dc.contributor.author |
Nand, Ashveen V |
en |
dc.contributor.author |
Ray, Sudip |
en |
dc.contributor.author |
Easteal, Allan J |
en |
dc.contributor.author |
Waterhouse, Geoffrey |
en |
dc.contributor.author |
Gizdavic Nikolaidis, Marija |
en |
dc.contributor.author |
Cooney, Ralph |
en |
dc.contributor.author |
Travas-Sejdic, Jadranka |
en |
dc.contributor.author |
Kilmartin, Paul |
en |
dc.date.accessioned |
2012-03-11T22:21:56Z |
en |
dc.date.issued |
2011-07-01 |
en |
dc.identifier.citation |
Synthetic Metals 161(13-14):1232-1237 01 Jul 2011 |
en |
dc.identifier.issn |
0379-6779 |
en |
dc.identifier.uri |
http://hdl.handle.net/2292/13725 |
en |
dc.description.abstract |
Polyaniline was chemically synthesized by oxidizing aniline with ammonium persulfate with and without hydrochloric acid (G-PANI and NR-PANI. respectively). NR-PANI and G-PANI were dedoped with ammonium hydroxide to yield NR-PANIdd and G-PANIdd. SEM images revealed a typical granular morphology for G-PANI and G-PANIdd, while NR-PANI, formed using a 'falling pH method', and NR-PANIdd, consisted of micro/nanorods and flakes. The samples were characterized using FTIR and the level of oxidation was determined by X-ray photoelectron spectroscopy (XPS). The surface area of the samples was measured by the BET method. The free radical scavenging activity, using the DPPH(center dot) assay, showed the following ranking: NR-PANI > G-PANI approximate to NR-PANIdd > G-PANIdd. The radical scavenging activity of the polyanilines did not correlate with conductivity or surface area measurements, but was critically dependent upon the level of oxidation, and higher activity was obtained with the more reduced polyaniline samples. (C) 2011 Elsevier B.V. All rights reserved. |
en |
dc.language |
English |
en |
dc.publisher |
Elsevier B.V. |
en |
dc.relation.ispartofseries |
Synthetic Metals |
en |
dc.rights |
Items in ResearchSpace are protected by copyright, with all rights reserved, unless otherwise indicated. Previously published items are made available in accordance with the copyright policy of the publisher.
Details obtained from http://www.sherpa.ac.uk/romeo/issn/0379-6779/ |
en |
dc.rights.uri |
https://researchspace.auckland.ac.nz/docs/uoa-docs/rights.htm |
en |
dc.subject |
Science & Technology |
en |
dc.subject |
Technology |
en |
dc.subject |
Physical Sciences |
en |
dc.subject |
Materials Science, Multidisciplinary |
en |
dc.subject |
Physics, Condensed Matter |
en |
dc.subject |
Polymer Science |
en |
dc.subject |
Materials Science |
en |
dc.subject |
Physics |
en |
dc.subject |
Polyaniline |
en |
dc.subject |
Nanorods |
en |
dc.subject |
DPPH |
en |
dc.subject |
Surface area |
en |
dc.subject |
Radical scavenging |
en |
dc.subject |
RAY PHOTOELECTRON-SPECTROSCOPY |
en |
dc.subject |
CONDUCTING POLYMERS |
en |
dc.subject |
ANTIOXIDANT ACTIVITY |
en |
dc.subject |
NANOTUBES |
en |
dc.subject |
SURFACE |
en |
dc.subject |
FILMS |
en |
dc.subject |
AREA |
en |
dc.subject |
XPS |
en |
dc.title |
Factors affecting the radical scavenging activity of polyaniline |
en |
dc.type |
Journal Article |
en |
dc.identifier.doi |
10.1016/j.synthmet.2011.04.010 |
en |
pubs.issue |
13-14 |
en |
pubs.begin-page |
1232 |
en |
pubs.volume |
161 |
en |
dc.rights.holder |
Copyright: Elsevier B.V. |
en |
pubs.end-page |
1237 |
en |
dc.rights.accessrights |
http://purl.org/eprint/accessRights/RestrictedAccess |
en |
pubs.subtype |
Article |
en |
pubs.elements-id |
215227 |
en |
pubs.org-id |
Medical and Health Sciences |
en |
pubs.org-id |
Medical Sciences |
en |
pubs.org-id |
Molecular Medicine |
en |
pubs.org-id |
Science |
en |
pubs.org-id |
Chemistry |
en |
pubs.record-created-at-source-date |
2012-03-12 |
en |