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The role of unbound oligomers in the nucleation and growth of electrodeposited polypyrrole and method for preparing high strength, high conductivity films

Journal Article


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Abstract


  • Polypyrrole is a material with immensely useful properties suitable for a wide range of electrochemical applications, but its development has been hindered by cumbersome manufacturing processes. Here we show that a simple modification to the standard electrochemical polymerization method produces polypyrrole films of equivalently high conductivity and superior mechanical properties in one-tenth of the polymerization time. Preparing the film as a series of electrodeposited layers with thorough solvent washing between layering was found to produce excellent quality films even when layer deposition was accelerated by high current. The washing step between the sequentially polymerized layers altered the deposition mechanism, eliminating the typical dendritic growth and generating nonporous deposits. Solvent washing was shown to reduce the concentration of oligomeric species in the near-electrode region and hinder the three-dimensional growth mechanism that occurs by deposition of secondary particles from solution. As artificial muscles, the high density sequentially polymerized films produced the highest mechanical work output yet reported for polypyrrole actuators.

UOW Authors


  •   Zheng, Wen (external author)
  •   Razal, Joselito M. (external author)
  •   Spinks, Geoff M.
  •   Truong, Van T. (external author)
  •   Whitten, Philip G. (external author)
  •   Wallace, Gordon

Publication Date


  • 2012

Citation


  • Zheng, W., Razal, J. M., Spinks, G. M., Truong, V., Whitten, P. G. & Wallace, G. G. (2012). The role of unbound oligomers in the nucleation and growth of electrodeposited polypyrrole and method for preparing high strength, high conductivity films. Langmuir: the ACS journal of surfaces and colloids, 28 (29), 10891-10897.

Scopus Eid


  • 2-s2.0-84864351001

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1287&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/288

Has Global Citation Frequency


Number Of Pages


  • 6

Start Page


  • 10891

End Page


  • 10897

Volume


  • 28

Issue


  • 29

Place Of Publication


  • United States

Abstract


  • Polypyrrole is a material with immensely useful properties suitable for a wide range of electrochemical applications, but its development has been hindered by cumbersome manufacturing processes. Here we show that a simple modification to the standard electrochemical polymerization method produces polypyrrole films of equivalently high conductivity and superior mechanical properties in one-tenth of the polymerization time. Preparing the film as a series of electrodeposited layers with thorough solvent washing between layering was found to produce excellent quality films even when layer deposition was accelerated by high current. The washing step between the sequentially polymerized layers altered the deposition mechanism, eliminating the typical dendritic growth and generating nonporous deposits. Solvent washing was shown to reduce the concentration of oligomeric species in the near-electrode region and hinder the three-dimensional growth mechanism that occurs by deposition of secondary particles from solution. As artificial muscles, the high density sequentially polymerized films produced the highest mechanical work output yet reported for polypyrrole actuators.

UOW Authors


  •   Zheng, Wen (external author)
  •   Razal, Joselito M. (external author)
  •   Spinks, Geoff M.
  •   Truong, Van T. (external author)
  •   Whitten, Philip G. (external author)
  •   Wallace, Gordon

Publication Date


  • 2012

Citation


  • Zheng, W., Razal, J. M., Spinks, G. M., Truong, V., Whitten, P. G. & Wallace, G. G. (2012). The role of unbound oligomers in the nucleation and growth of electrodeposited polypyrrole and method for preparing high strength, high conductivity films. Langmuir: the ACS journal of surfaces and colloids, 28 (29), 10891-10897.

Scopus Eid


  • 2-s2.0-84864351001

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=1287&context=aiimpapers

Ro Metadata Url


  • http://ro.uow.edu.au/aiimpapers/288

Has Global Citation Frequency


Number Of Pages


  • 6

Start Page


  • 10891

End Page


  • 10897

Volume


  • 28

Issue


  • 29

Place Of Publication


  • United States