Please use this identifier to cite or link to this item: https://doi.org/10.1021/jp002669y
Title: Conversion of polyaniline from insulating to conducting state in aqueous viologen solutions
Authors: Ng, S.W.
Neoh, K.G. 
Sampanthar, J.T. 
Kang, E.T. 
Tan, K.L. 
Issue Date: 21-Jun-2001
Source: Ng, S.W., Neoh, K.G., Sampanthar, J.T., Kang, E.T., Tan, K.L. (2001-06-21). Conversion of polyaniline from insulating to conducting state in aqueous viologen solutions. Journal of Physical Chemistry B 105 (24) : 5618-5625. ScholarBank@NUS Repository. https://doi.org/10.1021/jp002669y
Abstract: The interactions of polyaniline coatings on low-density polyethylene films with aqueous viologen solutions were investigated. The coatings were characterized by X-ray photoelectron spectroscopy, electron spin spectroscopy, UV-visible absorption spectroscopy and sheet resistance measurements. The results showed that the polyaniline coating can be converted from the insulating base form to the electrically conducting salt form after reaction with the viologen solutions. The reaction rate is dependent on the intrinsic oxidation state of the polyaniline, the type and concentration of the viologen, and the reaction temperature. It is proposed that the conversion of the polyaniline to a conductive state occurs via an oxidative doping mechanism whereby electrons are transferred to the viologen dications. In the proposed mechanism, dissolved oxygen is deemed to play an important role, and this was verified experimentally.
Source Title: Journal of Physical Chemistry B
URI: http://scholarbank.nus.edu.sg/handle/10635/52651
ISSN: 10895647
DOI: 10.1021/jp002669y
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

SCOPUSTM   
Citations

36
checked on Jan 2, 2018

WEB OF SCIENCETM
Citations

34
checked on Jan 2, 2018

Page view(s)

36
checked on Jan 14, 2018

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.