DSpace
 

DSpace at IIT Bombay >
IITB Publications >
Article >

Please use this identifier to cite or link to this item: http://dspace.library.iitb.ac.in/jspui/handle/10054/793

Title: Electrochemistry of polyaniline Langmuir–Blodgett films
Authors: DABKE, RB
DHANABALAN, A
MAJOR, SS
TALWAR, SS
LAL, RAKESH
CONTRACTOR, AQ
Keywords: electrochemistry
plastic films
molecular structure
ionic conduction in solids
Issue Date: 1998
Publisher: Elsevier
Citation: Thin Solid Films 335(1-2), 203-208
Abstract: Langmuir–Blodgett (LB) manipulation of polyaniline has been variously employed to obtain organized assemblies for use in molecule-based electronic devices. However, the electrochemical characteristics of polyaniline LB films which have a direct implication on the proposed device applications have not been given much attention. We report here, electrochemical characterization of multilayer LB films of polyaniline prepared by employing N-methylpyrrolidone as the processing solvent. The films have been transferred onto a variety of substrates such as quartz, platinum, platinum sputtered on quartz, and conducting tin oxide on glass. The electrochemistry of polyaniline LB films has been studied using cyclic voltammetry coupled with a quartz crystal microbalance (QCM). Cyclic voltammograms were obtained for films transferred at different surface pressures, for films containing different number of layers. The electrochemical characteristics of LB multilayers were compared with those of electrochemically deposited films and were used to infer the packing behaviour of polymer chains in the LB film structure. It was found that multilayer LB films are electroactive but the kinetics of counter ion transport in these films is slower than that observed in electrochemically deposited films. The multilayer LB films also show poor electrochromic switching behaviour.
URI: http://dx.doi.org/10.1016/S0040-6090(98)00877-3
http://hdl.handle.net/10054/793
http://dspace.library.iitb.ac.in/xmlui/handle/10054/793
ISSN: 0040-6090
Appears in Collections:Article

Files in This Item:

File Description SizeFormat
5548-2.pdf245.75 kBAdobe PDFView/Open
View Statistics

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

 

Valid XHTML 1.0! DSpace Software Copyright © 2002-2010  Duraspace - Feedback