Electrochemistry of polyaniline Langmuir–Blodgett films

DSpace/Manakin Repository

Electrochemistry of polyaniline Langmuir–Blodgett films

Show full item record

Title: Electrochemistry of polyaniline Langmuir–Blodgett films
Author: DABKE, RB; DHANABALAN, A; MAJOR, SS; TALWAR, SS; LAL, RAKESH; CONTRACTOR, AQ
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
Date: 1998


Files in this item

Files Size Format View
5548-2.pdf 245.7Kb PDF View/Open

This item appears in the following Collection(s)

Show full item record

Search DSpace


Advanced Search

Browse

My Account