHE)), it has been proven to be a particularly useful oxidant [23]. As the standard reduction potential of the PtCl 2À 6 =Pt redox couple (0.735 V, vs. SHE) [24] is close to that of the Fe 3+ /Fe 2+ couple, it is proven that aniline can also be oxidized to anilinium radical cation by PtCl 2À 6 and then polymerized to form polyaniline.…”