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Dissolution and Doping of Polyaniline Emeraldine Base in Imidazolium Ionic Liquids Investigated by Spectroscopic Techniques
Author(s) -
Rodrigues Fabio,
do Nascimento Gustavo M.,
Santos Paulo S.
Publication year - 2007
Publication title -
macromolecular rapid communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.348
H-Index - 154
eISSN - 1521-3927
pISSN - 1022-1336
DOI - 10.1002/marc.200600635
Subject(s) - polyaniline , ionic liquid , dissolution , moiety , materials science , raman spectroscopy , conductive polymer , doping , xanes , polymer , base (topology) , polyaniline nanofibers , polymer chemistry , ionic bonding , chemical engineering , organic chemistry , chemistry , ion , spectroscopy , polymerization , composite material , mathematical analysis , physics , optoelectronics , mathematics , quantum mechanics , optics , engineering , catalysis
Polyaniline is a model molecular system in the study of conductive polymers. Ionic liquids, on the other hand, are becoming more and more a very convenient alternative for conventional organic solvents. The dissolution of polyaniline‐emeraldine base (PANI‐EB) in imidazolium ILs leads to its doping, as indicated by optical and resonance Raman spectroscopies. In this study, it is proposed that the interaction of PANI‐EB and imidazolium ILs involves the specific interaction of the quinoid moiety of the former with the imidazolium ring of the latter, an interpretation that is also based on N K ‐edge XANES measurements of neat PANI‐EB, neat ILs, and of their solutions.