Poly(o-anisidine) Langmuir−Schaefer Films:  Fabrication and Characterization

Abstract

The effect of pH on the Langmuir monolayer behavior was investigated for the poly(o-anisidine) (POAS) conducting polymer. The Langmuir−Schaefer (LS) films were prepared at pH 1 of the subphase, where the doping during the monolayer formation was essential for the high quality of the conducting polymer film. The LS films of POAS were characterized by using Fourier transform infrared spectroscopy, UV-vis absorption, X-ray diffraction, and ellipsometry techniques. The thickness of one monolayer of POAS film was estimated to 24 Å by using X-ray reflectivity and ellipsometric measurements. The uniformity of such POAS LS films was investigated for the redoping in 1 M HCl (protonic acid) for achieving the higher conductivity. The conductivity of the POAS LS film was shown to vary between 0.1 and 10-9 S/cm. Direct current through conducting LS films of POAS was observed as a function of monolayers. Further, the effects of different protonic acids on the electrical behavior of the POAS LS films were also investigated at length.

Studies of optical, morphological and electrical properties of POMA/PMMA blends, using two different levels of doping with CSA

“…The peaks observed at 2830 and 2923 cm -1 occurred due to C-H stretching of the -OCH 3 group in the polymeric chain [18][19][20][21] and CH 3 , CH 2 groups belonging to CSA [21] . that the increase of PMMA concentration in the blends provides a decrease in flattened globules.…”

“…Bands at 1242 and 1040 cm −1 are a contribution of the C-O-C stretching of an alkyl aryl ether linkage [23] . Bands observed at 1047, 789, 712, 602 cm -1 are associated with o-substituted aromatic rings [18] . Peaks at 1588 and 1495 cm -1 were attributed to C=C stretching vibrations of the quinoid and benzenoid rings, respectively [19,21] , indicating that CP possess imine and amine groups in the polymeric structure [19] .…”

Synthesis of Various Polyaniline / Clay Nanocomposites Derived from Aniline and Substituted Aniline Derivatives by Mechanochemical Intercalation Method

“…Similarly, other substituted polyaniline derivatives like poly(o-anisidine) and poly(o-toludine)/clay nanocomposites were also prepared. Free stand polyaniline and polyaniline derivatives were synthesized based on reported method [14][15][16] .…”

Electrochemical and chemical investigations of the co-polymers of 3-aminobenzenesulfonic acid with aromatic amines for their application in electrochromic devices

“…In light of this, various copolymers, poly(pyrrole-N-methyl pyrrole), poly(pyrrole-thiophene), copoly (3-thiophenes), poly(aniline-ortho-anisidine), poly (aniline-co-ortho-ethoxyaniline), etc. have been prepared either by electrochemical or chemical polymerization techniques [18][19][20][21][22][23][24]. In most of the cases, the estimation of copolymerization reactivity leads to the incorrect parameters as well as a non-linear approach, for the estimation of reactivity ratios that are achieved by copolymer composition [21,25].…”