Please use this identifier to cite or link to this item:
Title: Concurrent N-alkylation and doping of polyaniline by alkyl halides
Authors: Zhao, B. 
Neoh, K.G. 
Kang, E.T. 
Tan, K.L. 
Issue Date: Jun-2000
Citation: Zhao, B., Neoh, K.G., Kang, E.T., Tan, K.L. (2000-06). Concurrent N-alkylation and doping of polyaniline by alkyl halides. Chemistry of Materials 12 (6) : 1800-1806. ScholarBank@NUS Repository.
Abstract: The N-alkylation of polyaniline (PANi) was investigated by treating the fully reduced state (leucoemeraldine or LM) and the 50% oxidized state (emeraldine or EM) directly with various alkyl halides. The degree of alkylation of LM is low (< 10%), while that of EM base is much higher (can be > 30%), suggesting that the imine nitrogen is more reactive as a nucleophile than the amine nitrogen in the alkylation reaction. Evidence of concurrent doping of PANi during the N-alkylation process was obtained using UV-visible absorption spectroscopy, FTIR spectroscopy, XPS, and conductivity measurement. The electrical conductivity of the N-alkylated PANi is strongly dependent on the degree of alkylation. The effects of the various alkyl halides, solvents, and reaction temperatures on the degree of alkylation and reaction rate were studied. The mechanism of the N-alkylation reaction and the structure of the resulting product were postulated.
Source Title: Chemistry of Materials
ISSN: 08974756
DOI: 10.1021/cm0000548
Appears in Collections:Staff Publications

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


checked on Jun 2, 2023


checked on Oct 1, 2021

Page view(s)

checked on May 25, 2023

Google ScholarTM



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