A study of acid/base treatments of polypyrrole films using 13C n.m.r. spectroscopy Forsyth, M. and Truong, V. -T. 1995, A study of acid/base treatments of polypyrrole films using 13C n.m.r. spectroscopy, Polymer, vol. 36, no. 4, pp. 725-730, doi: 10.1016/0032-3861(95)93101-Q. Attached Files Name Description MIMEType Size Downloads Title A study of acid/base treatments of polypyrrole films using 13C n.m.r. spectroscopy Formatted title A study of acid/base treatments of polypyrrole films using 13C n.m.r. spectroscopy Author(s) Forsyth, M. orcid.org/0000-0002-4273-8105 Truong, V. -T. Journal name Polymer Volume number 36 Issue number 4 Start page 725 End page 730 Publisher Elsevier Ltd. Place of publication Oxford, England Publication date 1995 ISSN 0032-3861 1873-2291 Keyword(s) polypyrrole films n.m.r. spectroscopy acid/base treatment Summary Electrodeposited polypyrrole films prepared with paratoluenesulfonate (pTS), dodecylsulfate (DDS) and perchlorate anions were treated with acidic and basic solutions, and their structure was investigated by 13C solid state n.m.r. spectroscopy. This technique has confirmed that pTS is completely removed from the film in both acidic and basic solutions whilst DDS is only partially removed and tends to decompose upon treatment with H2SO4. The appearance of shoulders at 143 ppm upon treatment with 0.5 M base indicates formation of a quinoid pyrrole structure. Substitution on the β-carbon by OH cannot be confirmed from the present spectra. Stronger base causes a more dramatic change in the polypyrrole backbone with an obvious increase in the electron density on the β-carbons, consistent with the reduction of the carbon backbone. There is no indication of quinoid units in this case. Acid treatments result in considerable broadening of the main 127 ppm polypyrrole peak. Language eng DOI 10.1016/0032-3861(95)93101-Q Field of Research 039999 Chemical Sciences not elsewhere classified Socio Economic Objective 970103 Expanding Knowledge in the Chemical Sciences HERDC Research category C1.1 Refereed article in a scholarly journal Copyright notice ©1995, Elsevier Science Ltd. Persistent URL http://hdl.handle.net/10536/DRO/DU:30030148 Document type: Journal Article Collection: Institute for Technology Research and Innovation 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 Fri, 10 Sep 2010, 15:09:16 EST Fri, 24 Sep 2010, 10:35:30 EST Fri, 24 Sep 2010, 14:16:16 EST Fri, 24 Sep 2010, 14:17:51 EST Mon, 16 Jun 2014, 16:24:19 EST Filtered Full Citation counts:   Cited 21 times in TR Web of Science Cited 19 times in Scopus Search Google Scholar Access Statistics: 469 Abstract Views, 0 File Downloads  -  Detailed Statistics Created: Fri, 10 Sep 2010, 15:09:16 EST

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