The role of unbound oligomers in the nucleation and growth of electrodeposited polypyrrole and method for preparing high strength, high conductivity films Zheng, Wen, Razal, Joselito M, Spinks, Geoffrey M, Truong, Van-Tan, Whitten, Philip G and Wallace, Gordon 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, vol. 28, no. 29, pp. 10891-10897, doi: 10.1021/la301701g. Attached Files Name Description MIMEType Size Downloads Title The role of unbound oligomers in the nucleation and growth of electrodeposited polypyrrole and method for preparing high strength, high conductivity films Author(s) Zheng, Wen Razal, Joselito M orcid.org/0000-0002-9758-3702 Spinks, Geoffrey M Truong, Van-Tan Whitten, Philip G Wallace, Gordon G Journal name Langmuir Volume number 28 Issue number 29 Start page 10891 End page 10897 Total pages 7 Publisher American Chemical Society Place of publication Washington, DC Publication date 2012 ISSN 0743-7463 Keyword(s) Unbound Oligomers Electrodeposited polypyrrole High conductivity films Summary 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. Language eng DOI 10.1021/la301701g Field of Research 109999 Technology not elsewhere classified Socio Economic Objective 970110 Expanding Knowledge in Technology HERDC Research category C1.1 Refereed article in a scholarly journal Persistent URL http://hdl.handle.net/10536/DRO/DU:30061330 Document type: Journal Article Collection: Faculty of Science, Engineering and Built Environment Related Links Link Description Connect to published version (restricted access) Go to link with your DU access privileges     Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved. Versions Version Filter Type Thu, 06 Mar 2014, 11:31:20 EST Thu, 13 Mar 2014, 15:35:58 EST Fri, 09 May 2014, 15:14:18 EST Thu, 11 Dec 2014, 19:54:07 EST Filtered Full Citation counts:   Cited 23 times in TR Web of Science Cited 23 times in Scopus Search Google Scholar Access Statistics: 480 Abstract Views, 3 File Downloads  -  Detailed Statistics Created: Thu, 06 Mar 2014, 11:31:19 EST

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