Startseite The role of acidity profile in the nanotubular growth of polyaniline
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The role of acidity profile in the nanotubular growth of polyaniline

  • Elena Konyushenko EMAIL logo , Miroslava Trchová , Jaroslav Stejskal und Irina Sapurina
Veröffentlicht/Copyright: 28. November 2009
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Chemical Papers
Aus der Zeitschrift Chemical Papers Band 64 Heft 1

Abstract

Conditions of polyaniline (PANI) nanotubes preparation were analyzed. Aniline was oxidized with ammonium peroxydisulfate in 0.4 M acetic acid. There are two subsequent oxidation steps and the products were collected after each of them. At pH > 3, neutral aniline molecules are oxidized to non-conducting aniline oligomers. These produce templates for the subsequent growth of PANI nanotubes, which takes place preferably at pH 2–3. At pH < 2, granular morphology of the conducting PANI is obtained. High final acidity of the medium should be avoided in the preparation of nanotubes, e.g., by reducing the amount of sulfuric acid which is a by-product. Reduction of the peroxydisulfate-to-aniline mole ratio was tested for this purpose in the present study. Lowering of the reaction temperature from 20°C to −4°C had a positive effect on the formation of nanotubes.

Keywords: conducting polymer; polyaniline; nanotubes; aniline oxidation; silver

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Published Online: 2009-11-28
Published in Print: 2010-2-1

© 2009 Institute of Chemistry, Slovak Academy of Sciences

Artikel in diesem Heft

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  2. Anodic reactions of sulphate in molten salts
  3. Fuels obtained by thermal cracking of individual and mixed polymers
  4. Synthesis, structure, and solvent-extraction properties of tridentate oxime ligands and their cobalt(II), nickel(II), copper(II), zinc(II) complexes
  5. Properties of a poly(ethylene glycol)-block-poly(γ-benzyl l-glutamate)-graft-poly(ethylene glycol) copolymer membrane
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  7. A Raman spectroscopy study on differently deposited DLC layers in pulse arc system
  8. 1,7′-dimethyl-2′-propyl-1H,3′H-2,5′-bibenzo[d]imidazole as a corrosion inhibitor of mild steel in 1 M HCl
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  15. Numerical properties of equations involving high-order derivatives of pressure with respect to volume
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https://doi.org/10.2478/s11696-009-0101-z
Schlagwörter für diesen Artikel
conducting polymer; polyaniline; nanotubes; aniline oxidation; silver

Artikel in diesem Heft

  1. Immobilization of urease in poly(1-vinyl imidazole)/poly(acrylic acid) network
  2. Anodic reactions of sulphate in molten salts
  3. Fuels obtained by thermal cracking of individual and mixed polymers
  4. Synthesis, structure, and solvent-extraction properties of tridentate oxime ligands and their cobalt(II), nickel(II), copper(II), zinc(II) complexes
  5. Properties of a poly(ethylene glycol)-block-poly(γ-benzyl l-glutamate)-graft-poly(ethylene glycol) copolymer membrane
  6. Influence of tungsten sources on the synthesis and properties of ammonium dioxothiotungstate
  7. A Raman spectroscopy study on differently deposited DLC layers in pulse arc system
  8. 1,7′-dimethyl-2′-propyl-1H,3′H-2,5′-bibenzo[d]imidazole as a corrosion inhibitor of mild steel in 1 M HCl
  9. The role of acidity profile in the nanotubular growth of polyaniline
  10. Direct sulfenylation of acetone with benzothiazolesulfenamides to benzothiazolylthio-substituted alkylaminopropene: synthesis and application
  11. Substituted pyridopyrimidinones. Part 5. Behavior of 2-hydroxy-4-oxo-4H-pyrido[1,2-α]pyrimidine-3-carbaldehyde in nucleophilic condensation reactions
  12. Lidocaine hydrochloride preparations with ionic and non-ionic polymers assessed at standard and increased skin surface temperatures
  13. Phase separation in non-ionic surfactant Triton X-100 solutions in the presence of phenol
  14. Phase formation in sodium dodecylsulfate solutions in the presence of salicylic acid for preconcentration purposes
  15. Numerical properties of equations involving high-order derivatives of pressure with respect to volume
  16. Synthesis and characterization of conducting copolymer of (N 1,N 3-bis(thiophene-3-ylmethylene)benzene-1,3-diamine-co-3,4-ethylenedioxythiophene)
  17. Intercalation of non-aromatic heterocyclic amines into layered zirconium glycine-N,N-dimethylphosphonate
  18. Kinetics of catalytic Meerwein-Ponndorf-Verley reduction of aldehydes and ketones using boron triethoxide
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