A1 Refereed original research article in a scientific journal

In situ conductance and in situ ATR-FTIR study of poly(N-methylaniline) in aqueous solution




AuthorsWei D, Espindola P, Lindfors T, Kvarnstrom C, Heinze J, Ivaska A

PublisherELSEVIER SCIENCE SA

Publication year2007

Journal:Journal of Electroanalytical Chemistry and Interfacial Electrochemistry

Journal name in sourceJOURNAL OF ELECTROANALYTICAL CHEMISTRY

Journal acronymJ ELECTROANAL CHEM

Volume602

Issue2

First page 203

Last page209

Number of pages7

ISSN0022-0728

DOIhttps://doi.org/10.1016/j.jelechem.2006.12.017


Abstract
In situ attenuated total reflection Fourier transform infrared spectroscopy, ATR-FTIR and in situ conductance measurements offer information on structure, electronic, and conductance changes during doping and electropolymerization of conducting polymers. In this paper, we report the in situ recording of the conductance changes during cyclic voltammetry measurements (electropolymerization and the subsequent doping) of N-methylaniline (NMA). The vibrational spectra of poly(N-methylaniline) (PNMA) show specific and characteristic features not only related to its chemical structure, but also to the existence of free charge carriers delocalized along the pi-electron network. Results from both in situ conductance and in situ ATR-FTIR have brought us a better understanding of electronic properties and the nature of charge carriers of PNMA film synthesized in acidic aqueous solutions. (c) 2007 Elsevier B.V. All rights reserved.



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